56 constexpr
double maximum_cross_section_photon = 200.0;
57 return (sigma_mb > maximum_cross_section_photon)
58 ? maximum_cross_section_photon
70 const double s,
const double m_rho) {
78 const double &tmax = t_mandelstam[0];
79 const double &tmin = t_mandelstam[1];
81 const double spin_deg_factor = 3.0;
85 (pow(
Const, 2) * pow(ghat, 4) *
86 ((pow(eta1 - eta2, 2) *
91 (pow(
pion_mass, 2) - pow(m_rho, 2)) * (pow(m_rho, 2) + s) +
92 pow(a1_mass, 6) * (-4 * pow(
pion_mass, 2) + 2 * s) +
95 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) -
96 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) +
100 2 * pow(a1_mass, 6) *
101 (-2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s) +
102 2 * pow(a1_mass, 2) * pow(
pion_mass, 2) *
104 pow(
pion_mass, 2) * (2 * pow(m_rho, 2) - s) +
108 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) -
109 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
113 2 * pow(a1_mass, 6) *
114 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) -
115 2 * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
116 pow(
pion_mass, 4) * (3 * pow(m_rho, 4) + 2 * pow(m_rho, 2) * s) +
119 pow(
pion_mass, 2) * (8 * pow(m_rho, 2) - 4 * s) -
120 4 * pow(m_rho, 2) * s + 2 * pow(s, 2)) -
121 2 * pow(a1_mass, 2) *
122 (pow(m_rho, 2) * s * (-pow(m_rho, 2) + s) +
123 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s) +
125 (2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s))))) /
126 ((pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
127 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
128 (pow(a1_mass, 2) - tmax)) +
129 (8 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
130 (4 * pow(
pion_mass, 2) - pow(m_rho, 2))) /
131 ((pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
132 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
134 (8 * pow(-2 + delta, 2) * pow(
pion_mass, 2) * tmax) /
135 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - s, 2)) -
136 (8 * pow(-2 + delta, 2) * pow(
pion_mass, 2) * tmax) /
137 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
138 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
140 (-8 * C4 * pow(m_rho, 4) +
141 pow(
pion_mass, 2) * (2 + delta - 8 * C4 * pow(m_rho, 2)) -
142 (2 + 3 * delta) * s +
143 pow(m_rho, 2) * (-2 + 3 * delta + 16 * C4 * s)) *
145 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
146 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
147 (4 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
148 (eta2 * (pow(
pion_mass, 2) + pow(m_rho, 2) - 2 * s) *
151 (-2 * pow(
pion_mass, 4) + pow(m_rho, 4) - 3 * pow(m_rho, 2) * s +
152 2 * pow(s, 2) + pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) *
154 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
155 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
156 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
157 (pow(eta1 - eta2, 2) *
159 (3 * pow(a1_mass, 4) + 4 * pow(
pion_mass, 4) + pow(m_rho, 4) +
160 pow(
pion_mass, 2) * (8 * pow(m_rho, 2) - 4 * s) -
161 4 * pow(a1_mass, 2) *
162 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) -
163 4 * pow(m_rho, 2) * s + 2 * pow(s, 2)) +
165 (3 * pow(a1_mass, 4) + 4 * pow(
pion_mass, 4) + pow(m_rho, 4) -
166 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) -
167 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s) +
168 4 * pow(a1_mass, 2) *
169 (-2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s)) -
171 (3 * pow(a1_mass, 4) + 4 * pow(
pion_mass, 4) - pow(m_rho, 4) +
172 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) -
173 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) +
174 pow(a1_mass, 2) * (-8 * pow(
pion_mass, 2) + 4 * s))) *
176 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
177 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) +
179 (pow(delta, 2) * (8 * pow(
pion_mass, 4) + 3 * pow(m_rho, 4) +
180 4 * pow(
pion_mass, 2) * (3 * pow(m_rho, 2) - 2 * s) -
181 6 * pow(m_rho, 2) * s + 2 * pow(s, 2)) +
183 (3 + 12 * C4 * (2 * pow(
pion_mass, 2) - s) +
184 8 * pow(C4, 2) * pow(-2 * pow(
pion_mass, 2) + s, 2)) -
185 4 * delta * pow(m_rho, 2) *
188 (3 + 6 * C4 * pow(m_rho, 2) - 8 * C4 * s) +
189 pow(m_rho, 2) * (3 - 6 * C4 * s) + s * (-3 + 4 * C4 * s))) *
191 (pow(m_rho, 4) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
192 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
194 (pow(
pion_mass, 4) * (-2 + 3 * delta - 8 * C4 * pow(m_rho, 2)) +
195 (pow(m_rho, 2) - s) * ((-2 + 3 * delta) * s +
196 pow(m_rho, 2) * (-2 + delta - 8 * C4 * s)) +
198 (2 * C4 * pow(m_rho, 4) + delta * s -
199 pow(m_rho, 2) * (-1 + delta + 4 * C4 * s))) *
201 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
202 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
203 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
204 (4 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
207 (pow(m_rho, 2) - s) * s) +
208 eta1 * (-4 * pow(
pion_mass, 6) + pow(pow(m_rho, 2) - s, 2) * s +
209 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s) -
211 (pow(m_rho, 4) - pow(m_rho, 2) * s + 2 * pow(s, 2)))) *
213 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
215 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
216 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
217 (pow(eta1 - eta2, 2) *
219 (pow(
pion_mass, 8) - pow(m_rho, 4) * pow(s, 2) + pow(s, 4) -
221 (pow(m_rho, 4) + 2 * pow(m_rho, 2) * s - 4 * pow(s, 2)) +
223 (pow(m_rho, 4) + pow(m_rho, 2) * s - 2 * pow(s, 2))) +
226 pow(s, 2) * pow(pow(m_rho, 2) + s, 2) +
227 pow(
pion_mass, 4) * pow(pow(m_rho, 2) + 2 * s, 2) -
229 (pow(m_rho, 4) + 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) +
232 4 * pow(
pion_mass, 2) * pow(pow(m_rho, 2) - s, 2) * s +
233 pow(pow(m_rho, 2) - s, 2) * pow(s, 2) +
234 pow(
pion_mass, 4) * (3 * pow(m_rho, 4) - 6 * pow(m_rho, 2) * s +
237 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
238 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
239 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
240 (2 * pow(eta1 - eta2, 2) * (pow(a1_mass, 2) - s) *
242 (pow(a1_mass, 4) * s +
243 pow(
pion_mass, 4) * (-3 * pow(m_rho, 2) + 2 * s) +
244 s * (2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s + pow(s, 2)) -
246 (pow(m_rho, 4) - 4 * pow(m_rho, 2) * s + 2 * pow(s, 2)) +
248 (2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) +
249 3 * s * (-pow(m_rho, 2) + s))) -
251 (pow(a1_mass, 4) * s +
253 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s) +
254 s * (-2 * pow(m_rho, 2) + s)) +
255 pow(a1_mass, 2) * (pow(
pion_mass, 2) * (pow(m_rho, 2) - 4 * s) +
256 s * (-2 * pow(m_rho, 2) + 3 * s))) +
257 pow(eta2, 2) * (-4 * pow(
pion_mass, 2) * s *
258 (pow(a1_mass, 2) + pow(m_rho, 2) + s) +
259 pow(
pion_mass, 4) * (pow(m_rho, 2) + 2 * s) +
260 s * (pow(a1_mass, 4) + s * (pow(m_rho, 2) + s) +
261 pow(a1_mass, 2) * (pow(m_rho, 2) + 3 * s)))) *
263 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
264 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
265 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
266 (4 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
268 (6 * C4 * pow(m_rho, 4) + 2 * delta * s +
269 pow(m_rho, 2) * (1 - 2 * delta - 8 * C4 * s)) +
271 (4 * delta * pow(s, 2) +
272 pow(m_rho, 2) * s * (6 - 7 * delta - 16 * C4 * s) +
273 2 * pow(m_rho, 4) * (-2 + delta + 8 * C4 * s)) -
274 (pow(m_rho, 2) - s) * s *
276 pow(m_rho, 2) * (-6 + 3 * delta + 8 * C4 * s))) +
278 (2 * pow(
pion_mass, 4) * (pow(m_rho, 2) + 4 * s) +
280 pow(m_rho, 2) * s - 8 * pow(s, 2)) +
281 s * (-2 * pow(m_rho, 4) - pow(m_rho, 2) * s +
284 (4 * C4 * pow(
pion_mass, 4) * (pow(m_rho, 2) + 4 * s) +
285 pow(
pion_mass, 2) * (s * (5 - 16 * C4 * s) +
286 pow(m_rho, 2) * (2 - 8 * C4 * s)) +
287 s * (s * (-3 + 4 * C4 * s) +
288 pow(m_rho, 2) * (-2 + 4 * C4 * s))))) *
291 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
292 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
293 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
297 pow(
pion_mass, 4) * (7 * pow(m_rho, 2) - 8 * s) +
298 pow(a1_mass, 4) * (pow(
pion_mass, 2) - s) -
300 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - 2 * s) *
302 pow(
pion_mass, 2) * s * (-8 * pow(m_rho, 2) + 5 * s) +
303 s * (pow(m_rho, 4) + pow(m_rho, 2) * s - pow(s, 2))) +
306 pow(
pion_mass, 4) * (pow(m_rho, 2) - 8 * s) +
307 pow(a1_mass, 4) * (-pow(
pion_mass, 2) + s) +
308 pow(
pion_mass, 2) * (2 * pow(m_rho, 4) - 5 * pow(s, 2)) +
309 s * (-2 * pow(m_rho, 4) + pow(m_rho, 2) * s + pow(s, 2)) +
312 s * (pow(m_rho, 2) + 2 * s)))) -
316 pow(
pion_mass, 4) * (3 + 8 * C4 * (pow(m_rho, 2) - 2 * s)) +
317 2 * C4 * pow(a1_mass, 4) * (pow(
pion_mass, 2) - s) +
319 (-1 - 6 * C4 * pow(m_rho, 2) + 5 * C4 * s) -
323 (1 + 2 * C4 * (pow(m_rho, 2) - 6 * s)) +
324 2 * C4 * s * (-pow(m_rho, 2) + 2 * s)) +
325 s * (-(s * (1 + 2 * C4 * s)) +
326 pow(m_rho, 2) * (1 + 4 * C4 * s))) +
327 eta2 * (2 * C4 * pow(a1_mass, 4) * (-pow(
pion_mass, 2) + s) -
329 (8 * C4 * pow(
pion_mass, 4) - 2 * pow(m_rho, 2) + s +
332 (3 - 4 * C4 * (pow(m_rho, 2) + 2 * s))) +
335 2 * C4 * s * (pow(m_rho, 2) + 2 * s) +
337 (1 - 2 * C4 * (pow(m_rho, 2) + 6 * s)))))) *
339 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
340 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
341 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
342 (8 * (-2 + delta) * (delta - 4 * C4 * pow(m_rho, 2)) * pow(tmax, 2)) /
343 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
344 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
345 (16 * (-2 + delta) * (delta - 4 * C4 * pow(m_rho, 2)) * s *
347 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
348 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
349 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
350 (pow(eta1 - eta2, 2) *
351 (pow(eta1, 2) * (pow(m_rho, 2) - s) + 2 * eta1 * eta2 * s -
354 (pow(m_rho, 2) - s) * s) *
356 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
357 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
358 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
359 (2 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
360 (-(eta1 * (pow(
pion_mass, 2) + 2 * pow(m_rho, 2) - 3 * s)) -
363 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
364 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
365 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
366 (2 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
368 (-2 * eta2 * s + eta1 * (pow(
pion_mass, 2) - pow(m_rho, 2) + s)) *
370 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
372 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
373 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
374 (pow(eta1 - eta2, 3) *
375 (eta1 * (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s) -
377 (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s)) *
379 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
380 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) -
381 (8 * (delta - 4 * C4 * pow(m_rho, 2)) *
382 (delta * (4 * pow(
pion_mass, 2) + 3 * pow(m_rho, 2) - 2 * s) -
383 2 * pow(m_rho, 2) * (3 + 8 * C4 * pow(
pion_mass, 2) - 4 * C4 * s)) *
385 (pow(m_rho, 4) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
386 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
387 (pow(eta1 - eta2, 2) * (pow(a1_mass, 2) - s) *
389 (pow(a1_mass, 2) - 4 * pow(
pion_mass, 2) + pow(m_rho, 2) +
391 pow(eta1, 2) * (2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) +
392 s * (pow(a1_mass, 2) - 3 * pow(m_rho, 2) + 3 * s)) -
394 (pow(
pion_mass, 2) * (pow(m_rho, 2) - 4 * s) +
395 s * (pow(a1_mass, 2) - 2 * pow(m_rho, 2) + 3 * s))) *
397 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
398 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
399 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
400 (2 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
401 (eta1 * (4 * delta * pow(s, 2) -
402 2 * pow(m_rho, 2) * s * (-2 + 3 * delta + 8 * C4 * s) +
403 pow(m_rho, 4) * (-2 + delta + 16 * C4 * s) -
405 (8 * C4 * pow(m_rho, 4) + 4 * delta * s +
406 pow(m_rho, 2) * (2 - 3 * delta - 16 * C4 * s))) +
409 pow(m_rho, 2) * (-2 + delta - 32 * C4 * s)) +
410 s * (-4 * delta * s +
411 pow(m_rho, 2) * (-2 + delta + 16 * C4 * s)))) *
414 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
415 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
416 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
418 (delta * (eta1 * (pow(a1_mass, 2) * (pow(
pion_mass, 2) - s) -
419 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - 2 * s) *
422 pow(a1_mass, 2) * (-pow(
pion_mass, 2) + s) +
423 s * (pow(m_rho, 2) + 2 * s))) +
426 2 * C4 * s * (pow(a1_mass, 2) - pow(m_rho, 2) + 2 * s) +
429 pow(m_rho, 2) + 6 * s))) -
431 2 * C4 * s * (pow(a1_mass, 2) + pow(m_rho, 2) + 2 * s) -
435 (pow(a1_mass, 2) + pow(m_rho, 2) + 6 * s))))) *
437 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
438 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
439 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
440 (pow(eta1 - eta2, 4) * pow(tmax, 3)) /
441 (3. * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
442 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
443 (8 * pow(eta1 - eta2, 2) * (delta - 4 * C4 * pow(m_rho, 2)) *
445 (3. * pow(m_rho, 2) *
446 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
447 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
448 (16 * pow(delta - 4 * C4 * pow(m_rho, 2), 2) * pow(tmax, 3)) /
449 (3. * pow(m_rho, 4) *
450 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
451 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
452 (4 * (-2 + delta) * eta1 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
455 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
456 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
457 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
458 (2 * pow(eta1 - eta2, 4) * (pow(a1_mass, 2) - s) * s * pow(tmax, 3)) /
460 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
461 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
462 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
463 (2 * pow(eta1 - eta2, 2) * s *
464 (-2 * eta1 * eta2 * s + pow(eta2, 2) * s +
465 pow(eta1, 2) * (-pow(m_rho, 2) + s)) *
468 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
469 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
470 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
471 (4 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
472 (2 * eta2 * (delta - 4 * C4 * pow(m_rho, 2)) * s +
473 eta1 * (-2 * delta * s + pow(m_rho, 2) * (-2 + delta + 8 * C4 * s))) *
475 (3. * pow(m_rho, 2) *
476 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
477 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
478 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
479 (pow(eta1 - eta2, 2) *
483 2 * pow(a1_mass, 2) * pow(
pion_mass, 2) *
484 (pow(
pion_mass, 2) - pow(m_rho, 2)) * (pow(m_rho, 2) + s) +
485 pow(a1_mass, 6) * (-4 * pow(
pion_mass, 2) + 2 * s) +
488 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) -
489 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) +
493 2 * pow(a1_mass, 6) *
494 (-2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s) +
495 2 * pow(a1_mass, 2) * pow(
pion_mass, 2) *
497 pow(
pion_mass, 2) * (2 * pow(m_rho, 2) - s) +
501 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) -
502 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
506 2 * pow(a1_mass, 6) *
507 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) -
508 2 * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
509 pow(
pion_mass, 4) * (3 * pow(m_rho, 4) + 2 * pow(m_rho, 2) * s) +
512 pow(
pion_mass, 2) * (8 * pow(m_rho, 2) - 4 * s) -
513 4 * pow(m_rho, 2) * s + 2 * pow(s, 2)) -
514 2 * pow(a1_mass, 2) *
515 (pow(m_rho, 2) * s * (-pow(m_rho, 2) + s) +
516 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s) +
518 (2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s))))) /
519 ((pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
520 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
521 (pow(a1_mass, 2) - tmin)) -
522 (8 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
523 (4 * pow(
pion_mass, 2) - pow(m_rho, 2))) /
524 ((pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
525 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
527 (8 * pow(-2 + delta, 2) * pow(
pion_mass, 2) * tmin) /
528 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - s, 2)) +
529 (8 * pow(-2 + delta, 2) * pow(
pion_mass, 2) * tmin) /
530 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
531 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
533 (-8 * C4 * pow(m_rho, 4) +
534 pow(
pion_mass, 2) * (2 + delta - 8 * C4 * pow(m_rho, 2)) -
535 (2 + 3 * delta) * s +
536 pow(m_rho, 2) * (-2 + 3 * delta + 16 * C4 * s)) *
538 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
539 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
540 (4 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
541 (eta2 * (pow(
pion_mass, 2) + pow(m_rho, 2) - 2 * s) *
544 (-2 * pow(
pion_mass, 4) + pow(m_rho, 4) - 3 * pow(m_rho, 2) * s +
545 2 * pow(s, 2) + pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) *
547 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
548 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
549 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
550 (pow(eta1 - eta2, 2) *
552 (3 * pow(a1_mass, 4) + 4 * pow(
pion_mass, 4) + pow(m_rho, 4) +
553 pow(
pion_mass, 2) * (8 * pow(m_rho, 2) - 4 * s) -
554 4 * pow(a1_mass, 2) *
555 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) -
556 4 * pow(m_rho, 2) * s + 2 * pow(s, 2)) +
558 (3 * pow(a1_mass, 4) + 4 * pow(
pion_mass, 4) + pow(m_rho, 4) -
559 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) -
560 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s) +
561 4 * pow(a1_mass, 2) *
562 (-2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s)) -
564 (3 * pow(a1_mass, 4) + 4 * pow(
pion_mass, 4) - pow(m_rho, 4) +
565 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) -
566 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) +
567 pow(a1_mass, 2) * (-8 * pow(
pion_mass, 2) + 4 * s))) *
569 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
570 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) -
572 (pow(delta, 2) * (8 * pow(
pion_mass, 4) + 3 * pow(m_rho, 4) +
573 4 * pow(
pion_mass, 2) * (3 * pow(m_rho, 2) - 2 * s) -
574 6 * pow(m_rho, 2) * s + 2 * pow(s, 2)) +
576 (3 + 12 * C4 * (2 * pow(
pion_mass, 2) - s) +
577 8 * pow(C4, 2) * pow(-2 * pow(
pion_mass, 2) + s, 2)) -
578 4 * delta * pow(m_rho, 2) *
581 (3 + 6 * C4 * pow(m_rho, 2) - 8 * C4 * s) +
582 pow(m_rho, 2) * (3 - 6 * C4 * s) + s * (-3 + 4 * C4 * s))) *
584 (pow(m_rho, 4) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
585 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
587 (pow(
pion_mass, 4) * (-2 + 3 * delta - 8 * C4 * pow(m_rho, 2)) +
588 (pow(m_rho, 2) - s) * ((-2 + 3 * delta) * s +
589 pow(m_rho, 2) * (-2 + delta - 8 * C4 * s)) +
591 (2 * C4 * pow(m_rho, 4) + delta * s -
592 pow(m_rho, 2) * (-1 + delta + 4 * C4 * s))) *
594 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
595 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
596 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
597 (4 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
600 (pow(m_rho, 2) - s) * s) +
601 eta1 * (-4 * pow(
pion_mass, 6) + pow(pow(m_rho, 2) - s, 2) * s +
602 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s) -
604 (pow(m_rho, 4) - pow(m_rho, 2) * s + 2 * pow(s, 2)))) *
606 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
608 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
609 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
610 (pow(eta1 - eta2, 2) *
612 (pow(
pion_mass, 8) - pow(m_rho, 4) * pow(s, 2) + pow(s, 4) -
614 (pow(m_rho, 4) + 2 * pow(m_rho, 2) * s - 4 * pow(s, 2)) +
616 (pow(m_rho, 4) + pow(m_rho, 2) * s - 2 * pow(s, 2))) +
619 pow(s, 2) * pow(pow(m_rho, 2) + s, 2) +
620 pow(
pion_mass, 4) * pow(pow(m_rho, 2) + 2 * s, 2) -
622 (pow(m_rho, 4) + 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) +
625 4 * pow(
pion_mass, 2) * pow(pow(m_rho, 2) - s, 2) * s +
626 pow(pow(m_rho, 2) - s, 2) * pow(s, 2) +
627 pow(
pion_mass, 4) * (3 * pow(m_rho, 4) - 6 * pow(m_rho, 2) * s +
630 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
631 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
632 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
633 (2 * pow(eta1 - eta2, 2) * (pow(a1_mass, 2) - s) *
635 (pow(a1_mass, 4) * s +
636 pow(
pion_mass, 4) * (-3 * pow(m_rho, 2) + 2 * s) +
637 s * (2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s + pow(s, 2)) -
639 (pow(m_rho, 4) - 4 * pow(m_rho, 2) * s + 2 * pow(s, 2)) +
641 (2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) +
642 3 * s * (-pow(m_rho, 2) + s))) -
644 (pow(a1_mass, 4) * s +
646 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s) +
647 s * (-2 * pow(m_rho, 2) + s)) +
648 pow(a1_mass, 2) * (pow(
pion_mass, 2) * (pow(m_rho, 2) - 4 * s) +
649 s * (-2 * pow(m_rho, 2) + 3 * s))) +
650 pow(eta2, 2) * (-4 * pow(
pion_mass, 2) * s *
651 (pow(a1_mass, 2) + pow(m_rho, 2) + s) +
652 pow(
pion_mass, 4) * (pow(m_rho, 2) + 2 * s) +
653 s * (pow(a1_mass, 4) + s * (pow(m_rho, 2) + s) +
654 pow(a1_mass, 2) * (pow(m_rho, 2) + 3 * s)))) *
656 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
657 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
658 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
659 (4 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
661 (6 * C4 * pow(m_rho, 4) + 2 * delta * s +
662 pow(m_rho, 2) * (1 - 2 * delta - 8 * C4 * s)) -
664 (4 * delta * pow(s, 2) +
665 pow(m_rho, 2) * s * (6 - 7 * delta - 16 * C4 * s) +
666 2 * pow(m_rho, 4) * (-2 + delta + 8 * C4 * s)) +
667 (pow(m_rho, 2) - s) * s *
669 pow(m_rho, 2) * (-6 + 3 * delta + 8 * C4 * s))) +
671 (2 * pow(
pion_mass, 4) * (pow(m_rho, 2) + 4 * s) +
673 pow(m_rho, 2) * s - 8 * pow(s, 2)) +
674 s * (-2 * pow(m_rho, 4) - pow(m_rho, 2) * s +
677 (4 * C4 * pow(
pion_mass, 4) * (pow(m_rho, 2) + 4 * s) +
678 pow(
pion_mass, 2) * (s * (5 - 16 * C4 * s) +
679 pow(m_rho, 2) * (2 - 8 * C4 * s)) +
680 s * (s * (-3 + 4 * C4 * s) +
681 pow(m_rho, 2) * (-2 + 4 * C4 * s))))) *
684 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
685 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
686 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
690 pow(
pion_mass, 4) * (7 * pow(m_rho, 2) - 8 * s) +
691 pow(a1_mass, 4) * (pow(
pion_mass, 2) - s) -
693 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - 2 * s) *
695 pow(
pion_mass, 2) * s * (-8 * pow(m_rho, 2) + 5 * s) +
696 s * (pow(m_rho, 4) + pow(m_rho, 2) * s - pow(s, 2))) +
699 pow(
pion_mass, 4) * (pow(m_rho, 2) - 8 * s) +
700 pow(a1_mass, 4) * (-pow(
pion_mass, 2) + s) +
701 pow(
pion_mass, 2) * (2 * pow(m_rho, 4) - 5 * pow(s, 2)) +
702 s * (-2 * pow(m_rho, 4) + pow(m_rho, 2) * s + pow(s, 2)) +
705 s * (pow(m_rho, 2) + 2 * s)))) -
709 pow(
pion_mass, 4) * (3 + 8 * C4 * (pow(m_rho, 2) - 2 * s)) +
710 2 * C4 * pow(a1_mass, 4) * (pow(
pion_mass, 2) - s) +
712 (-1 - 6 * C4 * pow(m_rho, 2) + 5 * C4 * s) -
716 (1 + 2 * C4 * (pow(m_rho, 2) - 6 * s)) +
717 2 * C4 * s * (-pow(m_rho, 2) + 2 * s)) +
718 s * (-(s * (1 + 2 * C4 * s)) +
719 pow(m_rho, 2) * (1 + 4 * C4 * s))) +
720 eta2 * (2 * C4 * pow(a1_mass, 4) * (-pow(
pion_mass, 2) + s) -
722 (8 * C4 * pow(
pion_mass, 4) - 2 * pow(m_rho, 2) + s +
725 (3 - 4 * C4 * (pow(m_rho, 2) + 2 * s))) +
728 2 * C4 * s * (pow(m_rho, 2) + 2 * s) +
730 (1 - 2 * C4 * (pow(m_rho, 2) + 6 * s)))))) *
732 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
733 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
734 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
735 (8 * (-2 + delta) * (delta - 4 * C4 * pow(m_rho, 2)) * pow(tmin, 2)) /
736 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
737 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
738 (16 * (-2 + delta) * (delta - 4 * C4 * pow(m_rho, 2)) * s *
740 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
741 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
742 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
743 (pow(eta1 - eta2, 2) *
744 (pow(eta1, 2) * (pow(m_rho, 2) - s) + 2 * eta1 * eta2 * s -
747 (pow(m_rho, 2) - s) * s) *
749 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
750 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
751 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
752 (2 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
753 (-(eta1 * (pow(
pion_mass, 2) + 2 * pow(m_rho, 2) - 3 * s)) -
756 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
757 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
758 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
759 (2 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
761 (-2 * eta2 * s + eta1 * (pow(
pion_mass, 2) - pow(m_rho, 2) + s)) *
763 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
765 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
766 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
767 (pow(eta1 - eta2, 3) *
769 (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s)) +
771 (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s)) *
773 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
774 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) +
775 (8 * (delta - 4 * C4 * pow(m_rho, 2)) *
776 (delta * (4 * pow(
pion_mass, 2) + 3 * pow(m_rho, 2) - 2 * s) -
777 2 * pow(m_rho, 2) * (3 + 8 * C4 * pow(
pion_mass, 2) - 4 * C4 * s)) *
779 (pow(m_rho, 4) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
780 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
781 (pow(eta1 - eta2, 2) * (pow(a1_mass, 2) - s) *
783 (pow(a1_mass, 2) - 4 * pow(
pion_mass, 2) + pow(m_rho, 2) +
785 pow(eta1, 2) * (2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) +
786 s * (pow(a1_mass, 2) - 3 * pow(m_rho, 2) + 3 * s)) -
788 (pow(
pion_mass, 2) * (pow(m_rho, 2) - 4 * s) +
789 s * (pow(a1_mass, 2) - 2 * pow(m_rho, 2) + 3 * s))) *
791 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
792 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
793 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
794 (2 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
795 (eta1 * (4 * delta * pow(s, 2) -
796 2 * pow(m_rho, 2) * s * (-2 + 3 * delta + 8 * C4 * s) +
797 pow(m_rho, 4) * (-2 + delta + 16 * C4 * s) -
799 (8 * C4 * pow(m_rho, 4) + 4 * delta * s +
800 pow(m_rho, 2) * (2 - 3 * delta - 16 * C4 * s))) +
803 pow(m_rho, 2) * (-2 + delta - 32 * C4 * s)) +
804 s * (-4 * delta * s +
805 pow(m_rho, 2) * (-2 + delta + 16 * C4 * s)))) *
808 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
809 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
810 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
812 (delta * (eta1 * (pow(a1_mass, 2) * (pow(
pion_mass, 2) - s) -
813 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - 2 * s) *
816 pow(a1_mass, 2) * (-pow(
pion_mass, 2) + s) +
817 s * (pow(m_rho, 2) + 2 * s))) +
820 2 * C4 * s * (pow(a1_mass, 2) - pow(m_rho, 2) + 2 * s) +
823 pow(m_rho, 2) + 6 * s))) -
825 2 * C4 * s * (pow(a1_mass, 2) + pow(m_rho, 2) + 2 * s) -
829 (pow(a1_mass, 2) + pow(m_rho, 2) + 6 * s))))) *
831 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
832 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
833 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
834 (pow(eta1 - eta2, 4) * pow(tmin, 3)) /
835 (3. * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
836 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
837 (8 * pow(eta1 - eta2, 2) * (delta - 4 * C4 * pow(m_rho, 2)) *
839 (3. * pow(m_rho, 2) *
840 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
841 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
842 (16 * pow(delta - 4 * C4 * pow(m_rho, 2), 2) * pow(tmin, 3)) /
843 (3. * pow(m_rho, 4) *
844 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
845 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
846 (4 * (-2 + delta) * eta1 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
849 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
850 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
851 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
852 (2 * pow(eta1 - eta2, 4) * (pow(a1_mass, 2) - s) * s * pow(tmin, 3)) /
854 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
855 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
856 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
857 (2 * pow(eta1 - eta2, 2) * s *
858 (-2 * eta1 * eta2 * s + pow(eta2, 2) * s +
859 pow(eta1, 2) * (-pow(m_rho, 2) + s)) *
862 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
863 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
864 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
865 (4 * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
866 (2 * eta2 * (delta - 4 * C4 * pow(m_rho, 2)) * s +
867 eta1 * (-2 * delta * s + pow(m_rho, 2) * (-2 + delta + 8 * C4 * s))) *
869 (3. * pow(m_rho, 2) *
870 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
871 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
872 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
873 (2 * pow(eta1 - eta2, 2) *
874 (pow(eta1, 2) * (2 * pow(a1_mass, 6) -
875 3 * pow(a1_mass, 4) *
876 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) +
877 pow(m_rho, 2) * (pow(m_rho, 2) - s) * s -
878 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s) +
880 (-2 * pow(m_rho, 4) + 3 * pow(m_rho, 2) * s) +
883 pow(
pion_mass, 2) * (8 * pow(m_rho, 2) - 4 * s) -
884 4 * pow(m_rho, 2) * s + 2 * pow(s, 2))) -
886 (2 * pow(a1_mass, 6) -
888 (pow(m_rho, 2) + s) +
889 pow(a1_mass, 4) * (-6 * pow(
pion_mass, 2) + 3 * s) +
892 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) -
893 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) +
894 pow(eta2, 2) * (2 * pow(a1_mass, 6) +
895 3 * pow(a1_mass, 4) *
896 (-2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s) +
899 pow(
pion_mass, 2) * (2 * pow(m_rho, 2) - s) +
903 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) -
904 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)))) *
905 log(abs(-pow(a1_mass, 2) + tmax))) /
906 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
907 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) -
908 (2 * pow(eta1 - eta2, 2) * (pow(a1_mass, 2) - s) *
911 2 * pow(a1_mass, 2) * pow(
pion_mass, 4) * s +
913 (pow(a1_mass, 4) * (pow(m_rho, 2) - 4 * s) +
914 4 * pow(a1_mass, 2) * (pow(m_rho, 2) - s) * s +
915 pow(m_rho, 2) * pow(s, 2)) +
916 pow(a1_mass, 2) * s *
917 (pow(a1_mass, 4) + s * (-2 * pow(m_rho, 2) + s) +
918 pow(a1_mass, 2) * (-2 * pow(m_rho, 2) + 3 * s))) +
921 4 * pow(a1_mass, 2) * pow(
pion_mass, 2) * s *
922 (pow(a1_mass, 2) + pow(m_rho, 2) + s) +
924 pow(a1_mass, 2) * (pow(m_rho, 2) + 2 * s)) +
925 pow(a1_mass, 2) * s *
926 (pow(a1_mass, 4) + s * (pow(m_rho, 2) + s) +
927 pow(a1_mass, 2) * (pow(m_rho, 2) + 3 * s))) +
930 pow(a1_mass, 2) * s *
931 (pow(a1_mass, 4) + 2 * pow(m_rho, 4) -
932 3 * pow(a1_mass, 2) * (pow(m_rho, 2) - s) -
933 3 * pow(m_rho, 2) * s + pow(s, 2)) +
935 (2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s +
936 pow(a1_mass, 2) * (-3 * pow(m_rho, 2) + 2 * s)) +
938 (pow(a1_mass, 4) * (pow(m_rho, 2) - 2 * s) +
939 pow(m_rho, 2) * s * (-pow(m_rho, 2) + s) -
940 pow(a1_mass, 2) * (pow(m_rho, 4) - 4 * pow(m_rho, 2) * s +
942 log(abs(-pow(a1_mass, 2) + tmax))) /
943 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
944 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
945 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
948 (eta2 * (pow(
pion_mass, 6) * pow(m_rho, 2) *
950 pow(a1_mass, 8) * (-pow(
pion_mass, 2) + s) +
953 s * (pow(m_rho, 2) + 2 * s)) +
956 pow(
pion_mass, 4) * (pow(m_rho, 2) - 14 * s) +
958 (2 * pow(m_rho, 4) - pow(m_rho, 2) * s -
960 s * (-2 * pow(m_rho, 4) + pow(m_rho, 2) * s +
964 pow(
pion_mass, 4) * (pow(m_rho, 2) - 8 * s) +
965 s * (2 * pow(m_rho, 4) + pow(m_rho, 2) * s -
968 (-2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s +
971 (pow(a1_mass, 8) * (pow(
pion_mass, 2) - s) +
973 (-5 * pow(
pion_mass, 4) + (pow(m_rho, 2) - 2 * s) * s +
974 pow(
pion_mass, 2) * (-2 * pow(m_rho, 2) + 7 * s)) +
977 pow(
pion_mass, 4) * (4 * pow(m_rho, 2) - 5 * s) +
980 (pow(m_rho, 4) + 3 * pow(m_rho, 2) * s -
984 pow(
pion_mass, 4) * (9 * pow(m_rho, 2) - 14 * s) +
985 pow(
pion_mass, 2) * s * (-9 * pow(m_rho, 2) + 7 * s) +
986 s * (pow(m_rho, 4) + pow(m_rho, 2) * s - pow(s, 2))) +
989 pow(m_rho, 4) * s * (-pow(m_rho, 2) + s) +
990 pow(
pion_mass, 6) * (-11 * pow(m_rho, 2) + 8 * s) +
992 (-3 * pow(m_rho, 4) + 17 * pow(m_rho, 2) * s -
995 (pow(m_rho, 6) - 5 * pow(m_rho, 2) * pow(s, 2) +
999 (pow(
pion_mass, 8) * (1 + 2 * C4 * pow(m_rho, 2)) -
1000 2 * C4 * pow(
pion_mass, 6) * pow(m_rho, 2) * s +
1001 2 * C4 * pow(a1_mass, 8) * (-pow(
pion_mass, 2) + s) +
1005 (-4 + 6 * C4 * pow(m_rho, 2) + 28 * C4 * s) +
1007 (pow(m_rho, 2) + s - 3 * C4 * pow(m_rho, 2) * s -
1008 7 * C4 * pow(s, 2)) +
1009 s * (-2 * pow(m_rho, 2) + s + 2 * C4 * pow(s, 2))) +
1012 2 * C4 * s * (pow(m_rho, 2) + 2 * s) +
1014 (1 - 2 * C4 * (pow(m_rho, 2) + 7 * s))) +
1018 (-2 + 3 * C4 * pow(m_rho, 2) + 8 * C4 * s) +
1019 s * (2 * pow(m_rho, 2) + s - 2 * C4 * pow(s, 2)) +
1021 (pow(m_rho, 2) * (-1 + 3 * C4 * s) +
1022 s * (-3 + 5 * C4 * s)))) +
1024 (pow(
pion_mass, 8) * (-1 + 6 * C4 * pow(m_rho, 2)) +
1025 2 * C4 * pow(a1_mass, 8) * (pow(
pion_mass, 2) - s) +
1027 2 * pow(
pion_mass, 6) * pow(m_rho, 2) * (2 - 5 * C4 * s) -
1031 (1 + 2 * C4 * (pow(m_rho, 2) - 7 * s)) +
1032 2 * C4 * s * (-pow(m_rho, 2) + 2 * s)) -
1034 (pow(m_rho, 2) + s * (3 - 4 * C4 * s)) +
1038 (2 + 5 * C4 * pow(m_rho, 2) - 14 * C4 * s) +
1040 (-1 - 7 * C4 * pow(m_rho, 2) + 7 * C4 * s) +
1041 s * (-(s * (1 + 2 * C4 * s)) +
1042 pow(m_rho, 2) * (1 + 4 * C4 * s))) -
1045 pow(m_rho, 2) * (pow(m_rho, 2) - s) * s +
1047 (2 + 7 * C4 * pow(m_rho, 2) - 8 * C4 * s) +
1049 (-pow(m_rho, 4) + pow(s, 2) +
1050 8 * C4 * pow(m_rho, 2) * pow(s, 2) -
1051 2 * C4 * pow(s, 3)) +
1053 (pow(m_rho, 2) * (3 - 22 * C4 * s) +
1054 2 * s * (-3 + 5 * C4 * s)))))) *
1055 log(abs(-pow(a1_mass, 2) + tmax))) /
1056 ((pow(a1_mass, 2) - pow(
pion_mass, 2)) * pow(m_rho, 2) *
1058 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1059 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1060 (16 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
1062 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1063 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) -
1064 (8 * pow(-2 + delta, 2) *
1066 pow(pow(m_rho, 2) - s, 2)) *
1069 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1070 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1071 (8 * (-2 + delta) * (eta1 - eta2) * pow(
pion_mass, 2) *
1073 eta1 * pow(m_rho, 2)) *
1075 ((pow(a1_mass, 2) - pow(
pion_mass, 2)) *
1076 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1077 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1078 (8 * (-2 + delta) * (eta1 - eta2) * pow(
pion_mass, 2) *
1079 (pow(a1_mass, 2) - s) * (pow(
pion_mass, 2) - s) *
1081 eta1 * (pow(
pion_mass, 2) - pow(m_rho, 2) + s)) *
1083 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1084 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1085 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1087 (-(delta * (4 * pow(
pion_mass, 2) - pow(m_rho, 2)) *
1088 (pow(
pion_mass, 2) + pow(m_rho, 2) - s)) +
1090 (8 * C4 * pow(
pion_mass, 4) - pow(m_rho, 2) + s +
1091 pow(
pion_mass, 2) * (3 - 8 * C4 * s))) *
1093 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1094 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
1095 (2 * pow(eta1 - eta2, 2) *
1096 (pow(eta1, 2) * (2 * pow(a1_mass, 6) -
1097 3 * pow(a1_mass, 4) *
1098 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) +
1099 pow(m_rho, 2) * (pow(m_rho, 2) - s) * s -
1100 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s) +
1102 (-2 * pow(m_rho, 4) + 3 * pow(m_rho, 2) * s) +
1104 (4 * pow(
pion_mass, 4) + pow(m_rho, 4) +
1105 pow(
pion_mass, 2) * (8 * pow(m_rho, 2) - 4 * s) -
1106 4 * pow(m_rho, 2) * s + 2 * pow(s, 2))) -
1108 (2 * pow(a1_mass, 6) -
1110 (pow(m_rho, 2) + s) +
1111 pow(a1_mass, 4) * (-6 * pow(
pion_mass, 2) + 3 * s) +
1113 (4 * pow(
pion_mass, 4) - pow(m_rho, 4) +
1114 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s) -
1115 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) +
1116 pow(eta2, 2) * (2 * pow(a1_mass, 6) +
1117 3 * pow(a1_mass, 4) *
1118 (-2 * pow(
pion_mass, 2) + pow(m_rho, 2) + s) +
1121 pow(
pion_mass, 2) * (2 * pow(m_rho, 2) - s) +
1122 pow(m_rho, 2) * s) +
1124 (4 * pow(
pion_mass, 4) + pow(m_rho, 4) -
1125 2 * pow(m_rho, 2) * s + 2 * pow(s, 2) -
1126 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)))) *
1127 log(abs(-pow(a1_mass, 2) + tmin))) /
1128 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1129 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) +
1130 (2 * pow(eta1 - eta2, 2) * (pow(a1_mass, 2) - s) *
1133 2 * pow(a1_mass, 2) * pow(
pion_mass, 4) * s +
1135 (pow(a1_mass, 4) * (pow(m_rho, 2) - 4 * s) +
1136 4 * pow(a1_mass, 2) * (pow(m_rho, 2) - s) * s +
1137 pow(m_rho, 2) * pow(s, 2)) +
1138 pow(a1_mass, 2) * s *
1139 (pow(a1_mass, 4) + s * (-2 * pow(m_rho, 2) + s) +
1140 pow(a1_mass, 2) * (-2 * pow(m_rho, 2) + 3 * s))) +
1143 4 * pow(a1_mass, 2) * pow(
pion_mass, 2) * s *
1144 (pow(a1_mass, 2) + pow(m_rho, 2) + s) +
1145 pow(
pion_mass, 4) * (pow(m_rho, 2) * s +
1146 pow(a1_mass, 2) * (pow(m_rho, 2) + 2 * s)) +
1147 pow(a1_mass, 2) * s *
1148 (pow(a1_mass, 4) + s * (pow(m_rho, 2) + s) +
1149 pow(a1_mass, 2) * (pow(m_rho, 2) + 3 * s))) +
1152 pow(a1_mass, 2) * s *
1153 (pow(a1_mass, 4) + 2 * pow(m_rho, 4) -
1154 3 * pow(a1_mass, 2) * (pow(m_rho, 2) - s) -
1155 3 * pow(m_rho, 2) * s + pow(s, 2)) +
1157 (2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s +
1158 pow(a1_mass, 2) * (-3 * pow(m_rho, 2) + 2 * s)) +
1160 (pow(a1_mass, 4) * (pow(m_rho, 2) - 2 * s) +
1161 pow(m_rho, 2) * s * (-pow(m_rho, 2) + s) -
1162 pow(a1_mass, 2) * (pow(m_rho, 4) - 4 * pow(m_rho, 2) * s +
1164 log(abs(-pow(a1_mass, 2) + tmin))) /
1165 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1166 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1167 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
1168 (8 * (eta1 - eta2) *
1170 (eta2 * (pow(
pion_mass, 6) * pow(m_rho, 2) *
1172 pow(a1_mass, 8) * (-pow(
pion_mass, 2) + s) +
1175 s * (pow(m_rho, 2) + 2 * s)) +
1178 pow(
pion_mass, 4) * (pow(m_rho, 2) - 14 * s) +
1180 (2 * pow(m_rho, 4) - pow(m_rho, 2) * s -
1182 s * (-2 * pow(m_rho, 4) + pow(m_rho, 2) * s +
1186 pow(
pion_mass, 4) * (pow(m_rho, 2) - 8 * s) +
1187 s * (2 * pow(m_rho, 4) + pow(m_rho, 2) * s -
1190 (-2 * pow(m_rho, 4) - 3 * pow(m_rho, 2) * s +
1193 (pow(a1_mass, 8) * (pow(
pion_mass, 2) - s) +
1195 (-5 * pow(
pion_mass, 4) + (pow(m_rho, 2) - 2 * s) * s +
1196 pow(
pion_mass, 2) * (-2 * pow(m_rho, 2) + 7 * s)) +
1199 pow(
pion_mass, 4) * (4 * pow(m_rho, 2) - 5 * s) +
1202 (pow(m_rho, 4) + 3 * pow(m_rho, 2) * s -
1206 pow(
pion_mass, 4) * (9 * pow(m_rho, 2) - 14 * s) +
1207 pow(
pion_mass, 2) * s * (-9 * pow(m_rho, 2) + 7 * s) +
1208 s * (pow(m_rho, 4) + pow(m_rho, 2) * s - pow(s, 2))) +
1211 pow(m_rho, 4) * s * (-pow(m_rho, 2) + s) +
1212 pow(
pion_mass, 6) * (-11 * pow(m_rho, 2) + 8 * s) +
1214 (-3 * pow(m_rho, 4) + 17 * pow(m_rho, 2) * s -
1217 (pow(m_rho, 6) - 5 * pow(m_rho, 2) * pow(s, 2) +
1221 (pow(
pion_mass, 8) * (1 + 2 * C4 * pow(m_rho, 2)) -
1222 2 * C4 * pow(
pion_mass, 6) * pow(m_rho, 2) * s +
1223 2 * C4 * pow(a1_mass, 8) * (-pow(
pion_mass, 2) + s) +
1227 (-4 + 6 * C4 * pow(m_rho, 2) + 28 * C4 * s) +
1229 (pow(m_rho, 2) + s - 3 * C4 * pow(m_rho, 2) * s -
1230 7 * C4 * pow(s, 2)) +
1231 s * (-2 * pow(m_rho, 2) + s + 2 * C4 * pow(s, 2))) +
1234 2 * C4 * s * (pow(m_rho, 2) + 2 * s) +
1236 (1 - 2 * C4 * (pow(m_rho, 2) + 7 * s))) +
1240 (-2 + 3 * C4 * pow(m_rho, 2) + 8 * C4 * s) +
1241 s * (2 * pow(m_rho, 2) + s - 2 * C4 * pow(s, 2)) +
1243 (pow(m_rho, 2) * (-1 + 3 * C4 * s) +
1244 s * (-3 + 5 * C4 * s)))) +
1246 (pow(
pion_mass, 8) * (-1 + 6 * C4 * pow(m_rho, 2)) +
1247 2 * C4 * pow(a1_mass, 8) * (pow(
pion_mass, 2) - s) +
1249 2 * pow(
pion_mass, 6) * pow(m_rho, 2) * (2 - 5 * C4 * s) -
1253 (1 + 2 * C4 * (pow(m_rho, 2) - 7 * s)) +
1254 2 * C4 * s * (-pow(m_rho, 2) + 2 * s)) -
1256 (pow(m_rho, 2) + s * (3 - 4 * C4 * s)) +
1260 (2 + 5 * C4 * pow(m_rho, 2) - 14 * C4 * s) +
1262 (-1 - 7 * C4 * pow(m_rho, 2) + 7 * C4 * s) +
1263 s * (-(s * (1 + 2 * C4 * s)) +
1264 pow(m_rho, 2) * (1 + 4 * C4 * s))) -
1267 pow(m_rho, 2) * (pow(m_rho, 2) - s) * s +
1269 (2 + 7 * C4 * pow(m_rho, 2) - 8 * C4 * s) +
1271 (-pow(m_rho, 4) + pow(s, 2) +
1272 8 * C4 * pow(m_rho, 2) * pow(s, 2) -
1273 2 * C4 * pow(s, 3)) +
1275 (pow(m_rho, 2) * (3 - 22 * C4 * s) +
1276 2 * s * (-3 + 5 * C4 * s)))))) *
1277 log(abs(-pow(a1_mass, 2) + tmin))) /
1278 ((pow(a1_mass, 2) - pow(
pion_mass, 2)) * pow(m_rho, 2) *
1280 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1281 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
1282 (16 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
1284 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1285 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) +
1286 (8 * pow(-2 + delta, 2) *
1288 pow(pow(m_rho, 2) - s, 2)) *
1291 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1292 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
1293 (8 * (-2 + delta) * (eta1 - eta2) * pow(
pion_mass, 2) *
1295 eta1 * pow(m_rho, 2)) *
1297 ((pow(a1_mass, 2) - pow(
pion_mass, 2)) *
1298 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1299 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
1300 (8 * (-2 + delta) * (eta1 - eta2) * pow(
pion_mass, 2) *
1301 (pow(a1_mass, 2) - s) * (pow(
pion_mass, 2) - s) *
1303 eta1 * (pow(
pion_mass, 2) - pow(m_rho, 2) + s)) *
1305 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1306 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1307 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1309 (delta * (4 * pow(
pion_mass, 2) - pow(m_rho, 2)) *
1310 (pow(
pion_mass, 2) + pow(m_rho, 2) - s) -
1312 (8 * C4 * pow(
pion_mass, 4) - pow(m_rho, 2) + s +
1313 pow(
pion_mass, 2) * (3 - 8 * C4 * s))) *
1315 (pow(m_rho, 2) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1316 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))))) /
1324 const double s,
const double t,
const double m_rho) {
1325 const double spin_deg_factor = 3.0;
1334 const double diff_xs =
1335 (pow(
Const, 2) * pow(ghat, 4) *
1336 ((-8 * pow(-2 + delta, 2) * pow(
pion_mass, 2)) /
1337 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - s, 2)) -
1338 (8 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
1339 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - t, 2) -
1340 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + t))) /
1342 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1343 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
1345 (4 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
1346 (-(eta2 * (pow(
pion_mass, 2) + s)) + eta1 * (-pow(m_rho, 2) + s + t)) *
1348 t * (-pow(m_rho, 2) + 2 * s + t))) /
1349 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1350 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1351 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
1354 (pow(
pion_mass, 4) * (2 - 3 * delta + 8 * C4 * pow(m_rho, 2)) +
1355 pow(m_rho, 4) * (-2 + delta + 8 * C4 * t) +
1356 t * ((2 + 3 * delta) * s + 2 * delta * t) +
1358 (-8 * C4 * pow(m_rho, 4) + (-2 + delta) * s -
1359 (2 + 3 * delta) * t + 4 * pow(m_rho, 2) * (1 + 4 * C4 * t)) -
1360 pow(m_rho, 2) * (t * (-2 + 3 * delta + 8 * C4 * t) +
1361 s * (-2 + delta + 16 * C4 * t)))) /
1363 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1364 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
1366 (4 * (-2 + delta) * (eta1 - eta2) * (pow(a1_mass, 2) - s) *
1369 s * (pow(m_rho, 2) - s - 2 * t)) +
1371 s * (-pow(m_rho, 2) + s) * (-pow(m_rho, 2) + s + t) +
1372 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s + t) -
1373 pow(
pion_mass, 2) * (pow(m_rho, 4) + 2 * s * (s - t) +
1374 pow(m_rho, 2) * (-s + t))))) /
1375 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1377 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1378 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1379 (pow(eta1 - eta2, 2) *
1382 pow(
pion_mass, 4) * (pow(pow(m_rho, 2) + 2 * s, 2) - 2 * s * t) +
1383 pow(s, 2) * (pow(pow(m_rho, 2) + s, 2) +
1384 2 * (-pow(m_rho, 2) + s) * t + 2 * pow(t, 2)) -
1386 (pow(m_rho, 4) + pow(m_rho, 2) * (2 * s - t) +
1390 pow(
pion_mass, 4) * (pow(m_rho, 4) + 2 * pow(m_rho, 2) * s +
1391 2 * s * (-2 * s + t)) -
1393 (pow(m_rho, 4) + pow(m_rho, 2) * (s + t) - 2 * s * (s + t)) +
1394 pow(s, 2) * (pow(m_rho, 4) - pow(s, 2) + 2 * pow(m_rho, 2) * t -
1398 pow(
pion_mass, 4) * (3 * pow(m_rho, 4) + 2 * s * (2 * s - t) +
1399 2 * pow(m_rho, 2) * (-3 * s + t)) -
1400 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s) *
1401 (-2 * s * (s + t) + pow(m_rho, 2) * (2 * s + t)) +
1402 s * (-pow(m_rho, 2) + s) *
1403 (pow(s, 2) + 2 * s * t + 2 * pow(t, 2) -
1404 pow(m_rho, 2) * (s + 2 * t))))) /
1405 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1406 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1407 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1408 (pow(eta1 - eta2, 2) *
1412 (pow(m_rho, 4) + 2 * (pow(m_rho, 2) + s) * t -
1414 pow(t, 2) * (-pow(m_rho, 4) - 2 * pow(m_rho, 2) * s +
1415 2 * pow(s, 2) + 2 * s * t + pow(t, 2)) +
1417 (pow(m_rho, 4) + pow(m_rho, 2) * (s + t) -
1421 pow(
pion_mass, 4) * (pow(m_rho, 4) + 4 * pow(m_rho, 2) * t -
1422 2 * (s - 2 * t) * t) +
1423 pow(t, 2) * (pow(m_rho, 4) + 2 * pow(s, 2) + 2 * s * t +
1424 pow(t, 2) + 2 * pow(m_rho, 2) * (-s + t)) -
1426 (pow(m_rho, 4) - pow(m_rho, 2) * (s - 2 * t) +
1431 (3 * pow(m_rho, 4) + 2 * pow(m_rho, 2) * (s - 3 * t) -
1432 2 * (s - 2 * t) * t) +
1433 t * (-pow(m_rho, 2) + t) *
1434 (2 * pow(s, 2) + 2 * s * t + pow(t, 2) -
1435 pow(m_rho, 2) * (2 * s + t)) -
1436 2 * pow(
pion_mass, 2) * (-pow(m_rho, 2) + t) *
1437 (2 * t * (s + t) - pow(m_rho, 2) * (s + 2 * t))))) /
1438 ((pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1439 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
1440 pow(pow(a1_mass, 2) - t, 2)) +
1442 ((-2 + delta) * pow(m_rho, 6) +
1443 pow(
pion_mass, 6) * (-2 + 3 * delta - 8 * C4 * pow(m_rho, 2)) +
1444 s * t * ((-2 + 3 * delta) * s + 4 * delta * t) +
1446 (8 * C4 * pow(m_rho, 4) + 4 * delta * s + 2 * t - 3 * delta * t -
1447 pow(m_rho, 2) * (2 + delta + 16 * C4 * s - 8 * C4 * t)) +
1449 (-((-2 + delta) * t) + s * (4 - 2 * delta + 8 * C4 * t)) +
1451 (s * (-2 + delta - 8 * C4 * t) - 2 * t * (delta + 8 * C4 * t)) +
1453 (s * ((2 - 3 * delta) * s - 8 * delta * t) -
1454 pow(m_rho, 4) * (-6 + 3 * delta + 8 * C4 * (s + t)) +
1455 pow(m_rho, 2) * (8 * C4 * pow(s, 2) + 4 * (-1 + delta) * t +
1456 s * (-8 + 6 * delta + 32 * C4 * t))))) /
1457 (pow(m_rho, 2) * (pow(
pion_mass, 2) - s) *
1458 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1459 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
1461 (2 * pow(eta1 - eta2, 2) * (pow(a1_mass, 2) - s) *
1463 pow(
pion_mass, 4) * (2 * pow(m_rho, 4) + 2 * s * t -
1464 3 * pow(m_rho, 2) * (s + t)) +
1466 (2 * pow(m_rho, 4) + pow(s, 2) + 3 * s * t +
1467 pow(t, 2) - 3 * pow(m_rho, 2) * (s + t)) -
1468 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s - t) *
1469 (-2 * s * t + pow(m_rho, 2) * (s + t))) +
1472 4 * pow(
pion_mass, 2) * s * t * (pow(m_rho, 2) + s + t) +
1473 pow(
pion_mass, 4) * (2 * s * t + pow(m_rho, 2) * (s + t)) +
1475 (pow(s, 2) + 3 * s * t + pow(t, 2) +
1476 pow(m_rho, 2) * (s + t))) +
1481 (pow(s, 2) + 3 * s * t + pow(t, 2) -
1482 2 * pow(m_rho, 2) * (s + t)) -
1484 (-4 * s * t * (s + t) +
1485 pow(m_rho, 2) * (pow(s, 2) + 4 * s * t + pow(t, 2)))))) /
1486 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1487 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1488 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
1489 (pow(a1_mass, 2) - t)) +
1490 (8 * (pow(delta, 2) *
1491 (8 * pow(
pion_mass, 4) + 3 * pow(m_rho, 4) -
1492 6 * pow(m_rho, 2) * (s + t) + 2 * pow(s + t, 2) +
1493 4 * pow(
pion_mass, 2) * (3 * pow(m_rho, 2) - 2 * (s + t))) -
1494 4 * delta * pow(m_rho, 2) *
1496 pow(m_rho, 2) * (3 - 6 * C4 * (s + t)) +
1497 (s + t) * (-3 + 4 * C4 * (s + t)) +
1499 (3 + C4 * (6 * pow(m_rho, 2) - 8 * (s + t)))) +
1501 (3 + 4 * C4 * (2 * pow(
pion_mass, 2) - s - t) *
1502 (3 + C4 * (4 * pow(
pion_mass, 2) - 2 * (s + t)))))) /
1503 (pow(m_rho, 4) * (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1504 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1505 (4 * (eta1 - eta2) * (-pow(a1_mass, 2) + s) *
1506 (eta2 * (-2 * pow(
pion_mass, 4) * (delta - 4 * C4 * pow(m_rho, 2)) *
1507 (pow(m_rho, 2) + 4 * s) +
1509 (-2 * pow(m_rho, 4) * (-2 + delta + 8 * C4 * s) +
1510 8 * delta * s * (s + t) -
1511 pow(m_rho, 2) * ((-10 + delta) * s - (-2 + delta) * t +
1512 32 * C4 * s * (s + t))) +
1513 s * (2 * pow(m_rho, 4) * (-2 + delta + 4 * C4 * s) -
1514 2 * delta * pow(s + t, 2) +
1515 pow(m_rho, 2) * ((-6 + delta) * s + (-2 + delta) * t +
1516 8 * C4 * pow(s + t, 2)))) +
1518 (6 * C4 * pow(m_rho, 4) + 2 * delta * s +
1519 pow(m_rho, 2) * (1 - 2 * delta - 8 * C4 * s)) +
1520 2 * delta * s * pow(s + t, 2) -
1522 ((-6 + 5 * delta) * pow(s, 2) +
1523 2 * (-2 + 3 * delta) * s * t + (-2 + delta) * pow(t, 2) +
1524 8 * C4 * s * pow(s + t, 2)) +
1526 ((-2 + delta) * (3 * s + t) + 8 * C4 * s * (s + 2 * t)) -
1528 (4 * delta * s * (s + t) -
1529 pow(m_rho, 2) * (-6 * s + 7 * delta * s - 2 * t +
1530 3 * delta * t + 16 * C4 * s * (s + t)) +
1532 (-2 + delta + 4 * C4 * (2 * s + t)))))) /
1534 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
1535 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1536 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) +
1537 (4 * (eta1 - eta2) *
1540 s * (pow(m_rho, 2) - s - 2 * t)) *
1541 (eta1 * (pow(m_rho, 2) - s - t) + eta2 * (pow(
pion_mass, 2) + t))) /
1542 ((pow(
pion_mass, 2) - s) * (pow(a1_mass, 2) - t)) +
1546 pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * t) +
1547 (pow(m_rho, 2) - 2 * s - t) * t) +
1549 (pow(m_rho, 2) - t) * (pow(m_rho, 2) - s - t) * t +
1550 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s + t) -
1552 (pow(m_rho, 4) + pow(m_rho, 2) * (s - t) +
1553 2 * t * (-s + t))))) /
1554 ((-pow(a1_mass, 2) + t) * (-pow(
pion_mass, 2) + t)) +
1556 (-2 * pow(
pion_mass, 4) * (delta - 4 * C4 * pow(m_rho, 2)) *
1557 (pow(m_rho, 2) + 4 * t) +
1559 (8 * delta * t * (s + t) -
1560 2 * pow(m_rho, 4) * (-2 + delta + 8 * C4 * t) -
1561 pow(m_rho, 2) * (-((-2 + delta) * s) + (-10 + delta) * t +
1562 32 * C4 * t * (s + t))) +
1563 t * (-2 * delta * pow(s + t, 2) +
1564 2 * pow(m_rho, 4) * (-2 + delta + 4 * C4 * t) +
1565 pow(m_rho, 2) * ((-2 + delta) * s + (-6 + delta) * t +
1566 8 * C4 * pow(s + t, 2)))) +
1568 (2 * delta * t * pow(s + t, 2) -
1570 ((-2 + delta) * pow(s, 2) + 2 * (-2 + 3 * delta) * s * t +
1571 (-6 + 5 * delta) * pow(t, 2) +
1572 8 * C4 * t * pow(s + t, 2)) +
1574 (8 * C4 * t * (2 * s + t) + (-2 + delta) * (s + 3 * t)) +
1576 (6 * C4 * pow(m_rho, 4) + 2 * delta * t +
1577 pow(m_rho, 2) * (1 - 2 * delta - 8 * C4 * t)) -
1579 (4 * delta * t * (s + t) -
1580 pow(m_rho, 2) * (-2 * s + 3 * delta * s - 6 * t +
1581 7 * delta * t + 16 * C4 * t * (s + t)) +
1583 (-2 + delta + 4 * C4 * (s + 2 * t))))) /
1584 (pow(m_rho, 2) * (-pow(a1_mass, 2) + t)))) /
1585 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1586 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)))) /
1596 const double s,
const double m_rho) {
1604 const double &tmin = t_mandelstam[1];
1605 const double &tmax = t_mandelstam[0];
1606 const double spin_deg_factor = 3.0;
1610 (pow(
Const, 2) * pow(ghat, 4) *
1612 (0.25 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
1613 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
1614 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
1616 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - s, 2)) -
1618 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 4) - 12. * pow(m_rho, 6) +
1619 4. * pow(m_rho, 4) * s +
1620 delta * pow(m_rho, 2) *
1622 16. * pow(
pion_mass, 2) * pow(m_rho, 2) - 4. * pow(m_rho, 4) +
1623 16. * pow(m_rho, 2) * s + 4. * pow(s, 2)) +
1625 (8. * pow(
pion_mass, 6) + 9. * pow(m_rho, 6) +
1626 pow(
pion_mass, 4) * (4. * pow(m_rho, 2) - 4. * s) -
1627 13. * pow(m_rho, 4) * s - 5. * pow(m_rho, 2) * pow(s, 2) +
1629 pow(
pion_mass, 2) * (-2. * pow(m_rho, 4) +
1630 4. * pow(m_rho, 2) * s - 2. * pow(s, 2)))) *
1633 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
1634 (pow(a1_mass, 2) - 1. * s) *
1636 (pow(m_rho, 2) - 1. * s) * pow(s, 2) +
1637 pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 3. * s)) +
1639 pow(
pion_mass, 4) * (3. * pow(m_rho, 2) + s) +
1640 pow(
pion_mass, 2) * (-1. * pow(m_rho, 4) + pow(m_rho, 2) * s -
1642 s * (pow(m_rho, 4) - 2. * pow(m_rho, 2) * s + pow(s, 2)))) *
1645 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1646 2. * pow(a1_mass, 2) * s + pow(s, 2))) +
1647 (0.03125 * pow(eta1 - 1. * eta2, 2) *
1651 (-4. * pow(m_rho, 4) + 8. * pow(m_rho, 2) * s -
1653 pow(s, 2) * (1. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s +
1655 pow(
pion_mass, 4) * (3. * pow(m_rho, 4) -
1656 6. * pow(m_rho, 2) * s + 4. * pow(s, 2))) +
1660 (-2. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s -
1662 pow(s, 2) * (1. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s +
1664 pow(
pion_mass, 4) * (1. * pow(m_rho, 4) +
1665 4. * pow(m_rho, 2) * s + 4. * pow(s, 2))) +
1667 (-2. * pow(
pion_mass, 8) + 2. * pow(m_rho, 4) * pow(s, 2) -
1669 pow(
pion_mass, 4) * (2. * pow(m_rho, 4) +
1670 4. * pow(m_rho, 2) * s - 8. * pow(s, 2)) +
1672 (-4. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
1675 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1676 2. * pow(a1_mass, 2) * s + pow(s, 2)) +
1678 (0. - 4. * C4 * pow(m_rho, 8) - 0.5 * pow(m_rho, 4) * s +
1679 pow(m_rho, 6) * (2. + 2. * C4 * s) +
1681 (2. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) -
1682 1.5 * pow(
pion_mass, 4) * s - 2.375 * pow(m_rho, 4) * s -
1683 0.75 * pow(m_rho, 2) * pow(s, 2) + 0.125 * pow(s, 3) +
1685 (-1.5 * pow(m_rho, 4) + 0.5 * pow(m_rho, 2) * s)) +
1686 delta * pow(m_rho, 2) *
1689 (1. * s + pow(m_rho, 2) * (-1. - 2. * C4 * s)) +
1690 pow(m_rho, 2) * (2. * C4 * pow(m_rho, 4) +
1691 pow(m_rho, 2) * (-3. + 1. * C4 * s) +
1692 s * (2. + 1. * C4 * s)))) *
1697 (-1.5 + C4 * (-12. * pow(
pion_mass, 2) + 6. * s) +
1698 pow(C4, 2) * (-16. * pow(
pion_mass, 4) +
1699 16. * pow(
pion_mass, 2) * s - 4. * pow(s, 2))) +
1701 (1. * pow(
pion_mass, 6) + 0.125 * pow(m_rho, 6) +
1702 pow(
pion_mass, 4) * (-2. * pow(m_rho, 2) - 1. * s) +
1703 0.25 * pow(m_rho, 4) * s - 0.625 * pow(m_rho, 2) * pow(s, 2) +
1705 (-2.5 * pow(m_rho, 4) + 1.75 * pow(m_rho, 2) * s +
1706 0.25 * pow(s, 2))) +
1707 delta * pow(m_rho, 2) *
1708 (pow(
pion_mass, 4) * (1. + 8. * C4 * pow(m_rho, 2)) +
1709 pow(
pion_mass, 2) * (6. * C4 * pow(m_rho, 4) - 0.5 * s +
1710 pow(m_rho, 2) * (3. - 10. * C4 * s)) +
1711 pow(m_rho, 2) * (pow(m_rho, 2) * (1.5 - 1. * C4 * s) +
1712 s * (-2.5 + 3. * C4 * s)))) *
1717 (1. * pow(
pion_mass, 6) - 1. * pow(m_rho, 6) +
1719 (-2.499999999999999 * pow(m_rho, 2) - 2.5 * s) -
1720 1.5 * pow(m_rho, 4) * s + 2. * pow(m_rho, 2) * pow(s, 2) -
1723 (3.5 * pow(m_rho, 4) -
1724 1.5000000000000004 * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
1726 (pow(
pion_mass, 4) * (-6. - 8. * C4 * pow(m_rho, 2)) +
1727 2. * pow(s, 2) + pow(m_rho, 4) * (-4. - 8. * C4 * s) +
1728 pow(m_rho, 2) * s * (-2. + 8. * C4 * s) +
1729 pow(
pion_mass, 2) * (8. * C4 * pow(m_rho, 4) + 4. * s +
1730 pow(m_rho, 2) * (10. - 16. * C4 * s))) +
1732 (-2. * pow(
pion_mass, 6) - 5. * pow(m_rho, 2) * pow(s, 2) +
1735 (8. * pow(m_rho, 2) + 4. * C4 * pow(m_rho, 4) + 5. * s) +
1736 pow(m_rho, 4) * s * (4. - 4. * C4 * s) +
1737 pow(m_rho, 6) * (4. + 4. * C4 * s) +
1739 (-4. * C4 * pow(m_rho, 6) + 1. * pow(m_rho, 2) * s -
1740 4. * pow(s, 2) + pow(m_rho, 4) * (-12. + 8. * C4 * s)))) *
1742 (pow(m_rho, 4) * (pow(
pion_mass, 2) - 1. * s)) +
1743 (0.0625 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
1746 s * (8. * pow(m_rho, 2) + 6. * s)) +
1747 eta1 * (-12. * pow(
pion_mass, 4) + 4. * pow(m_rho, 4) +
1748 2. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
1749 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s))) +
1752 (8. * pow(
pion_mass, 6) - 2. * pow(m_rho, 6) +
1753 pow(
pion_mass, 4) * (2. * pow(m_rho, 2) - 2. * s) -
1754 3. * pow(m_rho, 4) * s + 4. * pow(m_rho, 2) * pow(s, 2) +
1756 pow(
pion_mass, 2) * (2. * pow(m_rho, 4) - 2. * pow(s, 2))) +
1757 eta2 * (pow(
pion_mass, 4) * (-2. * pow(m_rho, 2) - 4. * s) +
1758 pow(
pion_mass, 2) * s * (3. * pow(m_rho, 2) + 3. * s) +
1759 s * (-4. * pow(m_rho, 4) - 7. * pow(m_rho, 2) * s -
1760 1. * pow(s, 2))))) *
1763 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1764 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
1765 (0.1875 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
1766 (delta * (eta1 * (2.6666666666666665 * pow(
pion_mass, 6) +
1767 pow(
pion_mass, 4) * (-4. * pow(m_rho, 2) + 2. * s) +
1769 (-1.3333333333333333 * pow(m_rho, 4) +
1770 6. * pow(m_rho, 2) * s -
1771 3.3333333333333335 * pow(s, 2)) +
1772 s * (0.3333333333333333 * pow(m_rho, 4) -
1773 1.3333333333333333 * pow(m_rho, 2) * s +
1776 (-0.6666666666666666 * pow(m_rho, 2) - 4. * s) +
1777 s * (0.6666666666666666 * pow(m_rho, 4) -
1778 1. * pow(m_rho, 2) * s - 1. * pow(s, 2)) +
1780 (-0.6666666666666666 * pow(m_rho, 4) -
1781 0.3333333333333333 * pow(m_rho, 2) * s +
1782 3.6666666666666665 * pow(s, 2)))) +
1785 (2.6666666666666665 * pow(m_rho, 2) +
1786 10.666666666666666 * s) +
1788 (s * (3.3333333333333335 -
1789 10.666666666666666 * C4 * s) +
1790 pow(m_rho, 2) * (1.3333333333333333 -
1791 5.333333333333333 * C4 * s)) +
1792 s * (s * (-2. + 2.6666666666666665 * C4 * s) +
1793 pow(m_rho, 2) * (-1.3333333333333333 +
1794 2.6666666666666665 * C4 * s))) +
1797 (1.3333333333333333 + 8. * C4 * pow(m_rho, 2) -
1798 10.666666666666666 * C4 * s) +
1799 s * (s * (2. - 2.6666666666666665 * C4 * s) +
1800 pow(m_rho, 2) * (-2. + 2.6666666666666665 * C4 * s)) +
1802 (pow(m_rho, 2) * (2.6666666666666665 -
1803 10.666666666666666 * C4 * s) +
1804 s * (-4. + 10.666666666666666 * C4 * s))))) *
1807 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1808 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
1809 (0.0625 * (-2. + delta) * (eta1 - 1. * eta2) *
1810 (pow(a1_mass, 2) - 1. * s) * (pow(
pion_mass, 2) + s) *
1812 eta1 * (pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s)) *
1815 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1816 2. * pow(a1_mass, 2) * s + pow(s, 2))) +
1817 (0.03125 * pow(eta1 - 1. * eta2, 2) *
1818 (pow(eta1, 2) * (pow(m_rho, 2) - 1. * s) + 2. * eta1 * eta2 * s -
1819 1. * pow(eta2, 2) * s) *
1820 (pow(
pion_mass, 4) + (pow(m_rho, 2) - 1. * s) * s +
1821 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 2. * s)) *
1823 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1824 2. * pow(a1_mass, 2) * s + pow(s, 2)) -
1826 (-1. * pow(m_rho, 4) + 4. * C4 * pow(m_rho, 6) +
1827 delta * pow(m_rho, 2) *
1828 (2. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
1829 pow(
pion_mass, 2) * (2. - 4. * C4 * pow(m_rho, 2)) - 2. * s) +
1831 (1. * pow(
pion_mass, 4) + 0.25 * pow(m_rho, 4) -
1833 pow(
pion_mass, 2) * (-3. * pow(m_rho, 2) + 2. * s))) *
1837 (0. - 4. * pow(m_rho, 4) +
1838 delta * (16. * pow(m_rho, 4) - 8. * pow(m_rho, 2) * s) +
1840 (4. * pow(
pion_mass, 4) - 3. * pow(m_rho, 4) +
1841 2. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
1842 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s))) *
1846 (-32. * C4 * pow(m_rho, 4) * s +
1847 pow(delta, 2) * (1. * pow(
pion_mass, 4) +
1849 (-1.0000000000000009 * pow(m_rho, 2) - 2. * s) +
1850 s * (-3. * pow(m_rho, 2) + 1. * s)) +
1853 (6. * pow(m_rho, 2) + 16. * C4 * pow(m_rho, 4) - 2. * s) * s +
1854 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) + 4. * s))) *
1856 (pow(m_rho, 4) * (pow(
pion_mass, 2) - 1. * s)) -
1858 (C4 * pow(m_rho, 6) *
1859 (2.6666666666666665 + 7.111111111111112 * C4 * pow(
pion_mass, 2) -
1860 3.555555555555556 * C4 * s) +
1861 pow(delta, 2) * (0.11111111111111112 * pow(m_rho, 4) +
1863 (1. * pow(m_rho, 2) - 0.22222222222222224 * s) -
1864 0.22222222222222224 * pow(m_rho, 2) * s +
1865 0.11111111111111112 * pow(s, 2)) +
1866 delta * pow(m_rho, 2) *
1867 (-2.2222222222222223 * C4 * pow(m_rho, 4) +
1868 pow(
pion_mass, 2) * (-0.6666666666666666 -
1869 2.6666666666666665 * C4 * pow(m_rho, 2)) +
1870 0.22222222222222224 * s +
1872 (-0.22222222222222224 + 1.777777777777778 * C4 * s))) *
1875 (0.03125 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
1876 (pow(m_rho, 2) * (-2. * eta2 * pow(
pion_mass, 2) -
1877 5.999999999999999 * eta1 * pow(m_rho, 2) +
1878 8. * eta1 * s - 2. * eta2 * s) +
1880 (eta1 * (-5.999999999999999 * pow(
pion_mass, 4) +
1881 5. * pow(m_rho, 4) +
1882 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
1883 5.999999999999999 * pow(m_rho, 2) * s + 1. * pow(s, 2)) +
1885 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 2. * s) +
1886 s * (5. * pow(m_rho, 2) + 2. * s)))) *
1889 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1890 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
1891 (0.15625 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
1893 (eta1 * (-1.2 * pow(
pion_mass, 4) + 0.6 * pow(m_rho, 4) +
1894 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 2.4 * s) -
1895 1.6 * pow(m_rho, 2) * s + 1. * pow(s, 2)) +
1897 (1. * pow(m_rho, 2) - 0.4 * s) * s +
1898 pow(
pion_mass, 2) * (0.2 * pow(m_rho, 2) + 1.2 * s))) +
1900 (eta2 * (pow(
pion_mass, 2) * (-0.4 - 6.4 * C4 * s) +
1901 s * (-0.4 + 3.2 * C4 * s)) +
1902 eta1 * (s * (0.8 - 3.2 * C4 * s) +
1903 pow(m_rho, 2) * (-0.4 + 3.2 * C4 * s) +
1905 (-0.8 - 3.2 * C4 * pow(m_rho, 2) + 6.4 * C4 * s)))) *
1908 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1909 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
1910 (0.20833333333333331 * delta *
1911 (-0.8 * pow(m_rho, 2) + 0.8 * C4 * pow(m_rho, 4) +
1912 delta * (0.8 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.7 * s)) *
1916 (5.333333333333333 * pow(C4, 2) * pow(m_rho, 6) +
1917 delta * (-0.6666666666666666 * pow(m_rho, 2) -
1918 1.3333333333333333 * C4 * pow(m_rho, 4)) +
1920 (1. * pow(
pion_mass, 2) + 1.1666666666666667 * pow(m_rho, 2) -
1921 0.6666666666666666 * s)) *
1924 (0.10416666666666666 * delta *
1925 (-0.8 * pow(m_rho, 2) +
1926 delta * (0.4 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.6 * s)) *
1929 (0.020833333333333332 * pow(eta1 - 1. * eta2, 2) * s *
1930 (-2. * eta1 * eta2 * s + pow(eta2, 2) * s +
1931 pow(eta1, 2) * (-1. * pow(m_rho, 2) + s)) *
1933 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1934 2. * pow(a1_mass, 2) * s + pow(s, 2)) +
1935 (0.10416666666666666 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
1936 (0.4 * eta1 * pow(m_rho, 2) +
1937 delta * (-0.2 * eta2 * pow(
pion_mass, 2) - 0.2 * eta2 * s +
1938 eta1 * (-0.4 * pow(
pion_mass, 2) - 0.8 * pow(m_rho, 2) +
1942 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1943 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
1944 (0.14583333333333331 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
1945 (delta * (-0.14285714285714285 * eta2 * pow(
pion_mass, 2) -
1946 0.42857142857142855 * eta2 * s +
1947 eta1 * (-0.2857142857142857 * pow(
pion_mass, 2) -
1948 0.5714285714285714 * pow(m_rho, 2) + 1. * s)) +
1950 (1.1428571428571428 * C4 * eta2 * s +
1951 eta1 * (0.2857142857142857 - 1.1428571428571428 * C4 * s))) *
1954 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1955 2. * pow(a1_mass, 2) * s + pow(s, 2))) +
1957 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
1959 0.25 * pow(2. - 1. * delta, 2) * pow(m_rho, 10) -
1960 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(m_rho, 6) *
1962 pow(2. - 1. * delta, 2) * pow(
pion_mass, 2) * pow(m_rho, 6) *
1963 (-1. * pow(m_rho, 2) + 1. * s)) /
1964 (pow(m_rho, 6) * (-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmax)) +
1966 (0. - 2. * pow(
pion_mass, 4) * pow(m_rho, 4) - 0.5 * pow(m_rho, 8) +
1967 delta * pow(m_rho, 4) *
1968 (2. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 4) +
1970 (-2. * pow(m_rho, 2) - 1.9999999999999998 * s)) +
1971 pow(
pion_mass, 2) * (2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s) +
1972 pow(delta, 2) * pow(m_rho, 2) *
1973 (-2.220446049250313e-16 * pow(
pion_mass, 6) -
1974 0.125 * pow(m_rho, 6) +
1976 (-0.5 * pow(m_rho, 2) + 2.220446049250313e-16 * s) +
1978 (0.5 * pow(m_rho, 4) + 0.5 * pow(m_rho, 2) * s))) *
1979 log(abs(-1. * pow(
pion_mass, 2) + 0.5 * s + 0.5 * tmax))) /
1980 (pow(m_rho, 4) * (pow(
pion_mass, 2) - 1. * s)) -
1981 (0.25 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
1982 (eta2 * ((-2. + 1. * delta) * pow(
pion_mass, 6) +
1983 (6. - 3. * delta) * pow(
pion_mass, 4) * s +
1984 pow(s, 2) * ((4. - 2. * delta) * pow(m_rho, 2) +
1985 (2. - 1. * delta) * s) +
1987 ((-4. + 2. * delta) * pow(m_rho, 2) +
1988 (-6. + 3. * delta) * s)) +
1989 eta1 * ((2. - 1. * delta) * pow(
pion_mass, 6) +
1990 (2. - 1. * delta) * pow(m_rho, 4) * s +
1991 (-2. + 1. * delta) * pow(s, 3) +
1992 pow(
pion_mass, 4) * ((4. - 2. * delta) * pow(m_rho, 2) +
1993 (-6. + 3. * delta) * s) +
1994 pow(
pion_mass, 2) * ((-2. + 1. * delta) * pow(m_rho, 4) +
1995 (-4. + 2. * delta) * pow(m_rho, 2) * s +
1996 (6. - 3. * delta) * pow(s, 2)))) *
1997 log(abs(-2. * pow(
pion_mass, 2) + s + tmax))) /
1998 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
1999 2. * pow(a1_mass, 2) * s + pow(s, 2)) +
2001 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 6) + 4. * pow(m_rho, 8) -
2002 8. * pow(m_rho, 6) * s +
2003 delta * pow(m_rho, 4) *
2004 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) +
2005 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 16. * s) +
2006 8. * pow(m_rho, 2) * s + 8. * pow(s, 2)) +
2007 pow(delta, 2) * pow(m_rho, 4) *
2008 (-4. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) -
2009 2. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
2010 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 8. * s))) *
2011 log(abs(-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmax))) /
2015 pow(
pion_mass, 2) * (4. * pow(m_rho, 6) - 8. * C4 * pow(m_rho, 8)) -
2016 4. * pow(m_rho, 6) * s + 8. * C4 * pow(m_rho, 8) * s +
2017 pow(delta, 2) * pow(m_rho, 4) *
2018 (2. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
2019 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) +
2021 delta * pow(m_rho, 4) *
2022 (-4. * pow(
pion_mass, 4) + 2. * pow(m_rho, 2) * s -
2025 (-10. * pow(m_rho, 2) + 4. * C4 * pow(m_rho, 4) + 8. * s) +
2026 pow(m_rho, 4) * (2. - 4. * C4 * s))) *
2027 log(abs(-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmax))) /
2030 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
2031 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
2032 (pow(
Const, 2) * pow(ghat, 4) *
2034 (0.25 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
2035 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
2036 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
2038 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - s, 2)) -
2040 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 4) - 12. * pow(m_rho, 6) +
2041 4. * pow(m_rho, 4) * s +
2042 delta * pow(m_rho, 2) *
2044 16. * pow(
pion_mass, 2) * pow(m_rho, 2) - 4. * pow(m_rho, 4) +
2045 16. * pow(m_rho, 2) * s + 4. * pow(s, 2)) +
2047 (8. * pow(
pion_mass, 6) + 9. * pow(m_rho, 6) +
2048 pow(
pion_mass, 4) * (4. * pow(m_rho, 2) - 4. * s) -
2049 13. * pow(m_rho, 4) * s - 5. * pow(m_rho, 2) * pow(s, 2) +
2051 pow(
pion_mass, 2) * (-2. * pow(m_rho, 4) +
2052 4. * pow(m_rho, 2) * s - 2. * pow(s, 2)))) *
2055 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
2056 (pow(a1_mass, 2) - 1. * s) *
2058 (pow(m_rho, 2) - 1. * s) * pow(s, 2) +
2059 pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 3. * s)) +
2061 pow(
pion_mass, 4) * (3. * pow(m_rho, 2) + s) +
2062 pow(
pion_mass, 2) * (-1. * pow(m_rho, 4) + pow(m_rho, 2) * s -
2064 s * (pow(m_rho, 4) - 2. * pow(m_rho, 2) * s + pow(s, 2)))) *
2067 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2068 2. * pow(a1_mass, 2) * s + pow(s, 2))) +
2069 (0.03125 * pow(eta1 - 1. * eta2, 2) *
2073 (-4. * pow(m_rho, 4) + 8. * pow(m_rho, 2) * s -
2075 pow(s, 2) * (1. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s +
2077 pow(
pion_mass, 4) * (3. * pow(m_rho, 4) -
2078 6. * pow(m_rho, 2) * s + 4. * pow(s, 2))) +
2082 (-2. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s -
2084 pow(s, 2) * (1. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s +
2086 pow(
pion_mass, 4) * (1. * pow(m_rho, 4) +
2087 4. * pow(m_rho, 2) * s + 4. * pow(s, 2))) +
2089 (-2. * pow(
pion_mass, 8) + 2. * pow(m_rho, 4) * pow(s, 2) -
2091 pow(
pion_mass, 4) * (2. * pow(m_rho, 4) +
2092 4. * pow(m_rho, 2) * s - 8. * pow(s, 2)) +
2094 (-4. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
2097 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2098 2. * pow(a1_mass, 2) * s + pow(s, 2)) +
2100 (0. - 4. * C4 * pow(m_rho, 8) - 0.5 * pow(m_rho, 4) * s +
2101 pow(m_rho, 6) * (2. + 2. * C4 * s) +
2103 (2. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) -
2104 1.5 * pow(
pion_mass, 4) * s - 2.375 * pow(m_rho, 4) * s -
2105 0.75 * pow(m_rho, 2) * pow(s, 2) + 0.125 * pow(s, 3) +
2107 (-1.5 * pow(m_rho, 4) + 0.5 * pow(m_rho, 2) * s)) +
2108 delta * pow(m_rho, 2) *
2111 (1. * s + pow(m_rho, 2) * (-1. - 2. * C4 * s)) +
2112 pow(m_rho, 2) * (2. * C4 * pow(m_rho, 4) +
2113 pow(m_rho, 2) * (-3. + 1. * C4 * s) +
2114 s * (2. + 1. * C4 * s)))) *
2119 (-1.5 + C4 * (-12. * pow(
pion_mass, 2) + 6. * s) +
2120 pow(C4, 2) * (-16. * pow(
pion_mass, 4) +
2121 16. * pow(
pion_mass, 2) * s - 4. * pow(s, 2))) +
2123 (1. * pow(
pion_mass, 6) + 0.125 * pow(m_rho, 6) +
2124 pow(
pion_mass, 4) * (-2. * pow(m_rho, 2) - 1. * s) +
2125 0.25 * pow(m_rho, 4) * s - 0.625 * pow(m_rho, 2) * pow(s, 2) +
2127 (-2.5 * pow(m_rho, 4) + 1.75 * pow(m_rho, 2) * s +
2128 0.25 * pow(s, 2))) +
2129 delta * pow(m_rho, 2) *
2130 (pow(
pion_mass, 4) * (1. + 8. * C4 * pow(m_rho, 2)) +
2131 pow(
pion_mass, 2) * (6. * C4 * pow(m_rho, 4) - 0.5 * s +
2132 pow(m_rho, 2) * (3. - 10. * C4 * s)) +
2133 pow(m_rho, 2) * (pow(m_rho, 2) * (1.5 - 1. * C4 * s) +
2134 s * (-2.5 + 3. * C4 * s)))) *
2139 (1. * pow(
pion_mass, 6) - 1. * pow(m_rho, 6) +
2141 (-2.499999999999999 * pow(m_rho, 2) - 2.5 * s) -
2142 1.5 * pow(m_rho, 4) * s + 2. * pow(m_rho, 2) * pow(s, 2) -
2145 (3.5 * pow(m_rho, 4) -
2146 1.5000000000000004 * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
2148 (pow(
pion_mass, 4) * (-6. - 8. * C4 * pow(m_rho, 2)) +
2149 2. * pow(s, 2) + pow(m_rho, 4) * (-4. - 8. * C4 * s) +
2150 pow(m_rho, 2) * s * (-2. + 8. * C4 * s) +
2151 pow(
pion_mass, 2) * (8. * C4 * pow(m_rho, 4) + 4. * s +
2152 pow(m_rho, 2) * (10. - 16. * C4 * s))) +
2154 (-2. * pow(
pion_mass, 6) - 5. * pow(m_rho, 2) * pow(s, 2) +
2157 (8. * pow(m_rho, 2) + 4. * C4 * pow(m_rho, 4) + 5. * s) +
2158 pow(m_rho, 4) * s * (4. - 4. * C4 * s) +
2159 pow(m_rho, 6) * (4. + 4. * C4 * s) +
2161 (-4. * C4 * pow(m_rho, 6) + 1. * pow(m_rho, 2) * s -
2162 4. * pow(s, 2) + pow(m_rho, 4) * (-12. + 8. * C4 * s)))) *
2164 (pow(m_rho, 4) * (pow(
pion_mass, 2) - 1. * s)) +
2165 (0.0625 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
2168 s * (8. * pow(m_rho, 2) + 6. * s)) +
2169 eta1 * (-12. * pow(
pion_mass, 4) + 4. * pow(m_rho, 4) +
2170 2. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
2171 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s))) +
2174 (8. * pow(
pion_mass, 6) - 2. * pow(m_rho, 6) +
2175 pow(
pion_mass, 4) * (2. * pow(m_rho, 2) - 2. * s) -
2176 3. * pow(m_rho, 4) * s + 4. * pow(m_rho, 2) * pow(s, 2) +
2178 pow(
pion_mass, 2) * (2. * pow(m_rho, 4) - 2. * pow(s, 2))) +
2179 eta2 * (pow(
pion_mass, 4) * (-2. * pow(m_rho, 2) - 4. * s) +
2180 pow(
pion_mass, 2) * s * (3. * pow(m_rho, 2) + 3. * s) +
2181 s * (-4. * pow(m_rho, 4) - 7. * pow(m_rho, 2) * s -
2182 1. * pow(s, 2))))) *
2185 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2186 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
2187 (0.1875 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
2188 (delta * (eta1 * (2.6666666666666665 * pow(
pion_mass, 6) +
2189 pow(
pion_mass, 4) * (-4. * pow(m_rho, 2) + 2. * s) +
2191 (-1.3333333333333333 * pow(m_rho, 4) +
2192 6. * pow(m_rho, 2) * s -
2193 3.3333333333333335 * pow(s, 2)) +
2194 s * (0.3333333333333333 * pow(m_rho, 4) -
2195 1.3333333333333333 * pow(m_rho, 2) * s +
2198 (-0.6666666666666666 * pow(m_rho, 2) - 4. * s) +
2199 s * (0.6666666666666666 * pow(m_rho, 4) -
2200 1. * pow(m_rho, 2) * s - 1. * pow(s, 2)) +
2202 (-0.6666666666666666 * pow(m_rho, 4) -
2203 0.3333333333333333 * pow(m_rho, 2) * s +
2204 3.6666666666666665 * pow(s, 2)))) +
2207 (2.6666666666666665 * pow(m_rho, 2) +
2208 10.666666666666666 * s) +
2210 (s * (3.3333333333333335 -
2211 10.666666666666666 * C4 * s) +
2212 pow(m_rho, 2) * (1.3333333333333333 -
2213 5.333333333333333 * C4 * s)) +
2214 s * (s * (-2. + 2.6666666666666665 * C4 * s) +
2215 pow(m_rho, 2) * (-1.3333333333333333 +
2216 2.6666666666666665 * C4 * s))) +
2219 (1.3333333333333333 + 8. * C4 * pow(m_rho, 2) -
2220 10.666666666666666 * C4 * s) +
2221 s * (s * (2. - 2.6666666666666665 * C4 * s) +
2222 pow(m_rho, 2) * (-2. + 2.6666666666666665 * C4 * s)) +
2224 (pow(m_rho, 2) * (2.6666666666666665 -
2225 10.666666666666666 * C4 * s) +
2226 s * (-4. + 10.666666666666666 * C4 * s))))) *
2229 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2230 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
2231 (0.0625 * (-2. + delta) * (eta1 - 1. * eta2) *
2232 (pow(a1_mass, 2) - 1. * s) * (pow(
pion_mass, 2) + s) *
2234 eta1 * (pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s)) *
2237 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2238 2. * pow(a1_mass, 2) * s + pow(s, 2))) +
2239 (0.03125 * pow(eta1 - 1. * eta2, 2) *
2240 (pow(eta1, 2) * (pow(m_rho, 2) - 1. * s) + 2. * eta1 * eta2 * s -
2241 1. * pow(eta2, 2) * s) *
2242 (pow(
pion_mass, 4) + (pow(m_rho, 2) - 1. * s) * s +
2243 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 2. * s)) *
2245 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2246 2. * pow(a1_mass, 2) * s + pow(s, 2)) -
2248 (-1. * pow(m_rho, 4) + 4. * C4 * pow(m_rho, 6) +
2249 delta * pow(m_rho, 2) *
2250 (2. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
2251 pow(
pion_mass, 2) * (2. - 4. * C4 * pow(m_rho, 2)) - 2. * s) +
2253 (1. * pow(
pion_mass, 4) + 0.25 * pow(m_rho, 4) -
2255 pow(
pion_mass, 2) * (-3. * pow(m_rho, 2) + 2. * s))) *
2259 (0. - 4. * pow(m_rho, 4) +
2260 delta * (16. * pow(m_rho, 4) - 8. * pow(m_rho, 2) * s) +
2262 (4. * pow(
pion_mass, 4) - 3. * pow(m_rho, 4) +
2263 2. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
2264 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s))) *
2268 (-32. * C4 * pow(m_rho, 4) * s +
2269 pow(delta, 2) * (1. * pow(
pion_mass, 4) +
2271 (-1.0000000000000009 * pow(m_rho, 2) - 2. * s) +
2272 s * (-3. * pow(m_rho, 2) + 1. * s)) +
2275 (6. * pow(m_rho, 2) + 16. * C4 * pow(m_rho, 4) - 2. * s) * s +
2276 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) + 4. * s))) *
2278 (pow(m_rho, 4) * (pow(
pion_mass, 2) - 1. * s)) -
2280 (C4 * pow(m_rho, 6) *
2281 (2.6666666666666665 + 7.111111111111112 * C4 * pow(
pion_mass, 2) -
2282 3.555555555555556 * C4 * s) +
2283 pow(delta, 2) * (0.11111111111111112 * pow(m_rho, 4) +
2285 (1. * pow(m_rho, 2) - 0.22222222222222224 * s) -
2286 0.22222222222222224 * pow(m_rho, 2) * s +
2287 0.11111111111111112 * pow(s, 2)) +
2288 delta * pow(m_rho, 2) *
2289 (-2.2222222222222223 * C4 * pow(m_rho, 4) +
2290 pow(
pion_mass, 2) * (-0.6666666666666666 -
2291 2.6666666666666665 * C4 * pow(m_rho, 2)) +
2292 0.22222222222222224 * s +
2294 (-0.22222222222222224 + 1.777777777777778 * C4 * s))) *
2297 (0.03125 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
2298 (pow(m_rho, 2) * (-2. * eta2 * pow(
pion_mass, 2) -
2299 5.999999999999999 * eta1 * pow(m_rho, 2) +
2300 8. * eta1 * s - 2. * eta2 * s) +
2302 (eta1 * (-5.999999999999999 * pow(
pion_mass, 4) +
2303 5. * pow(m_rho, 4) +
2304 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
2305 5.999999999999999 * pow(m_rho, 2) * s + 1. * pow(s, 2)) +
2307 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 2. * s) +
2308 s * (5. * pow(m_rho, 2) + 2. * s)))) *
2311 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2312 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
2313 (0.15625 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
2315 (eta1 * (-1.2 * pow(
pion_mass, 4) + 0.6 * pow(m_rho, 4) +
2316 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 2.4 * s) -
2317 1.6 * pow(m_rho, 2) * s + 1. * pow(s, 2)) +
2319 (1. * pow(m_rho, 2) - 0.4 * s) * s +
2320 pow(
pion_mass, 2) * (0.2 * pow(m_rho, 2) + 1.2 * s))) +
2322 (eta2 * (pow(
pion_mass, 2) * (-0.4 - 6.4 * C4 * s) +
2323 s * (-0.4 + 3.2 * C4 * s)) +
2324 eta1 * (s * (0.8 - 3.2 * C4 * s) +
2325 pow(m_rho, 2) * (-0.4 + 3.2 * C4 * s) +
2327 (-0.8 - 3.2 * C4 * pow(m_rho, 2) + 6.4 * C4 * s)))) *
2330 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2331 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
2332 (0.20833333333333331 * delta *
2333 (-0.8 * pow(m_rho, 2) + 0.8 * C4 * pow(m_rho, 4) +
2334 delta * (0.8 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.7 * s)) *
2338 (5.333333333333333 * pow(C4, 2) * pow(m_rho, 6) +
2339 delta * (-0.6666666666666666 * pow(m_rho, 2) -
2340 1.3333333333333333 * C4 * pow(m_rho, 4)) +
2342 (1. * pow(
pion_mass, 2) + 1.1666666666666667 * pow(m_rho, 2) -
2343 0.6666666666666666 * s)) *
2346 (0.10416666666666666 * delta *
2347 (-0.8 * pow(m_rho, 2) +
2348 delta * (0.4 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.6 * s)) *
2351 (0.020833333333333332 * pow(eta1 - 1. * eta2, 2) * s *
2352 (-2. * eta1 * eta2 * s + pow(eta2, 2) * s +
2353 pow(eta1, 2) * (-1. * pow(m_rho, 2) + s)) *
2355 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2356 2. * pow(a1_mass, 2) * s + pow(s, 2)) +
2357 (0.10416666666666666 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
2358 (0.4 * eta1 * pow(m_rho, 2) +
2359 delta * (-0.2 * eta2 * pow(
pion_mass, 2) - 0.2 * eta2 * s +
2360 eta1 * (-0.4 * pow(
pion_mass, 2) - 0.8 * pow(m_rho, 2) +
2364 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2365 2. * pow(a1_mass, 2) * s + pow(s, 2))) -
2366 (0.14583333333333331 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
2367 (delta * (-0.14285714285714285 * eta2 * pow(
pion_mass, 2) -
2368 0.42857142857142855 * eta2 * s +
2369 eta1 * (-0.2857142857142857 * pow(
pion_mass, 2) -
2370 0.5714285714285714 * pow(m_rho, 2) + 1. * s)) +
2372 (1.1428571428571428 * C4 * eta2 * s +
2373 eta1 * (0.2857142857142857 - 1.1428571428571428 * C4 * s))) *
2376 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2377 2. * pow(a1_mass, 2) * s + pow(s, 2))) +
2379 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
2381 0.25 * pow(2. - 1. * delta, 2) * pow(m_rho, 10) -
2382 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(m_rho, 6) *
2384 pow(2. - 1. * delta, 2) * pow(
pion_mass, 2) * pow(m_rho, 6) *
2385 (-1. * pow(m_rho, 2) + 1. * s)) /
2386 (pow(m_rho, 6) * (-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmin)) +
2388 (0. - 2. * pow(
pion_mass, 4) * pow(m_rho, 4) - 0.5 * pow(m_rho, 8) +
2389 delta * pow(m_rho, 4) *
2390 (2. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 4) +
2392 (-2. * pow(m_rho, 2) - 1.9999999999999998 * s)) +
2393 pow(
pion_mass, 2) * (2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s) +
2394 pow(delta, 2) * pow(m_rho, 2) *
2395 (-2.220446049250313e-16 * pow(
pion_mass, 6) -
2396 0.125 * pow(m_rho, 6) +
2398 (-0.5 * pow(m_rho, 2) + 2.220446049250313e-16 * s) +
2400 (0.5 * pow(m_rho, 4) + 0.5 * pow(m_rho, 2) * s))) *
2401 log(abs(-1. * pow(
pion_mass, 2) + 0.5 * s + 0.5 * tmin))) /
2402 (pow(m_rho, 4) * (pow(
pion_mass, 2) - 1. * s)) -
2403 (0.25 * (eta1 - 1. * eta2) * (pow(a1_mass, 2) - 1. * s) *
2404 (eta2 * ((-2. + 1. * delta) * pow(
pion_mass, 6) +
2405 (6. - 3. * delta) * pow(
pion_mass, 4) * s +
2406 pow(s, 2) * ((4. - 2. * delta) * pow(m_rho, 2) +
2407 (2. - 1. * delta) * s) +
2409 ((-4. + 2. * delta) * pow(m_rho, 2) +
2410 (-6. + 3. * delta) * s)) +
2411 eta1 * ((2. - 1. * delta) * pow(
pion_mass, 6) +
2412 (2. - 1. * delta) * pow(m_rho, 4) * s +
2413 (-2. + 1. * delta) * pow(s, 3) +
2414 pow(
pion_mass, 4) * ((4. - 2. * delta) * pow(m_rho, 2) +
2415 (-6. + 3. * delta) * s) +
2416 pow(
pion_mass, 2) * ((-2. + 1. * delta) * pow(m_rho, 4) +
2417 (-4. + 2. * delta) * pow(m_rho, 2) * s +
2418 (6. - 3. * delta) * pow(s, 2)))) *
2419 log(abs(-2. * pow(
pion_mass, 2) + s + tmin))) /
2420 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
2421 2. * pow(a1_mass, 2) * s + pow(s, 2)) +
2423 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 6) + 4. * pow(m_rho, 8) -
2424 8. * pow(m_rho, 6) * s +
2425 delta * pow(m_rho, 4) *
2426 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) +
2427 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 16. * s) +
2428 8. * pow(m_rho, 2) * s + 8. * pow(s, 2)) +
2429 pow(delta, 2) * pow(m_rho, 4) *
2430 (-4. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) -
2431 2. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
2432 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 8. * s))) *
2433 log(abs(-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmin))) /
2437 pow(
pion_mass, 2) * (4. * pow(m_rho, 6) - 8. * C4 * pow(m_rho, 8)) -
2438 4. * pow(m_rho, 6) * s + 8. * C4 * pow(m_rho, 8) * s +
2439 pow(delta, 2) * pow(m_rho, 4) *
2440 (2. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
2441 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) +
2443 delta * pow(m_rho, 4) *
2444 (-4. * pow(
pion_mass, 4) + 2. * pow(m_rho, 2) * s -
2447 (-10. * pow(m_rho, 2) + 4. * C4 * pow(m_rho, 4) + 8. * s) +
2448 pow(m_rho, 4) * (2. - 4. * C4 * s))) *
2449 log(abs(-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmin))) /
2452 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
2453 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)));
2461 const double m_rho) {
2462 const double spin_deg_factor = 3.0;
2467 const double diff_xs =
2468 (pow(
Const, 2) * pow(ghat, 4) *
2469 ((-0.25 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
2470 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
2471 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) /
2472 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - s, 2)) -
2473 (0.0625 * (eta1 - eta2) * (-pow(a1_mass, 2) + s) *
2474 (2 * pow(m_rho, 2) +
2475 delta * (-2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s + t)) *
2477 (4 * pow(
pion_mass, 4) + s * (4 * pow(m_rho, 2) + s - t) -
2480 (8 * pow(
pion_mass, 6) + pow(s, 3) + pow(s, 2) * t +
2481 5 * s * pow(t, 2) + pow(t, 3) + 2 * pow(m_rho, 4) * (-s + t) +
2482 pow(m_rho, 2) * (s - 3 * t) * (s + t) +
2483 2 * pow(
pion_mass, 2) * (2 * pow(m_rho, 2) - s - t) * (s + t) -
2484 2 * pow(
pion_mass, 4) * (2 * pow(m_rho, 2) + s + 3 * t)))) /
2486 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
2489 pow(-2. * pow(m_rho, 2) + delta * (2. * pow(
pion_mass, 2) +
2490 pow(m_rho, 2) - 1. * s - 1. * t),
2492 (8. * pow(
pion_mass, 6) + 4. * pow(m_rho, 6) + pow(s, 3) +
2493 pow(m_rho, 4) * (-4. * s - 4. * t) +
2494 pow(
pion_mass, 4) * (-4. * pow(m_rho, 2) - 4. * s - 4. * t) +
2495 3. * pow(s, 2) * t + 3. * s * pow(t, 2) + pow(t, 3) +
2496 pow(m_rho, 2) * (-3. * pow(s, 2) + 2. * s * t - 3. * pow(t, 2)) +
2498 (-8. * pow(m_rho, 4) - 2. * pow(s, 2) - 4. * s * t -
2499 2. * pow(t, 2) + pow(m_rho, 2) * (4. * s + 4. * t)))) /
2500 (pow(m_rho, 6) * pow(2. * pow(
pion_mass, 2) - 1. * s - 1. * t, 2)) +
2501 (0.125 * (-2 + delta) * (eta1 - eta2) * (-pow(a1_mass, 2) + s) *
2504 s * (-pow(m_rho, 2) + s + 2 * t))) +
2506 s * (-pow(m_rho, 2) + s) * (-pow(m_rho, 2) + s + t) +
2507 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s + t) -
2508 pow(
pion_mass, 2) * (pow(m_rho, 4) + 2 * s * (s - t) +
2509 pow(m_rho, 2) * (-s + t))))) /
2510 ((pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) *
2512 (0.03125 * pow(eta1 - eta2, 2) *
2515 pow(
pion_mass, 4) * (pow(pow(m_rho, 2) + 2 * s, 2) - 2 * s * t) +
2516 pow(s, 2) * (pow(pow(m_rho, 2) + s, 2) +
2517 2 * (-pow(m_rho, 2) + s) * t + 2 * pow(t, 2)) -
2519 (pow(m_rho, 4) + pow(m_rho, 2) * (2 * s - t) +
2523 pow(
pion_mass, 4) * (pow(m_rho, 4) + 2 * pow(m_rho, 2) * s +
2524 2 * s * (-2 * s + t)) +
2526 (pow(m_rho, 4) + pow(m_rho, 2) * (s + t) - 2 * s * (s + t)) +
2527 pow(s, 2) * (-pow(m_rho, 4) + pow(s, 2) - 2 * pow(m_rho, 2) * t +
2531 pow(
pion_mass, 4) * (3 * pow(m_rho, 4) + 2 * s * (2 * s - t) +
2532 2 * pow(m_rho, 2) * (-3 * s + t)) -
2533 2 * pow(
pion_mass, 2) * (-pow(m_rho, 2) + s) *
2534 (2 * s * (s + t) - pow(m_rho, 2) * (2 * s + t)) +
2535 s * (-pow(m_rho, 2) + s) *
2536 (pow(s, 2) + 2 * s * t + 2 * pow(t, 2) -
2537 pow(m_rho, 2) * (s + 2 * t))))) /
2538 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(pow(a1_mass, 2) - s, 2)) +
2540 (-2. * pow(m_rho, 2) +
2541 delta * (2. * pow(
pion_mass, 2) + pow(m_rho, 2) - 1. * s - 1. * t)) *
2543 (1. * pow(
pion_mass, 6) + 0.5 * pow(m_rho, 6) +
2544 0.0625 * pow(s, 3) + pow(m_rho, 4) * (-0.5 * s - 0.5 * t) +
2546 (-0.5 * pow(m_rho, 2) - 0.75 * s - 0.25 * t) +
2547 0.3125 * pow(s, 2) * t + 0.4375 * s * pow(t, 2) +
2548 0.1875 * pow(t, 3) +
2549 pow(
pion_mass, 2) * (-1. * pow(m_rho, 4) +
2550 pow(m_rho, 2) * (0.375 * s + 0.625 * t) +
2551 (-0.5 * s - 0.5 * t) * t) +
2553 (-0.3125 * pow(s, 2) + 0.25 * s * t - 0.4375 * pow(t, 2))) +
2555 (-0.125 * pow(s, 2) + C4 * pow(m_rho, 4) * (1. * s - 1. * t) +
2557 pow(
pion_mass, 2) * ((0.25 - 1. * C4 * pow(m_rho, 2)) * s +
2558 (-0.25 + 1. * C4 * pow(m_rho, 2)) * t) +
2559 pow(m_rho, 2) * (-0.5 * s + 0.5 * C4 * pow(s, 2) +
2560 t * (0.5 - 0.5 * C4 * t))))) /
2561 (pow(m_rho, 6) * (1. * pow(
pion_mass, 2) - 0.5 * s - 0.5 * t)) +
2563 (-0.5 * pow(
pion_mass, 6) - 0.0625 * pow(m_rho, 6) +
2564 pow(
pion_mass, 4) * (1. * pow(m_rho, 2) + 0.5 * s) +
2565 pow(m_rho, 4) * (-0.125 * s - 0.125 * t) +
2566 t * (-0.125 * pow(s, 2) - 0.25 * s * t - 0.125 * pow(t, 2)) +
2567 pow(
pion_mass, 2) * (1.25 * pow(m_rho, 4) - 0.125 * pow(s, 2) +
2568 pow(m_rho, 2) * (-0.875 * s - 1.125 * t) +
2569 0.25 * s * t + 0.375 * pow(t, 2)) +
2571 (0.3125 * pow(s, 2) + 0.25 * s * t + 0.4375 * pow(t, 2))) +
2572 delta * pow(m_rho, 2) *
2573 (pow(
pion_mass, 4) * (-0.5 - 4. * C4 * pow(m_rho, 2)) +
2574 (-0.25 * s - 0.25 * t) * t +
2575 pow(m_rho, 4) * (-0.75 + 0.5 * C4 * s + 2.5 * C4 * t) +
2577 (-1.5 * C4 * pow(s, 2) + s * (1.25 - 2. * C4 * t) +
2578 t * (0.25 - 0.5 * C4 * t)) +
2580 (-3. * C4 * pow(m_rho, 4) + 0.25 * s + 0.75 * t +
2581 pow(m_rho, 2) * (-1.5 + 5. * C4 * s + 3. * C4 * t))) +
2584 C4 * (8. * C4 * pow(
pion_mass, 4) + 2. * C4 * pow(s, 2) +
2585 pow(
pion_mass, 2) * (6. - 8. * C4 * s - 8. * C4 * t) +
2586 t * (-3. + 2. * C4 * t) + s * (-3. + 4. * C4 * t)))) /
2588 (0.0625 * (eta1 - eta2) * (-pow(a1_mass, 2) + s) *
2591 (-4 * C4 * pow(m_rho, 2) * (pow(m_rho, 2) + 4 * s) +
2592 delta * (pow(m_rho, 2) + 6 * s - 2 * t)) +
2594 (2 * pow(m_rho, 4) * (-2 + delta + 8 * C4 * s) +
2595 delta * (-11 * pow(s, 2) - 6 * s * t + pow(t, 2)) +
2596 pow(m_rho, 2) * ((-10 + delta) * s - (-2 + delta) * t +
2597 32 * C4 * s * (s + t))) +
2598 s * (-2 * pow(m_rho, 4) * (-2 + delta + 4 * C4 * s) +
2599 delta * (3 * pow(s, 2) + 2 * s * t + 3 * pow(t, 2)) +
2600 pow(m_rho, 2) * (3 * (2 + delta) * s + (2 - 5 * delta) * t -
2601 8 * C4 * pow(s + t, 2))))) +
2605 (12 * C4 * pow(m_rho, 4) -
2606 2 * pow(m_rho, 2) * (-1 + 3 * delta + 8 * C4 * s) +
2607 3 * delta * (s - t)) +
2608 delta * (3 * pow(s, 3) + 5 * pow(s, 2) * t + 7 * s * pow(t, 2) +
2611 ((-3 + 2 * delta) * pow(s, 2) +
2612 2 * (-1 + 2 * delta) * s * t +
2613 (-1 + 2 * delta) * pow(t, 2) + 4 * C4 * s * pow(s + t, 2)) +
2614 pow(m_rho, 4) * ((-6 + delta) * s + (-2 + 3 * delta) * t +
2615 8 * C4 * s * (s + 2 * t)) -
2617 (delta * (s + t) * (5 * s + t) -
2618 pow(m_rho, 2) * (-6 * s + 9 * delta * s - 2 * t +
2619 5 * delta * t + 16 * C4 * s * (s + t)) +
2621 (-2 + delta + 4 * C4 * (2 * s + t)))))) /
2622 (pow(m_rho, 2) * (pow(Gammaa1, 2) * pow(a1_mass, 2) +
2623 pow(pow(a1_mass, 2) - s, 2))) +
2625 ((0.0625 * (-2. + delta) *
2626 (-2. * pow(m_rho, 2) + delta * (2. * pow(
pion_mass, 2) +
2627 pow(m_rho, 2) - 1. * s - 1. * t)) *
2628 (2. * pow(
pion_mass, 6) + 1. * pow(m_rho, 6) +
2629 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) - 2. * s) +
2630 pow(m_rho, 4) * (-1.5 * s - 1.5 * t) +
2631 pow(m_rho, 2) * (0.5 * s + 0.5 * t) * t +
2632 s * (0.5 * pow(s, 2) + 1. * s * t + 0.5 * pow(t, 2)) +
2634 (-1. * pow(m_rho, 4) - 0.5 * pow(s, 2) - 1. * s * t -
2635 0.5 * pow(t, 2) + pow(m_rho, 2) * (-0.5 * s + 2.5 * t)))) /
2637 (1. * pow(
pion_mass, 2) - 0.5 * s - 0.5 * t)) +
2638 (0.0625 * (-2 + delta) *
2640 pow(
pion_mass, 4) * (9 * (pow(m_rho, 2) + s) + t) -
2642 (2 * pow(m_rho, 4) - 3 * pow(s, 2) +
2643 pow(m_rho, 2) * (5 * s - 7 * t) + pow(t, 2)) +
2644 (pow(m_rho, 2) - s - t) * (3 * pow(m_rho, 4) - s * t -
2645 pow(m_rho, 2) * (3 * s + t))) +
2647 (pow(
pion_mass, 4) * (1 + 4 * C4 * pow(m_rho, 2)) +
2648 pow(m_rho, 4) * (-1 + 4 * C4 * s) + s * t -
2650 (4 * C4 * pow(m_rho, 4) + s -
2651 2 * pow(m_rho, 2) * (1 + 4 * C4 * s) + t) +
2652 pow(m_rho, 2) * (t + s * (1 - 4 * C4 * (s + 2 * t)))))) /
2656 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
2657 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)));
2666 const double s,
const double m_rho) {
2674 const double &tmax = t_mandelstam[0];
2675 const double &tmin = t_mandelstam[1];
2676 const double spin_deg_factor = 3.0;
2680 (pow(
Const, 2) * pow(ghat, 4) *
2682 (0.03125 * pow(eta1 - 1. * eta2, 2) *
2684 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
2685 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
2686 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
2688 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
2690 (-2. * pow(m_rho, 4) +
2691 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 2. * s) +
2692 2. * pow(m_rho, 2) * s) +
2694 (4. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
2695 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) - 4. * s) -
2696 2. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
2698 (-2. * pow(a1_mass, 8) - 2. * pow(
pion_mass, 8) +
2699 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
2700 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
2702 (-4. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
2703 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) + 4. * s)) +
2705 (-8. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
2706 4. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
2707 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s))) +
2709 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
2710 2. * pow(
pion_mass, 6) * pow(m_rho, 2) -
2711 2. * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
2713 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
2715 (3. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s) +
2717 (4. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
2718 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 4. * s) -
2719 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
2721 (pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) - 2. * s) +
2722 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
2724 (-4. * pow(m_rho, 4) + 6. * pow(m_rho, 2) * s))))) /
2725 (1. * pow(a1_mass, 2) - 1. * tmax) +
2726 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
2727 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
2729 (0.25 * pow(-2. + delta, 2) * pow(
pion_mass, 2) * tmax) /
2731 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
2732 (eta2 * (-1. * pow(a1_mass, 2) + pow(m_rho, 2) - 2. * s) +
2733 eta1 * (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
2734 2. * pow(m_rho, 2) + s)) *
2736 0.03125 * pow(eta1 - 1. * eta2, 2) *
2737 (pow(eta1, 2) * (3. * pow(a1_mass, 4) + 4. * pow(
pion_mass, 4) +
2739 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 4. * s) -
2740 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
2741 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) -
2742 4. * pow(m_rho, 2) + 4. * s)) +
2744 (3. * pow(a1_mass, 4) + 4. * pow(
pion_mass, 4) +
2746 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) - 4. * s) -
2747 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
2749 (-8. * pow(
pion_mass, 2) + 4. * pow(m_rho, 2) + 4. * s)) +
2751 (-6. * pow(a1_mass, 4) - 8. * pow(
pion_mass, 4) +
2752 2. * pow(m_rho, 4) +
2753 pow(a1_mass, 2) * (16. * pow(
pion_mass, 2) - 8. * s) +
2754 4. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
2755 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s))) *
2758 (0. - 0.25 * pow(m_rho, 4) - 1. * C4 * pow(m_rho, 6) +
2759 pow(
pion_mass, 2) * (0.75 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
2760 2. * C4 * pow(m_rho, 4) * s +
2762 (-0.125 * pow(
pion_mass, 4) - 0.1875 * pow(m_rho, 4) +
2763 pow(
pion_mass, 2) * (0.0625 * pow(m_rho, 2) + 0.0625 * s) +
2764 0.1875 * pow(m_rho, 2) * s) +
2765 delta * (0.25 * pow(
pion_mass, 4) + 0.5 * C4 * pow(m_rho, 6) +
2766 pow(
pion_mass, 2) * (-0.5 * pow(m_rho, 2) +
2767 0.5 * C4 * pow(m_rho, 4) - 0.125 * s) -
2768 0.375 * pow(m_rho, 2) * s +
2769 pow(m_rho, 4) * (0.5 - 1. * C4 * s))) *
2773 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 4) - 12. * pow(m_rho, 6) +
2774 4. * pow(m_rho, 4) * s +
2775 delta * pow(m_rho, 2) *
2777 16. * pow(
pion_mass, 2) * pow(m_rho, 2) - 4. * pow(m_rho, 4) +
2778 16. * pow(m_rho, 2) * s + 4. * pow(s, 2)) +
2780 (8. * pow(
pion_mass, 6) + 9. * pow(m_rho, 6) +
2781 pow(
pion_mass, 4) * (4. * pow(m_rho, 2) - 4. * s) -
2782 13. * pow(m_rho, 4) * s - 5. * pow(m_rho, 2) * pow(s, 2) +
2784 pow(
pion_mass, 2) * (-2. * pow(m_rho, 4) +
2785 4. * pow(m_rho, 2) * s - 2. * pow(s, 2)))) *
2788 (0.0625 * (1. * eta1 - 1. * eta2) *
2790 (eta1 * (2. * pow(a1_mass, 2) + 2. * pow(m_rho, 2)) +
2791 eta2 * (-2. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
2792 8. * pow(m_rho, 2) + 6. * s)) +
2794 (eta1 * (1. * pow(a1_mass, 4) - 2. * pow(
pion_mass, 4) -
2795 3. * pow(m_rho, 4) +
2796 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
2797 2. * pow(m_rho, 2) * s + 5.000000000000001 * pow(s, 2) +
2798 pow(a1_mass, 2) * (-2. * pow(
pion_mass, 2) + 1. * s)) +
2799 eta2 * (-1. * pow(a1_mass, 4) - 4. * pow(
pion_mass, 4) +
2800 4. * pow(m_rho, 4) +
2801 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) - 2. * s) +
2802 1. * pow(m_rho, 2) * s - 1. * pow(s, 2) +
2803 pow(a1_mass, 2) * (3. * pow(
pion_mass, 2) -
2804 3. * pow(m_rho, 2) + 2. * s)))) *
2809 (-1.5 + C4 * (-12. * pow(
pion_mass, 2) + 6. * s) +
2810 pow(C4, 2) * (-16. * pow(
pion_mass, 4) +
2811 16. * pow(
pion_mass, 2) * s - 4. * pow(s, 2))) +
2814 0.125 * pow(m_rho, 6) + 0.25 * pow(m_rho, 4) * s -
2815 0.875 * pow(m_rho, 2) * pow(s, 2) + 0.25 * pow(s, 3) +
2817 (-2.5 * pow(m_rho, 4) + 2.25 * pow(m_rho, 2) * s -
2818 0.75 * pow(s, 2))) +
2819 delta * pow(m_rho, 2) *
2820 (pow(
pion_mass, 4) * (1. + 8. * C4 * pow(m_rho, 2)) +
2821 0.5 * pow(s, 2) + pow(m_rho, 4) * (1.5 - 5. * C4 * s) +
2822 pow(m_rho, 2) * s * (-0.5 + 1. * C4 * s) +
2823 pow(
pion_mass, 2) * (6. * C4 * pow(m_rho, 4) - 1.5 * s +
2824 pow(m_rho, 2) * (3. - 6. * C4 * s)))) *
2828 (0. - 4. * C4 * pow(m_rho, 8) - 0.5 * pow(m_rho, 4) * s +
2829 pow(m_rho, 6) * (2. + 2. * C4 * s) +
2831 (-2. * pow(
pion_mass, 6) - 2. * pow(m_rho, 6) +
2832 0.5 * pow(
pion_mass, 4) * s + 2.125 * pow(m_rho, 4) * s +
2833 1.25 * pow(m_rho, 2) * pow(s, 2) - 0.375 * pow(s, 3) +
2834 pow(
pion_mass, 2) * (1.5 * pow(m_rho, 4) -
2835 1.5 * pow(m_rho, 2) * s + 1. * pow(s, 2))) +
2836 delta * pow(m_rho, 2) *
2837 (2. * pow(
pion_mass, 4) + 2. * C4 * pow(m_rho, 6) -
2838 1. * pow(s, 2) + pow(m_rho, 2) * s * (-3. + 1. * C4 * s) +
2839 pow(m_rho, 4) * (1. + 1. * C4 * s) +
2841 (1. * s + pow(m_rho, 2) * (1. - 2. * C4 * s)))) *
2844 (0.0625 * (1. * eta1 - 1. * eta2) *
2846 (eta1 * (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
2848 pow(
pion_mass, 2) * (18. * pow(m_rho, 2) - 12. * s) -
2849 8. * pow(m_rho, 2) * s + 7. * pow(s, 2) +
2850 pow(a1_mass, 2) * (-10. * pow(
pion_mass, 2) -
2851 4. * pow(m_rho, 2) + 5. * s)) +
2852 eta2 * (-3. * pow(a1_mass, 4) - 12. * pow(
pion_mass, 4) +
2853 2. * pow(m_rho, 4) +
2854 pow(a1_mass, 2) * (11. * pow(
pion_mass, 2) -
2855 3. * pow(m_rho, 2) - 2. * s) +
2856 5. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
2857 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 6. * s))) +
2859 (eta1 * (-8. * C4 * pow(a1_mass, 4) -
2860 32. * C4 * pow(
pion_mass, 4) - 6. * pow(m_rho, 2) +
2863 8. * pow(m_rho, 2) - 16. * s)) +
2864 4. * s + 16. * C4 * pow(m_rho, 2) * s -
2865 8. * C4 * pow(s, 2) +
2867 (-12. - 32. * C4 * pow(m_rho, 2) + 32. * C4 * s)) +
2869 (8. * C4 * pow(a1_mass, 4) + 32. * C4 * pow(
pion_mass, 4) -
2870 4. * pow(m_rho, 2) - 2. * s + 8. * C4 * pow(s, 2) +
2872 (10. - 16. * C4 * pow(m_rho, 2) - 32. * C4 * s) +
2875 8. * pow(m_rho, 2) + 16. * s))))) *
2878 0.0625 * (-2. + delta) * pow(eta1 - 1. * eta2, 2) * pow(tmax, 2) +
2880 (1.3333333333333333 * pow(m_rho, 2) +
2881 5.333333333333333 * C4 * pow(m_rho, 4) +
2883 (1. * pow(
pion_mass, 2) + 1.3333333333333333 * pow(m_rho, 2) -
2884 0.3333333333333333 * s) +
2886 (-2. * pow(
pion_mass, 2) - 3.3333333333333335 * pow(m_rho, 2) -
2887 2.6666666666666665 * C4 * pow(m_rho, 4) +
2888 0.6666666666666666 * s)) *
2891 0.03125 * pow(eta1 - 1. * eta2, 3) *
2892 (eta2 * (-1. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
2893 1. * pow(m_rho, 2) - 1. * s) +
2894 eta1 * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
2895 1. * pow(m_rho, 2) + s)) *
2898 (0.3333333333333333 * pow(m_rho, 4) -
2899 1.3333333333333333 * C4 * pow(m_rho, 6) +
2900 delta * pow(m_rho, 2) *
2901 (1.3333333333333333 * pow(m_rho, 2) -
2902 0.6666666666666666 * C4 * pow(m_rho, 4) +
2903 pow(
pion_mass, 2) * (-0.6666666666666666 +
2904 1.3333333333333333 * C4 * pow(m_rho, 2)) -
2905 0.6666666666666666 * s) +
2907 (1. * pow(
pion_mass, 4) + 0.25 * pow(m_rho, 4) +
2908 pow(
pion_mass, 2) * (-0.3333333333333333 * pow(m_rho, 2) +
2909 0.6666666666666666 * s) -
2910 0.5833333333333334 * pow(s, 2))) *
2913 (0.03125 * (1. * eta1 - 1. * eta2) *
2914 ((2. * eta1 - 2. * eta2) * pow(m_rho, 2) +
2916 (eta1 * (1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) + 1. * s) +
2917 eta2 * (-1. * pow(a1_mass, 2) + 3. * pow(
pion_mass, 2) -
2918 3. * pow(m_rho, 2) + 2. * s))) *
2922 (0. - 4. * pow(m_rho, 4) +
2923 delta * (16. * pow(m_rho, 4) - 8. * pow(m_rho, 2) * s) +
2925 (4. * pow(
pion_mass, 4) - 3. * pow(m_rho, 4) +
2926 2. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
2927 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s))) *
2931 (C4 * pow(m_rho, 6) *
2932 (-6. - 16. * C4 * pow(
pion_mass, 2) + 8. * C4 * s) +
2934 (1. * pow(
pion_mass, 4) - 0.25 * pow(m_rho, 4) +
2935 pow(
pion_mass, 2) * (-1.75 * pow(m_rho, 2) + 0.5 * s) +
2936 0.5 * pow(m_rho, 2) * s - 0.5 * pow(s, 2)) +
2937 delta * pow(m_rho, 2) *
2938 (1. * C4 * pow(m_rho, 4) +
2939 pow(
pion_mass, 2) * (0.5 + 10. * C4 * pow(m_rho, 2)) - 0.5 * s +
2940 pow(m_rho, 2) * (2.5 - 4. * C4 * s))) *
2943 (0.09375 * (1. * eta1 - 1. * eta2) *
2944 (delta * (eta2 * (-1. * pow(a1_mass, 2) +
2945 3.6666666666666665 * pow(
pion_mass, 2) -
2946 1. * pow(m_rho, 2) - 0.6666666666666666 * s) +
2947 eta1 * (1. * pow(a1_mass, 2) -
2948 3.3333333333333335 * pow(
pion_mass, 2) -
2949 1.3333333333333333 * pow(m_rho, 2) +
2950 1.6666666666666667 * s)) +
2952 (eta1 * (2. + C4 * (-2.6666666666666665 * pow(a1_mass, 2) +
2953 10.666666666666666 * pow(
pion_mass, 2) +
2954 2.6666666666666665 * pow(m_rho, 2) -
2955 5.333333333333333 * s)) +
2956 eta2 * (-2. + C4 * (2.6666666666666665 * pow(a1_mass, 2) -
2957 10.666666666666666 * pow(
pion_mass, 2) +
2958 2.6666666666666665 * pow(m_rho, 2) +
2959 5.333333333333333 * s)))) *
2962 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) * pow(tmax, 3) -
2963 (0.041666666666666664 * delta * (-2. + 1. * delta) * pow(tmax, 3)) /
2965 (0.020833333333333332 * delta * pow(1. * eta1 - 1. * eta2, 2) *
2968 (0.16666666666666666 * pow(1. * eta1 - 1. * eta2, 2) *
2969 (-0.375 * delta + 1. * C4 * pow(m_rho, 2)) * pow(tmax, 3)) /
2971 (0.10416666666666666 * delta *
2972 (-0.8 * pow(m_rho, 2) +
2973 delta * (0.4 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.6 * s)) *
2976 (0.16666666666666666 * delta *
2977 (0. - 0.75 * delta * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4) +
2978 0.625 * delta * s) *
2981 (0.041666666666666664 *
2982 (12. * C4 * delta * pow(m_rho, 4) - 16. * pow(C4, 2) * pow(m_rho, 6) +
2984 (1. * pow(
pion_mass, 2) - 2.5 * pow(m_rho, 2) + 1. * s)) *
2988 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
2990 0.25 * pow(2. - 1. * delta, 2) * pow(m_rho, 10) -
2991 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(m_rho, 6) *
2993 pow(2. - 1. * delta, 2) * pow(
pion_mass, 2) * pow(m_rho, 6) *
2994 (-1. * pow(m_rho, 2) + 1. * s)) /
2995 (pow(m_rho, 6) * (-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmax)) -
2996 (0.0625 * (1. * eta1 - 1. * eta2) *
2997 (2. * pow(m_rho, 2) +
2998 delta * (1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
2999 1. * pow(m_rho, 2) + 1. * s)) *
3000 (eta2 * (-1. * pow(a1_mass, 6) +
3003 (3. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 2. * s) +
3006 (4. * pow(m_rho, 2) - 1. * s) * s)) +
3007 eta1 * (1. * pow(a1_mass, 6) + 8. * pow(
pion_mass, 6) +
3008 pow(
pion_mass, 4) * (-4. * pow(m_rho, 2) - 6. * s) +
3009 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 2. * s) * s +
3011 (-2. * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) + 1. * s) +
3012 s * (2. * pow(m_rho, 4) - 3. * pow(m_rho, 2) * s +
3015 (-2. * pow(
pion_mass, 4) - 2. * pow(m_rho, 4) +
3016 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
3017 2. * pow(m_rho, 2) * s + 5. * pow(s, 2)))) *
3018 log(abs(-pow(a1_mass, 2) + tmax))) /
3019 (pow(m_rho, 2) * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) + s)) +
3020 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
3022 (-1. * pow(a1_mass, 6) + pow(
pion_mass, 6) -
3023 1. * pow(
pion_mass, 4) * pow(m_rho, 2) +
3024 pow(a1_mass, 4) * (pow(
pion_mass, 2) + pow(m_rho, 2) - 2. * s) +
3030 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + s) +
3032 (-4. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) -
3033 1. * pow(m_rho, 2) * s +
3034 pow(
pion_mass, 2) * (3. * pow(m_rho, 2) + s)) +
3036 (pow(
pion_mass, 4) + pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
3037 pow(
pion_mass, 2) * (pow(m_rho, 2) + 2. * s)))) *
3038 log(abs(-pow(a1_mass, 2) + tmax))) /
3039 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
3040 0.0625 * pow(eta1 - 1. * eta2, 2) *
3042 (2. * pow(a1_mass, 6) +
3043 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) - 1. * s) +
3044 pow(m_rho, 2) * (pow(m_rho, 2) - 1. * s) * s +
3046 (-6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) + 3. * s) +
3048 (-2. * pow(m_rho, 4) + 3. * pow(m_rho, 2) * s) +
3050 (4. * pow(
pion_mass, 4) + pow(m_rho, 4) +
3051 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 4. * s) -
3052 4. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
3054 (2. * pow(a1_mass, 6) +
3056 (-6. * pow(
pion_mass, 2) + 3. * pow(m_rho, 2) + 3. * s) +
3058 (-1. * pow(m_rho, 4) +
3059 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 1. * s) +
3060 pow(m_rho, 2) * s) +
3062 (4. * pow(
pion_mass, 4) + pow(m_rho, 4) +
3063 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) - 4. * s) -
3064 2. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
3066 (-4. * pow(a1_mass, 6) +
3067 pow(a1_mass, 4) * (12. * pow(
pion_mass, 2) - 6. * s) +
3069 (-2. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s +
3070 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) + 2. * s)) +
3072 (-8. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
3073 4. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
3074 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s)))) *
3075 log(abs(-pow(a1_mass, 2) + tmax)) +
3076 (0.0625 * (1. * eta1 - 1. * eta2) *
3079 (3. * pow(a1_mass, 6) + 8. * pow(
pion_mass, 6) +
3080 pow(
pion_mass, 4) * (-12. * pow(m_rho, 2) - 6. * s) +
3081 pow(a1_mass, 4) * (-10. * pow(
pion_mass, 2) -
3082 4. * pow(m_rho, 2) + 5. * s) +
3084 (-4. * pow(m_rho, 4) + 10. * pow(m_rho, 2) * s -
3086 s * (3. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
3089 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
3090 pow(
pion_mass, 2) * (18. * pow(m_rho, 2) - 12. * s) -
3091 8. * pow(m_rho, 2) * s + 7. * pow(s, 2))) +
3093 (-3. * pow(a1_mass, 6) +
3094 pow(a1_mass, 4) * (11. * pow(
pion_mass, 2) -
3095 3. * pow(m_rho, 2) - 2. * s) +
3097 (-2. * pow(m_rho, 4) + pow(m_rho, 2) * s -
3099 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 4. * s)) +
3101 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
3102 5. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
3103 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 6. * s)))) +
3106 (8. * C4 * pow(a1_mass, 6) +
3108 ((4. + 8. * C4 * pow(
pion_mass, 2)) * pow(m_rho, 2) -
3112 8. * pow(m_rho, 2) + 16. * s)) +
3114 (32. * C4 * pow(
pion_mass, 4) - 4. * pow(m_rho, 2) +
3116 (10. - 16. * C4 * pow(m_rho, 2) - 32. * C4 * s) +
3117 s * (-2. + 8. * C4 * s))) +
3118 eta1 * (-8. * C4 * pow(a1_mass, 6) +
3119 pow(
pion_mass, 4) * (4. + 24. * C4 * pow(m_rho, 2)) +
3122 8. * pow(m_rho, 2) - 16. * s)) +
3123 s * (-2. * pow(m_rho, 2) + 2. * s) +
3125 (-4. * s + pow(m_rho, 2) * (8. - 16. * C4 * s)) +
3126 pow(a1_mass, 2) * (-32. * C4 * pow(
pion_mass, 4) +
3127 s * (4. - 8. * C4 * s) +
3128 pow(m_rho, 2) * (-6. + 16. * C4 * s) +
3130 (-12. - 32. * C4 * pow(m_rho, 2) +
3132 log(abs(-pow(a1_mass, 2) + tmax))) /
3134 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
3136 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
3139 1. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
3140 pow(
pion_mass, 4) * (pow(m_rho, 2) + 2. * s))) *
3142 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) -
3144 (0. - 32. * C4 * pow(
pion_mass, 6) * pow(m_rho, 4) -
3145 8. * pow(m_rho, 8) + 8. * pow(m_rho, 6) * s +
3146 pow(
pion_mass, 4) * pow(m_rho, 4) * (16. + 64. * C4 * s) +
3148 (24. * pow(m_rho, 2) + s * (-16. - 32. * C4 * s)) +
3149 pow(delta, 2) * pow(m_rho, 2) *
3150 (-4. * pow(
pion_mass, 6) - 2. * pow(m_rho, 6) +
3151 2. * pow(m_rho, 4) * s +
3152 pow(
pion_mass, 4) * (4. * pow(m_rho, 2) + 8. * s) +
3154 (6. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s -
3155 4.000000000000001 * pow(s, 2))) +
3156 delta * pow(m_rho, 2) *
3157 (8. * pow(m_rho, 6) +
3158 pow(
pion_mass, 6) * (8. + 16. * C4 * pow(m_rho, 2)) -
3159 8. * pow(m_rho, 4) * s +
3162 pow(m_rho, 2) * (-15.999999999999996 - 32. * C4 * s)) +
3164 (-24. * pow(m_rho, 4) + 8. * pow(s, 2) +
3165 pow(m_rho, 2) * s * (16. + 16. * C4 * s)))) *
3167 (pow(m_rho, 4) * (-1. * pow(
pion_mass, 2) + 1. * s)) -
3168 (0.25 * (1. * eta1 - 1. * eta2) *
3169 (eta2 * ((2. - 1. * delta) * pow(
pion_mass, 6) +
3171 ((-12. + 6. * delta) * pow(m_rho, 2) +
3172 (6. - 3. * delta) * s) +
3173 pow(s, 2) * ((4. - 2. * delta) * pow(m_rho, 2) +
3174 (-2. + 1. * delta) * s) +
3175 pow(
pion_mass, 4) * ((8. - 4. * delta) * pow(m_rho, 2) +
3176 (-6. + 3. * delta) * s)) +
3177 eta1 * ((-2. + 1. * delta) * pow(
pion_mass, 6) +
3178 (-2. + 1. * delta) * pow(m_rho, 4) * s +
3179 (2. - 1. * delta) * pow(s, 3) +
3180 pow(
pion_mass, 4) * ((-4. + 2. * delta) * pow(m_rho, 2) +
3181 (6. - 3. * delta) * s) +
3182 pow(
pion_mass, 2) * ((2. - 1. * delta) * pow(m_rho, 4) +
3183 (4. - 2. * delta) * pow(m_rho, 2) * s +
3184 (-6. + 3. * delta) * pow(s, 2)))) *
3185 log(abs(-2. * pow(
pion_mass, 2) + s + tmax))) /
3186 (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) + s) +
3189 (32. - 31.999999999999993 * delta + 8. * pow(delta, 2)) *
3191 2.0000000000000004 * pow(2. - 1. * delta, 2) * pow(m_rho, 8) +
3193 (8.000000000000002 * pow(2. - 1. * delta, 2) * pow(m_rho, 2) +
3194 (-32. + 31.999999999999996 * delta - 8. * pow(delta, 2)) * s)) *
3195 log(abs(-2. * pow(
pion_mass, 2) + s + tmax))) /
3196 (pow(m_rho, 4) * (-1. * pow(
pion_mass, 2) + 1. * s)) +
3198 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 6) + 4. * pow(m_rho, 8) -
3199 8. * pow(m_rho, 6) * s +
3200 delta * pow(m_rho, 4) *
3201 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) +
3202 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 16. * s) +
3203 8. * pow(m_rho, 2) * s + 8. * pow(s, 2)) +
3204 pow(delta, 2) * pow(m_rho, 4) *
3205 (-4. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) -
3206 2. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
3207 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 8. * s))) *
3208 log(abs(-2. * pow(
pion_mass, 2) + s + tmax))) /
3212 pow(
pion_mass, 2) * (4. * pow(m_rho, 6) - 8. * C4 * pow(m_rho, 8)) -
3213 4. * pow(m_rho, 6) * s + 8. * C4 * pow(m_rho, 8) * s +
3214 pow(delta, 2) * pow(m_rho, 4) *
3215 (-2. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) - 2. * pow(s, 2) +
3216 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s)) +
3217 delta * pow(m_rho, 4) *
3220 (6. * pow(m_rho, 2) + 4. * C4 * pow(m_rho, 4) - 8. * s) +
3221 2. * pow(m_rho, 2) * s + 4. * pow(s, 2) +
3222 pow(m_rho, 4) * (-2. - 4. * C4 * s))) *
3223 log(abs(-2. * pow(
pion_mass, 2) + s + tmax))) /
3226 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
3227 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))) -
3228 (pow(
Const, 2) * pow(ghat, 4) *
3230 (0.03125 * pow(eta1 - 1. * eta2, 2) *
3232 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
3233 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
3234 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
3236 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
3238 (-2. * pow(m_rho, 4) +
3239 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 2. * s) +
3240 2. * pow(m_rho, 2) * s) +
3242 (4. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
3243 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) - 4. * s) -
3244 2. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
3246 (-2. * pow(a1_mass, 8) - 2. * pow(
pion_mass, 8) +
3247 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
3248 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
3250 (-4. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
3251 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) + 4. * s)) +
3253 (-8. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
3254 4. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
3255 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s))) +
3257 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
3258 2. * pow(
pion_mass, 6) * pow(m_rho, 2) -
3259 2. * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
3261 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
3263 (3. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s) +
3265 (4. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
3266 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 4. * s) -
3267 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
3269 (pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) - 2. * s) +
3270 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
3272 (-4. * pow(m_rho, 4) + 6. * pow(m_rho, 2) * s))))) /
3273 (1. * pow(a1_mass, 2) - 1. * tmin) +
3274 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
3275 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
3277 (0.25 * pow(-2. + delta, 2) * pow(
pion_mass, 2) * tmin) /
3279 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
3280 (eta2 * (-1. * pow(a1_mass, 2) + pow(m_rho, 2) - 2. * s) +
3281 eta1 * (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
3282 2. * pow(m_rho, 2) + s)) *
3284 0.03125 * pow(eta1 - 1. * eta2, 2) *
3285 (pow(eta1, 2) * (3. * pow(a1_mass, 4) + 4. * pow(
pion_mass, 4) +
3287 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 4. * s) -
3288 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
3289 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) -
3290 4. * pow(m_rho, 2) + 4. * s)) +
3292 (3. * pow(a1_mass, 4) + 4. * pow(
pion_mass, 4) +
3294 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) - 4. * s) -
3295 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
3297 (-8. * pow(
pion_mass, 2) + 4. * pow(m_rho, 2) + 4. * s)) +
3299 (-6. * pow(a1_mass, 4) - 8. * pow(
pion_mass, 4) +
3300 2. * pow(m_rho, 4) +
3301 pow(a1_mass, 2) * (16. * pow(
pion_mass, 2) - 8. * s) +
3302 4. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
3303 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s))) *
3306 (0. - 0.25 * pow(m_rho, 4) - 1. * C4 * pow(m_rho, 6) +
3307 pow(
pion_mass, 2) * (0.75 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
3308 2. * C4 * pow(m_rho, 4) * s +
3310 (-0.125 * pow(
pion_mass, 4) - 0.1875 * pow(m_rho, 4) +
3311 pow(
pion_mass, 2) * (0.0625 * pow(m_rho, 2) + 0.0625 * s) +
3312 0.1875 * pow(m_rho, 2) * s) +
3313 delta * (0.25 * pow(
pion_mass, 4) + 0.5 * C4 * pow(m_rho, 6) +
3314 pow(
pion_mass, 2) * (-0.5 * pow(m_rho, 2) +
3315 0.5 * C4 * pow(m_rho, 4) - 0.125 * s) -
3316 0.375 * pow(m_rho, 2) * s +
3317 pow(m_rho, 4) * (0.5 - 1. * C4 * s))) *
3321 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 4) - 12. * pow(m_rho, 6) +
3322 4. * pow(m_rho, 4) * s +
3323 delta * pow(m_rho, 2) *
3325 16. * pow(
pion_mass, 2) * pow(m_rho, 2) - 4. * pow(m_rho, 4) +
3326 16. * pow(m_rho, 2) * s + 4. * pow(s, 2)) +
3328 (8. * pow(
pion_mass, 6) + 9. * pow(m_rho, 6) +
3329 pow(
pion_mass, 4) * (4. * pow(m_rho, 2) - 4. * s) -
3330 13. * pow(m_rho, 4) * s - 5. * pow(m_rho, 2) * pow(s, 2) +
3332 pow(
pion_mass, 2) * (-2. * pow(m_rho, 4) +
3333 4. * pow(m_rho, 2) * s - 2. * pow(s, 2)))) *
3336 (0.0625 * (1. * eta1 - 1. * eta2) *
3338 (eta1 * (2. * pow(a1_mass, 2) + 2. * pow(m_rho, 2)) +
3339 eta2 * (-2. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
3340 8. * pow(m_rho, 2) + 6. * s)) +
3342 (eta1 * (1. * pow(a1_mass, 4) - 2. * pow(
pion_mass, 4) -
3343 3. * pow(m_rho, 4) +
3344 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
3345 2. * pow(m_rho, 2) * s + 5.000000000000001 * pow(s, 2) +
3346 pow(a1_mass, 2) * (-2. * pow(
pion_mass, 2) + 1. * s)) +
3347 eta2 * (-1. * pow(a1_mass, 4) - 4. * pow(
pion_mass, 4) +
3348 4. * pow(m_rho, 4) +
3349 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) - 2. * s) +
3350 1. * pow(m_rho, 2) * s - 1. * pow(s, 2) +
3351 pow(a1_mass, 2) * (3. * pow(
pion_mass, 2) -
3352 3. * pow(m_rho, 2) + 2. * s)))) *
3357 (-1.5 + C4 * (-12. * pow(
pion_mass, 2) + 6. * s) +
3358 pow(C4, 2) * (-16. * pow(
pion_mass, 4) +
3359 16. * pow(
pion_mass, 2) * s - 4. * pow(s, 2))) +
3362 0.125 * pow(m_rho, 6) + 0.25 * pow(m_rho, 4) * s -
3363 0.875 * pow(m_rho, 2) * pow(s, 2) + 0.25 * pow(s, 3) +
3365 (-2.5 * pow(m_rho, 4) + 2.25 * pow(m_rho, 2) * s -
3366 0.75 * pow(s, 2))) +
3367 delta * pow(m_rho, 2) *
3368 (pow(
pion_mass, 4) * (1. + 8. * C4 * pow(m_rho, 2)) +
3369 0.5 * pow(s, 2) + pow(m_rho, 4) * (1.5 - 5. * C4 * s) +
3370 pow(m_rho, 2) * s * (-0.5 + 1. * C4 * s) +
3371 pow(
pion_mass, 2) * (6. * C4 * pow(m_rho, 4) - 1.5 * s +
3372 pow(m_rho, 2) * (3. - 6. * C4 * s)))) *
3376 (0. - 4. * C4 * pow(m_rho, 8) - 0.5 * pow(m_rho, 4) * s +
3377 pow(m_rho, 6) * (2. + 2. * C4 * s) +
3379 (-2. * pow(
pion_mass, 6) - 2. * pow(m_rho, 6) +
3380 0.5 * pow(
pion_mass, 4) * s + 2.125 * pow(m_rho, 4) * s +
3381 1.25 * pow(m_rho, 2) * pow(s, 2) - 0.375 * pow(s, 3) +
3382 pow(
pion_mass, 2) * (1.5 * pow(m_rho, 4) -
3383 1.5 * pow(m_rho, 2) * s + 1. * pow(s, 2))) +
3384 delta * pow(m_rho, 2) *
3385 (2. * pow(
pion_mass, 4) + 2. * C4 * pow(m_rho, 6) -
3386 1. * pow(s, 2) + pow(m_rho, 2) * s * (-3. + 1. * C4 * s) +
3387 pow(m_rho, 4) * (1. + 1. * C4 * s) +
3389 (1. * s + pow(m_rho, 2) * (1. - 2. * C4 * s)))) *
3392 (0.0625 * (1. * eta1 - 1. * eta2) *
3394 (eta1 * (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
3396 pow(
pion_mass, 2) * (18. * pow(m_rho, 2) - 12. * s) -
3397 8. * pow(m_rho, 2) * s + 7. * pow(s, 2) +
3398 pow(a1_mass, 2) * (-10. * pow(
pion_mass, 2) -
3399 4. * pow(m_rho, 2) + 5. * s)) +
3400 eta2 * (-3. * pow(a1_mass, 4) - 12. * pow(
pion_mass, 4) +
3401 2. * pow(m_rho, 4) +
3402 pow(a1_mass, 2) * (11. * pow(
pion_mass, 2) -
3403 3. * pow(m_rho, 2) - 2. * s) +
3404 5. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
3405 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 6. * s))) +
3407 (eta1 * (-8. * C4 * pow(a1_mass, 4) -
3408 32. * C4 * pow(
pion_mass, 4) - 6. * pow(m_rho, 2) +
3411 8. * pow(m_rho, 2) - 16. * s)) +
3412 4. * s + 16. * C4 * pow(m_rho, 2) * s -
3413 8. * C4 * pow(s, 2) +
3415 (-12. - 32. * C4 * pow(m_rho, 2) + 32. * C4 * s)) +
3417 (8. * C4 * pow(a1_mass, 4) + 32. * C4 * pow(
pion_mass, 4) -
3418 4. * pow(m_rho, 2) - 2. * s + 8. * C4 * pow(s, 2) +
3420 (10. - 16. * C4 * pow(m_rho, 2) - 32. * C4 * s) +
3423 8. * pow(m_rho, 2) + 16. * s))))) *
3426 0.0625 * (-2. + delta) * pow(eta1 - 1. * eta2, 2) * pow(tmin, 2) +
3428 (1.3333333333333333 * pow(m_rho, 2) +
3429 5.333333333333333 * C4 * pow(m_rho, 4) +
3431 (1. * pow(
pion_mass, 2) + 1.3333333333333333 * pow(m_rho, 2) -
3432 0.3333333333333333 * s) +
3434 (-2. * pow(
pion_mass, 2) - 3.3333333333333335 * pow(m_rho, 2) -
3435 2.6666666666666665 * C4 * pow(m_rho, 4) +
3436 0.6666666666666666 * s)) *
3439 0.03125 * pow(eta1 - 1. * eta2, 3) *
3440 (eta2 * (-1. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
3441 1. * pow(m_rho, 2) - 1. * s) +
3442 eta1 * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
3443 1. * pow(m_rho, 2) + s)) *
3446 (0.3333333333333333 * pow(m_rho, 4) -
3447 1.3333333333333333 * C4 * pow(m_rho, 6) +
3448 delta * pow(m_rho, 2) *
3449 (1.3333333333333333 * pow(m_rho, 2) -
3450 0.6666666666666666 * C4 * pow(m_rho, 4) +
3451 pow(
pion_mass, 2) * (-0.6666666666666666 +
3452 1.3333333333333333 * C4 * pow(m_rho, 2)) -
3453 0.6666666666666666 * s) +
3455 (1. * pow(
pion_mass, 4) + 0.25 * pow(m_rho, 4) +
3456 pow(
pion_mass, 2) * (-0.3333333333333333 * pow(m_rho, 2) +
3457 0.6666666666666666 * s) -
3458 0.5833333333333334 * pow(s, 2))) *
3461 (0.03125 * (1. * eta1 - 1. * eta2) *
3462 ((2. * eta1 - 2. * eta2) * pow(m_rho, 2) +
3464 (eta1 * (1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) + 1. * s) +
3465 eta2 * (-1. * pow(a1_mass, 2) + 3. * pow(
pion_mass, 2) -
3466 3. * pow(m_rho, 2) + 2. * s))) *
3470 (0. - 4. * pow(m_rho, 4) +
3471 delta * (16. * pow(m_rho, 4) - 8. * pow(m_rho, 2) * s) +
3473 (4. * pow(
pion_mass, 4) - 3. * pow(m_rho, 4) +
3474 2. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
3475 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s))) *
3479 (C4 * pow(m_rho, 6) *
3480 (-6. - 16. * C4 * pow(
pion_mass, 2) + 8. * C4 * s) +
3482 (1. * pow(
pion_mass, 4) - 0.25 * pow(m_rho, 4) +
3483 pow(
pion_mass, 2) * (-1.75 * pow(m_rho, 2) + 0.5 * s) +
3484 0.5 * pow(m_rho, 2) * s - 0.5 * pow(s, 2)) +
3485 delta * pow(m_rho, 2) *
3486 (1. * C4 * pow(m_rho, 4) +
3487 pow(
pion_mass, 2) * (0.5 + 10. * C4 * pow(m_rho, 2)) - 0.5 * s +
3488 pow(m_rho, 2) * (2.5 - 4. * C4 * s))) *
3491 (0.09375 * (1. * eta1 - 1. * eta2) *
3492 (delta * (eta2 * (-1. * pow(a1_mass, 2) +
3493 3.6666666666666665 * pow(
pion_mass, 2) -
3494 1. * pow(m_rho, 2) - 0.6666666666666666 * s) +
3495 eta1 * (1. * pow(a1_mass, 2) -
3496 3.3333333333333335 * pow(
pion_mass, 2) -
3497 1.3333333333333333 * pow(m_rho, 2) +
3498 1.6666666666666667 * s)) +
3500 (eta1 * (2. + C4 * (-2.6666666666666665 * pow(a1_mass, 2) +
3501 10.666666666666666 * pow(
pion_mass, 2) +
3502 2.6666666666666665 * pow(m_rho, 2) -
3503 5.333333333333333 * s)) +
3504 eta2 * (-2. + C4 * (2.6666666666666665 * pow(a1_mass, 2) -
3505 10.666666666666666 * pow(
pion_mass, 2) +
3506 2.6666666666666665 * pow(m_rho, 2) +
3507 5.333333333333333 * s)))) *
3510 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) * pow(tmin, 3) -
3511 (0.041666666666666664 * delta * (-2. + 1. * delta) * pow(tmin, 3)) /
3513 (0.020833333333333332 * delta * pow(1. * eta1 - 1. * eta2, 2) *
3516 (0.16666666666666666 * pow(1. * eta1 - 1. * eta2, 2) *
3517 (-0.375 * delta + 1. * C4 * pow(m_rho, 2)) * pow(tmin, 3)) /
3519 (0.10416666666666666 * delta *
3520 (-0.8 * pow(m_rho, 2) +
3521 delta * (0.4 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.6 * s)) *
3524 (0.16666666666666666 * delta *
3525 (0. - 0.75 * delta * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4) +
3526 0.625 * delta * s) *
3529 (0.041666666666666664 *
3530 (12. * C4 * delta * pow(m_rho, 4) - 16. * pow(C4, 2) * pow(m_rho, 6) +
3532 (1. * pow(
pion_mass, 2) - 2.5 * pow(m_rho, 2) + 1. * s)) *
3536 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
3538 0.25 * pow(2. - 1. * delta, 2) * pow(m_rho, 10) -
3539 0.5000000000000001 * pow(2. - 1. * delta, 2) * pow(m_rho, 6) *
3541 pow(2. - 1. * delta, 2) * pow(
pion_mass, 2) * pow(m_rho, 6) *
3542 (-1. * pow(m_rho, 2) + 1. * s)) /
3543 (pow(m_rho, 6) * (-2. * pow(
pion_mass, 2) + 1. * s + 1. * tmin)) -
3544 (0.0625 * (1. * eta1 - 1. * eta2) *
3545 (2. * pow(m_rho, 2) +
3546 delta * (1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
3547 1. * pow(m_rho, 2) + 1. * s)) *
3548 (eta2 * (-1. * pow(a1_mass, 6) +
3551 (3. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 2. * s) +
3554 (4. * pow(m_rho, 2) - 1. * s) * s)) +
3555 eta1 * (1. * pow(a1_mass, 6) + 8. * pow(
pion_mass, 6) +
3556 pow(
pion_mass, 4) * (-4. * pow(m_rho, 2) - 6. * s) +
3557 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 2. * s) * s +
3559 (-2. * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) + 1. * s) +
3560 s * (2. * pow(m_rho, 4) - 3. * pow(m_rho, 2) * s +
3563 (-2. * pow(
pion_mass, 4) - 2. * pow(m_rho, 4) +
3564 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
3565 2. * pow(m_rho, 2) * s + 5. * pow(s, 2)))) *
3566 log(abs(-pow(a1_mass, 2) + tmin))) /
3567 (pow(m_rho, 2) * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) + s)) +
3568 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
3570 (-1. * pow(a1_mass, 6) + pow(
pion_mass, 6) -
3571 1. * pow(
pion_mass, 4) * pow(m_rho, 2) +
3572 pow(a1_mass, 4) * (pow(
pion_mass, 2) + pow(m_rho, 2) - 2. * s) +
3578 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + s) +
3580 (-4. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) -
3581 1. * pow(m_rho, 2) * s +
3582 pow(
pion_mass, 2) * (3. * pow(m_rho, 2) + s)) +
3584 (pow(
pion_mass, 4) + pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
3585 pow(
pion_mass, 2) * (pow(m_rho, 2) + 2. * s)))) *
3586 log(abs(-pow(a1_mass, 2) + tmin))) /
3587 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
3588 0.0625 * pow(eta1 - 1. * eta2, 2) *
3590 (2. * pow(a1_mass, 6) +
3591 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) - 1. * s) +
3592 pow(m_rho, 2) * (pow(m_rho, 2) - 1. * s) * s +
3594 (-6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) + 3. * s) +
3596 (-2. * pow(m_rho, 4) + 3. * pow(m_rho, 2) * s) +
3598 (4. * pow(
pion_mass, 4) + pow(m_rho, 4) +
3599 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 4. * s) -
3600 4. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
3602 (2. * pow(a1_mass, 6) +
3604 (-6. * pow(
pion_mass, 2) + 3. * pow(m_rho, 2) + 3. * s) +
3606 (-1. * pow(m_rho, 4) +
3607 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 1. * s) +
3608 pow(m_rho, 2) * s) +
3610 (4. * pow(
pion_mass, 4) + pow(m_rho, 4) +
3611 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) - 4. * s) -
3612 2. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
3614 (-4. * pow(a1_mass, 6) +
3615 pow(a1_mass, 4) * (12. * pow(
pion_mass, 2) - 6. * s) +
3617 (-2. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s +
3618 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) + 2. * s)) +
3620 (-8. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
3621 4. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
3622 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s)))) *
3623 log(abs(-pow(a1_mass, 2) + tmin)) +
3624 (0.0625 * (1. * eta1 - 1. * eta2) *
3627 (3. * pow(a1_mass, 6) + 8. * pow(
pion_mass, 6) +
3628 pow(
pion_mass, 4) * (-12. * pow(m_rho, 2) - 6. * s) +
3629 pow(a1_mass, 4) * (-10. * pow(
pion_mass, 2) -
3630 4. * pow(m_rho, 2) + 5. * s) +
3632 (-4. * pow(m_rho, 4) + 10. * pow(m_rho, 2) * s -
3634 s * (3. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
3637 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
3638 pow(
pion_mass, 2) * (18. * pow(m_rho, 2) - 12. * s) -
3639 8. * pow(m_rho, 2) * s + 7. * pow(s, 2))) +
3641 (-3. * pow(a1_mass, 6) +
3642 pow(a1_mass, 4) * (11. * pow(
pion_mass, 2) -
3643 3. * pow(m_rho, 2) - 2. * s) +
3645 (-2. * pow(m_rho, 4) + pow(m_rho, 2) * s -
3647 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 4. * s)) +
3649 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
3650 5. * pow(m_rho, 2) * s - 3. * pow(s, 2) +
3651 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 6. * s)))) +
3654 (8. * C4 * pow(a1_mass, 6) +
3656 ((4. + 8. * C4 * pow(
pion_mass, 2)) * pow(m_rho, 2) -
3660 8. * pow(m_rho, 2) + 16. * s)) +
3662 (32. * C4 * pow(
pion_mass, 4) - 4. * pow(m_rho, 2) +
3664 (10. - 16. * C4 * pow(m_rho, 2) - 32. * C4 * s) +
3665 s * (-2. + 8. * C4 * s))) +
3666 eta1 * (-8. * C4 * pow(a1_mass, 6) +
3667 pow(
pion_mass, 4) * (4. + 24. * C4 * pow(m_rho, 2)) +
3670 8. * pow(m_rho, 2) - 16. * s)) +
3671 s * (-2. * pow(m_rho, 2) + 2. * s) +
3673 (-4. * s + pow(m_rho, 2) * (8. - 16. * C4 * s)) +
3674 pow(a1_mass, 2) * (-32. * C4 * pow(
pion_mass, 4) +
3675 s * (4. - 8. * C4 * s) +
3676 pow(m_rho, 2) * (-6. + 16. * C4 * s) +
3678 (-12. - 32. * C4 * pow(m_rho, 2) +
3680 log(abs(-pow(a1_mass, 2) + tmin))) /
3682 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
3684 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
3687 1. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
3688 pow(
pion_mass, 4) * (pow(m_rho, 2) + 2. * s))) *
3690 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) -
3692 (0. - 32. * C4 * pow(
pion_mass, 6) * pow(m_rho, 4) -
3693 8. * pow(m_rho, 8) + 8. * pow(m_rho, 6) * s +
3694 pow(
pion_mass, 4) * pow(m_rho, 4) * (16. + 64. * C4 * s) +
3696 (24. * pow(m_rho, 2) + s * (-16. - 32. * C4 * s)) +
3697 pow(delta, 2) * pow(m_rho, 2) *
3698 (-4. * pow(
pion_mass, 6) - 2. * pow(m_rho, 6) +
3699 2. * pow(m_rho, 4) * s +
3700 pow(
pion_mass, 4) * (4. * pow(m_rho, 2) + 8. * s) +
3702 (6. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s -
3703 4.000000000000001 * pow(s, 2))) +
3704 delta * pow(m_rho, 2) *
3705 (8. * pow(m_rho, 6) +
3706 pow(
pion_mass, 6) * (8. + 16. * C4 * pow(m_rho, 2)) -
3707 8. * pow(m_rho, 4) * s +
3710 pow(m_rho, 2) * (-15.999999999999996 - 32. * C4 * s)) +
3712 (-24. * pow(m_rho, 4) + 8. * pow(s, 2) +
3713 pow(m_rho, 2) * s * (16. + 16. * C4 * s)))) *
3715 (pow(m_rho, 4) * (-1. * pow(
pion_mass, 2) + 1. * s)) -
3716 (0.25 * (1. * eta1 - 1. * eta2) *
3717 (eta2 * ((2. - 1. * delta) * pow(
pion_mass, 6) +
3719 ((-12. + 6. * delta) * pow(m_rho, 2) +
3720 (6. - 3. * delta) * s) +
3721 pow(s, 2) * ((4. - 2. * delta) * pow(m_rho, 2) +
3722 (-2. + 1. * delta) * s) +
3723 pow(
pion_mass, 4) * ((8. - 4. * delta) * pow(m_rho, 2) +
3724 (-6. + 3. * delta) * s)) +
3725 eta1 * ((-2. + 1. * delta) * pow(
pion_mass, 6) +
3726 (-2. + 1. * delta) * pow(m_rho, 4) * s +
3727 (2. - 1. * delta) * pow(s, 3) +
3728 pow(
pion_mass, 4) * ((-4. + 2. * delta) * pow(m_rho, 2) +
3729 (6. - 3. * delta) * s) +
3730 pow(
pion_mass, 2) * ((2. - 1. * delta) * pow(m_rho, 4) +
3731 (4. - 2. * delta) * pow(m_rho, 2) * s +
3732 (-6. + 3. * delta) * pow(s, 2)))) *
3733 log(abs(-2. * pow(
pion_mass, 2) + s + tmin))) /
3734 (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) + s) +
3737 (32. - 31.999999999999993 * delta + 8. * pow(delta, 2)) *
3739 2.0000000000000004 * pow(2. - 1. * delta, 2) * pow(m_rho, 8) +
3741 (8.000000000000002 * pow(2. - 1. * delta, 2) * pow(m_rho, 2) +
3742 (-32. + 31.999999999999996 * delta - 8. * pow(delta, 2)) * s)) *
3743 log(abs(-2. * pow(
pion_mass, 2) + s + tmin))) /
3744 (pow(m_rho, 4) * (-1. * pow(
pion_mass, 2) + 1. * s)) +
3746 (0. + 8. * pow(
pion_mass, 2) * pow(m_rho, 6) + 4. * pow(m_rho, 8) -
3747 8. * pow(m_rho, 6) * s +
3748 delta * pow(m_rho, 4) *
3749 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) +
3750 pow(
pion_mass, 2) * (8. * pow(m_rho, 2) - 16. * s) +
3751 8. * pow(m_rho, 2) * s + 8. * pow(s, 2)) +
3752 pow(delta, 2) * pow(m_rho, 4) *
3753 (-4. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) -
3754 2. * pow(m_rho, 2) * s - 4. * pow(s, 2) +
3755 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 8. * s))) *
3756 log(abs(-2. * pow(
pion_mass, 2) + s + tmin))) /
3760 pow(
pion_mass, 2) * (4. * pow(m_rho, 6) - 8. * C4 * pow(m_rho, 8)) -
3761 4. * pow(m_rho, 6) * s + 8. * C4 * pow(m_rho, 8) * s +
3762 pow(delta, 2) * pow(m_rho, 4) *
3763 (-2. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) - 2. * pow(s, 2) +
3764 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s)) +
3765 delta * pow(m_rho, 4) *
3768 (6. * pow(m_rho, 2) + 4. * C4 * pow(m_rho, 4) - 8. * s) +
3769 2. * pow(m_rho, 2) * s + 4. * pow(s, 2) +
3770 pow(m_rho, 4) * (-2. - 4. * C4 * s))) *
3771 log(abs(-2. * pow(
pion_mass, 2) + s + tmin))) /
3774 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
3775 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)));
3783 const double m_rho) {
3784 const double spin_deg_factor = 3.0;
3792 const double diff_xs =
3793 ((pow(
Const, 2) * pow(ghat, 4) *
3794 ((-0.25 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
3795 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - t, 2) -
3796 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + t))) /
3797 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - t, 2)) -
3798 (0.0625 * (eta1 - eta2) *
3799 (2 * pow(m_rho, 2) +
3800 delta * (-2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s + t)) *
3803 2 * pow(m_rho, 4) * (s - t) + 5 * pow(s, 2) * t +
3804 s * pow(t, 2) + pow(t, 3) +
3805 2 * pow(
pion_mass, 2) * (2 * pow(m_rho, 2) - s - t) * (s + t) -
3806 pow(m_rho, 2) * (3 * s - t) * (s + t) -
3807 2 * pow(
pion_mass, 4) * (2 * pow(m_rho, 2) + 3 * s + t)) +
3809 (4 * pow(
pion_mass, 4) + t * (4 * pow(m_rho, 2) - s + t) -
3811 (pow(m_rho, 2) * (-pow(a1_mass, 2) + t) *
3814 pow(-2. * pow(m_rho, 2) + delta * (2. * pow(
pion_mass, 2) +
3815 pow(m_rho, 2) - 1. * s - 1. * t),
3817 (8. * pow(
pion_mass, 6) + 4. * pow(m_rho, 6) + pow(s, 3) +
3818 pow(m_rho, 4) * (-4. * s - 4. * t) +
3819 pow(
pion_mass, 4) * (-4. * pow(m_rho, 2) - 4. * s - 4. * t) +
3820 3. * pow(s, 2) * t + 3. * s * pow(t, 2) + pow(t, 3) +
3821 pow(m_rho, 2) * (-3. * pow(s, 2) + 2. * s * t - 3. * pow(t, 2)) +
3823 (-8. * pow(m_rho, 4) - 2. * pow(s, 2) - 4. * s * t -
3824 2. * pow(t, 2) + pow(m_rho, 2) * (4. * s + 4. * t)))) /
3826 pow(2. * pow(
pion_mass, 2) - 1. * s - 1. * t, 2)) +
3827 (0.125 * (-2 + delta) * (eta1 - eta2) *
3830 pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * t) +
3831 (pow(m_rho, 2) - 2 * s - t) * t) +
3834 (pow(m_rho, 2) - t) * (pow(m_rho, 2) - s - t) * t +
3835 pow(
pion_mass, 4) * (3 * pow(m_rho, 2) + s + t) -
3836 pow(
pion_mass, 2) * (pow(m_rho, 4) + pow(m_rho, 2) * (s - t) +
3837 2 * t * (-s + t))))) /
3838 ((-pow(a1_mass, 2) + t) * (-pow(
pion_mass, 2) + t)) +
3839 (0.03125 * pow(eta1 - eta2, 2) *
3843 (pow(m_rho, 4) + 2 * (pow(m_rho, 2) + s) * t -
3845 pow(t, 2) * (-pow(m_rho, 4) - 2 * pow(m_rho, 2) * s +
3846 2 * pow(s, 2) + 2 * s * t + pow(t, 2)) +
3848 (pow(m_rho, 4) + pow(m_rho, 2) * (s + t) -
3852 pow(
pion_mass, 4) * (pow(m_rho, 4) + 4 * pow(m_rho, 2) * t -
3853 2 * (s - 2 * t) * t) +
3854 pow(t, 2) * (pow(m_rho, 4) + 2 * pow(s, 2) + 2 * s * t +
3855 pow(t, 2) + 2 * pow(m_rho, 2) * (-s + t)) -
3857 (pow(m_rho, 4) - pow(m_rho, 2) * (s - 2 * t) +
3862 (3 * pow(m_rho, 4) + 2 * pow(m_rho, 2) * (s - 3 * t) -
3863 2 * (s - 2 * t) * t) +
3864 t * (-pow(m_rho, 2) + t) *
3865 (2 * pow(s, 2) + 2 * s * t + pow(t, 2) -
3866 pow(m_rho, 2) * (2 * s + t)) -
3867 2 * pow(
pion_mass, 2) * (-pow(m_rho, 2) + t) *
3868 (2 * t * (s + t) - pow(m_rho, 2) * (s + 2 * t))))) /
3869 pow(pow(a1_mass, 2) - t, 2) -
3871 (-2. * pow(m_rho, 2) +
3872 delta * (2. * pow(
pion_mass, 2) + pow(m_rho, 2) - 1. * s - 1. * t)) *
3874 (-1. * pow(
pion_mass, 6) - 0.5 * pow(m_rho, 6) -
3875 0.1875 * pow(s, 3) +
3876 pow(
pion_mass, 2) * (1. * pow(m_rho, 4) +
3877 pow(m_rho, 2) * (-0.625 * s - 0.375 * t) +
3878 s * (0.5 * s + 0.5 * t)) +
3879 pow(m_rho, 4) * (0.5 * s + 0.5 * t) +
3881 (0.5 * pow(m_rho, 2) + 0.25 * s + 0.75 * t) -
3882 0.4375 * pow(s, 2) * t - 0.3125 * s * pow(t, 2) -
3883 0.0625 * pow(t, 3) +
3885 (0.4375 * pow(s, 2) - 0.25 * s * t + 0.3125 * pow(t, 2))) +
3887 (-0.125 * pow(s, 2) + C4 * pow(m_rho, 4) * (1. * s - 1. * t) +
3889 pow(
pion_mass, 2) * ((0.25 - 1. * C4 * pow(m_rho, 2)) * s +
3890 (-0.25 + 1. * C4 * pow(m_rho, 2)) * t) +
3891 pow(m_rho, 2) * (-0.5 * s + 0.5 * C4 * pow(s, 2) +
3892 t * (0.5 - 0.5 * C4 * t))))) /
3893 (pow(m_rho, 6) * (1. * pow(
pion_mass, 2) - 0.5 * s - 0.5 * t)) +
3895 (-0.5 * pow(
pion_mass, 6) - 0.0625 * pow(m_rho, 6) +
3896 pow(m_rho, 4) * (-0.125 * s - 0.125 * t) +
3897 pow(
pion_mass, 4) * (1. * pow(m_rho, 2) + 0.5 * t) +
3898 s * (-0.125 * pow(s, 2) - 0.25 * s * t - 0.125 * pow(t, 2)) +
3899 pow(
pion_mass, 2) * (1.25 * pow(m_rho, 4) + 0.375 * pow(s, 2) +
3900 pow(m_rho, 2) * (-1.125 * s - 0.875 * t) +
3901 0.25 * s * t - 0.125 * pow(t, 2)) +
3903 (0.4375 * pow(s, 2) + 0.25 * s * t + 0.3125 * pow(t, 2))) +
3906 C4 * (8. * C4 * pow(
pion_mass, 4) + 2. * C4 * pow(s, 2) +
3907 pow(
pion_mass, 2) * (6. - 8. * C4 * s - 8. * C4 * t) +
3908 t * (-3. + 2. * C4 * t) + s * (-3. + 4. * C4 * t))) +
3909 delta * pow(m_rho, 2) *
3910 (pow(
pion_mass, 4) * (-0.5 - 4. * C4 * pow(m_rho, 2)) +
3911 s * (-0.25 * s - 0.25 * t) +
3912 pow(m_rho, 4) * (-0.75 + 2.5 * C4 * s + 0.5 * C4 * t) +
3914 (-0.5 * C4 * pow(s, 2) + s * (0.25 - 2. * C4 * t) +
3915 t * (1.25 - 1.5 * C4 * t)) +
3917 (-3. * C4 * pow(m_rho, 4) + 0.75 * s + 0.25 * t +
3918 pow(m_rho, 2) * (-1.5 + 3. * C4 * s + 5. * C4 * t)))) /
3921 ((0.0625 * (-2. + delta) *
3922 (-2. * pow(m_rho, 2) + delta * (2. * pow(
pion_mass, 2) +
3923 pow(m_rho, 2) - 1. * s - 1. * t)) *
3924 (2. * pow(
pion_mass, 6) + 1. * pow(m_rho, 6) +
3925 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) - 2. * t) +
3926 pow(m_rho, 4) * (-1.5 * s - 1.5 * t) +
3927 pow(m_rho, 2) * s * (0.5 * s + 0.5 * t) +
3928 pow(
pion_mass, 2) * (-1. * pow(m_rho, 4) - 0.5 * pow(s, 2) +
3929 pow(m_rho, 2) * (2.5 * s - 0.5 * t) -
3930 1. * s * t - 0.5 * pow(t, 2)) +
3931 t * (0.5 * pow(s, 2) + 1. * s * t + 0.5 * pow(t, 2)))) /
3933 (1. * pow(
pion_mass, 2) - 0.5 * s - 0.5 * t)) +
3934 (0.0625 * (-2 + delta) *
3935 (6 * delta * pow(
pion_mass, 6) + delta * s * t * (s + t) +
3936 pow(m_rho, 6) * (-2 + 3 * delta + 8 * C4 * t) -
3938 ((-2 + 9 * delta) * pow(m_rho, 2) - 8 * C4 * pow(m_rho, 4) +
3939 delta * (s + 9 * t)) -
3941 (t * (-1 + 3 * delta + 4 * C4 * t) +
3942 s * (-1 + 2 * delta + 8 * C4 * t)) -
3944 (8 * C4 * pow(m_rho, 6) +
3945 2 * pow(m_rho, 4) * (-2 + delta - 8 * C4 * t) +
3946 pow(m_rho, 2) * ((2 - 7 * delta) * s + (2 + 5 * delta) * t) +
3947 delta * (pow(s, 2) - 3 * pow(t, 2))) +
3948 pow(m_rho, 2) * (2 * s * t + delta * (pow(s, 2) + 3 * s * t +
3952 (0.0625 * (eta1 - eta2) *
3955 (4 * C4 * pow(m_rho, 2) * (pow(m_rho, 2) + 4 * t) -
3956 delta * (pow(m_rho, 2) - 2 * s + 6 * t)) +
3958 (2 * pow(m_rho, 4) * (-2 + delta + 8 * C4 * t) +
3959 delta * (pow(s, 2) - 6 * s * t - 11 * pow(t, 2)) +
3960 pow(m_rho, 2) * (-((-2 + delta) * s) + (-10 + delta) * t +
3961 32 * C4 * t * (s + t))) +
3962 t * (-2 * pow(m_rho, 4) * (-2 + delta + 4 * C4 * t) +
3963 delta * (3 * pow(s, 2) + 2 * s * t + 3 * pow(t, 2)) +
3964 pow(m_rho, 2) * ((2 - 5 * delta) * s + 3 * (2 + delta) * t -
3965 8 * C4 * pow(s + t, 2))))) +
3968 delta * (pow(s, 3) + 7 * pow(s, 2) * t + 5 * s * pow(t, 2) +
3971 ((-1 + 2 * delta) * pow(s, 2) +
3972 2 * (-1 + 2 * delta) * s * t +
3973 (-3 + 2 * delta) * pow(t, 2) +
3974 4 * C4 * t * pow(s + t, 2)) +
3976 (24 * C4 * pow(m_rho, 4) + 6 * delta * (-s + t) -
3977 4 * pow(m_rho, 2) * (-1 + 3 * delta + 8 * C4 * t)) +
3978 pow(m_rho, 4) * (t * (-6 + delta + 8 * C4 * t) +
3979 s * (-2 + 3 * delta + 16 * C4 * t)) -
3981 (delta * (s + t) * (s + 5 * t) -
3982 pow(m_rho, 2) * (-2 * s + 5 * delta * s - 6 * t +
3983 9 * delta * t + 16 * C4 * t * (s + t)) +
3985 (-2 + delta + 4 * C4 * (s + 2 * t)))))) /
3986 (pow(m_rho, 2) * (-pow(a1_mass, 2) + t)))) /
3988 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
3989 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))));
4000 const double s,
const double m_rho) {
4009 const double tmin = t_mandelstam[1];
4010 const double tmax = t_mandelstam[0];
4011 const double spin_deg_factor = 3.0;
4015 ((pow(
Const, 2) * pow(g_POR, 4) *
4017 0.25 * pow(
pion_mass, 6) * pow(m_rho, 2) -
4018 0.125 * pow(
pion_mass, 4) * pow(m_rho, 4) +
4020 (0.5 * pow(
pion_mass, 2) + 0.25 * pow(m_rho, 2) - 0.25 * s) +
4022 (0.25 * pow(m_rho, 4) + 0.25 * pow(
pion_mass, 2) * s -
4023 0.25 * pow(m_rho, 2) * s) +
4025 (-0.5 * pow(
pion_mass, 4) - 0.125 * pow(m_rho, 4) +
4026 pow(
pion_mass, 2) * (-0.5 * pow(m_rho, 2) + 0.5 * s) +
4027 0.25 * pow(m_rho, 2) * s - 0.25 * pow(s, 2))) /
4031 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
4032 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4034 (-8. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 4. * s)) *
4040 0.041666666666666664 * pow(tmin, 3) +
4042 0.25 * pow(
pion_mass, 6) * pow(m_rho, 2) +
4043 0.125 * pow(
pion_mass, 4) * pow(m_rho, 4) +
4045 (-0.5 * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2) + 0.25 * s) +
4047 (-0.25 * pow(m_rho, 4) - 0.25 * pow(
pion_mass, 2) * s +
4048 0.25 * pow(m_rho, 2) * s) +
4050 (0.5 * pow(
pion_mass, 4) + 0.125 * pow(m_rho, 4) +
4051 pow(
pion_mass, 2) * (0.5 * pow(m_rho, 2) - 0.5 * s) -
4052 0.25 * pow(m_rho, 2) * s + 0.25 * pow(s, 2))) /
4056 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
4057 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4059 (-8. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 4. * s)) *
4065 0.041666666666666664 * pow(tmax, 3) -
4069 (-6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) + 3. * s) +
4071 (-1. * pow(m_rho, 4) - 1. * pow(
pion_mass, 2) * s +
4072 pow(m_rho, 2) * s) +
4074 (4. * pow(
pion_mass, 4) + pow(m_rho, 4) +
4075 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
4076 2. * pow(m_rho, 2) * s + 2. * pow(s, 2))) *
4081 0.25 * pow(
pion_mass, 6) * pow(m_rho, 2) +
4083 (0.125 * pow(m_rho, 4) +
4084 pow(
omega_mass, 2) * (0.25 * pow(m_rho, 2) - 0.5 * s) -
4085 0.25 * pow(m_rho, 2) * s + s * (1. * s - 0.125 * tmin)) +
4087 (1. * pow(
omega_mass, 4) - 0.25 * pow(m_rho, 4) +
4088 s * (-1.5 * s - 0.75 * tmin) +
4089 pow(m_rho, 2) * (1.5 * s + 0.125 * tmin) +
4091 (-1.0000000000000002 * pow(m_rho, 2) + 0.5 * tmin)) +
4094 (0.25 * pow(m_rho, 2) - 0.5 * s - 0.125 * tmin) +
4096 (0.5 * pow(s, 2) - 0.25 * s * tmin +
4097 (0.125 * pow(m_rho, 2) - 0.08333333333333333 * tmin) *
4099 s * (0.125 * pow(m_rho, 4) + 0.375 * pow(s, 2) +
4100 pow(m_rho, 2) * (-0.5 * s - 0.25 * tmin) +
4102 0.16666666666666666 * pow(tmin, 2)))) +
4105 (1. * pow(
pion_mass, 2) + 0.25 * pow(m_rho, 2) - 0.5 * s) * s +
4107 (0.25 * pow(
pion_mass, 4) - 0.25 * pow(m_rho, 2) * s) +
4109 (pow(
pion_mass, 4) * (0.25 * pow(m_rho, 2) - 0.5 * s) -
4110 1.0000000000000002 * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4115 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) * pow(s, 2) +
4116 (-0.25 * pow(m_rho, 2) + 0.25 * s) * pow(s, 3))) *
4117 log(fabs(-1. * pow(
omega_mass, 2) + tmin)))) /
4122 (-6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) + 3. * s) +
4124 (-1. * pow(m_rho, 4) - 1. * pow(
pion_mass, 2) * s +
4125 pow(m_rho, 2) * s) +
4127 (4. * pow(
pion_mass, 4) + pow(m_rho, 4) +
4128 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) -
4129 2. * pow(m_rho, 2) * s + 2. * pow(s, 2))) *
4134 0.25 * pow(
pion_mass, 6) * pow(m_rho, 2) +
4136 (0.125 * pow(m_rho, 4) +
4137 pow(
omega_mass, 2) * (0.25 * pow(m_rho, 2) - 0.5 * s) -
4138 0.25 * pow(m_rho, 2) * s + s * (1. * s - 0.125 * tmax)) +
4140 (1. * pow(
omega_mass, 4) - 0.25 * pow(m_rho, 4) +
4141 s * (-1.5 * s - 0.75 * tmax) +
4142 pow(m_rho, 2) * (1.5 * s + 0.125 * tmax) +
4144 (-1.0000000000000002 * pow(m_rho, 2) + 0.5 * tmax)) +
4147 (0.25 * pow(m_rho, 2) - 0.5 * s - 0.125 * tmax) +
4149 (0.5 * pow(s, 2) - 0.25 * s * tmax +
4150 (0.125 * pow(m_rho, 2) - 0.08333333333333333 * tmax) *
4152 s * (0.125 * pow(m_rho, 4) + 0.375 * pow(s, 2) +
4153 pow(m_rho, 2) * (-0.5 * s - 0.25 * tmax) +
4155 0.16666666666666666 * pow(tmax, 2)))) +
4158 (1. * pow(
pion_mass, 2) + 0.25 * pow(m_rho, 2) - 0.5 * s) * s +
4160 (0.25 * pow(
pion_mass, 4) - 0.25 * pow(m_rho, 2) * s) +
4162 (pow(
pion_mass, 4) * (0.25 * pow(m_rho, 2) - 0.5 * s) -
4163 1.0000000000000002 * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4168 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) * pow(s, 2) +
4169 (-0.25 * pow(m_rho, 2) + 0.25 * s) * pow(s, 3))) *
4170 log(fabs(-1. * pow(
omega_mass, 2) + tmax)))) /
4173 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
4174 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))));
4181 const double s,
const double t,
const double m_rho) {
4182 const double spin_deg_factor = 3.0;
4192 ((pow(
Const, 2) * pow(g_POR, 4) *
4194 pow(
pion_mass, 4) * (pow(m_rho, 4) - 2 * (s - 2 * t) * t) +
4195 pow(t, 2) * (pow(m_rho, 4) + 2 * pow(s, 2) + 2 * s * t +
4196 pow(t, 2) - 2 * pow(m_rho, 2) * (s + t)) -
4198 (pow(m_rho, 4) + 2 * t * (s + t) -
4199 pow(m_rho, 2) * (s + 2 * t)))) /
4203 4 * pow(
pion_mass, 2) * s * t * (-pow(m_rho, 2) + s + t) +
4204 pow(
pion_mass, 4) * (2 * s * t - pow(m_rho, 2) * (s + t)) +
4206 (pow(s, 2) + 3 * s * t + pow(t, 2) -
4207 pow(m_rho, 2) * (s + t)))) /
4211 (pow(m_rho, 4) + 4 * pow(s, 2) - 2 * s * t) +
4212 pow(s, 2) * (pow(m_rho, 4) + pow(s, 2) + 2 * s * t +
4213 2 * pow(t, 2) - 2 * pow(m_rho, 2) * (s + t)) -
4215 (pow(m_rho, 4) + 2 * s * (s + t) -
4216 pow(m_rho, 2) * (2 * s + t)))) *
4220 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
4221 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))));
4230 const double s,
const double m_rho) {
4241 const double &tmax = t_mandelstam[0];
4242 const double &tmin = t_mandelstam[1];
4243 const double spin_deg_factor = 3.0;
4247 (0.0024867959858108648 * pow(
Const, 2) * pow(g_POR, 4) *
4248 (pow(
pion_mass, 8) * (1. * tmax - 1. * tmin) +
4249 pow(
pion_mass, 6) * pow(m_rho, 2) * (-2. * tmax + 2. * tmin) +
4250 pow(
pion_mass, 4) * (pow(m_rho, 4) * (1. * tmax - 1. * tmin) +
4251 s * (4. * s * tmax - 1. * pow(tmax, 2) -
4252 4. * s * tmin + 1. * pow(tmin, 2))) +
4254 (1. * pow(s, 2) * tmax + 1. * s * pow(tmax, 2) +
4255 0.6666666666666666 * pow(tmax, 3) +
4256 pow(m_rho, 4) * (1. * tmax - 1. * tmin) - 1. * pow(s, 2) * tmin -
4257 1. * s * pow(tmin, 2) - 0.6666666666666666 * pow(tmin, 3) +
4258 pow(m_rho, 2) * (-2. * s * tmax - 1. * pow(tmax, 2) +
4259 2. * s * tmin + 1. * pow(tmin, 2))) +
4261 (pow(m_rho, 4) * (-2. * tmax + 2. * tmin) +
4262 pow(m_rho, 2) * (4. * s * tmax + 1. * pow(tmax, 2) -
4263 4. * s * tmin - 1. * pow(tmin, 2)) +
4264 s * (-4. * s * tmax - 2. * pow(tmax, 2) + 4. * s * tmin +
4265 2. * pow(tmin, 2))))) /
4268 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) - 2. * s) -
4269 2. * pow(m_rho, 2) * s + pow(s, 2))));
4277 const double m_rho) {
4278 const double spin_deg_factor = 3.0;
4290 const double diff_xs =
4291 (0.0024867959858108648 * pow(
Const, 2) * pow(g_POR, 4) *
4293 pow(
pion_mass, 4) * (pow(m_rho, 4) + 4 * pow(s, 2) - 2 * s * t) +
4294 pow(s, 2) * (pow(m_rho, 4) + pow(s, 2) + 2 * s * t + 2 * pow(t, 2) -
4295 2 * pow(m_rho, 2) * (s + t)) -
4297 (pow(m_rho, 4) + 2 * s * (s + t) - pow(m_rho, 2) * (2 * s + t)))) /
4299 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
4300 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s))));
4309 const double s,
const double m_rho) {
4317 const double &tmin = t_mandelstam[1];
4318 const double &tmax = t_mandelstam[0];
4319 const double spin_deg_factor = 3.0;
4323 (0.0024868 * pow(
Const, 2) * pow(g_POR, 4) *
4328 (pow(m_rho, 4) + pow(
pion_mass, 2) * s - pow(m_rho, 2) * s) +
4330 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s) -
4331 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) /
4336 4 * pow(
omega_mass, 2) * pow(m_rho, 2) * tmax +
4337 4 * pow(
pion_mass, 2) * pow(m_rho, 2) * tmax + pow(m_rho, 4) * tmax +
4339 2 * pow(m_rho, 2) * s * tmax + 2 * pow(s, 2) * tmax +
4341 2 * pow(
pion_mass, 2) * pow(tmax, 2) - pow(m_rho, 2) * pow(tmax, 2) +
4342 s * pow(tmax, 2) + pow(tmax, 3) / 3. -
4347 (pow(m_rho, 4) + pow(
pion_mass, 2) * s - pow(m_rho, 2) * s) +
4349 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s) -
4350 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) /
4355 4 * pow(
omega_mass, 2) * pow(m_rho, 2) * tmin -
4356 4 * pow(
pion_mass, 2) * pow(m_rho, 2) * tmin - pow(m_rho, 4) * tmin -
4358 2 * pow(m_rho, 2) * s * tmin - 2 * pow(s, 2) * tmin -
4360 2 * pow(
pion_mass, 2) * pow(tmin, 2) + pow(m_rho, 2) * pow(tmin, 2) -
4361 s * pow(tmin, 2) - pow(tmin, 3) / 3. +
4365 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) -
4367 (pow(m_rho, 4) + pow(
pion_mass, 2) * s - pow(m_rho, 2) * s) +
4369 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s) -
4370 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) *
4375 (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s) -
4377 (pow(m_rho, 4) + pow(
pion_mass, 2) * s - pow(m_rho, 2) * s) +
4379 4 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s) -
4380 2 * pow(m_rho, 2) * s + 2 * pow(s, 2))) *
4382 ((pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
4383 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)));
4391 const double m_rho) {
4392 const double spin_deg_factor = 3.0;
4397 const double diff_xs =
4398 (0.0024867959858108648 * pow(
Const, 2) * pow(g_POR, 4) *
4400 pow(
pion_mass, 4) * (pow(m_rho, 4) - 2 * (s - 2 * t) * t) +
4401 pow(t, 2) * (pow(m_rho, 4) + 2 * pow(s, 2) + 2 * s * t + pow(t, 2) -
4402 2 * pow(m_rho, 2) * (s + t)) -
4404 (pow(m_rho, 4) + 2 * t * (s + t) - pow(m_rho, 2) * (s + 2 * t)))) /
4405 ((pow(
pion_mass, 4) + pow(pow(m_rho, 2) - s, 2) -
4406 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + s)) *
4422 const double s,
const double m_rho) {
4423 return cut_off(xs_pi0_rho_pi_rho_mediated(s, m_rho) +
4424 xs_pi0_rho_pi_omega_mediated(s, m_rho));
4429 const double s,
const double m_rho) {
4430 return cut_off(xs_pi_rho_pi0_rho_mediated(s, m_rho) +
4431 xs_pi_rho_pi0_omega_mediated(s, m_rho));
4440 const double s,
const double m_rho) {
4447 const double s_sqrt = sqrt(s);
4448 const double spin_deg_factor = 1.0;
4451 double tmax = mandelstam_t[0];
4452 double tmin = mandelstam_t[1];
4456 (-(pow(
Const, 2) * pow(ghat, 4) *
4458 (0.03125 * pow(eta1 - 1. * eta2, 2) *
4460 (-2. * pow(a1_mass, 8) - 2. * pow(
pion_mass, 8) +
4461 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
4462 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
4464 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) -
4465 4. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s) +
4467 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
4468 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
4471 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
4472 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
4473 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
4475 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
4477 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
4478 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
4479 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
4482 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4483 pow(
pion_mass, 4) * (6. * pow(m_rho, 2) + 2. * s))) +
4485 (1. * pow(a1_mass, 8) +
4487 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
4489 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
4490 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
4491 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
4494 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4495 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
4496 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s)) +
4499 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
4500 2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s +
4502 (1. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s))))) /
4503 (1. * pow(a1_mass, 2) - 1. * tmin) +
4504 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
4505 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
4507 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
4508 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
4509 (1. * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 1. * s -
4511 (0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) * tmin) /
4513 0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
4514 (-0.5 * eta2 * pow(a1_mass, 2) + 1. * eta1 * pow(
pion_mass, 2) +
4515 0.5 * eta2 * pow(m_rho, 2) + 0.5 * eta1 * s - 1. * eta2 * s) *
4519 (12. + 1. * pow(delta, 2) - 16. * C4 * pow(m_rho, 2) +
4520 delta * (-8. + 8. * C4 * pow(m_rho, 2))) +
4521 (-4. - 3. * pow(delta, 2) - 16. * C4 * pow(m_rho, 2) +
4522 delta * (8. + 8. * C4 * pow(m_rho, 2))) *
4526 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
4527 (eta2 * (pow(a1_mass, 2) - 1. * s) +
4530 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
4532 (-1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * s) +
4535 0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
4536 (eta1 * (1. * pow(
pion_mass, 2) - 0.5 * s) +
4537 eta2 * (-0.5 * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
4538 0.5 * pow(m_rho, 2) + 1. * s)) *
4540 (0.25 * (-2. + 1. * delta) *
4541 (-8. * C4 * pow(m_rho, 4) +
4542 pow(
pion_mass, 2) * (2. + 1. * delta - 8. * C4 * pow(m_rho, 2)) +
4543 (-2. - 3. * delta) * s +
4544 pow(m_rho, 2) * (2. + 1. * delta + 16. * C4 * s)) *
4548 (32 * pow(C4, 2) * pow(m_rho, 8) + 2 * pow(delta, 2) * pow(s, 2) +
4549 8 * C4 * pow(m_rho, 6) * (-6 + delta - 8 * C4 * s) +
4550 2 * delta * pow(m_rho, 2) * s * (-6 + delta - 8 * C4 * s) +
4551 pow(m_rho, 4) * (12 - pow(delta, 2) + 8 * C4 * (6 + delta) * s +
4552 32 * pow(C4, 2) * pow(s, 2))) *
4555 (1. * (1. * eta1 - 1. * eta2) *
4557 (0.75 * pow(m_rho, 4) - 0.125 * delta * pow(m_rho, 4) -
4558 1. * C4 * pow(m_rho, 6) +
4560 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
4562 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4)) -
4563 0.25 * pow(m_rho, 2) * s - 0.375 * delta * pow(m_rho, 2) * s +
4564 2. * C4 * pow(m_rho, 4) * s + 0.25 * delta * pow(s, 2) -
4565 1. * C4 * pow(m_rho, 2) * pow(s, 2)) +
4566 eta1 * (0.5 * pow(m_rho, 4) - 1. * C4 * pow(m_rho, 6) +
4568 (1. * pow(m_rho, 2) - 2. * C4 * pow(m_rho, 4)) +
4570 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
4571 0.25 * delta * pow(s, 2) +
4572 1. * C4 * pow(m_rho, 2) * pow(s, 2))) *
4575 0.0625 * pow(eta1 - 1. * eta2, 2) *
4576 (pow(eta2, 2) * (pow(Gammaa1, 2) * pow(a1_mass, 2) -
4577 1. * pow(a1_mass, 4) - 2. * pow(
pion_mass, 4) -
4578 2. * pow(
pion_mass, 2) * pow(m_rho, 2) +
4579 2. * pow(m_rho, 4) +
4580 pow(a1_mass, 2) * (2. * pow(
pion_mass, 2) +
4581 pow(m_rho, 2) - 1. * s) -
4582 3. * pow(m_rho, 2) * s + pow(s, 2)) +
4583 pow(eta1, 2) * (pow(Gammaa1, 2) * pow(a1_mass, 2) -
4584 1. * pow(a1_mass, 4) - 2. * pow(
pion_mass, 4) -
4585 2. * pow(
pion_mass, 2) * pow(m_rho, 2) +
4586 pow(a1_mass, 2) * (2. * pow(
pion_mass, 2) +
4587 pow(m_rho, 2) - 1. * s) +
4588 pow(m_rho, 2) * s + pow(s, 2)) +
4590 (-2. * pow(Gammaa1, 2) * pow(a1_mass, 2) +
4591 2. * pow(a1_mass, 4) + 4. * pow(
pion_mass, 4) +
4592 4. * pow(
pion_mass, 2) * pow(m_rho, 2) +
4593 2. * pow(m_rho, 4) - 2. * pow(s, 2) +
4594 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
4595 2. * pow(m_rho, 2) + 2. * s))) *
4597 0.03125 * pow(eta1 - 1. * eta2, 2) *
4599 (-6. * pow(a1_mass, 4) - 12. * pow(
pion_mass, 4) +
4600 2. * pow(m_rho, 4) +
4601 pow(a1_mass, 2) * (16. * pow(
pion_mass, 2) - 8. * s) +
4602 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
4605 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
4607 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
4608 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4609 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) -
4610 4. * pow(m_rho, 2) + 4. * s)) +
4612 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
4614 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
4615 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4616 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) +
4617 4. * pow(m_rho, 2) + 4. * s))) *
4619 (0.125 * (-2. + 1. * delta) *
4620 (2. + 1. * delta - 8. * C4 * pow(m_rho, 2)) * pow(tmin, 2)) /
4622 0.5 * pow(1. * eta1 - 1. * eta2, 2) *
4623 (-0.5 + 1. * C4 * pow(m_rho, 2)) * pow(tmin, 2) -
4625 (0.5 - 0.125 * pow(delta, 2) - 2. * C4 * pow(m_rho, 2) +
4626 1. * C4 * delta * pow(m_rho, 2)) *
4629 0.0625 * pow(1. * eta1 - 1. * eta2, 4) *
4630 (1. * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 0.5 * s) *
4632 0.03125 * pow(eta1 - 1. * eta2, 3) *
4633 (eta2 * (-1. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
4634 1. * pow(m_rho, 2) - 1. * s) +
4635 eta1 * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
4636 1. * pow(m_rho, 2) + s)) *
4638 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) * pow(tmin, 3) -
4639 0.020833333333333332 * pow(1. * eta1 - 1. * eta2, 4) * pow(tmin, 3) +
4640 0.03125 * pow(eta1 - 1. * eta2, 2) *
4642 (2. * pow(Gammaa1, 2) * pow(a1_mass, 2) -
4643 6. * pow(a1_mass, 4) - 4. * pow(
pion_mass, 4) +
4644 2. * pow(m_rho, 4) +
4645 pow(a1_mass, 2) * (8. * pow(
pion_mass, 2) - 8. * s) +
4646 4. * pow(m_rho, 2) * s - 4. * pow(s, 2)) +
4648 (-1. * pow(Gammaa1, 2) * pow(a1_mass, 2) +
4649 3. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) +
4650 2. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
4651 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4652 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
4653 4. * pow(m_rho, 2) + 4. * s)) +
4655 (-1. * pow(Gammaa1, 2) * pow(a1_mass, 2) +
4656 3. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) -
4657 2. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
4658 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4659 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) +
4660 4. * pow(m_rho, 2) + 4. * s))) *
4661 (-1. * pow(m_rho, 2) + s + tmin) -
4662 0.03125 * pow(eta1 - 1. * eta2, 3) *
4663 (eta2 * (-1. * pow(a1_mass, 2) - 1. * pow(m_rho, 2) - 1. * s) +
4664 eta1 * (pow(a1_mass, 2) - 1. * pow(m_rho, 2) + s)) *
4665 pow(-1. * pow(m_rho, 2) + s + tmin, 2) +
4666 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) *
4667 pow(-1. * pow(m_rho, 2) + s + tmin, 3) +
4668 0.25 * (eta1 - 1. * eta2) * (1. * eta1 - 1. * eta2) *
4669 (-1. + 2. * C4 * pow(m_rho, 2)) *
4670 pow(pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
4671 1. * pow(m_rho, 2) + s + tmin,
4673 (2. * (1. * eta1 - 1. * eta2) *
4674 (eta2 * (0.375 * pow(m_rho, 4) - 0.0625 * delta * pow(m_rho, 4) -
4675 0.5 * C4 * pow(m_rho, 6) +
4677 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
4679 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
4680 0.125 * pow(m_rho, 2) * s -
4681 0.1875 * delta * pow(m_rho, 2) * s +
4682 1. * C4 * pow(m_rho, 4) * s + 0.125 * delta * pow(s, 2) -
4683 0.5 * C4 * pow(m_rho, 2) * pow(s, 2)) +
4684 eta1 * (0.25 * pow(m_rho, 4) - 0.5 * C4 * pow(m_rho, 6) +
4686 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
4688 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
4689 0.125 * delta * pow(s, 2) +
4690 0.5 * C4 * pow(m_rho, 2) * pow(s, 2))) *
4691 (1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
4692 1. * s + 1. * tmin)) /
4694 (2. * (1. * eta1 - 1. * eta2) * Gammaa1 * a1_mass *
4695 (eta2 * (0.375 * pow(m_rho, 4) - 0.0625 * delta * pow(m_rho, 4) -
4696 0.5 * C4 * pow(m_rho, 6) +
4698 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
4700 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
4701 0.125 * pow(m_rho, 2) * s -
4702 0.1875 * delta * pow(m_rho, 2) * s +
4703 1. * C4 * pow(m_rho, 4) * s + 0.125 * delta * pow(s, 2) -
4704 0.5 * C4 * pow(m_rho, 2) * pow(s, 2)) +
4705 eta1 * (0.25 * pow(m_rho, 4) - 0.5 * C4 * pow(m_rho, 6) +
4707 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
4709 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
4710 0.125 * delta * pow(s, 2) +
4711 0.5 * C4 * pow(m_rho, 2) * pow(s, 2))) *
4712 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
4714 (Gammaa1 * a1_mass))) /
4716 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) * Gammaa1 * a1_mass *
4718 (-1. * pow(a1_mass, 6) +
4719 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4720 (-1. * pow(a1_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
4722 (2. * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
4723 pow(
pion_mass, 4) * (-1.5 * pow(m_rho, 2) + 1. * s) +
4725 (-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + 2. * s)) +
4726 eta1 * (pow(Gammaa1, 2) * pow(a1_mass, 2) *
4728 pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
4732 (1. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
4733 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 1.5 * s) +
4734 1. * pow(m_rho, 2) * s))) *
4735 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
4737 (Gammaa1 * a1_mass))) /
4738 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
4740 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) * Gammaa1 * a1_mass *
4742 (-1. * pow(a1_mass, 6) -
4743 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
4744 1. * pow(
pion_mass, 2) * pow(m_rho, 4) +
4746 (2. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) - 1.5 * s) +
4748 3. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4749 0.5 * pow(m_rho, 4) * s - 2. * pow(
pion_mass, 2) * pow(s, 2) -
4750 1. * pow(m_rho, 2) * pow(s, 2) + 0.5 * pow(s, 3) +
4752 (-1. * pow(a1_mass, 4) + 0.5 * pow(a1_mass, 2) * s) +
4754 (-1. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
4755 1. * pow(m_rho, 2) * s +
4756 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 1. * s))) +
4759 4. * pow(
pion_mass, 4) * pow(m_rho, 2) +
4760 1. * pow(
pion_mass, 2) * pow(m_rho, 4) +
4761 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4763 pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) - 0.5 * s) -
4765 4. * pow(
pion_mass, 2) * pow(m_rho, 2) * s -
4766 0.5 * pow(m_rho, 4) * s + 3. * pow(
pion_mass, 2) * pow(s, 2) +
4767 1. * pow(m_rho, 2) * pow(s, 2) - 0.5 * pow(s, 3) +
4770 (1. * pow(m_rho, 2) - 1. * s) * s +
4771 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 3. * s)))) *
4772 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
4774 (Gammaa1 * a1_mass))) /
4775 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
4777 pow(m_rho, 4) - 2. * pow(
pion_mass, 2) * s -
4778 2. * pow(m_rho, 2) * s + pow(s, 2) +
4780 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s)) +
4781 (0.03125 * pow(eta1 - 1. * eta2, 2) *
4783 (pow(Gammaa1, 4) * pow(a1_mass, 4) + pow(a1_mass, 8) +
4787 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
4789 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
4790 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
4791 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
4794 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4795 pow(
pion_mass, 4) * (6. * pow(m_rho, 2) + 2. * s)) +
4796 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4797 (-6. * pow(a1_mass, 4) - 6. * pow(
pion_mass, 4) -
4798 1. * pow(m_rho, 4) +
4799 pow(a1_mass, 2) * (12. * pow(
pion_mass, 2) -
4800 6. * pow(m_rho, 2) - 6. * s) +
4801 2. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
4802 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) + 4. * s))) +
4804 (-2. * pow(Gammaa1, 4) * pow(a1_mass, 4) -
4805 2. * pow(a1_mass, 8) - 2. * pow(
pion_mass, 8) +
4806 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
4807 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
4809 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) -
4810 4. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s) +
4812 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
4813 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
4815 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4816 (12. * pow(a1_mass, 4) + 12. * pow(
pion_mass, 4) -
4817 2. * pow(m_rho, 4) - 8. * pow(
pion_mass, 2) * s -
4818 4. * pow(m_rho, 2) * s + 4. * pow(s, 2) +
4819 pow(a1_mass, 2) * (-24. * pow(
pion_mass, 2) + 12. * s))) +
4821 (pow(Gammaa1, 4) * pow(a1_mass, 4) + pow(a1_mass, 8) +
4823 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
4825 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
4826 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
4827 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
4830 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4831 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
4832 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s)) +
4833 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4834 (-6. * pow(a1_mass, 4) - 6. * pow(
pion_mass, 4) -
4835 1. * pow(m_rho, 4) +
4836 pow(a1_mass, 2) * (12. * pow(
pion_mass, 2) +
4837 6. * pow(m_rho, 2) - 6. * s) +
4838 4. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
4839 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 4. * s)) +
4842 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
4843 2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s +
4845 (pow(m_rho, 4) - 2. * pow(m_rho, 2) * s)))) *
4846 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
4848 (Gammaa1 * a1_mass))) /
4849 (Gammaa1 * a1_mass) -
4850 (0.0625 * pow(eta1 - 1. * eta2, 2) * Gammaa1 * a1_mass *
4852 (-2. * pow(Gammaa1, 4) * pow(a1_mass, 4) +
4853 14. * pow(a1_mass, 8) + 14. * pow(
pion_mass, 8) +
4854 28. * pow(
pion_mass, 6) * pow(m_rho, 2) +
4855 20. * pow(
pion_mass, 4) * pow(m_rho, 4) +
4856 10. * pow(
pion_mass, 2) * pow(m_rho, 6) + 2. * pow(m_rho, 8) -
4858 16. * pow(
pion_mass, 4) * pow(m_rho, 2) * s -
4859 12. * pow(
pion_mass, 2) * pow(m_rho, 4) * s -
4860 4. * pow(m_rho, 6) * s - 4. * pow(
pion_mass, 4) * pow(s, 2) -
4861 6. * pow(
pion_mass, 2) * pow(m_rho, 2) * pow(s, 2) +
4863 4. * pow(m_rho, 2) * pow(s, 3) - 2. * pow(s, 4) +
4864 pow(a1_mass, 6) * (-56. * pow(
pion_mass, 2) -
4865 28. * pow(m_rho, 2) + 28. * s) +
4867 (84. * pow(
pion_mass, 4) + 24. * pow(m_rho, 4) +
4868 pow(
pion_mass, 2) * (84. * pow(m_rho, 2) - 72. * s) -
4869 36. * pow(m_rho, 2) * s + 12. * pow(s, 2)) +
4870 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4871 (-4. * pow(a1_mass, 4) - 4. * pow(
pion_mass, 4) +
4872 pow(a1_mass, 2) * (8. * pow(
pion_mass, 2) +
4873 4. * pow(m_rho, 2) - 4. * s) +
4874 (4. * pow(m_rho, 2) - 4. * s) * s +
4875 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s)) +
4877 (-56. * pow(
pion_mass, 6) - 10. * pow(m_rho, 6) +
4878 18. * pow(m_rho, 4) * s - 6. * pow(m_rho, 2) * pow(s, 2) -
4880 pow(
pion_mass, 4) * (-84. * pow(m_rho, 2) + 60. * s) +
4882 (-48. * pow(m_rho, 4) + 60. * pow(m_rho, 2) * s -
4883 12. * pow(s, 2)))) +
4885 (1. * pow(Gammaa1, 4) * pow(a1_mass, 4) - 7. * pow(a1_mass, 8) -
4887 14. * pow(
pion_mass, 6) * pow(m_rho, 2) -
4888 7. * pow(
pion_mass, 4) * pow(m_rho, 4) -
4889 2. * pow(
pion_mass, 2) * pow(m_rho, 6) +
4891 (28. * pow(
pion_mass, 2) + 14. * pow(m_rho, 2) - 14. * s) +
4893 11. * pow(
pion_mass, 4) * pow(m_rho, 2) * s +
4894 6. * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
4895 1. * pow(m_rho, 6) * s + 2. * pow(
pion_mass, 4) * pow(s, 2) -
4896 1. * pow(m_rho, 4) * pow(s, 2) -
4898 1. * pow(m_rho, 2) * pow(s, 3) + 1. * pow(s, 4) +
4899 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4900 (2. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) +
4901 1. * pow(m_rho, 4) +
4902 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 4. * s) -
4903 1. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4904 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
4905 2. * pow(m_rho, 2) + 2. * s)) +
4907 (-42. * pow(
pion_mass, 4) - 9. * pow(m_rho, 4) +
4908 21. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
4909 pow(
pion_mass, 2) * (-42. * pow(m_rho, 2) + 36. * s)) +
4911 (28. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) +
4912 pow(
pion_mass, 4) * (42. * pow(m_rho, 2) - 30. * s) -
4913 9. * pow(m_rho, 4) * s + 6. * pow(m_rho, 2) * pow(s, 2) +
4916 (18. * pow(m_rho, 4) - 36. * pow(m_rho, 2) * s +
4919 (1. * pow(Gammaa1, 4) * pow(a1_mass, 4) - 7. * pow(a1_mass, 8) -
4921 14. * pow(
pion_mass, 6) * pow(m_rho, 2) -
4922 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
4923 6. * pow(
pion_mass, 2) * pow(m_rho, 6) + 2. * pow(m_rho, 8) +
4925 (28. * pow(
pion_mass, 2) + 14. * pow(m_rho, 2) - 14. * s) +
4927 1. * pow(
pion_mass, 4) * pow(m_rho, 2) * s -
4928 16. * pow(
pion_mass, 2) * pow(m_rho, 4) * s -
4929 7. * pow(m_rho, 6) * s + 2. * pow(
pion_mass, 4) * pow(s, 2) +
4930 14. * pow(
pion_mass, 2) * pow(m_rho, 2) * pow(s, 2) +
4931 9. * pow(m_rho, 4) * pow(s, 2) -
4933 5. * pow(m_rho, 2) * pow(s, 3) + 1. * pow(s, 4) +
4934 pow(Gammaa1, 2) * pow(a1_mass, 2) *
4935 (2. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) +
4936 3. * pow(m_rho, 4) +
4937 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 4. * s) -
4938 5. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
4939 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
4940 2. * pow(m_rho, 2) + 2. * s)) +
4942 (-42. * pow(
pion_mass, 4) - 3. * pow(m_rho, 4) +
4943 9. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
4944 pow(
pion_mass, 2) * (-42. * pow(m_rho, 2) + 36. * s)) +
4946 (28. * pow(
pion_mass, 6) - 4. * pow(m_rho, 6) +
4947 pow(
pion_mass, 4) * (42. * pow(m_rho, 2) - 30. * s) +
4948 9. * pow(m_rho, 4) * s - 6. * pow(m_rho, 2) * pow(s, 2) +
4951 (6. * pow(m_rho, 4) - 12. * pow(m_rho, 2) * s +
4952 6. * pow(s, 2))))) *
4953 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
4955 (Gammaa1 * a1_mass))) /
4956 (pow(Gammaa1, 2) * pow(a1_mass, 2) + 4. * pow(a1_mass, 4) +
4958 pow(m_rho, 4) - 4. * pow(
pion_mass, 2) * s -
4959 2. * pow(m_rho, 2) * s + pow(s, 2) +
4961 (-8. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 4. * s)) +
4962 0.0625 * pow(eta1 - 1. * eta2, 2) *
4964 (-4. * pow(a1_mass, 6) +
4965 pow(a1_mass, 4) * (12. * pow(
pion_mass, 2) - 6. * s) +
4967 (4. * pow(
pion_mass, 4) - 4. * pow(m_rho, 4) -
4968 2. * pow(
pion_mass, 2) * s + 2. * pow(m_rho, 2) * s) +
4970 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
4971 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
4974 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) +
4976 pow(m_rho, 2) * (pow(m_rho, 2) - 1. * s) * s +
4977 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) + s) +
4978 pow(a1_mass, 4) * (-6. * pow(
pion_mass, 2) -
4979 3. * pow(m_rho, 2) + 3. * s) +
4981 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
4982 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
4983 4. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
4985 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) -
4986 1. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
4987 pow(
pion_mass, 4) * (3. * pow(m_rho, 2) + s) +
4988 pow(a1_mass, 4) * (-6. * pow(
pion_mass, 2) +
4989 3. * pow(m_rho, 2) + 3. * s) +
4991 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
4992 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
4993 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)))) *
4994 log(abs(-1. * pow(a1_mass, 2) + tmin)) -
4995 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
4997 (-0.5 * pow(a1_mass, 6) - 0.5 * pow(
pion_mass, 6) +
4998 0.5 * pow(
pion_mass, 4) * pow(m_rho, 2) +
5000 (0.5 * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
5002 (0.5 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 1. * s)) +
5003 eta1 * (pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
5005 (1. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
5006 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 0.5 * s) -
5007 0.5 * pow(m_rho, 2) * s) +
5009 (-2. * pow(
pion_mass, 4) - 0.5 * pow(m_rho, 2) * s +
5010 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
5011 log(abs(-1. * pow(a1_mass, 2) + tmin))) /
5012 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
5013 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
5014 (eta2 * (-0.5 * pow(a1_mass, 6) - 0.5 * pow(
pion_mass, 6) +
5016 (0.5 * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2)) +
5017 pow(
pion_mass, 4) * (0.5 * pow(m_rho, 2) - 1. * s) +
5018 pow(
pion_mass, 2) * (-0.5 * pow(m_rho, 2) + 0.5 * s) * s +
5021 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
5022 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s)) +
5024 pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) - 0.5 * s) +
5025 pow(
pion_mass, 2) * (1.5 * pow(m_rho, 2) - 2. * s) * s +
5026 (-0.5 * pow(m_rho, 2) + 0.5 * s) * pow(s, 2) +
5027 pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 1.5 * s) +
5029 (-2. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 2) * s +
5030 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
5031 log(abs(-1. * pow(a1_mass, 2) + tmin))) /
5032 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
5033 1. * pow(m_rho, 2) + 1. * s) -
5034 (0.03125 * pow(eta1 - 1. * eta2, 2) *
5035 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
5036 0.5 * pow(m_rho, 2) + 0.5 * s) *
5038 (-2. * pow(a1_mass, 8) +
5040 (8. * pow(
pion_mass, 2) + 4. * pow(m_rho, 2) - 4. * s) +
5042 (-12. * pow(
pion_mass, 4) - 4. * pow(m_rho, 4) +
5043 4. * pow(m_rho, 2) * s +
5044 pow(
pion_mass, 2) * (-12. * pow(m_rho, 2) + 8. * s)) +
5047 4. * pow(
pion_mass, 4) * pow(m_rho, 2) -
5048 2. * pow(m_rho, 6) + 4. * pow(m_rho, 4) * s -
5049 2. * pow(m_rho, 2) * pow(s, 2) +
5051 (-8. * pow(m_rho, 4) + 8. * pow(m_rho, 2) * s)) +
5053 (8. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) +
5054 pow(
pion_mass, 4) * (12. * pow(m_rho, 2) - 4. * s) -
5055 2. * pow(m_rho, 4) * s - 2. * pow(m_rho, 2) * pow(s, 2) +
5058 (8. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s -
5063 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
5065 2. * pow(
pion_mass, 2) * pow(m_rho, 2) +
5066 pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
5068 (6. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
5069 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) +
5070 pow(m_rho, 2) * s) +
5072 (-4. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) -
5073 5. * pow(m_rho, 4) * s + 4. * pow(m_rho, 2) * pow(s, 2) -
5075 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s) +
5077 (2. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
5081 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
5083 (-2. * pow(m_rho, 2) + 2. * s) +
5085 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
5087 (3. * pow(m_rho, 4) - 5. * pow(m_rho, 2) * s) +
5089 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
5090 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
5091 3. * pow(m_rho, 2) * s) +
5093 (-4. * pow(
pion_mass, 6) + pow(m_rho, 4) * s -
5095 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s) +
5097 (-2. * pow(m_rho, 4) + 4. * pow(m_rho, 2) * s +
5098 2. * pow(s, 2))))) *
5099 log(abs(-1. * pow(a1_mass, 2) + tmin))) /
5100 (0.25 * pow(Gammaa1, 2) * pow(a1_mass, 2) + 1. * pow(a1_mass, 4) +
5102 0.25 * pow(m_rho, 4) - 1. * pow(
pion_mass, 2) * s -
5103 0.5 * pow(m_rho, 2) * s + 0.25 * pow(s, 2) +
5105 (-2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + 1. * s)) -
5106 (1. * (1. * eta1 - 1. * eta2) *
5109 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
5111 (pow(
pion_mass, 2) * (0.5 - 1. * C4 * pow(m_rho, 2)) +
5112 (-0.25 + 0.125 * delta) * (pow(m_rho, 2) + s)) +
5114 (-1. * C4 * pow(m_rho, 6) +
5116 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4)) +
5117 0.25 * delta * pow(s, 2) +
5119 (-0.25 - 0.375 * delta - 1. * C4 * s) +
5120 pow(m_rho, 4) * (0.75 - 0.125 * delta + 2. * C4 * s))) +
5123 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) +
5125 (0.5 * pow(m_rho, 4) - 1. * C4 * pow(m_rho, 6) +
5127 (1. * pow(m_rho, 2) - 2. * C4 * pow(m_rho, 4)) -
5128 0.25 * delta * pow(s, 2) +
5129 1. * C4 * pow(m_rho, 2) * pow(s, 2)) +
5131 (pow(
pion_mass, 4) * (-0.5 + 1. * C4 * pow(m_rho, 2)) +
5132 s * ((0.25 - 0.125 * delta) * pow(m_rho, 2) +
5133 (-0.25 + 0.125 * delta) * s) +
5135 (2. * C4 * pow(m_rho, 4) + (0.5 + 0.25 * delta) * s +
5136 pow(m_rho, 2) * (-1. - 2. * C4 * s))))) *
5137 log(abs(-1. * pow(a1_mass, 2) + tmin))) /
5139 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
5140 log(abs(-1. * pow(
pion_mass, 2) + tmin)) +
5143 8.000000000000002 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
5145 5.999999999999999 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 2) *
5147 1. * pow(2. - 1. * delta, 2) * pow(m_rho, 2) * pow(s, 2)) *
5148 log(abs(-1. * pow(
pion_mass, 2) + tmin))) /
5149 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
5150 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) * pow(
pion_mass, 2) *
5151 (0. + eta2 * pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) +
5152 eta1 * (2. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s +
5153 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s))) *
5154 log(abs(-1. * pow(
pion_mass, 2) + tmin))) /
5155 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
5156 (2. * (-2. + 1. * delta) *
5157 (0. + (-0.25 + 0.125 * delta) * pow(m_rho, 2) * s +
5158 pow(
pion_mass, 2) * (-2. * C4 * pow(m_rho, 4) - 0.5 * delta * s +
5159 pow(m_rho, 2) * (1. + 2. * C4 * s))) *
5160 log(abs(-1. * pow(
pion_mass, 2) + tmin))) /
5162 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) * pow(
pion_mass, 2) *
5163 (eta1 * (pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 1. * s) +
5165 (pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
5166 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s) +
5168 (-1. * pow(m_rho, 4) + 2.5 * pow(m_rho, 2) * s -
5170 s * (0.5 * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
5172 eta2 * (0.5 * pow(m_rho, 6) +
5173 pow(
pion_mass, 4) * (1. * pow(m_rho, 2) - 1. * s) -
5174 1.5 * pow(m_rho, 4) * s + 1.5 * pow(m_rho, 2) * pow(s, 2) -
5177 (1.5 * pow(m_rho, 4) - 3. * pow(m_rho, 2) * s +
5180 (-0.5 * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s -
5182 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
5183 log(abs(-1. * pow(
pion_mass, 2) + tmin))) /
5184 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
5186 pow(m_rho, 4) - 2. * pow(
pion_mass, 2) * s -
5187 2. * pow(m_rho, 2) * s + pow(s, 2) +
5189 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s)) -
5190 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
5191 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s +
5193 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) *
5194 (eta2 * pow(
pion_mass, 6) * (1. * pow(m_rho, 2) - 1. * s) +
5195 eta2 * pow(a1_mass, 2) * pow(
pion_mass, 4) *
5196 (-1. * pow(m_rho, 2) + 1. * s) +
5197 eta1 * pow(a1_mass, 2) * pow(
pion_mass, 2) *
5198 (-0.5 * pow(m_rho, 4) +
5199 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
5200 0.5 * pow(m_rho, 2) * s) +
5202 (0.5 * pow(m_rho, 4) - 0.5 * pow(m_rho, 2) * s +
5203 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s))) *
5204 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s + tmin))) /
5205 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
5207 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) * pow(
pion_mass, 2) *
5208 (eta1 * (pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
5209 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s) +
5210 eta2 * (-0.5 * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s -
5212 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s))) *
5213 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s + tmin))) /
5214 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
5215 1. * pow(m_rho, 2) + 1. * s) -
5218 8.000000000000002 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
5220 1. * pow(2. - 1. * delta, 2) * pow(m_rho, 4) * s +
5222 (C4 * (32. - 16. * delta) * pow(m_rho, 6) +
5223 delta * (-8. + 4. * delta) * pow(s, 2) +
5225 (-8. + 24. * delta - 10. * pow(delta, 2) + 32. * C4 * s -
5226 16. * C4 * delta * s) +
5227 pow(m_rho, 4) * (-16. + 8. * delta - 64. * C4 * s +
5228 32. * C4 * delta * s))) *
5229 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s + tmin))) /
5230 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
5231 0.03125 * pow(eta1 - 1. * eta2, 2) *
5233 (4. * pow(a1_mass, 6) +
5234 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5235 (-4. * pow(a1_mass, 2) + 4. * pow(
pion_mass, 2) -
5237 pow(a1_mass, 4) * (-12. * pow(
pion_mass, 2) + 6. * s) +
5239 (-4. * pow(
pion_mass, 4) + 4. * pow(m_rho, 4) +
5240 2. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s) +
5242 (12. * pow(
pion_mass, 4) - 2. * pow(m_rho, 4) -
5243 8. * pow(
pion_mass, 2) * s - 4. * pow(m_rho, 2) * s +
5246 (-2. * pow(a1_mass, 6) + 2. * pow(
pion_mass, 6) +
5247 3. * pow(
pion_mass, 4) * pow(m_rho, 2) +
5249 (6. * pow(
pion_mass, 2) + 3. * pow(m_rho, 2) - 3. * s) -
5251 1. * pow(
pion_mass, 2) * pow(m_rho, 2) * s -
5252 1. * pow(m_rho, 4) * s + pow(m_rho, 2) * pow(s, 2) +
5253 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5254 (2. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
5255 1. * pow(m_rho, 2) + s) +
5257 (-6. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
5258 4. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
5259 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 4. * s))) +
5261 (-2. * pow(a1_mass, 6) + 2. * pow(
pion_mass, 6) -
5262 3. * pow(
pion_mass, 4) * pow(m_rho, 2) +
5264 (6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) - 3. * s) -
5267 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5268 (2. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) +
5269 pow(m_rho, 2) + s) +
5271 (-6. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
5272 2. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
5273 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) + 4. * s)))) *
5274 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
5275 4. * pow(a1_mass, 2) * pow(
pion_mass, 2) +
5277 2. * pow(a1_mass, 2) * (-1. * pow(m_rho, 2) + s + tmin) -
5279 (-1. * pow(m_rho, 2) + s + tmin) +
5280 pow(-1. * pow(m_rho, 2) + s + tmin, 2))) -
5281 (0.5 * (1. * eta1 - 1. * eta2) *
5282 (eta2 * (pow(Gammaa1, 2) * pow(a1_mass, 2) * pow(m_rho, 2) *
5283 (0.5 - 1. * C4 * pow(m_rho, 2)) +
5285 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) +
5287 (pow(
pion_mass, 2) * (-0.5 + 1. * C4 * pow(m_rho, 2)) +
5288 (0.25 - 0.125 * delta) * (pow(m_rho, 2) + s)) +
5290 (1. * C4 * pow(m_rho, 6) +
5292 (1. * pow(m_rho, 2) - 2. * C4 * pow(m_rho, 4)) -
5293 0.25 * delta * pow(s, 2) +
5294 pow(m_rho, 4) * (-0.75 + 0.125 * delta - 2. * C4 * s) +
5296 (0.25 + 0.375 * delta + 1. * C4 * s))) +
5297 eta1 * (pow(Gammaa1, 2) * pow(a1_mass, 2) * pow(m_rho, 2) *
5298 (-0.5 + 1. * C4 * pow(m_rho, 2)) +
5300 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
5302 (-0.5 * pow(m_rho, 4) + 1. * C4 * pow(m_rho, 6) +
5304 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4)) +
5305 0.25 * delta * pow(s, 2) -
5306 1. * C4 * pow(m_rho, 2) * pow(s, 2)) +
5308 (pow(
pion_mass, 4) * (0.5 - 1. * C4 * pow(m_rho, 2)) +
5309 s * ((-0.25 + 0.125 * delta) * pow(m_rho, 2) +
5310 (0.25 - 0.125 * delta) * s) +
5312 (-2. * C4 * pow(m_rho, 4) +
5313 (-0.5 - 0.25 * delta) * s +
5314 pow(m_rho, 2) * (1. + 2. * C4 * s))))) *
5315 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) +
5316 pow(pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
5317 1. * pow(m_rho, 2) + s + tmin,
5320 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
5322 (0.5 * pow(Gammaa1, 4) * pow(a1_mass, 4) -
5323 0.5 * pow(a1_mass, 8) + 0.5 * pow(
pion_mass, 8) +
5324 0.5 * pow(a1_mass, 4) * pow(
pion_mass, 2) * pow(m_rho, 2) -
5325 0.5 * pow(
pion_mass, 6) * pow(m_rho, 2) +
5328 (1. * pow(
pion_mass, 2) + 1.5 * pow(m_rho, 2) -
5330 pow(a1_mass, 4) * (-1. * pow(
pion_mass, 2) +
5331 0.5 * pow(m_rho, 2) - 1. * s)) +
5333 (1. * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
5335 (-1. * pow(
pion_mass, 2) - 0.5 * pow(m_rho, 2) + 1. * s)) +
5337 (pow(a1_mass, 6) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
5338 pow(a1_mass, 2) * (3. * pow(
pion_mass, 6) +
5339 1. * pow(
pion_mass, 2) * pow(m_rho, 4) -
5343 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 0.5 * s) -
5344 0.5 * pow(m_rho, 2) * s) +
5346 (-1. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
5347 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 0.5 * s) +
5348 0.5 * pow(m_rho, 2) * s) +
5349 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5351 pow(a1_mass, 2) * (1. * pow(
pion_mass, 2) + 0.5 * s) -
5352 0.5 * pow(m_rho, 2) * s +
5353 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1.5 * s)))) *
5354 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
5356 4. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
5357 4. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s +
5358 pow(s, 2) - 4. * pow(
pion_mass, 2) * tmin -
5359 2. * pow(m_rho, 2) * tmin + 2. * s * tmin + pow(tmin, 2) +
5361 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s +
5363 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
5365 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
5367 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
5368 pow(a1_mass, 6) * (1. * pow(
pion_mass, 2) - 0.5 * s) -
5370 4. * pow(
pion_mass, 4) * pow(m_rho, 2) * s -
5371 1.5 * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
5373 4. * pow(
pion_mass, 2) * pow(m_rho, 2) * pow(s, 2) +
5374 0.5 * pow(m_rho, 4) * pow(s, 2) -
5376 1. * pow(m_rho, 2) * pow(s, 3) + 0.5 * pow(s, 4) +
5377 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5379 pow(a1_mass, 2) * (1. * pow(
pion_mass, 2) - 0.5 * s) -
5380 0.5 * pow(
pion_mass, 2) * s + 0.5 * pow(s, 2)) +
5383 (1. * pow(m_rho, 2) - 0.5 * s) * s +
5384 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 2.5 * s)) +
5387 pow(
pion_mass, 4) * (2. * pow(m_rho, 2) - 1.5 * s) -
5388 0.5 * pow(m_rho, 4) * s + 0.5 * pow(s, 3) +
5390 (1. * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s -
5393 (0.5 * pow(Gammaa1, 4) * pow(a1_mass, 4) -
5394 0.5 * pow(a1_mass, 8) + 0.5 * pow(
pion_mass, 8) +
5396 (1. * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.5 * s) +
5398 pow(a1_mass, 4) * (-0.5 * pow(m_rho, 4) +
5399 (-0.5 * pow(
pion_mass, 2) + 0.5 * s) * s) +
5401 (-0.5 * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s -
5404 (0.5 * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
5406 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5407 (1. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 4) +
5408 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 1.5 * s) -
5409 1. * pow(m_rho, 2) * s + 0.5 * pow(s, 2) +
5410 pow(a1_mass, 2) * (-1. * pow(
pion_mass, 2) -
5411 1. * pow(m_rho, 2) + 1.5 * s)) +
5414 pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 0.5 * s) +
5416 (-1. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s -
5418 s * (0.5 * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
5419 0.5 * pow(s, 2))))) *
5420 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
5422 4. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
5423 4. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s +
5424 pow(s, 2) - 4. * pow(
pion_mass, 2) * tmin -
5425 2. * pow(m_rho, 2) * tmin + 2. * s * tmin + pow(tmin, 2) +
5427 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s +
5429 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
5431 pow(m_rho, 4) - 2. * pow(
pion_mass, 2) * s -
5432 2. * pow(m_rho, 2) * s + pow(s, 2) +
5434 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s)) -
5435 (0.0625 * pow(eta1 - 1. * eta2, 2) *
5437 (-1. * pow(a1_mass, 10) +
5439 (5. * pow(
pion_mass, 2) + 2.5 * pow(m_rho, 2) - 2.5 * s) +
5440 pow(Gammaa1, 4) * pow(a1_mass, 4) *
5441 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
5442 0.5 * pow(m_rho, 2) + 0.5 * s) +
5444 (10. * pow(
pion_mass, 6) - 2.5 * pow(m_rho, 6) +
5445 pow(
pion_mass, 4) * (15. * pow(m_rho, 2) - 9. * s) +
5446 6. * pow(m_rho, 4) * s - 4.5 * pow(m_rho, 2) * pow(s, 2) +
5450 (1. * pow(m_rho, 2) - 1. * s) * s +
5451 pow(
pion_mass, 2) * (-10. * pow(m_rho, 2) + 8. * s)) +
5453 (1. * pow(
pion_mass, 6) + 0.5 * pow(m_rho, 6) +
5454 pow(
pion_mass, 4) * (2.5 * pow(m_rho, 2) - 0.5 * s) -
5455 1. * pow(m_rho, 4) * s + 0.5 * pow(m_rho, 2) * pow(s, 2) +
5457 (2. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s)) +
5458 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5459 (4. * pow(a1_mass, 6) - 4. * pow(
pion_mass, 6) -
5460 0.5 * pow(m_rho, 6) + 1.5 * pow(m_rho, 4) * s -
5461 1.5 * pow(m_rho, 2) * pow(s, 2) + 0.5 * pow(s, 3) +
5462 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 6. * s) +
5463 pow(a1_mass, 4) * (-12. * pow(
pion_mass, 2) -
5464 6. * pow(m_rho, 2) + 6. * s) +
5466 (-3. * pow(m_rho, 4) + 6. * pow(m_rho, 2) * s -
5469 (12. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) +
5470 pow(
pion_mass, 2) * (12. * pow(m_rho, 2) - 12. * s) -
5471 6. * pow(m_rho, 2) * s + 3. * pow(s, 2))) +
5473 (-5. * pow(
pion_mass, 8) + 1. * pow(m_rho, 8) -
5474 3.5 * pow(m_rho, 6) * s +
5475 4.5 * pow(m_rho, 4) * pow(s, 2) -
5476 2.5 * pow(m_rho, 2) * pow(s, 3) + 0.5 * pow(s, 4) +
5477 pow(
pion_mass, 6) * (-10. * pow(m_rho, 2) + 4. * s) +
5479 (-2. * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s +
5482 (3. * pow(m_rho, 6) - 8. * pow(m_rho, 4) * s +
5483 7. * pow(m_rho, 2) * pow(s, 2) - 2. * pow(s, 3)))) +
5485 (-1. * pow(a1_mass, 10) +
5487 (5. * pow(
pion_mass, 2) + 2.5 * pow(m_rho, 2) - 2.5 * s) +
5488 pow(Gammaa1, 4) * pow(a1_mass, 4) *
5489 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
5490 0.5 * pow(m_rho, 2) + 0.5 * s) +
5492 (-10. * pow(
pion_mass, 4) - 2. * pow(m_rho, 4) +
5493 5. * pow(m_rho, 2) * s - 1. * pow(s, 2) +
5494 pow(
pion_mass, 2) * (-10. * pow(m_rho, 2) + 8. * s)) +
5496 (10. * pow(
pion_mass, 6) + 0.5 * pow(m_rho, 6) +
5497 pow(
pion_mass, 4) * (15. * pow(m_rho, 2) - 9. * s) -
5498 3. * pow(m_rho, 4) * s + 1.5 * pow(m_rho, 2) * pow(s, 2) +
5501 (6. * pow(m_rho, 4) - 12. * pow(m_rho, 2) * s)) +
5502 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5503 (4. * pow(a1_mass, 6) - 4. * pow(
pion_mass, 6) -
5504 0.5 * pow(m_rho, 6) + 1.5 * pow(m_rho, 4) * s -
5505 1.5 * pow(m_rho, 2) * pow(s, 2) + 0.5 * pow(s, 3) +
5506 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 6. * s) +
5507 pow(a1_mass, 4) * (-12. * pow(
pion_mass, 2) -
5508 6. * pow(m_rho, 2) + 6. * s) +
5510 (-3. * pow(m_rho, 4) + 6. * pow(m_rho, 2) * s -
5513 (12. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) +
5514 pow(
pion_mass, 2) * (12. * pow(m_rho, 2) - 12. * s) -
5515 6. * pow(m_rho, 2) * s + 3. * pow(s, 2))) +
5518 pow(
pion_mass, 6) * (2.5 * pow(m_rho, 2) - 0.5 * s) +
5520 (4. * pow(m_rho, 4) - 6. * pow(m_rho, 2) * s) +
5522 (-1. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s -
5525 (1.5 * pow(m_rho, 6) - 6. * pow(m_rho, 4) * s +
5526 4.5 * pow(m_rho, 2) * pow(s, 2))) +
5529 pow(
pion_mass, 6) * (-10. * pow(m_rho, 2) + 4. * s) +
5531 (-8. * pow(m_rho, 4) + 13. * pow(m_rho, 2) * s +
5534 (-1. * pow(m_rho, 6) + 6. * pow(m_rho, 4) * s -
5535 3. * pow(m_rho, 2) * pow(s, 2) - 2. * pow(s, 3)) +
5536 s * (0.5 * pow(m_rho, 6) - 0.5 * pow(m_rho, 4) * s -
5537 0.5 * pow(m_rho, 2) * pow(s, 2) +
5538 0.5 * pow(s, 3)))) +
5540 (2. * pow(a1_mass, 10) +
5541 pow(Gammaa1, 4) * pow(a1_mass, 4) *
5542 (-2. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) +
5543 1. * pow(m_rho, 2) - 1. * s) +
5545 (-10. * pow(
pion_mass, 2) - 5. * pow(m_rho, 2) + 5. * s) +
5547 (20. * pow(
pion_mass, 4) + 6. * pow(m_rho, 4) +
5548 pow(
pion_mass, 2) * (20. * pow(m_rho, 2) - 16. * s) -
5549 8. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
5551 (-20. * pow(
pion_mass, 6) - 4. * pow(m_rho, 6) +
5552 6. * pow(m_rho, 4) * s - 2. * pow(s, 3) +
5553 pow(
pion_mass, 4) * (-30. * pow(m_rho, 2) + 18. * s) +
5555 (-18. * pow(m_rho, 4) + 18. * pow(m_rho, 2) * s)) +
5557 (-2. * pow(
pion_mass, 8) - 1. * pow(m_rho, 8) +
5558 3. * pow(m_rho, 6) * s - 3. * pow(m_rho, 4) * pow(s, 2) +
5559 1. * pow(m_rho, 2) * pow(s, 3) +
5560 pow(
pion_mass, 6) * (-5. * pow(m_rho, 2) + 1. * s) +
5562 (-10. * pow(m_rho, 4) + 10. * pow(m_rho, 2) * s) +
5564 (-6. * pow(m_rho, 6) + 12. * pow(m_rho, 4) * s -
5565 6. * pow(m_rho, 2) * pow(s, 2))) +
5567 (10. * pow(
pion_mass, 8) + 1. * pow(m_rho, 8) +
5568 pow(
pion_mass, 6) * (20. * pow(m_rho, 2) - 8. * s) -
5569 2. * pow(m_rho, 6) * s + 2. * pow(m_rho, 2) * pow(s, 3) -
5572 (22. * pow(m_rho, 4) - 20. * pow(m_rho, 2) * s -
5575 (8. * pow(m_rho, 6) - 12. * pow(m_rho, 4) * s +
5577 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5578 (-8. * pow(a1_mass, 6) + 8. * pow(
pion_mass, 6) +
5579 1. * pow(m_rho, 6) +
5580 pow(
pion_mass, 4) * (12. * pow(m_rho, 2) - 12. * s) +
5581 pow(a1_mass, 4) * (24. * pow(
pion_mass, 2) +
5582 12. * pow(m_rho, 2) - 12. * s) -
5583 3. * pow(m_rho, 4) * s + 3. * pow(m_rho, 2) * pow(s, 2) -
5586 (6. * pow(m_rho, 4) - 12. * pow(m_rho, 2) * s +
5589 (-24. * pow(
pion_mass, 4) - 6. * pow(m_rho, 4) +
5590 12. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
5592 (-24. * pow(m_rho, 2) + 24. * s))))) *
5593 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
5595 4. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
5596 4. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s +
5597 pow(s, 2) - 4. * pow(
pion_mass, 2) * tmin -
5598 2. * pow(m_rho, 2) * tmin + 2. * s * tmin + pow(tmin, 2) +
5600 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s +
5602 (pow(Gammaa1, 2) * pow(a1_mass, 2) + 4. * pow(a1_mass, 4) +
5604 pow(m_rho, 4) - 4. * pow(
pion_mass, 2) * s -
5605 2. * pow(m_rho, 2) * s + pow(s, 2) +
5607 (-8. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 4. * s)))) /
5608 (16. * Pi * s * (-4 * pow(
pion_mass, 2) + s)) +
5609 (pow(
Const, 2) * pow(ghat, 4) *
5611 (0.03125 * pow(eta1 - 1. * eta2, 2) *
5613 (-2. * pow(a1_mass, 8) - 2. * pow(
pion_mass, 8) +
5614 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
5615 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
5617 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) -
5618 4. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s) +
5620 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
5621 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
5624 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
5625 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
5626 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
5628 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
5630 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
5631 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
5632 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
5635 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
5636 pow(
pion_mass, 4) * (6. * pow(m_rho, 2) + 2. * s))) +
5638 (1. * pow(a1_mass, 8) +
5640 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
5642 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
5643 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
5644 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
5647 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
5648 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
5649 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s)) +
5652 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
5653 2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s +
5655 (1. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s))))) /
5656 (1. * pow(a1_mass, 2) - 1. * tmax) +
5657 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
5658 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
5660 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
5661 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
5662 (1. * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 1. * s -
5664 (0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) * tmax) /
5666 0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
5667 (-0.5 * eta2 * pow(a1_mass, 2) + 1. * eta1 * pow(
pion_mass, 2) +
5668 0.5 * eta2 * pow(m_rho, 2) + 0.5 * eta1 * s - 1. * eta2 * s) *
5672 (12. + 1. * pow(delta, 2) - 16. * C4 * pow(m_rho, 2) +
5673 delta * (-8. + 8. * C4 * pow(m_rho, 2))) +
5674 (-4. - 3. * pow(delta, 2) - 16. * C4 * pow(m_rho, 2) +
5675 delta * (8. + 8. * C4 * pow(m_rho, 2))) *
5679 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
5680 (eta2 * (pow(a1_mass, 2) - 1. * s) +
5683 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
5684 (eta2 * (-1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * s) +
5687 0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
5688 (eta1 * (1. * pow(
pion_mass, 2) - 0.5 * s) +
5689 eta2 * (-0.5 * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
5690 0.5 * pow(m_rho, 2) + 1. * s)) *
5692 (0.25 * (-2. + 1. * delta) *
5693 (-8. * C4 * pow(m_rho, 4) +
5694 pow(
pion_mass, 2) * (2. + 1. * delta - 8. * C4 * pow(m_rho, 2)) +
5695 (-2. - 3. * delta) * s +
5696 pow(m_rho, 2) * (2. + 1. * delta + 16. * C4 * s)) *
5700 (32 * pow(C4, 2) * pow(m_rho, 8) + 2 * pow(delta, 2) * pow(s, 2) +
5701 8 * C4 * pow(m_rho, 6) * (-6 + delta - 8 * C4 * s) +
5702 2 * delta * pow(m_rho, 2) * s * (-6 + delta - 8 * C4 * s) +
5703 pow(m_rho, 4) * (12 - pow(delta, 2) + 8 * C4 * (6 + delta) * s +
5704 32 * pow(C4, 2) * pow(s, 2))) *
5707 (1. * (1. * eta1 - 1. * eta2) *
5709 (0.75 * pow(m_rho, 4) - 0.125 * delta * pow(m_rho, 4) -
5710 1. * C4 * pow(m_rho, 6) +
5712 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
5714 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4)) -
5715 0.25 * pow(m_rho, 2) * s - 0.375 * delta * pow(m_rho, 2) * s +
5716 2. * C4 * pow(m_rho, 4) * s + 0.25 * delta * pow(s, 2) -
5717 1. * C4 * pow(m_rho, 2) * pow(s, 2)) +
5718 eta1 * (0.5 * pow(m_rho, 4) - 1. * C4 * pow(m_rho, 6) +
5720 (1. * pow(m_rho, 2) - 2. * C4 * pow(m_rho, 4)) +
5722 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
5723 0.25 * delta * pow(s, 2) +
5724 1. * C4 * pow(m_rho, 2) * pow(s, 2))) *
5727 0.0625 * pow(eta1 - 1. * eta2, 2) *
5729 (pow(Gammaa1, 2) * pow(a1_mass, 2) - 1. * pow(a1_mass, 4) -
5731 2. * pow(
pion_mass, 2) * pow(m_rho, 2) + 2. * pow(m_rho, 4) +
5733 (2. * pow(
pion_mass, 2) + pow(m_rho, 2) - 1. * s) -
5734 3. * pow(m_rho, 2) * s + pow(s, 2)) +
5735 pow(eta1, 2) * (pow(Gammaa1, 2) * pow(a1_mass, 2) -
5736 1. * pow(a1_mass, 4) - 2. * pow(
pion_mass, 4) -
5737 2. * pow(
pion_mass, 2) * pow(m_rho, 2) +
5738 pow(a1_mass, 2) * (2. * pow(
pion_mass, 2) +
5739 pow(m_rho, 2) - 1. * s) +
5740 pow(m_rho, 2) * s + pow(s, 2)) +
5742 (-2. * pow(Gammaa1, 2) * pow(a1_mass, 2) +
5743 2. * pow(a1_mass, 4) + 4. * pow(
pion_mass, 4) +
5744 4. * pow(
pion_mass, 2) * pow(m_rho, 2) + 2. * pow(m_rho, 4) -
5746 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
5747 2. * pow(m_rho, 2) + 2. * s))) *
5749 0.03125 * pow(eta1 - 1. * eta2, 2) *
5751 (-6. * pow(a1_mass, 4) - 12. * pow(
pion_mass, 4) +
5752 2. * pow(m_rho, 4) +
5753 pow(a1_mass, 2) * (16. * pow(
pion_mass, 2) - 8. * s) +
5754 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
5757 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
5759 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
5760 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
5761 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) -
5762 4. * pow(m_rho, 2) + 4. * s)) +
5764 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
5766 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
5767 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
5768 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) +
5769 4. * pow(m_rho, 2) + 4. * s))) *
5771 (0.125 * (-2. + 1. * delta) *
5772 (2. + 1. * delta - 8. * C4 * pow(m_rho, 2)) * pow(tmax, 2)) /
5774 0.5 * pow(1. * eta1 - 1. * eta2, 2) *
5775 (-0.5 + 1. * C4 * pow(m_rho, 2)) * pow(tmax, 2) -
5777 (0.5 - 0.125 * pow(delta, 2) - 2. * C4 * pow(m_rho, 2) +
5778 1. * C4 * delta * pow(m_rho, 2)) *
5781 0.0625 * pow(1. * eta1 - 1. * eta2, 4) *
5782 (1. * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 0.5 * s) *
5784 0.03125 * pow(eta1 - 1. * eta2, 3) *
5785 (eta2 * (-1. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
5786 1. * pow(m_rho, 2) - 1. * s) +
5787 eta1 * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
5788 1. * pow(m_rho, 2) + s)) *
5790 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) * pow(tmax, 3) -
5791 0.020833333333333332 * pow(1. * eta1 - 1. * eta2, 4) * pow(tmax, 3) +
5792 0.03125 * pow(eta1 - 1. * eta2, 2) *
5794 (2. * pow(Gammaa1, 2) * pow(a1_mass, 2) -
5795 6. * pow(a1_mass, 4) - 4. * pow(
pion_mass, 4) +
5796 2. * pow(m_rho, 4) +
5797 pow(a1_mass, 2) * (8. * pow(
pion_mass, 2) - 8. * s) +
5798 4. * pow(m_rho, 2) * s - 4. * pow(s, 2)) +
5800 (-1. * pow(Gammaa1, 2) * pow(a1_mass, 2) +
5801 3. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) +
5802 2. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
5803 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
5804 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
5805 4. * pow(m_rho, 2) + 4. * s)) +
5807 (-1. * pow(Gammaa1, 2) * pow(a1_mass, 2) +
5808 3. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) -
5809 2. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
5810 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
5811 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) +
5812 4. * pow(m_rho, 2) + 4. * s))) *
5813 (-1. * pow(m_rho, 2) + s + tmax) -
5814 0.03125 * pow(eta1 - 1. * eta2, 3) *
5815 (eta2 * (-1. * pow(a1_mass, 2) - 1. * pow(m_rho, 2) - 1. * s) +
5816 eta1 * (pow(a1_mass, 2) - 1. * pow(m_rho, 2) + s)) *
5817 pow(-1. * pow(m_rho, 2) + s + tmax, 2) +
5818 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) *
5819 pow(-1. * pow(m_rho, 2) + s + tmax, 3) +
5820 0.25 * (eta1 - 1. * eta2) * (1. * eta1 - 1. * eta2) *
5821 (-1. + 2. * C4 * pow(m_rho, 2)) *
5822 pow(pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
5825 (2. * (1. * eta1 - 1. * eta2) *
5827 (0.375 * pow(m_rho, 4) - 0.0625 * delta * pow(m_rho, 4) -
5828 0.5 * C4 * pow(m_rho, 6) +
5830 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
5832 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
5833 0.125 * pow(m_rho, 2) * s - 0.1875 * delta * pow(m_rho, 2) * s +
5834 1. * C4 * pow(m_rho, 4) * s + 0.125 * delta * pow(s, 2) -
5835 0.5 * C4 * pow(m_rho, 2) * pow(s, 2)) +
5836 eta1 * (0.25 * pow(m_rho, 4) - 0.5 * C4 * pow(m_rho, 6) +
5838 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
5840 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
5841 0.125 * delta * pow(s, 2) +
5842 0.5 * C4 * pow(m_rho, 2) * pow(s, 2))) *
5843 (1. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
5844 1. * s + 1. * tmax)) /
5846 (2. * (1. * eta1 - 1. * eta2) * Gammaa1 * a1_mass *
5848 (0.375 * pow(m_rho, 4) - 0.0625 * delta * pow(m_rho, 4) -
5849 0.5 * C4 * pow(m_rho, 6) +
5851 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
5853 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
5854 0.125 * pow(m_rho, 2) * s - 0.1875 * delta * pow(m_rho, 2) * s +
5855 1. * C4 * pow(m_rho, 4) * s + 0.125 * delta * pow(s, 2) -
5856 0.5 * C4 * pow(m_rho, 2) * pow(s, 2)) +
5857 eta1 * (0.25 * pow(m_rho, 4) - 0.5 * C4 * pow(m_rho, 6) +
5859 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
5861 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) -
5862 0.125 * delta * pow(s, 2) +
5863 0.5 * C4 * pow(m_rho, 2) * pow(s, 2))) *
5864 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
5866 (Gammaa1 * a1_mass))) /
5868 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) * Gammaa1 * a1_mass *
5870 (-1. * pow(a1_mass, 6) +
5871 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5872 (-1. * pow(a1_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
5874 (2. * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
5875 pow(
pion_mass, 4) * (-1.5 * pow(m_rho, 2) + 1. * s) +
5877 (-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + 2. * s)) +
5878 eta1 * (pow(Gammaa1, 2) * pow(a1_mass, 2) *
5880 pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
5884 (1. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
5885 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 1.5 * s) +
5886 1. * pow(m_rho, 2) * s))) *
5887 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
5889 (Gammaa1 * a1_mass))) /
5890 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
5892 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) * Gammaa1 * a1_mass *
5894 (-1. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
5895 1. * pow(
pion_mass, 2) * pow(m_rho, 4) +
5897 (2. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) - 1.5 * s) +
5899 3. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
5900 0.5 * pow(m_rho, 4) * s - 2. * pow(
pion_mass, 2) * pow(s, 2) -
5901 1. * pow(m_rho, 2) * pow(s, 2) + 0.5 * pow(s, 3) +
5903 (-1. * pow(a1_mass, 4) + 0.5 * pow(a1_mass, 2) * s) +
5905 (-1. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
5906 1. * pow(m_rho, 2) * s +
5907 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 1. * s))) +
5910 4. * pow(
pion_mass, 4) * pow(m_rho, 2) +
5911 1. * pow(
pion_mass, 2) * pow(m_rho, 4) +
5912 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5914 pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) - 0.5 * s) -
5916 4. * pow(
pion_mass, 2) * pow(m_rho, 2) * s -
5917 0.5 * pow(m_rho, 4) * s + 3. * pow(
pion_mass, 2) * pow(s, 2) +
5918 1. * pow(m_rho, 2) * pow(s, 2) - 0.5 * pow(s, 3) +
5921 (1. * pow(m_rho, 2) - 1. * s) * s +
5922 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 3. * s)))) *
5923 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
5925 (Gammaa1 * a1_mass))) /
5926 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
5928 pow(m_rho, 4) - 2. * pow(
pion_mass, 2) * s -
5929 2. * pow(m_rho, 2) * s + pow(s, 2) +
5931 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s)) +
5932 (0.03125 * pow(eta1 - 1. * eta2, 2) *
5934 (pow(Gammaa1, 4) * pow(a1_mass, 4) + pow(a1_mass, 8) +
5938 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
5940 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
5941 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
5942 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
5945 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
5946 pow(
pion_mass, 4) * (6. * pow(m_rho, 2) + 2. * s)) +
5947 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5948 (-6. * pow(a1_mass, 4) - 6. * pow(
pion_mass, 4) -
5949 1. * pow(m_rho, 4) +
5950 pow(a1_mass, 2) * (12. * pow(
pion_mass, 2) -
5951 6. * pow(m_rho, 2) - 6. * s) +
5952 2. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
5953 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) + 4. * s))) +
5955 (-2. * pow(Gammaa1, 4) * pow(a1_mass, 4) - 2. * pow(a1_mass, 8) -
5957 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
5958 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
5960 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) -
5961 4. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s) +
5963 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
5964 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
5966 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5967 (12. * pow(a1_mass, 4) + 12. * pow(
pion_mass, 4) -
5968 2. * pow(m_rho, 4) - 8. * pow(
pion_mass, 2) * s -
5969 4. * pow(m_rho, 2) * s + 4. * pow(s, 2) +
5970 pow(a1_mass, 2) * (-24. * pow(
pion_mass, 2) + 12. * s))) +
5972 (pow(Gammaa1, 4) * pow(a1_mass, 4) + pow(a1_mass, 8) +
5974 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
5976 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
5977 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
5978 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
5981 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
5982 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
5983 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s)) +
5984 pow(Gammaa1, 2) * pow(a1_mass, 2) *
5985 (-6. * pow(a1_mass, 4) - 6. * pow(
pion_mass, 4) -
5986 1. * pow(m_rho, 4) +
5987 pow(a1_mass, 2) * (12. * pow(
pion_mass, 2) +
5988 6. * pow(m_rho, 2) - 6. * s) +
5989 4. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
5990 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 4. * s)) +
5993 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
5994 2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s +
5996 (pow(m_rho, 4) - 2. * pow(m_rho, 2) * s)))) *
5997 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
5999 (Gammaa1 * a1_mass))) /
6000 (Gammaa1 * a1_mass) -
6001 (0.0625 * pow(eta1 - 1. * eta2, 2) * Gammaa1 * a1_mass *
6003 (-2. * pow(Gammaa1, 4) * pow(a1_mass, 4) +
6004 14. * pow(a1_mass, 8) + 14. * pow(
pion_mass, 8) +
6005 28. * pow(
pion_mass, 6) * pow(m_rho, 2) +
6006 20. * pow(
pion_mass, 4) * pow(m_rho, 4) +
6007 10. * pow(
pion_mass, 2) * pow(m_rho, 6) + 2. * pow(m_rho, 8) -
6009 16. * pow(
pion_mass, 4) * pow(m_rho, 2) * s -
6010 12. * pow(
pion_mass, 2) * pow(m_rho, 4) * s -
6011 4. * pow(m_rho, 6) * s - 4. * pow(
pion_mass, 4) * pow(s, 2) -
6012 6. * pow(
pion_mass, 2) * pow(m_rho, 2) * pow(s, 2) +
6014 4. * pow(m_rho, 2) * pow(s, 3) - 2. * pow(s, 4) +
6016 (-56. * pow(
pion_mass, 2) - 28. * pow(m_rho, 2) + 28. * s) +
6018 (84. * pow(
pion_mass, 4) + 24. * pow(m_rho, 4) +
6019 pow(
pion_mass, 2) * (84. * pow(m_rho, 2) - 72. * s) -
6020 36. * pow(m_rho, 2) * s + 12. * pow(s, 2)) +
6021 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6022 (-4. * pow(a1_mass, 4) - 4. * pow(
pion_mass, 4) +
6023 pow(a1_mass, 2) * (8. * pow(
pion_mass, 2) +
6024 4. * pow(m_rho, 2) - 4. * s) +
6025 (4. * pow(m_rho, 2) - 4. * s) * s +
6026 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 8. * s)) +
6028 (-56. * pow(
pion_mass, 6) - 10. * pow(m_rho, 6) +
6029 18. * pow(m_rho, 4) * s - 6. * pow(m_rho, 2) * pow(s, 2) -
6031 pow(
pion_mass, 4) * (-84. * pow(m_rho, 2) + 60. * s) +
6033 (-48. * pow(m_rho, 4) + 60. * pow(m_rho, 2) * s -
6034 12. * pow(s, 2)))) +
6036 (1. * pow(Gammaa1, 4) * pow(a1_mass, 4) - 7. * pow(a1_mass, 8) -
6038 14. * pow(
pion_mass, 6) * pow(m_rho, 2) -
6039 7. * pow(
pion_mass, 4) * pow(m_rho, 4) -
6040 2. * pow(
pion_mass, 2) * pow(m_rho, 6) +
6042 (28. * pow(
pion_mass, 2) + 14. * pow(m_rho, 2) - 14. * s) +
6044 11. * pow(
pion_mass, 4) * pow(m_rho, 2) * s +
6045 6. * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
6046 1. * pow(m_rho, 6) * s + 2. * pow(
pion_mass, 4) * pow(s, 2) -
6047 1. * pow(m_rho, 4) * pow(s, 2) -
6049 1. * pow(m_rho, 2) * pow(s, 3) + 1. * pow(s, 4) +
6050 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6051 (2. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) +
6052 1. * pow(m_rho, 4) +
6053 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 4. * s) -
6054 1. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
6055 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
6056 2. * pow(m_rho, 2) + 2. * s)) +
6058 (-42. * pow(
pion_mass, 4) - 9. * pow(m_rho, 4) +
6059 21. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
6060 pow(
pion_mass, 2) * (-42. * pow(m_rho, 2) + 36. * s)) +
6062 (28. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) +
6063 pow(
pion_mass, 4) * (42. * pow(m_rho, 2) - 30. * s) -
6064 9. * pow(m_rho, 4) * s + 6. * pow(m_rho, 2) * pow(s, 2) +
6067 (18. * pow(m_rho, 4) - 36. * pow(m_rho, 2) * s +
6070 (1. * pow(Gammaa1, 4) * pow(a1_mass, 4) - 7. * pow(a1_mass, 8) -
6072 14. * pow(
pion_mass, 6) * pow(m_rho, 2) -
6073 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
6074 6. * pow(
pion_mass, 2) * pow(m_rho, 6) + 2. * pow(m_rho, 8) +
6076 (28. * pow(
pion_mass, 2) + 14. * pow(m_rho, 2) - 14. * s) +
6078 1. * pow(
pion_mass, 4) * pow(m_rho, 2) * s -
6079 16. * pow(
pion_mass, 2) * pow(m_rho, 4) * s -
6080 7. * pow(m_rho, 6) * s + 2. * pow(
pion_mass, 4) * pow(s, 2) +
6081 14. * pow(
pion_mass, 2) * pow(m_rho, 2) * pow(s, 2) +
6082 9. * pow(m_rho, 4) * pow(s, 2) -
6084 5. * pow(m_rho, 2) * pow(s, 3) + 1. * pow(s, 4) +
6085 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6086 (2. * pow(a1_mass, 4) + 2. * pow(
pion_mass, 4) +
6087 3. * pow(m_rho, 4) +
6088 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 4. * s) -
6089 5. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
6090 pow(a1_mass, 2) * (-4. * pow(
pion_mass, 2) -
6091 2. * pow(m_rho, 2) + 2. * s)) +
6093 (-42. * pow(
pion_mass, 4) - 3. * pow(m_rho, 4) +
6094 9. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
6095 pow(
pion_mass, 2) * (-42. * pow(m_rho, 2) + 36. * s)) +
6097 (28. * pow(
pion_mass, 6) - 4. * pow(m_rho, 6) +
6098 pow(
pion_mass, 4) * (42. * pow(m_rho, 2) - 30. * s) +
6099 9. * pow(m_rho, 4) * s - 6. * pow(m_rho, 2) * pow(s, 2) +
6102 (6. * pow(m_rho, 4) - 12. * pow(m_rho, 2) * s +
6103 6. * pow(s, 2))))) *
6104 atan((pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) +
6106 (Gammaa1 * a1_mass))) /
6107 (pow(Gammaa1, 2) * pow(a1_mass, 2) + 4. * pow(a1_mass, 4) +
6109 pow(m_rho, 4) - 4. * pow(
pion_mass, 2) * s -
6110 2. * pow(m_rho, 2) * s + pow(s, 2) +
6112 (-8. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 4. * s)) +
6113 0.0625 * pow(eta1 - 1. * eta2, 2) *
6115 (-4. * pow(a1_mass, 6) +
6116 pow(a1_mass, 4) * (12. * pow(
pion_mass, 2) - 6. * s) +
6118 (4. * pow(
pion_mass, 4) - 4. * pow(m_rho, 4) -
6119 2. * pow(
pion_mass, 2) * s + 2. * pow(m_rho, 2) * s) +
6121 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
6122 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
6125 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) +
6127 pow(m_rho, 2) * (pow(m_rho, 2) - 1. * s) * s +
6128 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) + s) +
6130 (-6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) + 3. * s) +
6132 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
6133 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
6134 4. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
6136 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) -
6137 1. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
6138 pow(
pion_mass, 4) * (3. * pow(m_rho, 2) + s) +
6140 (-6. * pow(
pion_mass, 2) + 3. * pow(m_rho, 2) + 3. * s) +
6142 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
6143 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
6144 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)))) *
6145 log(abs(-1. * pow(a1_mass, 2) + tmax)) -
6146 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
6148 (-0.5 * pow(a1_mass, 6) - 0.5 * pow(
pion_mass, 6) +
6149 0.5 * pow(
pion_mass, 4) * pow(m_rho, 2) +
6151 (0.5 * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
6153 (0.5 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 1. * s)) +
6154 eta1 * (pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
6156 (1. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
6157 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 0.5 * s) -
6158 0.5 * pow(m_rho, 2) * s) +
6160 (-2. * pow(
pion_mass, 4) - 0.5 * pow(m_rho, 2) * s +
6161 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
6162 log(abs(-1. * pow(a1_mass, 2) + tmax))) /
6163 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
6164 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
6165 (eta2 * (-0.5 * pow(a1_mass, 6) - 0.5 * pow(
pion_mass, 6) +
6167 (0.5 * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2)) +
6168 pow(
pion_mass, 4) * (0.5 * pow(m_rho, 2) - 1. * s) +
6169 pow(
pion_mass, 2) * (-0.5 * pow(m_rho, 2) + 0.5 * s) * s +
6172 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
6173 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s)) +
6175 pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) - 0.5 * s) +
6176 pow(
pion_mass, 2) * (1.5 * pow(m_rho, 2) - 2. * s) * s +
6177 (-0.5 * pow(m_rho, 2) + 0.5 * s) * pow(s, 2) +
6178 pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 1.5 * s) +
6180 (-2. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 2) * s +
6181 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
6182 log(abs(-1. * pow(a1_mass, 2) + tmax))) /
6183 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
6184 1. * pow(m_rho, 2) + 1. * s) -
6185 (0.03125 * pow(eta1 - 1. * eta2, 2) *
6186 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) - 0.5 * pow(m_rho, 2) +
6189 (-2. * pow(a1_mass, 8) +
6191 (8. * pow(
pion_mass, 2) + 4. * pow(m_rho, 2) - 4. * s) +
6193 (-12. * pow(
pion_mass, 4) - 4. * pow(m_rho, 4) +
6194 4. * pow(m_rho, 2) * s +
6195 pow(
pion_mass, 2) * (-12. * pow(m_rho, 2) + 8. * s)) +
6198 4. * pow(
pion_mass, 4) * pow(m_rho, 2) -
6199 2. * pow(m_rho, 6) + 4. * pow(m_rho, 4) * s -
6200 2. * pow(m_rho, 2) * pow(s, 2) +
6202 (-8. * pow(m_rho, 4) + 8. * pow(m_rho, 2) * s)) +
6204 (8. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) +
6205 pow(
pion_mass, 4) * (12. * pow(m_rho, 2) - 4. * s) -
6206 2. * pow(m_rho, 4) * s - 2. * pow(m_rho, 2) * pow(s, 2) +
6209 (8. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s -
6214 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
6216 2. * pow(
pion_mass, 2) * pow(m_rho, 2) +
6217 pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
6219 (6. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
6220 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) +
6221 pow(m_rho, 2) * s) +
6223 (-4. * pow(
pion_mass, 6) + 2. * pow(m_rho, 6) -
6224 5. * pow(m_rho, 4) * s + 4. * pow(m_rho, 2) * pow(s, 2) -
6226 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s) +
6228 (2. * pow(m_rho, 4) - 4. * pow(m_rho, 2) * s +
6232 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
6234 (-2. * pow(m_rho, 2) + 2. * s) +
6236 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
6238 (3. * pow(m_rho, 4) - 5. * pow(m_rho, 2) * s) +
6240 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
6241 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
6242 3. * pow(m_rho, 2) * s) +
6244 (-4. * pow(
pion_mass, 6) + pow(m_rho, 4) * s -
6246 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s) +
6248 (-2. * pow(m_rho, 4) + 4. * pow(m_rho, 2) * s +
6249 2. * pow(s, 2))))) *
6250 log(abs(-1. * pow(a1_mass, 2) + tmax))) /
6251 (0.25 * pow(Gammaa1, 2) * pow(a1_mass, 2) + 1. * pow(a1_mass, 4) +
6253 0.25 * pow(m_rho, 4) - 1. * pow(
pion_mass, 2) * s -
6254 0.5 * pow(m_rho, 2) * s + 0.25 * pow(s, 2) +
6256 (-2. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + 1. * s)) -
6257 (1. * (1. * eta1 - 1. * eta2) *
6260 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
6262 (pow(
pion_mass, 2) * (0.5 - 1. * C4 * pow(m_rho, 2)) +
6263 (-0.25 + 0.125 * delta) * (pow(m_rho, 2) + s)) +
6265 (-1. * C4 * pow(m_rho, 6) +
6267 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4)) +
6268 0.25 * delta * pow(s, 2) +
6269 pow(m_rho, 2) * s * (-0.25 - 0.375 * delta - 1. * C4 * s) +
6270 pow(m_rho, 4) * (0.75 - 0.125 * delta + 2. * C4 * s))) +
6273 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) +
6275 (0.5 * pow(m_rho, 4) - 1. * C4 * pow(m_rho, 6) +
6277 (1. * pow(m_rho, 2) - 2. * C4 * pow(m_rho, 4)) -
6278 0.25 * delta * pow(s, 2) +
6279 1. * C4 * pow(m_rho, 2) * pow(s, 2)) +
6281 (pow(
pion_mass, 4) * (-0.5 + 1. * C4 * pow(m_rho, 2)) +
6282 s * ((0.25 - 0.125 * delta) * pow(m_rho, 2) +
6283 (-0.25 + 0.125 * delta) * s) +
6285 (2. * C4 * pow(m_rho, 4) + (0.5 + 0.25 * delta) * s +
6286 pow(m_rho, 2) * (-1. - 2. * C4 * s))))) *
6287 log(abs(-1. * pow(a1_mass, 2) + tmax))) /
6289 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
6290 log(abs(-1. * pow(
pion_mass, 2) + tmax)) +
6293 8.000000000000002 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
6295 5.999999999999999 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 2) *
6297 1. * pow(2. - 1. * delta, 2) * pow(m_rho, 2) * pow(s, 2)) *
6298 log(abs(-1. * pow(
pion_mass, 2) + tmax))) /
6299 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
6300 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) * pow(
pion_mass, 2) *
6301 (0. + eta2 * pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 4. * s) +
6302 eta1 * (2. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s +
6303 pow(
pion_mass, 2) * (-4. * pow(m_rho, 2) + 4. * s))) *
6304 log(abs(-1. * pow(
pion_mass, 2) + tmax))) /
6305 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
6306 (2. * (-2. + 1. * delta) *
6307 (0. + (-0.25 + 0.125 * delta) * pow(m_rho, 2) * s +
6308 pow(
pion_mass, 2) * (-2. * C4 * pow(m_rho, 4) - 0.5 * delta * s +
6309 pow(m_rho, 2) * (1. + 2. * C4 * s))) *
6310 log(abs(-1. * pow(
pion_mass, 2) + tmax))) /
6312 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) * pow(
pion_mass, 2) *
6313 (eta1 * (pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 1. * s) +
6315 (pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
6316 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s) +
6318 (-1. * pow(m_rho, 4) + 2.5 * pow(m_rho, 2) * s -
6320 s * (0.5 * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
6323 (0.5 * pow(m_rho, 6) +
6324 pow(
pion_mass, 4) * (1. * pow(m_rho, 2) - 1. * s) -
6325 1.5 * pow(m_rho, 4) * s + 1.5 * pow(m_rho, 2) * pow(s, 2) -
6327 pow(
pion_mass, 2) * (1.5 * pow(m_rho, 4) -
6328 3. * pow(m_rho, 2) * s + 1.5 * pow(s, 2)) +
6330 (-0.5 * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s -
6332 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
6333 log(abs(-1. * pow(
pion_mass, 2) + tmax))) /
6334 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
6336 pow(m_rho, 4) - 2. * pow(
pion_mass, 2) * s -
6337 2. * pow(m_rho, 2) * s + pow(s, 2) +
6339 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s)) -
6340 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
6341 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s + tmax)) +
6342 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) *
6343 (eta2 * pow(
pion_mass, 6) * (1. * pow(m_rho, 2) - 1. * s) +
6344 eta2 * pow(a1_mass, 2) * pow(
pion_mass, 4) *
6345 (-1. * pow(m_rho, 2) + 1. * s) +
6346 eta1 * pow(a1_mass, 2) * pow(
pion_mass, 2) *
6347 (-0.5 * pow(m_rho, 4) +
6348 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
6349 0.5 * pow(m_rho, 2) * s) +
6351 (0.5 * pow(m_rho, 4) - 0.5 * pow(m_rho, 2) * s +
6352 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s))) *
6353 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s + tmax))) /
6354 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
6356 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) * pow(
pion_mass, 2) *
6357 (eta1 * (pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
6358 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s) +
6359 eta2 * (-0.5 * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s -
6361 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s))) *
6362 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s + tmax))) /
6363 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
6364 1. * pow(m_rho, 2) + 1. * s) -
6367 8.000000000000002 * pow(2. - 1. * delta, 2) * pow(
pion_mass, 4) *
6369 1. * pow(2. - 1. * delta, 2) * pow(m_rho, 4) * s +
6371 (C4 * (32. - 16. * delta) * pow(m_rho, 6) +
6372 delta * (-8. + 4. * delta) * pow(s, 2) +
6374 (-8. + 24. * delta - 10. * pow(delta, 2) + 32. * C4 * s -
6375 16. * C4 * delta * s) +
6376 pow(m_rho, 4) * (-16. + 8. * delta - 64. * C4 * s +
6377 32. * C4 * delta * s))) *
6378 log(abs(-1. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) + s + tmax))) /
6379 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
6380 0.03125 * pow(eta1 - 1. * eta2, 2) *
6382 (4. * pow(a1_mass, 6) +
6383 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6384 (-4. * pow(a1_mass, 2) + 4. * pow(
pion_mass, 2) -
6386 pow(a1_mass, 4) * (-12. * pow(
pion_mass, 2) + 6. * s) +
6388 (-4. * pow(
pion_mass, 4) + 4. * pow(m_rho, 4) +
6389 2. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s) +
6391 (12. * pow(
pion_mass, 4) - 2. * pow(m_rho, 4) -
6392 8. * pow(
pion_mass, 2) * s - 4. * pow(m_rho, 2) * s +
6395 (-2. * pow(a1_mass, 6) + 2. * pow(
pion_mass, 6) +
6396 3. * pow(
pion_mass, 4) * pow(m_rho, 2) +
6398 (6. * pow(
pion_mass, 2) + 3. * pow(m_rho, 2) - 3. * s) -
6400 1. * pow(
pion_mass, 2) * pow(m_rho, 2) * s -
6401 1. * pow(m_rho, 4) * s + pow(m_rho, 2) * pow(s, 2) +
6402 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6403 (2. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
6404 1. * pow(m_rho, 2) + s) +
6406 (-6. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
6407 4. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
6408 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) + 4. * s))) +
6410 (-2. * pow(a1_mass, 6) + 2. * pow(
pion_mass, 6) -
6411 3. * pow(
pion_mass, 4) * pow(m_rho, 2) +
6413 (6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) - 3. * s) -
6416 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6417 (2. * pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) +
6418 pow(m_rho, 2) + s) +
6420 (-6. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
6421 2. * pow(m_rho, 2) * s - 2. * pow(s, 2) +
6422 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) + 4. * s)))) *
6423 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
6424 4. * pow(a1_mass, 2) * pow(
pion_mass, 2) +
6426 2. * pow(a1_mass, 2) * (-1. * pow(m_rho, 2) + s + tmax) -
6427 4. * pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + s + tmax) +
6428 pow(-1. * pow(m_rho, 2) + s + tmax, 2))) -
6429 (0.5 * (1. * eta1 - 1. * eta2) *
6430 (eta2 * (pow(Gammaa1, 2) * pow(a1_mass, 2) * pow(m_rho, 2) *
6431 (0.5 - 1. * C4 * pow(m_rho, 2)) +
6433 (-0.5 * pow(m_rho, 2) + 1. * C4 * pow(m_rho, 4)) +
6435 (pow(
pion_mass, 2) * (-0.5 + 1. * C4 * pow(m_rho, 2)) +
6436 (0.25 - 0.125 * delta) * (pow(m_rho, 2) + s)) +
6438 (1. * C4 * pow(m_rho, 6) +
6440 (1. * pow(m_rho, 2) - 2. * C4 * pow(m_rho, 4)) -
6441 0.25 * delta * pow(s, 2) +
6442 pow(m_rho, 4) * (-0.75 + 0.125 * delta - 2. * C4 * s) +
6444 (0.25 + 0.375 * delta + 1. * C4 * s))) +
6446 (pow(Gammaa1, 2) * pow(a1_mass, 2) * pow(m_rho, 2) *
6447 (-0.5 + 1. * C4 * pow(m_rho, 2)) +
6449 (0.5 * pow(m_rho, 2) - 1. * C4 * pow(m_rho, 4)) +
6451 (-0.5 * pow(m_rho, 4) + 1. * C4 * pow(m_rho, 6) +
6453 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4)) +
6454 0.25 * delta * pow(s, 2) -
6455 1. * C4 * pow(m_rho, 2) * pow(s, 2)) +
6457 (pow(
pion_mass, 4) * (0.5 - 1. * C4 * pow(m_rho, 2)) +
6458 s * ((-0.25 + 0.125 * delta) * pow(m_rho, 2) +
6459 (0.25 - 0.125 * delta) * s) +
6461 (-2. * C4 * pow(m_rho, 4) + (-0.5 - 0.25 * delta) * s +
6462 pow(m_rho, 2) * (1. + 2. * C4 * s))))) *
6463 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) +
6464 pow(pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
6465 1. * pow(m_rho, 2) + s + tmax,
6468 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
6470 (0.5 * pow(Gammaa1, 4) * pow(a1_mass, 4) -
6471 0.5 * pow(a1_mass, 8) + 0.5 * pow(
pion_mass, 8) +
6472 0.5 * pow(a1_mass, 4) * pow(
pion_mass, 2) * pow(m_rho, 2) -
6473 0.5 * pow(
pion_mass, 6) * pow(m_rho, 2) +
6476 (1. * pow(
pion_mass, 2) + 1.5 * pow(m_rho, 2) -
6478 pow(a1_mass, 4) * (-1. * pow(
pion_mass, 2) +
6479 0.5 * pow(m_rho, 2) - 1. * s)) +
6481 (1. * pow(
pion_mass, 2) + 0.5 * pow(m_rho, 2) - 1. * s) +
6483 (-1. * pow(
pion_mass, 2) - 0.5 * pow(m_rho, 2) + 1. * s)) +
6484 eta1 * (pow(a1_mass, 6) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
6485 pow(a1_mass, 2) * (3. * pow(
pion_mass, 6) +
6486 1. * pow(
pion_mass, 2) * pow(m_rho, 4) -
6490 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 0.5 * s) -
6491 0.5 * pow(m_rho, 2) * s) +
6493 (-1. * pow(
pion_mass, 4) - 1. * pow(m_rho, 4) +
6494 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 0.5 * s) +
6495 0.5 * pow(m_rho, 2) * s) +
6496 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6498 pow(a1_mass, 2) * (1. * pow(
pion_mass, 2) + 0.5 * s) -
6499 0.5 * pow(m_rho, 2) * s +
6500 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1.5 * s)))) *
6501 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
6503 4. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
6504 4. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s +
6505 pow(s, 2) - 4. * pow(
pion_mass, 2) * tmax -
6506 2. * pow(m_rho, 2) * tmax + 2. * s * tmax + pow(tmax, 2) +
6508 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s +
6510 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) -
6512 (0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
6514 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
6515 pow(a1_mass, 6) * (1. * pow(
pion_mass, 2) - 0.5 * s) -
6517 4. * pow(
pion_mass, 4) * pow(m_rho, 2) * s -
6518 1.5 * pow(
pion_mass, 2) * pow(m_rho, 4) * s +
6520 4. * pow(
pion_mass, 2) * pow(m_rho, 2) * pow(s, 2) +
6521 0.5 * pow(m_rho, 4) * pow(s, 2) -
6523 1. * pow(m_rho, 2) * pow(s, 3) + 0.5 * pow(s, 4) +
6524 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6526 pow(a1_mass, 2) * (1. * pow(
pion_mass, 2) - 0.5 * s) -
6527 0.5 * pow(
pion_mass, 2) * s + 0.5 * pow(s, 2)) +
6530 (1. * pow(m_rho, 2) - 0.5 * s) * s +
6531 pow(
pion_mass, 2) * (-2. * pow(m_rho, 2) + 2.5 * s)) +
6534 pow(
pion_mass, 4) * (2. * pow(m_rho, 2) - 1.5 * s) -
6535 0.5 * pow(m_rho, 4) * s + 0.5 * pow(s, 3) +
6537 (1. * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s -
6540 (0.5 * pow(Gammaa1, 4) * pow(a1_mass, 4) -
6541 0.5 * pow(a1_mass, 8) + 0.5 * pow(
pion_mass, 8) +
6543 (1. * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) - 0.5 * s) +
6545 pow(a1_mass, 4) * (-0.5 * pow(m_rho, 4) +
6546 (-0.5 * pow(
pion_mass, 2) + 0.5 * s) * s) +
6547 pow(
pion_mass, 4) * (-0.5 * pow(m_rho, 4) +
6548 2. * pow(m_rho, 2) * s - 1.5 * pow(s, 2)) +
6550 (0.5 * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
6552 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6553 (1. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 4) +
6554 pow(
pion_mass, 2) * (2. * pow(m_rho, 2) - 1.5 * s) -
6555 1. * pow(m_rho, 2) * s + 0.5 * pow(s, 2) +
6556 pow(a1_mass, 2) * (-1. * pow(
pion_mass, 2) -
6557 1. * pow(m_rho, 2) + 1.5 * s)) +
6560 pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 0.5 * s) +
6562 (-1. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s -
6564 s * (0.5 * pow(m_rho, 4) - 1. * pow(m_rho, 2) * s +
6565 0.5 * pow(s, 2))))) *
6566 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
6568 4. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
6569 4. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s +
6570 pow(s, 2) - 4. * pow(
pion_mass, 2) * tmax -
6571 2. * pow(m_rho, 2) * tmax + 2. * s * tmax + pow(tmax, 2) +
6573 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s +
6575 (pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
6577 pow(m_rho, 4) - 2. * pow(
pion_mass, 2) * s -
6578 2. * pow(m_rho, 2) * s + pow(s, 2) +
6580 (-2. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s)) -
6581 (0.0625 * pow(eta1 - 1. * eta2, 2) *
6583 (-1. * pow(a1_mass, 10) +
6585 (5. * pow(
pion_mass, 2) + 2.5 * pow(m_rho, 2) - 2.5 * s) +
6586 pow(Gammaa1, 4) * pow(a1_mass, 4) *
6587 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
6588 0.5 * pow(m_rho, 2) + 0.5 * s) +
6590 (10. * pow(
pion_mass, 6) - 2.5 * pow(m_rho, 6) +
6591 pow(
pion_mass, 4) * (15. * pow(m_rho, 2) - 9. * s) +
6592 6. * pow(m_rho, 4) * s - 4.5 * pow(m_rho, 2) * pow(s, 2) +
6596 (1. * pow(m_rho, 2) - 1. * s) * s +
6597 pow(
pion_mass, 2) * (-10. * pow(m_rho, 2) + 8. * s)) +
6599 (1. * pow(
pion_mass, 6) + 0.5 * pow(m_rho, 6) +
6600 pow(
pion_mass, 4) * (2.5 * pow(m_rho, 2) - 0.5 * s) -
6601 1. * pow(m_rho, 4) * s + 0.5 * pow(m_rho, 2) * pow(s, 2) +
6603 (2. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s)) +
6604 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6605 (4. * pow(a1_mass, 6) - 4. * pow(
pion_mass, 6) -
6606 0.5 * pow(m_rho, 6) + 1.5 * pow(m_rho, 4) * s -
6607 1.5 * pow(m_rho, 2) * pow(s, 2) + 0.5 * pow(s, 3) +
6608 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 6. * s) +
6609 pow(a1_mass, 4) * (-12. * pow(
pion_mass, 2) -
6610 6. * pow(m_rho, 2) + 6. * s) +
6612 (-3. * pow(m_rho, 4) + 6. * pow(m_rho, 2) * s -
6615 (12. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) +
6616 pow(
pion_mass, 2) * (12. * pow(m_rho, 2) - 12. * s) -
6617 6. * pow(m_rho, 2) * s + 3. * pow(s, 2))) +
6619 (-5. * pow(
pion_mass, 8) + 1. * pow(m_rho, 8) -
6620 3.5 * pow(m_rho, 6) * s + 4.5 * pow(m_rho, 4) * pow(s, 2) -
6621 2.5 * pow(m_rho, 2) * pow(s, 3) + 0.5 * pow(s, 4) +
6622 pow(
pion_mass, 6) * (-10. * pow(m_rho, 2) + 4. * s) +
6624 (-2. * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s +
6627 (3. * pow(m_rho, 6) - 8. * pow(m_rho, 4) * s +
6628 7. * pow(m_rho, 2) * pow(s, 2) - 2. * pow(s, 3)))) +
6630 (-1. * pow(a1_mass, 10) +
6632 (5. * pow(
pion_mass, 2) + 2.5 * pow(m_rho, 2) - 2.5 * s) +
6633 pow(Gammaa1, 4) * pow(a1_mass, 4) *
6634 (1. * pow(a1_mass, 2) - 1. * pow(
pion_mass, 2) -
6635 0.5 * pow(m_rho, 2) + 0.5 * s) +
6637 (-10. * pow(
pion_mass, 4) - 2. * pow(m_rho, 4) +
6638 5. * pow(m_rho, 2) * s - 1. * pow(s, 2) +
6639 pow(
pion_mass, 2) * (-10. * pow(m_rho, 2) + 8. * s)) +
6641 (10. * pow(
pion_mass, 6) + 0.5 * pow(m_rho, 6) +
6642 pow(
pion_mass, 4) * (15. * pow(m_rho, 2) - 9. * s) -
6643 3. * pow(m_rho, 4) * s + 1.5 * pow(m_rho, 2) * pow(s, 2) +
6646 (6. * pow(m_rho, 4) - 12. * pow(m_rho, 2) * s)) +
6647 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6648 (4. * pow(a1_mass, 6) - 4. * pow(
pion_mass, 6) -
6649 0.5 * pow(m_rho, 6) + 1.5 * pow(m_rho, 4) * s -
6650 1.5 * pow(m_rho, 2) * pow(s, 2) + 0.5 * pow(s, 3) +
6651 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 6. * s) +
6652 pow(a1_mass, 4) * (-12. * pow(
pion_mass, 2) -
6653 6. * pow(m_rho, 2) + 6. * s) +
6655 (-3. * pow(m_rho, 4) + 6. * pow(m_rho, 2) * s -
6658 (12. * pow(
pion_mass, 4) + 3. * pow(m_rho, 4) +
6659 pow(
pion_mass, 2) * (12. * pow(m_rho, 2) - 12. * s) -
6660 6. * pow(m_rho, 2) * s + 3. * pow(s, 2))) +
6663 pow(
pion_mass, 6) * (2.5 * pow(m_rho, 2) - 0.5 * s) +
6665 (4. * pow(m_rho, 4) - 6. * pow(m_rho, 2) * s) +
6667 (-1. * pow(m_rho, 4) + 2. * pow(m_rho, 2) * s -
6670 (1.5 * pow(m_rho, 6) - 6. * pow(m_rho, 4) * s +
6671 4.5 * pow(m_rho, 2) * pow(s, 2))) +
6674 pow(
pion_mass, 6) * (-10. * pow(m_rho, 2) + 4. * s) +
6676 (-8. * pow(m_rho, 4) + 13. * pow(m_rho, 2) * s +
6679 (-1. * pow(m_rho, 6) + 6. * pow(m_rho, 4) * s -
6680 3. * pow(m_rho, 2) * pow(s, 2) - 2. * pow(s, 3)) +
6681 s * (0.5 * pow(m_rho, 6) - 0.5 * pow(m_rho, 4) * s -
6682 0.5 * pow(m_rho, 2) * pow(s, 2) + 0.5 * pow(s, 3)))) +
6684 (2. * pow(a1_mass, 10) +
6685 pow(Gammaa1, 4) * pow(a1_mass, 4) *
6686 (-2. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) +
6687 1. * pow(m_rho, 2) - 1. * s) +
6689 (-10. * pow(
pion_mass, 2) - 5. * pow(m_rho, 2) + 5. * s) +
6691 (20. * pow(
pion_mass, 4) + 6. * pow(m_rho, 4) +
6692 pow(
pion_mass, 2) * (20. * pow(m_rho, 2) - 16. * s) -
6693 8. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
6695 (-20. * pow(
pion_mass, 6) - 4. * pow(m_rho, 6) +
6696 6. * pow(m_rho, 4) * s - 2. * pow(s, 3) +
6697 pow(
pion_mass, 4) * (-30. * pow(m_rho, 2) + 18. * s) +
6699 (-18. * pow(m_rho, 4) + 18. * pow(m_rho, 2) * s)) +
6701 (-2. * pow(
pion_mass, 8) - 1. * pow(m_rho, 8) +
6702 3. * pow(m_rho, 6) * s - 3. * pow(m_rho, 4) * pow(s, 2) +
6703 1. * pow(m_rho, 2) * pow(s, 3) +
6704 pow(
pion_mass, 6) * (-5. * pow(m_rho, 2) + 1. * s) +
6706 (-10. * pow(m_rho, 4) + 10. * pow(m_rho, 2) * s) +
6708 (-6. * pow(m_rho, 6) + 12. * pow(m_rho, 4) * s -
6709 6. * pow(m_rho, 2) * pow(s, 2))) +
6711 (10. * pow(
pion_mass, 8) + 1. * pow(m_rho, 8) +
6712 pow(
pion_mass, 6) * (20. * pow(m_rho, 2) - 8. * s) -
6713 2. * pow(m_rho, 6) * s + 2. * pow(m_rho, 2) * pow(s, 3) -
6716 (22. * pow(m_rho, 4) - 20. * pow(m_rho, 2) * s -
6719 (8. * pow(m_rho, 6) - 12. * pow(m_rho, 4) * s +
6721 pow(Gammaa1, 2) * pow(a1_mass, 2) *
6722 (-8. * pow(a1_mass, 6) + 8. * pow(
pion_mass, 6) +
6723 1. * pow(m_rho, 6) +
6724 pow(
pion_mass, 4) * (12. * pow(m_rho, 2) - 12. * s) +
6725 pow(a1_mass, 4) * (24. * pow(
pion_mass, 2) +
6726 12. * pow(m_rho, 2) - 12. * s) -
6727 3. * pow(m_rho, 4) * s + 3. * pow(m_rho, 2) * pow(s, 2) -
6730 (6. * pow(m_rho, 4) - 12. * pow(m_rho, 2) * s +
6733 (-24. * pow(
pion_mass, 4) - 6. * pow(m_rho, 4) +
6734 12. * pow(m_rho, 2) * s - 6. * pow(s, 2) +
6736 (-24. * pow(m_rho, 2) + 24. * s))))) *
6737 log(abs(pow(Gammaa1, 2) * pow(a1_mass, 2) + pow(a1_mass, 4) +
6739 4. * pow(
pion_mass, 2) * pow(m_rho, 2) + pow(m_rho, 4) -
6740 4. * pow(
pion_mass, 2) * s - 2. * pow(m_rho, 2) * s +
6741 pow(s, 2) - 4. * pow(
pion_mass, 2) * tmax -
6742 2. * pow(m_rho, 2) * tmax + 2. * s * tmax + pow(tmax, 2) +
6744 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s +
6746 (pow(Gammaa1, 2) * pow(a1_mass, 2) + 4. * pow(a1_mass, 4) +
6748 pow(m_rho, 4) - 4. * pow(
pion_mass, 2) * s -
6749 2. * pow(m_rho, 2) * s + pow(s, 2) +
6751 (-8. * pow(
pion_mass, 2) - 4. * pow(m_rho, 2) + 4. * s)))) /
6752 (16. * Pi * s * (-4 * pow(
pion_mass, 2) + s)));
6759 const double s,
const double t,
const double m_rho) {
6760 const double spin_deg_factor = 1.0;
6768 const double diff_xs =
6769 ((pow(
Const, 2) * pow(ghat, 4) *
6771 (32 * pow(C4, 2) * pow(m_rho, 8) + 2 * pow(delta, 2) * pow(s, 2) +
6772 8 * C4 * pow(m_rho, 6) * (-6 + delta - 8 * C4 * s) +
6773 2 * delta * pow(m_rho, 2) * s * (-6 + delta - 8 * C4 * s) +
6774 pow(m_rho, 4) * (12 - pow(delta, 2) + 8 * C4 * (6 + delta) * s +
6775 32 * pow(C4, 2) * pow(s, 2)))) /
6777 (0.25 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
6778 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - t, 2) -
6779 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + t))) /
6780 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - t, 2)) -
6781 (0.25 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
6783 2 * pow(
pion_mass, 2) * (2 * pow(m_rho, 2) + s + t))) /
6785 pow(pow(
pion_mass, 2) + pow(m_rho, 2) - s - t, 2)) +
6786 (0.125 * (-2 + delta) * (eta1 - eta2) *
6787 (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s + t) *
6789 eta2 * (-3 * pow(
pion_mass, 2) - pow(m_rho, 2) + s + t)) *
6790 (pow(
pion_mass, 4) + t * (-pow(m_rho, 2) + 2 * s + t) -
6791 pow(
pion_mass, 2) * (pow(m_rho, 2) + 2 * t))) /
6793 (pow(Gammaa1, 2) * pow(a1_mass, 2) +
6794 pow(pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s +
6797 (0.125 * (-2 + delta) * (eta1 - eta2) *
6800 (-pow(
pion_mass, 4) + pow(s, 2) - pow(t, 2) +
6801 pow(m_rho, 2) * (-s + t) +
6802 pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s + 2 * t))) /
6803 ((pow(
pion_mass, 2) + pow(m_rho, 2) - s - t) *
6804 (-pow(a1_mass, 2) + t)) +
6805 (0.25 * (-2. + delta) *
6806 (pow(
pion_mass, 4) * (2. + delta - 8. * C4 * pow(m_rho, 2)) +
6807 8. * C4 * pow(m_rho, 4) * t +
6808 t * ((2. + 3. * delta) * s + (2. + delta) * t) +
6809 pow(m_rho, 2) * (s * (2. - 1. * delta - 16. * C4 * t) +
6810 t * (-2. - 1. * delta - 8. * C4 * t)) +
6812 (8. * C4 * pow(m_rho, 4) + (-2. + delta) * s +
6813 (-4. - 2. * delta) * t +
6814 pow(m_rho, 2) * (-6. + delta + 16. * C4 * t)))) /
6815 (pow(m_rho, 2) * (pow(
pion_mass, 2) - 1. * t)) -
6816 (0.125 * (-2 + delta) * (eta1 - eta2) *
6817 (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s + t) *
6818 (-(eta2 * (3 * pow(
pion_mass, 2) + pow(m_rho, 2) - s - t) *
6819 (pow(
pion_mass, 4) + (pow(m_rho, 2) - s - t) * (s - t) -
6820 pow(
pion_mass, 2) * (pow(m_rho, 2) - 2 * s + 2 * t))) +
6822 pow(
pion_mass, 4) * (-2 * pow(m_rho, 2) + 5 * s - 4 * t) +
6823 s * (s + t) * (-pow(m_rho, 2) + s + t) +
6825 (2 * pow(m_rho, 4) + pow(m_rho, 2) * (s - 2 * t) -
6826 2 * (2 * s - t) * (s + t))))) /
6827 ((-pow(
pion_mass, 2) - pow(m_rho, 2) + s + t) *
6828 (pow(Gammaa1, 2) * pow(a1_mass, 2) +
6829 pow(pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s +
6832 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
6834 pow(
pion_mass, 4) * (0.5 * pow(m_rho, 2) + 0.5 * t) +
6835 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s + 0.5 * t) *
6837 (0.5 * pow(m_rho, 2) - 1. * s - 0.5 * t) * pow(t, 2)) +
6840 pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 0.5 * s - 2. * t) +
6841 s * (-0.5 * pow(m_rho, 2) + 0.5 * t) * t +
6843 (1. * pow(m_rho, 4) + pow(m_rho, 2) * (-0.5 * s - 1. * t) +
6844 t * (1. * s + 1. * t))))) /
6845 ((pow(a1_mass, 2) - 1. * t) * (-1. * pow(
pion_mass, 2) + t)) +
6846 (0.03125 * pow(eta1 - eta2, 2) *
6849 pow(t, 2) * (-pow(m_rho, 4) - 2 * pow(m_rho, 2) * s +
6850 2 * pow(s, 2) + 2 * s * t + pow(t, 2)) -
6852 (-2 * pow(m_rho, 4) + pow(m_rho, 2) * s + 2 * t * (s + t)) +
6853 pow(
pion_mass, 4) * (-pow(m_rho, 4) + 2 * t * (s + 3 * t))) +
6856 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) + 2 * t) +
6857 pow(t, 2) * (pow(m_rho, 4) + 2 * pow(s, 2) + 2 * s * t +
6858 pow(t, 2) + 2 * pow(m_rho, 2) * (-s + t)) -
6860 (2 * t * (s + t) + pow(m_rho, 2) * (s + 3 * t)) +
6861 pow(
pion_mass, 4) * (pow(m_rho, 4) + 6 * pow(m_rho, 2) * t +
6862 2 * t * (s + 3 * t))) +
6865 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) - 2 * t) -
6866 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s - t) *
6867 (pow(m_rho, 4) + pow(m_rho, 2) * t - 2 * pow(t, 2)) +
6868 t * (-pow(m_rho, 2) + t) *
6869 (2 * pow(s, 2) + 2 * s * t + pow(t, 2) -
6870 pow(m_rho, 2) * (2 * s + t)) +
6872 (pow(m_rho, 4) - 2 * pow(m_rho, 2) * (s + 3 * t) +
6873 2 * t * (s + 3 * t))))) /
6874 pow(pow(a1_mass, 2) - t, 2) +
6875 ((0.25 * pow(-2 + delta, 2) * (2 * pow(
pion_mass, 2) - s) *
6876 (pow(
pion_mass, 4) + pow(m_rho, 2) * (s - t) + t * (s + t) -
6877 pow(
pion_mass, 2) * (3 * pow(m_rho, 2) + s + 2 * t))) /
6879 (pow(
pion_mass, 2) + pow(m_rho, 2) - s - t)) -
6880 (0.25 * (-2. + delta) *
6881 (pow(
pion_mass, 4) * (2. + delta - 8. * C4 * pow(m_rho, 2)) -
6882 2. * delta * pow(s, 2) + 2. * s * t - 1. * delta * s * t +
6883 2. * pow(t, 2) + delta * pow(t, 2) +
6884 C4 * pow(m_rho, 4) * (-8. * s + 8. * t) +
6885 pow(m_rho, 2) * ((2. + delta) * s + 8. * C4 * pow(s, 2) +
6886 t * (-2. - 1. * delta - 8. * C4 * t)) +
6887 pow(
pion_mass, 2) * (8. * C4 * pow(m_rho, 4) - 2. * s +
6888 5. * delta * s - 4. * t - 2. * delta * t +
6889 pow(m_rho, 2) * (-6. + delta - 16. * C4 * s +
6891 (pow(
pion_mass, 2) + pow(m_rho, 2) - 1. * s - 1. * t)) /
6893 (0.03125 * pow(eta1 - eta2, 2) *
6896 4 * pow(
pion_mass, 6) * (pow(m_rho, 2) - t) +
6897 pow(-pow(m_rho, 2) + s + t, 2) *
6898 (pow(s, 2) + pow(t, 2) - 2 * pow(m_rho, 2) * (s + t)) +
6900 (9 * pow(m_rho, 4) + 4 * pow(s, 2) + 2 * s * t +
6901 6 * pow(t, 2) - 2 * pow(m_rho, 2) * (7 * s + 6 * t)) +
6902 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s - t) *
6903 (2 * pow(m_rho, 4) - pow(m_rho, 2) * (5 * s + 4 * t) +
6904 2 * (pow(s, 2) + pow(t, 2)))) +
6907 pow(
pion_mass, 6) * (6 * pow(m_rho, 2) - 4 * t) +
6908 pow(-pow(m_rho, 2) + s + t, 2) *
6909 (4 * pow(m_rho, 4) + pow(s, 2) + pow(t, 2) -
6910 4 * pow(m_rho, 2) * (s + t)) +
6912 (17 * pow(m_rho, 4) + 4 * pow(s, 2) + 2 * s * t +
6913 6 * pow(t, 2) - 2 * pow(m_rho, 2) * (10 * s + 9 * t)) +
6914 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s - t) *
6915 (7 * pow(m_rho, 4) - pow(m_rho, 2) * (8 * s + 7 * t) +
6916 2 * (pow(s, 2) + pow(t, 2)))) +
6919 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) - 2 * t) +
6920 (s + t) * (-pow(m_rho, 2) + s + t) *
6921 (pow(s, 2) + pow(t, 2) - pow(m_rho, 2) * (s + t)) +
6923 (5 * pow(m_rho, 4) + 4 * pow(s, 2) + 2 * s * t +
6924 6 * pow(t, 2) - 2 * pow(m_rho, 2) * (5 * s + 3 * t)) -
6926 (2 * pow(m_rho, 4) * (s + t) +
6927 2 * (s + t) * (pow(s, 2) + pow(t, 2)) -
6929 (4 * pow(s, 2) + 5 * s * t + 3 * pow(t, 2)))))) /
6930 (pow(Gammaa1, 2) * pow(a1_mass, 2) +
6931 pow(pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s +
6934 (0.0625 * pow(eta1 - eta2, 2) *
6935 (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s + t) *
6938 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) - 2 * t) +
6940 (pow(pow(m_rho, 2) - s, 2) + (3 * pow(m_rho, 2) - 2 * s) * t -
6942 (pow(m_rho, 2) - s - t) * t *
6943 (2 * pow(m_rho, 4) + pow(s, 2) - s * t - pow(t, 2) +
6944 pow(m_rho, 2) * (-3 * s + t)) +
6945 pow(
pion_mass, 4) * (pow(m_rho, 4) + 2 * t * (s + 3 * t) -
6946 pow(m_rho, 2) * (s + 6 * t)))) -
6949 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) - 2 * t) +
6950 (pow(m_rho, 2) - s - t) * t *
6951 (pow(s, 2) - s * t - pow(t, 2) + pow(m_rho, 2) * (s + t)) +
6952 pow(
pion_mass, 4) * (3 * pow(m_rho, 4) + 2 * t * (s + 3 * t) -
6953 pow(m_rho, 2) * (5 * s + 6 * t)) +
6955 (-(pow(m_rho, 4) * (s + t)) +
6956 t * (pow(s, 2) - 2 * s * t - 2 * pow(t, 2)) +
6957 pow(m_rho, 2) * (pow(s, 2) + 2 * s * t + 3 * pow(t, 2)))) +
6960 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) - 2 * t) -
6961 (pow(m_rho, 2) - s - t) * t *
6962 (pow(m_rho, 4) - pow(s, 2) - pow(m_rho, 2) * t +
6965 (2 * pow(m_rho, 4) + t * (s + 3 * t) -
6966 pow(m_rho, 2) * (2 * s + 3 * t)) +
6968 (pow(m_rho, 6) - 2 * pow(m_rho, 4) * (s + 2 * t) +
6969 2 * t * (pow(s, 2) - 2 * s * t - 2 * pow(t, 2)) +
6971 (pow(s, 2) + 2 * s * t + 6 * pow(t, 2)))))) /
6972 ((-pow(a1_mass, 2) + t) *
6973 (pow(Gammaa1, 2) * pow(a1_mass, 2) +
6974 pow(pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s +
6977 (0.125 * (eta1 - eta2) *
6978 (eta2 * (8 * C4 * pow(m_rho, 6) * t - 2 * delta * pow(s, 2) * t +
6981 (s * (2 + 3 * delta + 8 * C4 * s) - 4 * t) * t +
6982 pow(
pion_mass, 2) * (-((-2 + delta) * s) + 8 * t)) +
6985 pow(
pion_mass, 2) * (-2 + delta + 16 * C4 * t) +
6986 t * (-6 + delta + 8 * C4 * (-2 * s + t)))) +
6987 eta1 * (2 * delta * pow(s, 2) * t +
6988 8 * C4 * pow(m_rho, 6) * (-2 * pow(
pion_mass, 2) + t) -
6990 (-4 * pow(
pion_mass, 4) - 4 * pow(t, 2) +
6991 2 * pow(
pion_mass, 2) * ((2 + delta) * s + 4 * t) +
6992 pow(s, 2) * (-2 + delta + 8 * C4 * t)) +
6994 (-8 * C4 * pow(
pion_mass, 4) + (-2 + delta) * s -
6995 4 * t * (1 + 2 * C4 * t) +
6996 8 * pow(
pion_mass, 2) * (1 + 2 * C4 * (s + t)))))) /
6997 (pow(m_rho, 2) * (-pow(a1_mass, 2) + t)) -
6998 (0.125 * (eta1 - eta2) *
6999 (pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) - pow(m_rho, 2) + s + t) *
7002 (4 * pow(m_rho, 2) - 8 * C4 * pow(m_rho, 4)) +
7003 8 * C4 * pow(m_rho, 6) * (s + t) -
7004 2 * delta * pow(s, 2) * (s + t) +
7005 pow(m_rho, 2) * ((6 + delta) * pow(s, 2) + 8 * s * t +
7006 4 * pow(t, 2) + 8 * C4 * pow(s, 2) * (s + t)) -
7008 (-((-6 + delta) * s) + 4 * t +
7009 8 * C4 * (2 * pow(s, 2) + 2 * s * t + pow(t, 2))) +
7011 (-8 * C4 * pow(m_rho, 6) + 2 * delta * pow(s, 2) -
7012 pow(m_rho, 2) * (s * (6 + delta + 8 * C4 * s) + 4 * t) +
7013 4 * pow(m_rho, 4) * (1 + 2 * C4 * (2 * s + t)))) +
7015 (-4 * pow(m_rho, 2) + 8 * C4 * pow(m_rho, 4)) -
7016 (-pow(m_rho, 2) + s + t) *
7017 (16 * C4 * pow(m_rho, 6) - 2 * delta * pow(s, 2) +
7019 (s * (6 + 3 * delta + 8 * C4 * s) + 4 * t) +
7020 pow(m_rho, 4) * (-10 + delta - 8 * C4 * (3 * s + t))) +
7022 (32 * C4 * pow(m_rho, 6) - 4 * delta * pow(s, 2) +
7024 (s * (14 + 5 * delta + 16 * C4 * s) + 8 * t) +
7026 (delta - 2 * (9 + 8 * C4 * (3 * s + t))))))) /
7027 (pow(m_rho, 2) * (pow(Gammaa1, 2) * pow(a1_mass, 2) +
7028 pow(pow(a1_mass, 2) - 2 * pow(
pion_mass, 2) -
7029 pow(m_rho, 2) + s + t,
7031 (16. * Pi * s * (-4 * pow(
pion_mass, 2) + s)));
7039 const double s,
const double m_rho) {
7047 const double spin_deg_factor = 1.0;
7050 const double tmin = t_mandelstam[1];
7051 const double tmax = t_mandelstam[0];
7056 (pow(
Const, 2) * pow(ghat, 4) *
7057 ((-0.03125 * pow(eta1 - 1. * eta2, 2) *
7059 (-2. * pow(a1_mass, 8) - 2. * pow(
pion_mass, 8) +
7060 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
7061 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
7063 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) -
7064 4. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s) +
7066 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
7067 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
7070 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
7071 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
7072 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
7074 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
7076 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
7077 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
7078 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
7081 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
7082 pow(
pion_mass, 4) * (6. * pow(m_rho, 2) + 2. * s))) +
7084 (1. * pow(a1_mass, 8) +
7086 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
7088 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
7089 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
7090 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
7093 2. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
7094 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
7095 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s)) +
7098 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
7099 2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s +
7101 (1. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s))))) /
7102 (1. * pow(a1_mass, 2) - 1. * tmin) -
7103 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
7104 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
7107 (0.25 * pow(-2. + delta, 2) * pow(
pion_mass, 2) * tmin) /
7109 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
7110 (eta2 * (-1. * pow(a1_mass, 2) + pow(m_rho, 2) - 2. * s) +
7114 (2. * C4 * pow(m_rho, 4) + pow(m_rho, 2) * (-3. - 4. * C4 * s) +
7115 s * (3. + 2. * C4 * s)) *
7117 (0.5 * pow(delta, 2) *
7118 (1. * pow(
pion_mass, 4) * pow(m_rho, 2) + 0.25 * pow(m_rho, 6) -
7119 0.75 * pow(m_rho, 4) * s + 0.125 * pow(m_rho, 2) * pow(s, 2) +
7122 (2.5 * pow(m_rho, 4) + 0.25 * pow(m_rho, 2) * s -
7123 0.75 * pow(s, 2))) *
7126 0.03125 * pow(eta1 - 1. * eta2, 2) *
7128 (-6. * pow(a1_mass, 4) - 12. * pow(
pion_mass, 4) +
7129 2. * pow(m_rho, 4) +
7130 pow(a1_mass, 2) * (16. * pow(
pion_mass, 2) - 8. * s) +
7131 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
7134 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
7136 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
7137 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
7138 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) -
7139 4. * pow(m_rho, 2) + 4. * s)) +
7141 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
7143 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
7144 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
7145 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) +
7146 4. * pow(m_rho, 2) + 4. * s))) *
7149 (0.6666666666666666 * C4 * pow(m_rho, 6) -
7150 0.08333333333333333 * pow(s, 2) +
7151 pow(m_rho, 4) * (-0.25 - 0.5 * C4 * s) +
7153 s * (0.08333333333333333 - 0.16666666666666666 * C4 * s) +
7155 (1. * C4 * pow(m_rho, 4) + 0.08333333333333333 * s +
7157 (-0.4166666666666667 - 0.3333333333333333 * C4 * s))) *
7160 (0.25 * (1. * eta1 - 1. * eta2) *
7162 (eta1 * (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
7163 pow(a1_mass, 2) * (1. - 2. * C4 * pow(m_rho, 2)) +
7164 pow(
pion_mass, 2) * (-2. + 4. * C4 * pow(m_rho, 2)) -
7165 2. * C4 * pow(s, 2)) +
7166 eta2 * (-1.5 * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
7167 pow(
pion_mass, 2) * (2. - 4. * C4 * pow(m_rho, 2)) +
7168 pow(a1_mass, 2) * (-1. + 2. * C4 * pow(m_rho, 2)) +
7169 0.5 * s - 4. * C4 * pow(m_rho, 2) * s +
7170 2. * C4 * pow(s, 2))) +
7172 (-1. * pow(a1_mass, 4) - 3. * pow(
pion_mass, 4) +
7173 1. * pow(m_rho, 4) +
7174 pow(a1_mass, 2) * (3. * pow(
pion_mass, 2) -
7175 1. * pow(m_rho, 2) - 1. * s) +
7176 0.25 * pow(m_rho, 2) * s - 0.75 * pow(s, 2) +
7177 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) + 1. * s)) +
7179 (1. * pow(a1_mass, 4) + 3. * pow(
pion_mass, 4) +
7180 0.5 * pow(m_rho, 4) +
7181 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 2. * s) -
7182 2. * pow(m_rho, 2) * s + 1. * pow(s, 2) +
7184 (-3. * pow(
pion_mass, 2) - 1.5 * pow(m_rho, 2) +
7188 0.0625 * (-2. + delta) * (eta1 - 1. * eta2) * eta2 * pow(tmin, 2) +
7189 (0.25 * pow(delta, 2) *
7190 (2. * pow(
pion_mass, 2) * pow(m_rho, 2) + 1. * pow(m_rho, 4) -
7191 0.75 * pow(m_rho, 2) * s - 0.25 * pow(s, 2)) *
7194 0.03125 * pow(eta1 - 1. * eta2, 3) *
7195 (eta2 * (-1. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
7196 1. * pow(m_rho, 2) - 1. * s) +
7197 eta1 * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
7198 1. * pow(m_rho, 2) + s)) *
7201 (1. * C4 * pow(m_rho, 4) + 0.08333333333333333 * s +
7203 (-0.4166666666666667 - 0.3333333333333333 * C4 * s)) *
7206 (0.125 * (1. * eta1 - 1. * eta2) *
7207 (pow(m_rho, 2) * (eta1 * (1. - 2. * C4 * pow(m_rho, 2)) +
7208 eta2 * (-1. + 2. * C4 * pow(m_rho, 2))) +
7209 delta * (eta2 * (-1. * pow(a1_mass, 2) + 3. * pow(
pion_mass, 2) -
7210 1. * pow(m_rho, 2) - 1. * s) +
7211 eta1 * (1. * pow(a1_mass, 2) - 3. * pow(
pion_mass, 2) -
7212 1.5 * pow(m_rho, 2) + 1.5 * s))) *
7215 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) * pow(tmin, 3) -
7216 (0.16666666666666666 * pow(delta, 2) * pow(tmin, 3)) /
7218 (0.08333333333333333 * delta * pow(1. * eta1 - 1. * eta2, 2) *
7221 (0.03125 * pow(eta1 - 1. * eta2, 2) *
7223 (-2. * pow(a1_mass, 8) - 2. * pow(
pion_mass, 8) +
7224 2. * pow(
pion_mass, 4) * pow(m_rho, 4) +
7225 pow(a1_mass, 6) * (8. * pow(
pion_mass, 2) - 4. * s) +
7227 (8. * pow(
pion_mass, 4) - 8. * pow(m_rho, 4) -
7228 4. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s) +
7230 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
7231 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
7234 (1. * pow(a1_mass, 8) + 1. * pow(
pion_mass, 8) -
7235 2. * pow(
pion_mass, 6) * pow(m_rho, 2) +
7236 1. * pow(
pion_mass, 4) * pow(m_rho, 4) +
7238 (-4. * pow(
pion_mass, 2) + 2. * pow(m_rho, 2) + 2. * s) +
7240 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
7241 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
7242 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
7247 pow(
pion_mass, 4) * (6. * pow(m_rho, 2) + 2. * s))) +
7249 (1. * pow(a1_mass, 8) +
7251 (-4. * pow(
pion_mass, 2) - 2. * pow(m_rho, 2) + 2. * s) +
7253 (6. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
7254 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
7255 4. * pow(m_rho, 2) * s + 2. * pow(s, 2)) +
7260 pow(m_rho, 2) * (2. * pow(m_rho, 2) - 2. * s) * s +
7261 pow(
pion_mass, 4) * (-6. * pow(m_rho, 2) + 2. * s)) +
7264 2. * pow(
pion_mass, 4) * pow(m_rho, 2) -
7265 2. * pow(m_rho, 6) + 2. * pow(m_rho, 4) * s +
7267 (1. * pow(m_rho, 4) - 2. * pow(m_rho, 2) * s))))) /
7268 (1. * pow(a1_mass, 2) - 1. * tmax) +
7269 (1. * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
7270 (1. * pow(
pion_mass, 2) - 0.25 * pow(m_rho, 2))) /
7273 (0.25 * pow(-2. + delta, 2) * pow(
pion_mass, 2) * tmax) /
7275 0.125 * (-2. + delta) * (eta1 - 1. * eta2) *
7276 (eta2 * (-1. * pow(a1_mass, 2) + pow(m_rho, 2) - 2. * s) +
7280 (2. * C4 * pow(m_rho, 4) + pow(m_rho, 2) * (-3. - 4. * C4 * s) +
7281 s * (3. + 2. * C4 * s)) *
7283 (0.5 * pow(delta, 2) *
7284 (1. * pow(
pion_mass, 4) * pow(m_rho, 2) + 0.25 * pow(m_rho, 6) -
7285 0.75 * pow(m_rho, 4) * s + 0.125 * pow(m_rho, 2) * pow(s, 2) +
7288 (2.5 * pow(m_rho, 4) + 0.25 * pow(m_rho, 2) * s -
7289 0.75 * pow(s, 2))) *
7292 0.03125 * pow(eta1 - 1. * eta2, 2) *
7294 (-6. * pow(a1_mass, 4) - 12. * pow(
pion_mass, 4) +
7295 2. * pow(m_rho, 4) +
7296 pow(a1_mass, 2) * (16. * pow(
pion_mass, 2) - 8. * s) +
7297 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
7300 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
7302 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
7303 4. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
7304 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) -
7305 4. * pow(m_rho, 2) + 4. * s)) +
7307 (3. * pow(a1_mass, 4) + 6. * pow(
pion_mass, 4) +
7309 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
7310 2. * pow(m_rho, 2) * s + 2. * pow(s, 2) +
7311 pow(a1_mass, 2) * (-8. * pow(
pion_mass, 2) +
7312 4. * pow(m_rho, 2) + 4. * s))) *
7315 (0.6666666666666666 * C4 * pow(m_rho, 6) -
7316 0.08333333333333333 * pow(s, 2) +
7317 pow(m_rho, 4) * (-0.25 - 0.5 * C4 * s) +
7319 s * (0.08333333333333333 - 0.16666666666666666 * C4 * s) +
7321 (1. * C4 * pow(m_rho, 4) + 0.08333333333333333 * s +
7323 (-0.4166666666666667 - 0.3333333333333333 * C4 * s))) *
7326 (0.25 * (1. * eta1 - 1. * eta2) *
7328 (eta1 * (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
7329 pow(a1_mass, 2) * (1. - 2. * C4 * pow(m_rho, 2)) +
7330 pow(
pion_mass, 2) * (-2. + 4. * C4 * pow(m_rho, 2)) -
7331 2. * C4 * pow(s, 2)) +
7332 eta2 * (-1.5 * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
7333 pow(
pion_mass, 2) * (2. - 4. * C4 * pow(m_rho, 2)) +
7334 pow(a1_mass, 2) * (-1. + 2. * C4 * pow(m_rho, 2)) +
7335 0.5 * s - 4. * C4 * pow(m_rho, 2) * s +
7336 2. * C4 * pow(s, 2))) +
7338 (-1. * pow(a1_mass, 4) - 3. * pow(
pion_mass, 4) +
7339 1. * pow(m_rho, 4) +
7340 pow(a1_mass, 2) * (3. * pow(
pion_mass, 2) -
7341 1. * pow(m_rho, 2) - 1. * s) +
7342 0.25 * pow(m_rho, 2) * s - 0.75 * pow(s, 2) +
7343 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) + 1. * s)) +
7345 (1. * pow(a1_mass, 4) + 3. * pow(
pion_mass, 4) +
7346 0.5 * pow(m_rho, 4) +
7347 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 2. * s) -
7348 2. * pow(m_rho, 2) * s + 1. * pow(s, 2) +
7350 (-3. * pow(
pion_mass, 2) - 1.5 * pow(m_rho, 2) +
7354 0.0625 * (-2. + delta) * (eta1 - 1. * eta2) * eta2 * pow(tmax, 2) -
7355 (0.25 * pow(delta, 2) *
7356 (2. * pow(
pion_mass, 2) * pow(m_rho, 2) + 1. * pow(m_rho, 4) -
7357 0.75 * pow(m_rho, 2) * s - 0.25 * pow(s, 2)) *
7360 0.03125 * pow(eta1 - 1. * eta2, 3) *
7361 (eta2 * (-1. * pow(a1_mass, 2) + 2. * pow(
pion_mass, 2) -
7362 1. * pow(m_rho, 2) - 1. * s) +
7363 eta1 * (pow(a1_mass, 2) - 2. * pow(
pion_mass, 2) -
7364 1. * pow(m_rho, 2) + s)) *
7367 (1. * C4 * pow(m_rho, 4) + 0.08333333333333333 * s +
7369 (-0.4166666666666667 - 0.3333333333333333 * C4 * s)) *
7372 (0.125 * (1. * eta1 - 1. * eta2) *
7373 (pow(m_rho, 2) * (eta1 * (1. - 2. * C4 * pow(m_rho, 2)) +
7374 eta2 * (-1. + 2. * C4 * pow(m_rho, 2))) +
7375 delta * (eta2 * (-1. * pow(a1_mass, 2) + 3. * pow(
pion_mass, 2) -
7376 1. * pow(m_rho, 2) - 1. * s) +
7377 eta1 * (1. * pow(a1_mass, 2) - 3. * pow(
pion_mass, 2) -
7378 1.5 * pow(m_rho, 2) + 1.5 * s))) *
7381 0.010416666666666666 * pow(eta1 - 1. * eta2, 4) * pow(tmax, 3) +
7382 (0.16666666666666666 * pow(delta, 2) * pow(tmax, 3)) /
7384 (0.08333333333333333 * delta * pow(1. * eta1 - 1. * eta2, 2) *
7388 pow(pow(m_rho, 2) - 1. * s, 2) -
7389 (5. * pow(
pion_mass, 2) * pow(m_rho, 2) * tmin *
7391 pow(pow(m_rho, 2) - 1. * s, 2) -
7392 (0.5 * pow(m_rho, 4) * tmin *
HeavisideTheta(-m_rho + sqrt(s))) /
7393 pow(pow(m_rho, 2) - 1. * s, 2) -
7396 (pow(m_rho, 2) - 1. * s) +
7397 (5.0000100000000005 * delta * pow(
pion_mass, 2) * tmin *
7399 (pow(m_rho, 2) - 1. * s) -
7400 (1.2500010000000001 * pow(m_rho, 2) * tmin *
7402 (pow(m_rho, 2) - 1. * s) +
7403 (0.500001 * delta * pow(m_rho, 2) * tmin *
7405 (pow(m_rho, 2) - 1. * s) +
7406 (6. * C4 * pow(
pion_mass, 2) * pow(m_rho, 2) * tmin *
7408 (pow(m_rho, 2) - 1. * s) +
7409 (3. * C4 * pow(m_rho, 4) * tmin *
7411 (pow(m_rho, 2) - 1. * s) +
7412 (5. * delta * pow(
pion_mass, 2) * s * tmin *
7414 pow(pow(m_rho, 2) - 1. * s, 2) +
7415 (1.75 * pow(m_rho, 2) * s * tmin *
7417 pow(pow(m_rho, 2) - 1. * s, 2) +
7418 (0.5 * delta * pow(m_rho, 2) * s * tmin *
7420 pow(pow(m_rho, 2) - 1. * s, 2) +
7422 (pow(m_rho, 2) - 1. * s) -
7423 (1.0000005 * delta * s * tmin *
HeavisideTheta(-m_rho + sqrt(s))) /
7424 (pow(m_rho, 2) - 1. * s) -
7425 (0.2500005 * pow(delta, 2) * s * tmin *
7427 (pow(m_rho, 2) - 1. * s) -
7428 (2.000001 * C4 * pow(
pion_mass, 2) * s * tmin *
7430 (pow(m_rho, 2) - 1. * s) -
7431 (3. * C4 * delta * pow(
pion_mass, 2) * s * tmin *
7433 (pow(m_rho, 2) - 1. * s) -
7434 (3.9999899999999995 * C4 * pow(m_rho, 2) * s * tmin *
7436 (pow(m_rho, 2) - 1. * s) -
7437 (1.5 * C4 * delta * pow(m_rho, 2) * s * tmin *
7439 (pow(m_rho, 2) - 1. * s) -
7440 (1.75 * delta * pow(s, 2) * tmin *
7442 pow(pow(m_rho, 2) - 1. * s, 2) -
7443 (0.125 * pow(delta, 2) * pow(s, 2) * tmin *
7445 pow(pow(m_rho, 2) - 1. * s, 2) -
7446 (0.5 * pow(delta, 2) * pow(
pion_mass, 4) * pow(s, 2) * tmin *
7448 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7449 (0.999999 * C4 * pow(s, 2) * tmin *
7451 (pow(m_rho, 2) - 1. * s) +
7452 (1.9999949999999997 * C4 * delta * pow(s, 2) * tmin *
7454 (pow(m_rho, 2) - 1. * s) -
7455 (1. * delta * pow(
pion_mass, 2) * pow(s, 3) * tmin *
7457 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7458 (0.25 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 4) * tmin *
7460 (pow(m_rho, 6) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7461 (0.25 * delta * pow(s, 4) * tmin *
7463 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7464 (0.0625 * pow(delta, 2) * pow(s, 5) * tmin *
7466 (pow(m_rho, 6) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7467 (2. * delta * pow(
pion_mass, 4) * s * tmin *
7469 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7470 (1. * pow(
pion_mass, 2) * pow(s, 2) * tmin *
7472 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7473 (1.25 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 2) * tmin *
7475 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7477 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7478 (0.4375 * pow(delta, 2) * pow(s, 3) * tmin *
7480 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7481 (2.000001 * delta * pow(
pion_mass, 4) * tmin *
7483 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7484 (0.500001 * pow(
pion_mass, 2) * s * tmin *
7486 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7487 (1.4999993999999999 * delta * pow(
pion_mass, 2) * s * tmin *
7489 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7490 (2.5000050000000003 * pow(delta, 2) * pow(
pion_mass, 2) * s * tmin *
7492 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7493 (0.2499999 * pow(s, 2) * tmin *
HeavisideTheta(-m_rho + sqrt(s))) /
7494 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7495 (0.9999998999999999 * delta * pow(s, 2) * tmin *
7497 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7498 (0.8125005000000001 * pow(delta, 2) * pow(s, 2) * tmin *
7500 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7501 (1.0000005 * C4 * delta * pow(
pion_mass, 2) * pow(s, 2) * tmin *
7503 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7504 (0.4999995 * C4 * delta * pow(s, 3) * tmin *
7506 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7507 (1.0000005 * pow(delta, 2) * pow(
pion_mass, 4) * s * tmin *
7509 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7510 (1.5000015000000002 * delta * pow(
pion_mass, 2) * pow(s, 2) * tmin *
7512 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7513 (0.12499995 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 2) * tmin *
7515 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7516 (0.49999994999999997 * delta * pow(s, 3) * tmin *
7518 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7519 (0.12499995 * pow(delta, 2) * pow(s, 3) * tmin *
7521 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7522 (0.6250005000000001 * pow(delta, 2) * pow(
pion_mass, 2) *
7524 (pow(m_rho, 8) - 1. * pow(m_rho, 6) * s) -
7525 (0.1875 * pow(delta, 2) * pow(s, 4) * tmin *
7527 (pow(m_rho, 8) - 1. * pow(m_rho, 6) * s) +
7528 (2. * pow(
pion_mass, 2) * pow(tmin, 2) *
7530 pow(pow(m_rho, 2) - 1. * s, 2) +
7531 (1. * pow(m_rho, 2) * pow(tmin, 2) *
7533 pow(pow(m_rho, 2) - 1. * s, 2) +
7535 (pow(m_rho, 2) - 1. * s) -
7536 (1.0000005 * delta * pow(tmin, 2) *
7538 (pow(m_rho, 2) - 1. * s) -
7539 (3. * C4 * pow(m_rho, 2) * pow(tmin, 2) *
7541 (pow(m_rho, 2) - 1. * s) -
7543 pow(pow(m_rho, 2) - 1. * s, 2) -
7544 (1. * delta * s * pow(tmin, 2) *
HeavisideTheta(-m_rho + sqrt(s))) /
7545 pow(pow(m_rho, 2) - 1. * s, 2) +
7546 (1.0000005 * C4 * s * pow(tmin, 2) *
7548 (pow(m_rho, 2) - 1. * s) +
7549 (1.5 * C4 * delta * s * pow(tmin, 2) *
7551 (pow(m_rho, 2) - 1. * s) +
7552 (0.5 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 2) *
7554 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7555 (0.25 * pow(delta, 2) * pow(s, 3) * pow(tmin, 2) *
7557 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7558 (2. * delta * pow(
pion_mass, 2) * s * pow(tmin, 2) *
7560 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7561 (1. * delta * pow(s, 2) * pow(tmin, 2) *
7563 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7564 (0.25 * pow(delta, 2) * pow(s, 2) * pow(tmin, 2) *
7566 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7567 (1.9999949999999997 * delta * pow(
pion_mass, 2) * pow(tmin, 2) *
7569 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7570 (0.2500005 * s * pow(tmin, 2) *
HeavisideTheta(-m_rho + sqrt(s))) /
7571 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7572 (0.24999974999999997 * delta * s * pow(tmin, 2) *
7574 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7575 (0.50000025 * pow(delta, 2) * s * pow(tmin, 2) *
7577 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7578 (0.50000025 * C4 * delta * pow(s, 2) * pow(tmin, 2) *
7580 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7581 (0.9999974999999999 * pow(delta, 2) * pow(
pion_mass, 2) *
7583 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7584 (0.2500002 * delta * pow(s, 2) * pow(tmin, 2) *
7586 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7587 (0.43749974999999997 * pow(delta, 2) * pow(s, 2) * pow(tmin, 2) *
7589 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7590 (0.062499975 * pow(delta, 2) * pow(s, 3) * pow(tmin, 2) *
7592 (pow(m_rho, 8) - 1. * pow(m_rho, 6) * s) -
7593 (0.6666666666666666 * pow(tmin, 3) *
7595 pow(pow(m_rho, 2) - 1. * s, 2) -
7596 (0.16666666666666666 * pow(delta, 2) * pow(s, 2) * pow(tmin, 3) *
7598 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7599 (0.6666666666666666 * delta * s * pow(tmin, 3) *
7601 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7602 (0.666667 * delta * pow(tmin, 3) *
7604 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7605 (0.3333335 * pow(delta, 2) * s * pow(tmin, 3) *
7607 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7609 pow(pow(m_rho, 2) - 1. * s, 2) +
7610 (5. * pow(
pion_mass, 2) * pow(m_rho, 2) * tmax *
7612 pow(pow(m_rho, 2) - 1. * s, 2) +
7613 (0.5 * pow(m_rho, 4) * tmax *
HeavisideTheta(-m_rho + sqrt(s))) /
7614 pow(pow(m_rho, 2) - 1. * s, 2) +
7617 (pow(m_rho, 2) - 1. * s) -
7618 (5.0000100000000005 * delta * pow(
pion_mass, 2) * tmax *
7620 (pow(m_rho, 2) - 1. * s) +
7621 (1.2500010000000001 * pow(m_rho, 2) * tmax *
7623 (pow(m_rho, 2) - 1. * s) -
7624 (0.500001 * delta * pow(m_rho, 2) * tmax *
7626 (pow(m_rho, 2) - 1. * s) -
7627 (6. * C4 * pow(
pion_mass, 2) * pow(m_rho, 2) * tmax *
7629 (pow(m_rho, 2) - 1. * s) -
7630 (3. * C4 * pow(m_rho, 4) * tmax *
7632 (pow(m_rho, 2) - 1. * s) -
7633 (5. * delta * pow(
pion_mass, 2) * s * tmax *
7635 pow(pow(m_rho, 2) - 1. * s, 2) -
7636 (1.75 * pow(m_rho, 2) * s * tmax *
7638 pow(pow(m_rho, 2) - 1. * s, 2) -
7639 (0.5 * delta * pow(m_rho, 2) * s * tmax *
7641 pow(pow(m_rho, 2) - 1. * s, 2) -
7643 (pow(m_rho, 2) - 1. * s) +
7644 (1.0000005 * delta * s * tmax *
HeavisideTheta(-m_rho + sqrt(s))) /
7645 (pow(m_rho, 2) - 1. * s) +
7646 (0.2500005 * pow(delta, 2) * s * tmax *
7648 (pow(m_rho, 2) - 1. * s) +
7649 (2.000001 * C4 * pow(
pion_mass, 2) * s * tmax *
7651 (pow(m_rho, 2) - 1. * s) +
7652 (3. * C4 * delta * pow(
pion_mass, 2) * s * tmax *
7654 (pow(m_rho, 2) - 1. * s) +
7655 (3.9999899999999995 * C4 * pow(m_rho, 2) * s * tmax *
7657 (pow(m_rho, 2) - 1. * s) +
7658 (1.5 * C4 * delta * pow(m_rho, 2) * s * tmax *
7660 (pow(m_rho, 2) - 1. * s) +
7661 (1.75 * delta * pow(s, 2) * tmax *
7663 pow(pow(m_rho, 2) - 1. * s, 2) +
7664 (0.125 * pow(delta, 2) * pow(s, 2) * tmax *
7666 pow(pow(m_rho, 2) - 1. * s, 2) +
7667 (0.5 * pow(delta, 2) * pow(
pion_mass, 4) * pow(s, 2) * tmax *
7669 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7670 (0.999999 * C4 * pow(s, 2) * tmax *
7672 (pow(m_rho, 2) - 1. * s) -
7673 (1.9999949999999997 * C4 * delta * pow(s, 2) * tmax *
7675 (pow(m_rho, 2) - 1. * s) +
7676 (1. * delta * pow(
pion_mass, 2) * pow(s, 3) * tmax *
7678 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7679 (0.25 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 4) * tmax *
7681 (pow(m_rho, 6) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7682 (0.25 * delta * pow(s, 4) * tmax *
7684 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7685 (0.0625 * pow(delta, 2) * pow(s, 5) * tmax *
7687 (pow(m_rho, 6) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7688 (2. * delta * pow(
pion_mass, 4) * s * tmax *
7690 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7691 (1. * pow(
pion_mass, 2) * pow(s, 2) * tmax *
7693 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7694 (1.25 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 2) * tmax *
7696 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7698 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7699 (0.4375 * pow(delta, 2) * pow(s, 3) * tmax *
7701 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7702 (2.000001 * delta * pow(
pion_mass, 4) * tmax *
7704 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7705 (0.500001 * pow(
pion_mass, 2) * s * tmax *
7707 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7708 (1.4999993999999999 * delta * pow(
pion_mass, 2) * s * tmax *
7710 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7711 (2.5000050000000003 * pow(delta, 2) * pow(
pion_mass, 2) * s * tmax *
7713 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7714 (0.2499999 * pow(s, 2) * tmax *
HeavisideTheta(-m_rho + sqrt(s))) /
7715 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7716 (0.9999998999999999 * delta * pow(s, 2) * tmax *
7718 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7719 (0.8125005000000001 * pow(delta, 2) * pow(s, 2) * tmax *
7721 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7722 (1.0000005 * C4 * delta * pow(
pion_mass, 2) * pow(s, 2) * tmax *
7724 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7725 (0.4999995 * C4 * delta * pow(s, 3) * tmax *
7727 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7728 (1.0000005 * pow(delta, 2) * pow(
pion_mass, 4) * s * tmax *
7730 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7731 (1.5000015000000002 * delta * pow(
pion_mass, 2) * pow(s, 2) * tmax *
7733 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7734 (0.12499995 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 2) * tmax *
7736 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7737 (0.49999994999999997 * delta * pow(s, 3) * tmax *
7739 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7740 (0.12499995 * pow(delta, 2) * pow(s, 3) * tmax *
7742 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7743 (0.6250005000000001 * pow(delta, 2) * pow(
pion_mass, 2) *
7745 (pow(m_rho, 8) - 1. * pow(m_rho, 6) * s) +
7746 (0.1875 * pow(delta, 2) * pow(s, 4) * tmax *
7748 (pow(m_rho, 8) - 1. * pow(m_rho, 6) * s) -
7749 (2. * pow(
pion_mass, 2) * pow(tmax, 2) *
7751 pow(pow(m_rho, 2) - 1. * s, 2) -
7752 (1. * pow(m_rho, 2) * pow(tmax, 2) *
7754 pow(pow(m_rho, 2) - 1. * s, 2) -
7756 (pow(m_rho, 2) - 1. * s) +
7757 (1.0000005 * delta * pow(tmax, 2) *
7759 (pow(m_rho, 2) - 1. * s) +
7760 (3. * C4 * pow(m_rho, 2) * pow(tmax, 2) *
7762 (pow(m_rho, 2) - 1. * s) +
7764 pow(pow(m_rho, 2) - 1. * s, 2) +
7765 (1. * delta * s * pow(tmax, 2) *
HeavisideTheta(-m_rho + sqrt(s))) /
7766 pow(pow(m_rho, 2) - 1. * s, 2) -
7767 (1.0000005 * C4 * s * pow(tmax, 2) *
7769 (pow(m_rho, 2) - 1. * s) -
7770 (1.5 * C4 * delta * s * pow(tmax, 2) *
7772 (pow(m_rho, 2) - 1. * s) -
7773 (0.5 * pow(delta, 2) * pow(
pion_mass, 2) * pow(s, 2) *
7775 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7776 (0.25 * pow(delta, 2) * pow(s, 3) * pow(tmax, 2) *
7778 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) +
7779 (2. * delta * pow(
pion_mass, 2) * s * pow(tmax, 2) *
7781 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7782 (1. * delta * pow(s, 2) * pow(tmax, 2) *
7784 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7785 (0.25 * pow(delta, 2) * pow(s, 2) * pow(tmax, 2) *
7787 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) +
7788 (1.9999949999999997 * delta * pow(
pion_mass, 2) * pow(tmax, 2) *
7790 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7791 (0.2500005 * s * pow(tmax, 2) *
HeavisideTheta(-m_rho + sqrt(s))) /
7792 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7793 (0.24999974999999997 * delta * s * pow(tmax, 2) *
7795 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7796 (0.50000025 * pow(delta, 2) * s * pow(tmax, 2) *
7798 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7799 (0.50000025 * C4 * delta * pow(s, 2) * pow(tmax, 2) *
7801 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) -
7802 (0.9999974999999999 * pow(delta, 2) * pow(
pion_mass, 2) *
7804 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7805 (0.2500002 * delta * pow(s, 2) * pow(tmax, 2) *
7807 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7808 (0.43749974999999997 * pow(delta, 2) * pow(s, 2) * pow(tmax, 2) *
7810 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) +
7811 (0.062499975 * pow(delta, 2) * pow(s, 3) * pow(tmax, 2) *
7813 (pow(m_rho, 8) - 1. * pow(m_rho, 6) * s) +
7814 (0.6666666666666666 * pow(tmax, 3) *
7816 pow(pow(m_rho, 2) - 1. * s, 2) +
7817 (0.16666666666666666 * pow(delta, 2) * pow(s, 2) * pow(tmax, 3) *
7819 (pow(m_rho, 4) * pow(pow(m_rho, 2) - 1. * s, 2)) -
7820 (0.6666666666666666 * delta * s * pow(tmax, 3) *
7822 pow(pow(m_rho, 3) - 1. * m_rho * s, 2) -
7823 (0.666667 * delta * pow(tmax, 3) *
7825 (pow(m_rho, 4) - 1. * pow(m_rho, 2) * s) +
7826 (0.3333335 * pow(delta, 2) * s * pow(tmax, 3) *
7828 (pow(m_rho, 6) - 1. * pow(m_rho, 4) * s) -
7829 0.0625 * pow(eta1 - 1. * eta2, 2) *
7831 (-4. * pow(a1_mass, 6) +
7832 pow(a1_mass, 4) * (12. * pow(
pion_mass, 2) - 6. * s) +
7834 (4. * pow(
pion_mass, 4) - 4. * pow(m_rho, 4) -
7836 2. * pow(m_rho, 2) * s) +
7838 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
7839 8. * pow(
pion_mass, 2) * s + 4. * pow(m_rho, 2) * s -
7842 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) +
7844 pow(m_rho, 2) * (pow(m_rho, 2) - 1. * s) * s +
7845 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) + s) +
7846 pow(a1_mass, 4) * (-6. * pow(
pion_mass, 2) -
7847 3. * pow(m_rho, 2) + 3. * s) +
7849 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
7850 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
7851 4. * pow(m_rho, 2) * s + 2. * pow(s, 2))) +
7853 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) -
7854 1. * pow(
pion_mass, 2) * pow(m_rho, 2) * s +
7855 pow(
pion_mass, 4) * (3. * pow(m_rho, 2) + s) +
7856 pow(a1_mass, 4) * (-6. * pow(
pion_mass, 2) +
7857 3. * pow(m_rho, 2) + 3. * s) +
7859 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
7860 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
7861 2. * pow(m_rho, 2) * s + 2. * pow(s, 2)))) *
7862 log(fabs(-1. * pow(a1_mass, 2) + tmin)) +
7863 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
7864 (eta2 * (-0.5 * pow(a1_mass, 6) - 0.5 * pow(
pion_mass, 6) +
7865 0.5 * pow(
pion_mass, 4) * pow(m_rho, 2) +
7866 pow(a1_mass, 4) * (0.5 * pow(
pion_mass, 2) +
7867 0.5 * pow(m_rho, 2) - 1. * s) +
7869 (0.5 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) -
7872 (pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
7874 (1. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
7875 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 0.5 * s) -
7876 0.5 * pow(m_rho, 2) * s) +
7878 (-2. * pow(
pion_mass, 4) - 0.5 * pow(m_rho, 2) * s +
7879 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
7880 log(fabs(-1. * pow(a1_mass, 2) + tmin))) /
7881 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) -
7882 (0.25 * (1. * eta1 - 1. * eta2) *
7884 (1. * pow(a1_mass, 6) - 1. * pow(
pion_mass, 6) +
7886 (-2.5 * pow(m_rho, 2) + 0.5 * s) +
7888 s * (-0.5 * pow(m_rho, 2) + 1. * s) +
7889 pow(a1_mass, 4) * (-3. * pow(
pion_mass, 2) -
7890 1.5 * pow(m_rho, 2) + 1.5 * s) +
7891 s * (0.5 * pow(m_rho, 4) -
7892 0.25 * pow(m_rho, 2) * s - 0.25 * pow(s, 2)) +
7894 (3. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 4) +
7896 (4. * pow(m_rho, 2) - 2. * s) -
7897 2. * pow(m_rho, 2) * s + 1. * pow(s, 2))) +
7899 (-1. * pow(a1_mass, 6) +
7900 pow(a1_mass, 4) * (3. * pow(
pion_mass, 2) -
7901 1. * pow(m_rho, 2) - 1. * s) +
7903 (1. * pow(
pion_mass, 4) - 0.5 * pow(m_rho, 4) +
7904 0.25 * pow(m_rho, 2) * s - 0.25 * pow(s, 2)) +
7906 (-3. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
7907 0.25 * pow(m_rho, 2) * s - 0.75 * pow(s, 2) +
7909 (1. * pow(m_rho, 2) + 1. * s)))) +
7911 (eta2 * (pow(a1_mass, 4) * (-1. + 2. * C4 * pow(m_rho, 2)) +
7913 (0.5 * pow(m_rho, 2) +
7915 (-1. + 2. * C4 * pow(m_rho, 2)) +
7918 (2. * C4 * pow(m_rho, 4) +
7920 (2. - 4. * C4 * pow(m_rho, 2)) +
7921 pow(m_rho, 2) * (-1.5 - 4. * C4 * s) +
7922 s * (0.5 + 2. * C4 * s))) +
7924 (pow(a1_mass, 4) * (1. - 2. * C4 * pow(m_rho, 2)) +
7925 pow(
pion_mass, 4) * (1. - 2. * C4 * pow(m_rho, 2)) +
7926 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s +
7928 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
7930 (-2. + 4. * C4 * pow(m_rho, 2)) -
7931 2. * C4 * pow(s, 2)) +
7933 (-4. * C4 * pow(m_rho, 4) -
7934 1. * s + pow(m_rho, 2) * (2. + 4. * C4 * s))))) *
7935 log(fabs(-1. * pow(a1_mass, 2) + tmin))) /
7940 (0.25 * pow(m_rho, 6) + 1.5 * pow(m_rho, 4) * s -
7941 0.125 * delta * pow(m_rho, 4) * s -
7942 0.75 * pow(m_rho, 2) * pow(s, 2) -
7943 0.75 * delta * pow(m_rho, 2) * pow(s, 2) +
7944 0.375 * delta * pow(s, 3) +
7946 (-2. * pow(m_rho, 2) + 1. * delta * s) +
7948 (-6. * pow(m_rho, 2) + 3. * delta * s) +
7950 (-3. * pow(m_rho, 4) +
7951 (3. + 1.5 * delta) * pow(m_rho, 2) * s -
7952 1.5 * delta * pow(s, 2)) +
7954 (0.5 * pow(m_rho, 4) +
7955 (-2.5 - 0.25 * delta) * pow(m_rho, 2) * s +
7956 1.25 * delta * pow(s, 2) +
7958 (6. * pow(m_rho, 2) - 3. * delta * s))) +
7960 (0.5 * pow(m_rho, 6) - 2. * pow(m_rho, 4) * s -
7961 0.25 * delta * pow(m_rho, 4) * s +
7962 0.5 * pow(m_rho, 2) * pow(s, 2) +
7963 1. * delta * pow(m_rho, 2) * pow(s, 2) -
7964 0.25 * delta * pow(s, 3) +
7966 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
7968 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
7970 (4. * pow(m_rho, 4) +
7971 (-2. - 2. * delta) * pow(m_rho, 2) * s +
7972 1. * delta * pow(s, 2)) +
7974 (-1.5 * pow(m_rho, 4) +
7975 (1.5 + 0.75 * delta) * pow(m_rho, 2) * s -
7976 0.75 * delta * pow(s, 2) +
7978 (-3. * pow(m_rho, 2) + 1.5 * delta * s))) +
7980 (-0.75 * pow(m_rho, 6) + 0.5 * pow(m_rho, 4) * s +
7981 0.375 * delta * pow(m_rho, 4) * s +
7982 0.25 * pow(m_rho, 2) * pow(s, 2) -
7983 0.25 * delta * pow(m_rho, 2) * pow(s, 2) -
7984 0.125 * delta * pow(s, 3) +
7986 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
7988 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
7990 (-1. * pow(m_rho, 4) +
7991 (-1. + 0.5 * delta) * pow(m_rho, 2) * s +
7992 0.5 * delta * pow(s, 2)) +
7994 (1. * pow(m_rho, 4) +
7995 (1. - 0.5 * delta) * pow(m_rho, 2) * s -
7999 (-3. * pow(m_rho, 2) + 1.5 * delta * s)))) *
8003 (0.5 * pow(m_rho, 4) - 2.5 * pow(m_rho, 2) * s -
8004 0.25 * delta * pow(m_rho, 2) * s +
8005 1.25 * delta * pow(s, 2) +
8007 (6. * pow(m_rho, 2) - 3. * delta * s) +
8009 (-2. * pow(m_rho, 2) + 1. * delta * s)) +
8011 (-1.5 * pow(m_rho, 4) + 1.5 * pow(m_rho, 2) * s +
8012 0.75 * delta * pow(m_rho, 2) * s -
8013 0.75 * delta * pow(s, 2) +
8015 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8017 (-3. * pow(m_rho, 2) + 1.5 * delta * s)) +
8019 (1. * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s -
8020 0.5 * delta * pow(m_rho, 2) * s -
8021 0.5 * delta * pow(s, 2) +
8023 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8025 (-3. * pow(m_rho, 2) + 1.5 * delta * s))) *
8027 0.16666666666666666 *
8028 (pow(eta1, 2) * (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8029 pow(eta2, 2) * (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8030 eta1 * eta2 * (-2. * pow(m_rho, 2) + 1. * delta * s)) *
8035 (2. * pow(m_rho, 2) - 1. * delta * s) +
8037 (-2. * pow(m_rho, 2) + 1. * delta * s) +
8039 (2.5 * pow(m_rho, 4) +
8040 (-0.5 - 1.25 * delta) * pow(m_rho, 2) * s +
8041 0.25 * delta * pow(s, 2)) +
8042 s * (-0.25 * pow(m_rho, 6) +
8043 0.125 * delta * pow(m_rho, 4) * s +
8044 0.25 * pow(m_rho, 2) * pow(s, 2) -
8045 0.125 * delta * pow(s, 3)) +
8047 (-0.25 * pow(m_rho, 6) +
8048 (0.5 + 0.125 * delta) * pow(m_rho, 4) * s +
8049 (-1.25 - 0.25 * delta) * pow(m_rho, 2) *
8054 (0.5 * pow(m_rho, 4) +
8055 (-2.5 - 0.25 * delta) * pow(m_rho, 2) * s +
8056 1.25 * delta * pow(s, 2) +
8058 (6. * pow(m_rho, 2) - 3. * delta * s)) +
8060 (0.25 * pow(m_rho, 6) +
8061 (1.5 - 0.125 * delta) * pow(m_rho, 4) * s +
8062 (-0.75 - 0.75 * delta) * pow(m_rho, 2) *
8064 0.375 * delta * pow(s, 3) +
8066 (-6. * pow(m_rho, 2) + 3. * delta * s) +
8067 pow(
pion_mass, 2) * (-3. * pow(m_rho, 4) +
8068 (3. + 1.5 * delta) *
8070 1.5 * delta * pow(s, 2)))) +
8073 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8075 (0.25 * pow(m_rho, 6) +
8076 (-0.5 - 0.125 * delta) * pow(m_rho, 4) * s +
8077 (0.25 + 0.25 * delta) * pow(m_rho, 2) * pow(s, 2) -
8081 (-1. * pow(m_rho, 2) + 0.5 * delta * s)) +
8083 (1. * pow(m_rho, 4) +
8084 (1. - 0.5 * delta) * pow(m_rho, 2) * s -
8088 (-3. * pow(m_rho, 2) + 1.5 * delta * s)) +
8090 (-0.75 * pow(m_rho, 6) +
8091 (0.5 + 0.375 * delta) * pow(m_rho, 4) * s +
8092 (0.25 - 0.25 * delta) * pow(m_rho, 2) * pow(s, 2) -
8093 0.125 * delta * pow(s, 3) +
8095 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
8096 pow(
pion_mass, 2) * (-1. * pow(m_rho, 4) +
8097 (-1. + 0.5 * delta) *
8099 0.5 * delta * pow(s, 2)))) +
8102 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8104 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8106 (-1. * pow(m_rho, 2) + 0.5 * delta * s) +
8108 (-2.5 * pow(m_rho, 4) +
8109 (0.5 + 1.25 * delta) * pow(m_rho, 2) * s -
8110 0.25 * delta * pow(s, 2)) +
8111 s * (0.25 * pow(m_rho, 6) -
8112 0.125 * delta * pow(m_rho, 4) * s -
8113 0.25 * pow(m_rho, 2) * pow(s, 2) +
8114 0.125 * delta * pow(s, 3)) +
8116 (-1.5 * pow(m_rho, 4) +
8117 (1.5 + 0.75 * delta) * pow(m_rho, 2) * s -
8118 0.75 * delta * pow(s, 2) +
8120 (-3. * pow(m_rho, 2) + 1.5 * delta * s)) +
8122 (0.5 * pow(m_rho, 6) +
8123 (-2. - 0.25 * delta) * pow(m_rho, 4) * s +
8124 (0.5 + 1. * delta) * pow(m_rho, 2) * pow(s, 2) -
8125 0.25 * delta * pow(s, 3) +
8127 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
8129 (4. * pow(m_rho, 4) +
8130 (-2. - 2. * delta) * pow(m_rho, 2) * s +
8131 1. * delta * pow(s, 2))))) *
8132 log(fabs(-1. * pow(a1_mass, 2) + tmin)))) /
8133 (pow(m_rho, 2) * (pow(m_rho, 2) - 1. * s)) -
8134 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
8135 log(fabs(-1. * pow(
pion_mass, 2) + tmin)) +
8136 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) *
8137 (eta2 * pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 1. * s) +
8139 (-0.5 * pow(m_rho, 4) +
8140 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
8141 0.5 * pow(m_rho, 2) * s)) *
8142 log(fabs(-1. * pow(
pion_mass, 2) + tmin))) /
8143 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) -
8144 (0.5 * (pow(m_rho, 2) - 1. * s) *
8145 ((0.5 - 0.25 * delta) * pow(m_rho, 2) +
8146 C4 * (-2. + 1. * delta) * pow(m_rho, 4) +
8147 (-0.25 + 0.125 * delta) * delta * s) *
8149 tmin * (-0.5 * pow(m_rho, 6) + 0.25 * delta * pow(m_rho, 6) +
8150 2. * C4 * pow(m_rho, 8) - 1. * C4 * delta * pow(m_rho, 8) +
8151 1. * pow(m_rho, 4) * s + 0.25 * delta * pow(m_rho, 4) * s -
8152 0.375 * pow(delta, 2) * pow(m_rho, 4) * s -
8153 6. * C4 * pow(m_rho, 6) * s +
8154 3. * C4 * delta * pow(m_rho, 6) * s -
8155 0.5 * pow(m_rho, 2) * pow(s, 2) -
8156 0.75 * delta * pow(m_rho, 2) * pow(s, 2) +
8157 0.5 * pow(delta, 2) * pow(m_rho, 2) * pow(s, 2) +
8158 4. * C4 * pow(m_rho, 4) * pow(s, 2) -
8159 2. * C4 * delta * pow(m_rho, 4) * pow(s, 2) +
8160 0.25 * delta * pow(s, 3) -
8161 0.125 * pow(delta, 2) * pow(s, 3) +
8163 (C4 * (2. - 1. * delta) * pow(m_rho, 6) +
8164 (0.5 - 0.125 * pow(delta, 2)) * pow(m_rho, 2) * s +
8165 (-1.25 + 0.625 * delta) * delta * pow(s, 2) +
8167 (-0.5 + 1.25 * delta - 0.5 * pow(delta, 2) -
8168 2. * C4 * s + 1. * C4 * delta * s)) +
8170 ((-2. + 1. * delta) * pow(m_rho, 4) -
8171 0.5000000000000001 * pow(2. - 1. * delta, 2) *
8173 (1. - 0.5 * delta) * delta * pow(s, 2)) +
8174 s * ((-0.5 + 0.25 * delta) * pow(m_rho, 4) +
8175 (0.5 - 0.125 * pow(delta, 2)) * pow(m_rho, 2) * s +
8176 (-0.25 + 0.125 * delta) * delta * pow(s, 2))) *
8179 (s * ((0.5 - 0.75 * delta + 0.25 * pow(delta, 2)) *
8181 0.12500000000000003 * pow(2. - 1. * delta, 2) *
8183 (0.25 - 0.125 * delta) * delta * pow(s, 2)) +
8185 (C4 * (4. - 2. * delta) * pow(m_rho, 6) +
8186 delta * (-3. + 1.5 * delta) * pow(s, 2) +
8188 s * (2. - 1.5 * pow(delta, 2) + 4. * C4 * s + delta *
8189 (2. - 2. * C4 * s)) +
8191 (-2. - 8. * C4 * s + delta * (1. + 4. * C4 * s))) +
8192 s * ((0.5 - 0.25 * delta) * pow(m_rho, 4) +
8193 0.12500000000000003 * pow(2. - 1. * delta, 2) * pow(m_rho, 2)
8194 * s + (-0.25 + 0.125 * delta) * delta * pow(s, 2) +
8195 pow(
pion_mass, 2) * ((-4. + 2. * delta) * pow(m_rho, 2) +
8196 (2. - 1. * delta) * delta * s)) *
8198 log(fabs(-1. * pow(
pion_mass, 2) + tmin))) /
8199 (pow(m_rho, 4) * (pow(m_rho, 2) - 1. * s)) +
8200 0.0625 * pow(eta1 - 1. * eta2, 2) *
8202 (-4. * pow(a1_mass, 6) +
8203 pow(a1_mass, 4) * (12. * pow(
pion_mass, 2) - 6. * s) +
8205 (4. * pow(
pion_mass, 4) - 4. * pow(m_rho, 4) -
8209 pow(m_rho, 2) * s) +
8211 (-12. * pow(
pion_mass, 4) + 2. * pow(m_rho, 4) +
8219 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) +
8222 (pow(m_rho, 2) - 1. * s) * s +
8223 pow(
pion_mass, 4) * (-3. * pow(m_rho, 2) + s) +
8225 (-6. * pow(
pion_mass, 2) - 3. * pow(m_rho, 2) +
8229 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
8230 pow(
pion_mass, 2) * (6. * pow(m_rho, 2) - 4. * s) -
8236 (2. * pow(a1_mass, 6) - 2. * pow(
pion_mass, 6) -
8239 pow(
pion_mass, 4) * (3. * pow(m_rho, 2) + s) +
8241 (-6. * pow(
pion_mass, 2) + 3. * pow(m_rho, 2) +
8245 (6. * pow(
pion_mass, 4) + pow(m_rho, 4) +
8246 pow(
pion_mass, 2) * (-6. * pow(m_rho, 2) - 4. * s) -
8251 log(fabs(-1. * pow(a1_mass, 2) + tmax)) -
8252 (0.25 * (-2. + delta) * (eta1 - 1. * eta2) *
8253 (eta2 * (-0.5 * pow(a1_mass, 6) - 0.5 * pow(
pion_mass, 6) +
8254 0.5 * pow(
pion_mass, 4) * pow(m_rho, 2) +
8255 pow(a1_mass, 4) * (0.5 * pow(
pion_mass, 2) +
8256 0.5 * pow(m_rho, 2) - 1. * s) +
8258 (0.5 * pow(
pion_mass, 2) + 1. * pow(m_rho, 2) -
8262 (pow(a1_mass, 4) * (1. * pow(
pion_mass, 2) + 0.5 * s) +
8264 (1. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
8265 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 0.5 * s) -
8266 0.5 * pow(m_rho, 2) * s) +
8268 (-2. * pow(
pion_mass, 4) - 0.5 * pow(m_rho, 2) * s +
8269 pow(
pion_mass, 2) * (-1. * pow(m_rho, 2) + 1. * s)))) *
8270 log(fabs(-1. * pow(a1_mass, 2) + tmax))) /
8271 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
8272 (0.25 * (1. * eta1 - 1. * eta2) *
8275 (1. * pow(a1_mass, 6) - 1. * pow(
pion_mass, 6) +
8276 pow(
pion_mass, 4) * (-2.5 * pow(m_rho, 2) + 0.5 * s) +
8278 (-0.5 * pow(m_rho, 2) + 1. * s) +
8279 pow(a1_mass, 4) * (-3. * pow(
pion_mass, 2) -
8280 1.5 * pow(m_rho, 2) + 1.5 * s) +
8281 s * (0.5 * pow(m_rho, 4) - 0.25 * pow(m_rho, 2) * s -
8284 (3. * pow(
pion_mass, 4) + 0.5 * pow(m_rho, 4) +
8285 pow(
pion_mass, 2) * (4. * pow(m_rho, 2) - 2. * s) -
8290 eta2 * (-1. * pow(a1_mass, 6) +
8292 (3. * pow(
pion_mass, 2) - 1. * pow(m_rho, 2) -
8296 (1. * pow(
pion_mass, 4) - 0.5 * pow(m_rho, 4) +
8297 0.25 * pow(m_rho, 2) * s - 0.25 * pow(s, 2)) +
8299 (-3. * pow(
pion_mass, 4) + 1. * pow(m_rho, 4) +
8300 0.25 * pow(m_rho, 2) * s - 0.75 * pow(s, 2) +
8302 (1. * pow(m_rho, 2) + 1. * s)))) +
8305 (pow(a1_mass, 4) * (-1. + 2. * C4 * pow(m_rho, 2)) +
8307 (0.5 * pow(m_rho, 2) +
8309 (-1. + 2. * C4 * pow(m_rho, 2)) +
8312 (2. * C4 * pow(m_rho, 4) +
8314 (2. - 4. * C4 * pow(m_rho, 2)) +
8315 pow(m_rho, 2) * (-1.5 - 4. * C4 * s) +
8316 s * (0.5 + 2. * C4 * s))) +
8317 eta1 * (pow(a1_mass, 4) * (1. - 2. * C4 * pow(m_rho, 2)) +
8318 pow(
pion_mass, 4) * (1. - 2. * C4 * pow(m_rho, 2)) +
8319 (-0.5 * pow(m_rho, 2) + 0.5 * s) * s +
8321 (-1. * pow(m_rho, 2) + 2. * C4 * pow(m_rho, 4) +
8323 (-2. + 4. * C4 * pow(m_rho, 2)) -
8327 (-4. * C4 * pow(m_rho, 4) - 1. * s +
8328 pow(m_rho, 2) * (2. + 4. * C4 * s))))) *
8329 log(fabs(-1. * pow(a1_mass, 2) + tmax))) /
8334 (0.25 * pow(m_rho, 6) + 1.5 * pow(m_rho, 4) * s -
8335 0.125 * delta * pow(m_rho, 4) * s -
8336 0.75 * pow(m_rho, 2) * pow(s, 2) -
8337 0.75 * delta * pow(m_rho, 2) * pow(s, 2) +
8338 0.375 * delta * pow(s, 3) +
8340 (-2. * pow(m_rho, 2) + 1. * delta * s) +
8342 (-6. * pow(m_rho, 2) + 3. * delta * s) +
8343 pow(
pion_mass, 2) * (-3. * pow(m_rho, 4) +
8344 (3. + 1.5 * delta) *
8346 1.5 * delta * pow(s, 2)) +
8348 (0.5 * pow(m_rho, 4) +
8349 (-2.5 - 0.25 * delta) * pow(m_rho, 2) * s +
8350 1.25 * delta * pow(s, 2) +
8352 (6. * pow(m_rho, 2) - 3. * delta * s))) +
8354 (0.5 * pow(m_rho, 6) - 2. * pow(m_rho, 4) * s -
8355 0.25 * delta * pow(m_rho, 4) * s +
8356 0.5 * pow(m_rho, 2) * pow(s, 2) +
8358 delta * pow(m_rho, 2) * pow(s, 2) -
8359 0.25 * delta * pow(s, 3) +
8361 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
8363 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8364 pow(
pion_mass, 2) * (4. * pow(m_rho, 4) +
8365 (-2. - 2. * delta) *
8368 delta * pow(s, 2)) +
8370 (-1.5 * pow(m_rho, 4) +
8371 (1.5 + 0.75 * delta) * pow(m_rho, 2) * s -
8372 0.75 * delta * pow(s, 2) +
8374 (-3. * pow(m_rho, 2) + 1.5 * delta * s))) +
8376 (-0.75 * pow(m_rho, 6) + 0.5 * pow(m_rho, 4) * s +
8379 0.25 * pow(m_rho, 2) * pow(s, 2) -
8380 0.25 * delta * pow(m_rho, 2) * pow(s, 2) -
8384 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
8386 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8388 (-1. * pow(m_rho, 4) +
8389 (-1. + 0.5 * delta) * pow(m_rho, 2) * s +
8390 0.5 * delta * pow(s, 2)) +
8392 (1. * pow(m_rho, 4) +
8393 (1. - 0.5 * delta) * pow(m_rho, 2) * s -
8394 0.5 * delta * pow(s, 2) +
8396 (-3. * pow(m_rho, 2) + 1.5 * delta * s)))) *
8400 (0.5 * pow(m_rho, 4) - 2.5 * pow(m_rho, 2) * s -
8401 0.25 * delta * pow(m_rho, 2) * s +
8402 1.25 * delta * pow(s, 2) +
8404 (6. * pow(m_rho, 2) - 3. * delta * s) +
8406 (-2. * pow(m_rho, 2) + 1. * delta * s)) +
8408 (-1.5 * pow(m_rho, 4) + 1.5 * pow(m_rho, 2) * s +
8409 0.75 * delta * pow(m_rho, 2) * s -
8410 0.75 * delta * pow(s, 2) +
8412 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8414 (-3. * pow(m_rho, 2) + 1.5 * delta * s)) +
8415 pow(eta2, 2) * (1. * pow(m_rho, 4) + 1. * pow(m_rho, 2) * s -
8416 0.5 * delta * pow(m_rho, 2) * s -
8417 0.5 * delta * pow(s, 2) +
8419 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8420 pow(
pion_mass, 2) * (-3. * pow(m_rho, 2) +
8421 1.5 * delta * s))) *
8423 0.16666666666666666 *
8424 (pow(eta1, 2) * (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8425 pow(eta2, 2) * (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8426 eta1 * eta2 * (-2. * pow(m_rho, 2) + 1. * delta * s)) *
8431 (2. * pow(m_rho, 2) - 1. * delta * s) +
8433 (-2. * pow(m_rho, 2) + 1. * delta * s) +
8435 (2.5 * pow(m_rho, 4) +
8436 (-0.5 - 1.25 * delta) * pow(m_rho, 2) * s +
8437 0.25 * delta * pow(s, 2)) +
8438 s * (-0.25 * pow(m_rho, 6) +
8439 0.125 * delta * pow(m_rho, 4) * s +
8440 0.25 * pow(m_rho, 2) * pow(s, 2) -
8441 0.125 * delta * pow(s, 3)) +
8443 (-0.25 * pow(m_rho, 6) +
8444 (0.5 + 0.125 * delta) * pow(m_rho, 4) * s +
8445 (-1.25 - 0.25 * delta) * pow(m_rho, 2) *
8447 0.625 * delta * pow(s, 3)) +
8449 (0.5 * pow(m_rho, 4) +
8450 (-2.5 - 0.25 * delta) * pow(m_rho, 2) * s +
8451 1.25 * delta * pow(s, 2) +
8453 (6. * pow(m_rho, 2) - 3. * delta * s)) +
8455 (0.25 * pow(m_rho, 6) +
8456 (1.5 - 0.125 * delta) * pow(m_rho, 4) * s +
8457 (-0.75 - 0.75 * delta) * pow(m_rho, 2) *
8459 0.375 * delta * pow(s, 3) +
8461 (-6. * pow(m_rho, 2) + 3. * delta * s) +
8462 pow(
pion_mass, 2) * (-3. * pow(m_rho, 4) +
8463 (3. + 1.5 * delta) *
8465 1.5 * delta * pow(s, 2)))) +
8468 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8470 (0.25 * pow(m_rho, 6) +
8471 (-0.5 - 0.125 * delta) * pow(m_rho, 4) * s +
8472 (0.25 + 0.25 * delta) * pow(m_rho, 2) * pow(s, 2) -
8476 (-1. * pow(m_rho, 2) + 0.5 * delta * s)) +
8478 (1. * pow(m_rho, 4) +
8479 (1. - 0.5 * delta) * pow(m_rho, 2) * s -
8480 0.5 * delta * pow(s, 2) +
8482 (-3. * pow(m_rho, 2) + 1.5 * delta * s)) +
8484 (-0.75 * pow(m_rho, 6) +
8485 (0.5 + 0.375 * delta) * pow(m_rho, 4) * s +
8486 (0.25 - 0.25 * delta) * pow(m_rho, 2) * pow(s, 2) -
8490 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
8492 (-1. * pow(m_rho, 4) +
8493 (-1. + 0.5 * delta) * pow(m_rho, 2) * s +
8494 0.5 * delta * pow(s, 2)))) +
8497 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8499 (1. * pow(m_rho, 2) - 0.5 * delta * s) +
8501 (-1. * pow(m_rho, 2) + 0.5 * delta * s) +
8503 (-2.5 * pow(m_rho, 4) +
8504 (0.5 + 1.25 * delta) * pow(m_rho, 2) * s -
8505 0.25 * delta * pow(s, 2)) +
8506 s * (0.25 * pow(m_rho, 6) -
8509 0.25 * pow(m_rho, 2) * pow(s, 2) +
8513 (-1.5 * pow(m_rho, 4) +
8514 (1.5 + 0.75 * delta) * pow(m_rho, 2) * s -
8515 0.75 * delta * pow(s, 2) +
8517 (-3. * pow(m_rho, 2) + 1.5 * delta * s)) +
8519 (0.5 * pow(m_rho, 6) +
8520 (-2. - 0.25 * delta) * pow(m_rho, 4) * s +
8521 (0.5 + 1. * delta) * pow(m_rho, 2) * pow(s, 2) -
8522 0.25 * delta * pow(s, 3) +
8524 (3. * pow(m_rho, 2) - 1.5 * delta * s) +
8526 (4. * pow(m_rho, 4) +
8527 (-2. - 2. * delta) *
8530 delta * pow(s, 2))))) *
8531 log(fabs(-1. * pow(a1_mass, 2) + tmax)))) /
8532 (pow(m_rho, 2) * (pow(m_rho, 2) - 1. * s)) +
8533 0.5 * pow(-2. + delta, 2) * pow(
pion_mass, 2) *
8534 log(fabs(-1. * pow(
pion_mass, 2) + tmax)) -
8535 (0.5 * (-2. + delta) * (eta1 - 1. * eta2) *
8536 (eta2 * pow(
pion_mass, 4) * (-1. * pow(m_rho, 2) + 1. * s) +
8538 (-0.5 * pow(m_rho, 4) +
8539 pow(
pion_mass, 2) * (1. * pow(m_rho, 2) - 1. * s) +
8540 0.5 * pow(m_rho, 2) * s)) *
8541 log(fabs(-1. * pow(
pion_mass, 2) + tmax))) /
8542 (pow(a1_mass, 2) - 1. * pow(
pion_mass, 2)) +
8543 (0.5 * (pow(m_rho, 2) - 1. * s) *
8544 ((0.5 - 0.25 * delta) * pow(m_rho, 2) +
8546 (-2. + 1. * delta) * pow(m_rho, 4) +
8547 (-0.25 + 0.125 * delta) * delta * s) *
8549 tmax * (-0.5 * pow(m_rho, 6) +
8550 0.25 * delta * pow(m_rho, 6) + 2. * C4 * pow(m_rho, 8) -
8552 C4 * delta * pow(m_rho, 8) +
8555 0.25 * delta * pow(m_rho, 4) * s -
8556 0.375 * pow(delta, 2) * pow(m_rho, 4) * s -
8558 C4 * pow(m_rho, 6) * s +
8560 C4 * delta * pow(m_rho, 6) * s -
8561 0.5 * pow(m_rho, 2) * pow(s, 2) -
8562 0.75 * delta * pow(m_rho, 2) * pow(s, 2) +
8563 0.5 * pow(delta, 2) * pow(m_rho, 2) * pow(s, 2) +
8565 C4 * pow(m_rho, 4) * pow(s, 2) -
8567 C4 * delta * pow(m_rho, 4) * pow(s, 2) +
8568 0.25 * delta * pow(s, 3) -
8569 0.125 * pow(delta, 2) * pow(s, 3) +
8571 (C4 * (2. - 1. * delta) * pow(m_rho, 6) +
8572 (0.5 - 0.125 * pow(delta, 2)) * pow(m_rho, 2) * s +
8573 (-1.25 + 0.625 * delta) * delta * pow(s, 2) +
8575 (-0.5 + 1.25 * delta -
8576 0.5 * pow(delta, 2) - 2. * C4 * s +
8581 ((-2. + 1. * delta) * pow(m_rho, 4) -
8582 0.5000000000000001 *
8583 pow(2. - 1. * delta, 2) * pow(m_rho, 2) * s +
8584 (1. - 0.5 * delta) *
8585 delta * pow(s, 2)) +
8586 s * ((-0.5 + 0.25 * delta) * pow(m_rho, 4) +
8587 (0.5 - 0.125 * pow(delta, 2)) * pow(m_rho, 2) * s +
8588 (-0.25 + 0.125 * delta) * delta * pow(s, 2))) *
8591 (s * ((0.5 - 0.75 * delta + 0.25 * pow(delta, 2)) *
8593 0.12500000000000003 * pow(2. - 1. * delta, 2) *
8595 (0.25 - 0.125 * delta) * delta * pow(s, 2)) +
8597 (C4 * (4. - 2. * delta) * pow(m_rho, 6) +
8598 delta * (-3. + 1.5 * delta) * pow(s, 2) +
8600 (2. - 1.5 * pow(delta, 2) + 4. * C4 * s +
8601 delta * (2. - 2. * C4 * s)) +
8603 (-2. - 8. * C4 * s + delta * (1. + 4. * C4 * s))) +
8604 s * ((0.5 - 0.25 * delta) * pow(m_rho, 4) +
8605 0.12500000000000003 * pow(2. - 1. * delta, 2) * pow(m_rho, 2)
8606 * s + (-0.25 + 0.125 * delta) * delta * pow(s, 2) +
8607 pow(
pion_mass, 2) * ((-4. + 2. * delta) * pow(m_rho, 2) +
8608 (2. - 1. * delta) * delta * s)) *
8610 log(fabs(-1. * pow(
pion_mass, 2) + tmax))) /
8611 (pow(m_rho, 4) * (pow(m_rho, 2) - 1. * s)))) /
8612 (16. * Pi * s * (-4 * pow(
pion_mass, 2) + s));
8619 const double s,
const double t,
const double m_rho) {
8620 const double spin_deg_factor = 1.0;
8629 const double diff_xs =
8630 (pow(
Const, 2) * pow(ghat, 4) *
8632 C4 * (2. * C4 * pow(m_rho, 4) + pow(m_rho, 2) * (-3. - 4. * C4 * s) +
8633 s * (3. + 2. * C4 * s)) -
8634 (0.25 * pow(-2 + delta, 2) * pow(
pion_mass, 2) *
8635 (pow(
pion_mass, 4) + pow(pow(m_rho, 2) - t, 2) -
8636 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) + t))) /
8637 (pow(m_rho, 2) * pow(pow(
pion_mass, 2) - t, 2)) +
8639 (0.5 * pow(
pion_mass, 4) * pow(m_rho, 2) + 0.125 * pow(m_rho, 6) +
8640 pow(
pion_mass, 2) * (1.25 * pow(m_rho, 4) - 0.375 * pow(s, 2) +
8641 pow(m_rho, 2) * (0.125 * s - 1. * t)) +
8642 pow(m_rho, 4) * (-0.375 * s - 0.5 * t) +
8643 pow(s, 2) * (0.125 * s + 0.125 * t) +
8645 (0.0625 * pow(s, 2) + 0.375 * s * t + 0.5 * pow(t, 2)))) /
8647 (delta * (2. * C4 * pow(m_rho, 6) +
8648 pow(
pion_mass, 2) * (3. * C4 * pow(m_rho, 4) + 0.25 * s +
8649 pow(m_rho, 2) * (-1.25 - 1. * C4 * s)) +
8650 s * (-0.25 * s - 0.25 * t) +
8651 pow(m_rho, 4) * (-0.75 - 1.5 * C4 * s - 3. * C4 * t) +
8653 (1.25 * t + s * (0.25 - 0.5 * C4 * s + 1. * C4 * t)))) /
8655 (0.125 * (-2 + delta) * (eta1 - eta2) *
8657 (pow(
pion_mass, 4) + t * (-pow(m_rho, 2) + 2 * s + t) -
8658 pow(
pion_mass, 2) * (pow(m_rho, 2) + 2 * t))) +
8660 pow(
pion_mass, 4) * (-2 * pow(m_rho, 2) + s - 4 * t) +
8661 s * t * (-pow(m_rho, 2) + t) +
8662 pow(
pion_mass, 2) * (2 * pow(m_rho, 4) + 2 * t * (s + t) -
8663 pow(m_rho, 2) * (s + 2 * t))))) /
8664 ((-pow(a1_mass, 2) + t) * (-pow(
pion_mass, 2) + t)) +
8665 (0.03125 * pow(eta1 - eta2, 2) *
8668 pow(t, 2) * (-pow(m_rho, 4) - 2 * pow(m_rho, 2) * s +
8669 2 * pow(s, 2) + 2 * s * t + pow(t, 2)) -
8671 (-2 * pow(m_rho, 4) + pow(m_rho, 2) * s + 2 * t * (s + t)) +
8672 pow(
pion_mass, 4) * (-pow(m_rho, 4) + 2 * t * (s + 3 * t))) +
8675 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) + 2 * t) +
8676 pow(t, 2) * (pow(m_rho, 4) + 2 * pow(s, 2) + 2 * s * t +
8677 pow(t, 2) + 2 * pow(m_rho, 2) * (-s + t)) -
8679 (2 * t * (s + t) + pow(m_rho, 2) * (s + 3 * t)) +
8680 pow(
pion_mass, 4) * (pow(m_rho, 4) + 6 * pow(m_rho, 2) * t +
8681 2 * t * (s + 3 * t))) +
8684 2 * pow(
pion_mass, 6) * (pow(m_rho, 2) - 2 * t) -
8685 2 * pow(
pion_mass, 2) * (pow(m_rho, 2) - s - t) *
8686 (pow(m_rho, 4) + pow(m_rho, 2) * t - 2 * pow(t, 2)) +
8687 t * (-pow(m_rho, 2) + t) *
8688 (2 * pow(s, 2) + 2 * s * t + pow(t, 2) -
8689 pow(m_rho, 2) * (2 * s + t)) +
8691 (pow(m_rho, 4) - 2 * pow(m_rho, 2) * (s + 3 * t) +
8692 2 * t * (s + 3 * t))))) /
8693 pow(pow(a1_mass, 2) - t, 2) -
8694 (0.0625 * (eta1 - eta2) *
8698 (pow(m_rho, 2) - 2 * C4 * pow(m_rho, 4) + 3 * delta * t) +
8700 (delta * (s - 6 * t) * (s + 2 * t) -
8701 (2 + delta) * pow(m_rho, 2) * (s + 4 * t) +
8702 2 * pow(m_rho, 4) * (-1 + delta + 8 * C4 * t)) +
8703 t * (-8 * C4 * pow(m_rho, 6) +
8704 pow(m_rho, 4) * (6 - 4 * delta + 16 * C4 * s - 8 * C4 * t) +
8705 pow(m_rho, 2) * (-(s * (2 + delta + 8 * C4 * s)) +
8706 4 * (1 + delta) * t) +
8707 delta * (3 * pow(s, 2) + 4 * s * t + 4 * pow(t, 2)))) +
8708 eta1 * (4 * delta * pow(
pion_mass, 6) - 8 * C4 * pow(m_rho, 6) * t +
8709 delta * (pow(s, 3) - 4 * pow(s, 2) * t - 6 * s * pow(t, 2) -
8712 ((2 - 5 * delta) * pow(m_rho, 2) -
8713 4 * C4 * pow(m_rho, 4) + delta * (s + 6 * t)) +
8715 (s - delta * s + t * (2 - delta + 4 * C4 * t)) +
8717 (8 * delta * s * t + 2 * (-2 + 3 * delta) * pow(t, 2) +
8718 pow(s, 2) * (-2 + delta + 8 * C4 * t)) -
8720 (-8 * C4 * pow(m_rho, 6) +
8721 2 * delta * (s - 3 * t) * (s + t) -
8722 pow(m_rho, 2) * ((2 + delta) * s + (4 - 8 * delta) * t) +
8723 pow(m_rho, 4) * (4 + 8 * C4 * (s + t)))))) /
8724 (pow(m_rho, 2) * (-pow(a1_mass, 2) + t)) +
8725 (0.0625 * pow(-2 * pow(m_rho, 2) + delta * s, 2) *
8726 (8 * pow(
pion_mass, 4) * pow(m_rho, 2) + 2 * pow(m_rho, 6) +
8727 pow(s, 3) + 8 * pow(m_rho, 2) * t * (s + t) -
8728 pow(m_rho, 4) * (7 * s + 8 * t) +
8730 (5 * pow(m_rho, 4) - pow(s, 2) - 4 * pow(m_rho, 2) * t)) *
8732 (pow(m_rho, 6) * pow(pow(m_rho, 2) - s, 2)) -
8733 (0.0625 * (eta1 - eta2) * (2 * pow(m_rho, 2) - delta * s) *
8734 (-(eta2 * (2 * pow(
pion_mass, 2) + pow(m_rho, 2) - s - 2 * t) *
8736 pow(
pion_mass, 2) * (-pow(m_rho, 2) + s - 4 * t) +
8737 t * (3 * pow(m_rho, 2) + s + 2 * t))) +
8738 eta1 * (4 * pow(
pion_mass, 6) - pow(m_rho, 4) * s + pow(s, 3) +
8739 2 * pow(
pion_mass, 4) * (5 * pow(m_rho, 2) - s - 6 * t) -
8740 2 * (pow(m_rho, 4) - 4 * pow(m_rho, 2) * s + pow(s, 2)) * t +
8741 6 * (pow(m_rho, 2) - s) * pow(t, 2) - 4 * pow(t, 3) -
8743 (4 * pow(m_rho, 2) * t + (s - 3 * t) * (s + t)))) *
8745 (pow(m_rho, 2) * (pow(m_rho, 2) - s) * (pow(a1_mass, 2) - t)) -
8746 (3. * (1. * pow(m_rho, 2) - 0.5 * delta * s) *
8747 (delta * (0.666667 * pow(
pion_mass, 4) * pow(m_rho, 2) +
8748 0.166667 * pow(m_rho, 6) +
8750 (1.66667 * pow(m_rho, 4) - 0.416667 * pow(s, 2) +
8751 pow(m_rho, 2) * (0.0833333 * s - 1.33333 * t)) +
8752 pow(m_rho, 4) * (-0.541667 * s - 0.666667 * t) +
8753 pow(s, 2) * (0.125 * s + 0.0833333 * t) +
8754 pow(m_rho, 2) * (-0.0833333 * pow(s, 2) + 0.583333 * s * t +
8755 0.666667 * pow(t, 2))) +
8757 (1. * C4 * pow(m_rho, 6) +
8759 (2. * C4 * pow(m_rho, 4) + 0.166667 * s +
8760 pow(m_rho, 2) * (-0.833333 - 0.666667 * C4 * s)) +
8761 s * (-0.0833333 * s - 0.166667 * t) +
8762 pow(m_rho, 4) * (-0.416667 - 1.33333 * C4 * s - 2. * C4 * t) +
8763 pow(m_rho, 2) * (0.833333 * t + s * (0.5 + 0.333333 * C4 * s +
8764 0.666667 * C4 * t)))) *
8766 (pow(m_rho, 8) - 1. * pow(m_rho, 6) * s) +
8767 ((0.125 * (-2 + delta) *
8768 (pow(
pion_mass, 4) * ((-2 + 4 * delta) * pow(m_rho, 2) +
8769 8 * C4 * pow(m_rho, 4) + 5 * delta * s) -
8770 8 * C4 * pow(m_rho, 6) * t + delta * s * t * (s + t) +
8771 pow(m_rho, 2) * (delta * s * (s - 3 * t) - 2 * t * (s + t)) +
8773 ((-1 + delta) * s + t + 4 * C4 * t * (2 * s + t)) -
8775 (8 * C4 * pow(m_rho, 6) + delta * s * (s + 6 * t) +
8776 2 * pow(m_rho, 4) * (-3 + 8 * C4 * t) +
8778 ((-2 + 9 * delta) * s + 4 * (-1 + delta) * t)))) /
8780 (0.125 * (-2. + delta) * (-2. * pow(m_rho, 2) + delta * s) *
8781 (pow(
pion_mass, 4) * (4. * pow(m_rho, 2) + 4. * s) +
8783 (pow(m_rho, 2) * (-7. * s - 4. * t) + s * (-1. * s - 4. * t)) +
8784 s * (pow(m_rho, 4) + pow(m_rho, 2) * (s - 1. * t) + s * t)) *
8786 ((pow(m_rho, 2) - 1. * s) * (pow(
pion_mass, 2) - 1. * t))) /
8788 (16. * Pi * s * (-4 * pow(
pion_mass, 2) + s));
double HeavisideTheta(double x)
Heavyside step function.
constexpr double gev2_mb
GeV^-2 <-> mb conversion factor.
std::array< T, 2 > get_t_range(const T sqrts, const T m1, const T m2, const T m3, const T m4)
Get the range of Mandelstam-t values allowed in a particular 2->2 process, see PDG 2014 booklet,...
constexpr double pion_mass
Pion mass in GeV.
double cut_off(const double sigma_mb)
Cross section after cut off.
constexpr double omega_mass
omega mass in GeV.