G4eeToTwoPiModel Class Reference

#include <G4eeToTwoPiModel.hh>

Inheritance diagram for G4eeToTwoPiModel:

Public Member Functions
G4double	ComputeCrossSection (G4double) const override
	G4eeToTwoPiModel (const G4eeToTwoPiModel &)=delete
	G4eeToTwoPiModel (G4eeCrossSections *, G4double, G4double)
G4double	HighEnergy () const
G4double	LowEnergy () const
G4eeToTwoPiModel &	operator= (const G4eeToTwoPiModel &right)=delete
G4double	PeakEnergy () const override
G4PhysicsVector *	PhysicsVector () const
void	SampleSecondaries (std::vector< G4DynamicParticle * > *, G4double, const G4ThreeVector &) override
	~G4eeToTwoPiModel () override

Protected Attributes
G4eeCrossSections *	cross

Private Attributes
G4double	delta
G4double	highEnergy
G4double	lowEnergy
G4double	massPi
G4double	massRho

Detailed Description

Definition at line 58 of file G4eeToTwoPiModel.hh.

Constructor & Destructor Documentation

G4eeToTwoPiModel() [1/2]

G4eeToTwoPiModel::G4eeToTwoPiModel ( G4eeCrossSections *  cr, G4double  maxkinEnergy, G4double  binWidth  )

explicit

Definition at line 63 of file G4eeToTwoPiModel.cc.

:   G4Vee2hadrons(cr,
          2.0*G4PionPlus::PionPlus()->GetPDGMass(),
                  maxkinEnergy,
          binWidth)
{
  G4cout << "#####G4eeToTwoPiModel####" << G4endl;  
 
  massPi = G4PionPlus::PionPlus()->GetPDGMass();
  massRho = 775.5*CLHEP::MeV;
}

References G4cout, G4endl, G4ParticleDefinition::GetPDGMass(), massPi, massRho, CLHEP::MeV, and G4PionPlus::PionPlus().

~G4eeToTwoPiModel()

G4eeToTwoPiModel::~G4eeToTwoPiModel ( )

override

Definition at line 79 of file G4eeToTwoPiModel.cc.

{}

G4eeToTwoPiModel() [2/2]

G4eeToTwoPiModel::G4eeToTwoPiModel ( const G4eeToTwoPiModel &  )

delete

Member Function Documentation

ComputeCrossSection()

G4double G4eeToTwoPiModel::ComputeCrossSection ( G4double  e ) const

overridevirtual

Implements G4Vee2hadrons.

Definition at line 91 of file G4eeToTwoPiModel.cc.

{
  return cross->CrossSection2pi(e);
}

References G4Vee2hadrons::cross, and G4eeCrossSections::CrossSection2pi().

HighEnergy()

G4double G4Vee2hadrons::HighEnergy ( ) const

inlineinherited

Definition at line 95 of file G4Vee2hadrons.hh.

{return highEnergy;};

References G4Vee2hadrons::highEnergy.

Referenced by G4eeToHadronsMultiModel::AddEEModel(), G4eeToHadronsModel::Initialise(), and G4eeTo3PiModel::PeakEnergy().

LowEnergy()

G4double G4Vee2hadrons::LowEnergy ( ) const

inlineinherited

Definition at line 93 of file G4Vee2hadrons.hh.

{return lowEnergy;};

References G4Vee2hadrons::lowEnergy.

Referenced by G4eeToHadronsMultiModel::AddEEModel(), and G4eeToHadronsModel::Initialise().

operator=()

G4eeToTwoPiModel & G4eeToTwoPiModel::operator= ( const G4eeToTwoPiModel &  right )

delete

PeakEnergy()

G4double G4eeToTwoPiModel::PeakEnergy ( ) const

overridevirtual

Implements G4Vee2hadrons.

Definition at line 84 of file G4eeToTwoPiModel.cc.

{
  return massRho;
}

References massRho.

PhysicsVector()

G4PhysicsVector * G4Vee2hadrons::PhysicsVector ( ) const

inlineinherited

Definition at line 83 of file G4Vee2hadrons.hh.

  {
    G4int nbins = std::max(3, G4int((highEnergy - lowEnergy)/delta) );
    G4PhysicsVector* pp = new G4PhysicsLinearVector(lowEnergy,highEnergy,nbins);
    return pp;
  };

References G4Vee2hadrons::delta, G4Vee2hadrons::highEnergy, G4Vee2hadrons::lowEnergy, G4INCL::Math::max(), and G4InuclParticleNames::pp.

Referenced by G4eeToHadronsModel::Initialise().

SampleSecondaries()

void G4eeToTwoPiModel::SampleSecondaries ( std::vector< G4DynamicParticle * > *  newp, G4double  e, const G4ThreeVector &  direction  )

overridevirtual

Implements G4Vee2hadrons.

Definition at line 98 of file G4eeToTwoPiModel.cc.

{
 
  G4double tkin = 0.5*e - massPi;
  if(tkin < 0.0) tkin = 0.0;
  G4double cost;
  do {
    cost = 2.0*G4UniformRand() - 1.0;
    // Loop checking, 07-Aug-2015, Vladimir Ivanchenko
  } while( G4UniformRand() > 1.0 - cost*cost );
 
  G4double sint = sqrt(1.0 - cost*cost);
  G4double phi  = twopi * G4UniformRand();
 
  G4ThreeVector dir(sint*cos(phi),sint*sin(phi), cost);
  dir.rotateUz(direction);
 
  // create G4DynamicParticle objects
  G4DynamicParticle* pip = 
     new G4DynamicParticle(G4PionPlus::PionPlus(),dir,tkin);
  G4DynamicParticle* pin = 
     new G4DynamicParticle(G4PionMinus::PionMinus(),-dir,tkin);
  newp->push_back(pip);
  newp->push_back(pin);
}

References G4UniformRand, massPi, G4PionMinus::PionMinus(), G4PionPlus::PionPlus(), G4InuclParticleNames::pip, CLHEP::Hep3Vector::rotateUz(), and twopi.

Field Documentation

cross

G4eeCrossSections* G4Vee2hadrons::cross

protectedinherited

Definition at line 110 of file G4Vee2hadrons.hh.

Referenced by G4ee2KChargedModel::ComputeCrossSection(), G4ee2KNeutralModel::ComputeCrossSection(), G4eeTo3PiModel::ComputeCrossSection(), G4eeToPGammaModel::ComputeCrossSection(), ComputeCrossSection(), and G4eeTo3PiModel::SampleSecondaries().

delta

G4double G4Vee2hadrons::delta

privateinherited

Definition at line 106 of file G4Vee2hadrons.hh.

Referenced by G4Vee2hadrons::G4Vee2hadrons(), and G4Vee2hadrons::PhysicsVector().

highEnergy

G4double G4Vee2hadrons::highEnergy

privateinherited

Definition at line 105 of file G4Vee2hadrons.hh.

Referenced by G4Vee2hadrons::G4Vee2hadrons(), G4Vee2hadrons::HighEnergy(), and G4Vee2hadrons::PhysicsVector().

lowEnergy

G4double G4Vee2hadrons::lowEnergy

privateinherited

Definition at line 104 of file G4Vee2hadrons.hh.

Referenced by G4Vee2hadrons::G4Vee2hadrons(), G4Vee2hadrons::LowEnergy(), and G4Vee2hadrons::PhysicsVector().

massPi

G4double G4eeToTwoPiModel::massPi

private

Definition at line 80 of file G4eeToTwoPiModel.hh.

Referenced by G4eeToTwoPiModel(), and SampleSecondaries().

massRho

G4double G4eeToTwoPiModel::massRho

private

Definition at line 81 of file G4eeToTwoPiModel.hh.

Referenced by G4eeToTwoPiModel(), and PeakEnergy().

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

• source/processes/electromagnetic/highenergy/include/G4eeToTwoPiModel.hh
• source/processes/electromagnetic/highenergy/src/G4eeToTwoPiModel.cc