smash::ThreeBodyDecay Class Reference

#include <decaytype.h>

ThreeBodyDecay represents a decay type with three final-state particles.

Definition at line 286 of file decaytype.h.

Inheritance diagram for smash::ThreeBodyDecay:

Collaboration diagram for smash::ThreeBodyDecay:

Public Member Functions
	ThreeBodyDecay (ParticleTypePtrList part_types, int l)
	Construct a ThreeBodyDecay. More...
unsigned int	particle_number () const override
bool	has_particles (ParticleTypePtrList list) const override
double	width (double m0, double G0, double m) const override
double	in_width (double m0, double G0, double m, double m1, double m2) const override
Public Member Functions inherited from smash::DecayType
	DecayType (ParticleTypePtrList part_types, int l)
	Construct a DecayType. More...
virtual	~DecayType ()=default
	Virtual Destructor. More...
virtual bool	has_mother (ParticleTypePtr mother) const
const ParticleTypePtrList &	particle_types () const
int	angular_momentum () const

Additional Inherited Members
Protected Attributes inherited from smash::DecayType
ParticleTypePtrList	particle_types_
	final-state particles of the decay More...
int	L_
	angular momentum of the decay More...

Constructor & Destructor Documentation

ThreeBodyDecay()

smash::ThreeBodyDecay::ThreeBodyDecay	(	ParticleTypePtrList	part_types,
		int	l
	)

Construct a ThreeBodyDecay.

Parameters

[in]	part_types	Final-state particles of the decay.
[in]	l	Angular momentum of the decay.

Returns

The constructed object.

Definition at line 275 of file decaytype.cc.

    : DecayType(sort_particles(part_types), l) {
  if (part_types.size() != 3) {
    throw std::runtime_error(
        "Wrong number of particles in ThreeBodyDecay constructor: " +
        std::to_string(part_types.size()));
  }
}

Member Function Documentation

particle_number()

unsigned int smash::ThreeBodyDecay::particle_number ( ) const

overridevirtual

Returns

the number of particles in the final state

Implements smash::DecayType.

Definition at line 284 of file decaytype.cc.

{ return 3; }

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has_particles()

bool smash::ThreeBodyDecay::has_particles ( ParticleTypePtrList  list ) const

overridevirtual

Returns

if the final state consists of the given particle list.

Parameters

[in]

list

Final state particle types to be checked.

Implements smash::DecayType.

Definition at line 286 of file decaytype.cc.

                                                                 {
  if (list.size() != particle_number()) {
    return false;
  }
  // compare sorted vectors (particle_types_ is already sorted)
  std::sort(list.begin(), list.end());
  return particle_types_[0] == list[0] && particle_types_[1] == list[1] &&
         particle_types_[2] == list[2];
}

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width()

double smash::ThreeBodyDecay::width ( double  m0, double  G0, double  m  ) const

overridevirtual

Returns

the mass-dependent width of the decay.

Parameters

[in]	m0	Pole mass of the decaying particle [GeV].
[in]	G0	Partial width at the pole mass [GeV].
[in]	m	Actual mass of the decaying particle [GeV].

Implements smash::DecayType.

Reimplemented in smash::ThreeBodyDecayDilepton.

Definition at line 296 of file decaytype.cc.

                                                            {
  return G0;  // use on-shell width
}

in_width()

double smash::ThreeBodyDecay::in_width ( double  m0, double  G0, double  m, double  m1, double  m2  ) const

overridevirtual

Returns

The mass-dependent in-width for a resonance formation process.

Parameters

[in]	m0	Pole mass of the produced resonance [GeV].
[in]	G0	Partial width at the pole mass [GeV].
[in]	m	Actual mass of the produced resonance [GeV].
[in]	m1	Actual mass of the first incoming particle [GeV].
[in]	m2	Actual mass of the second incoming particle [GeV].

Implements smash::DecayType.

Definition at line 300 of file decaytype.cc.

                                              {
  return G0;  // use on-shell width
}

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The documentation for this class was generated from the following files:

• src/include/smash/decaytype.h
• src/decaytype.cc