#include <G4PionDecayMakeSpin.hh>

Inheritance diagram for G4PionDecayMakeSpin:

Public Member Functions
	G4PionDecayMakeSpin (const G4String &processName="Decay")

virtual	~G4PionDecayMakeSpin ()

virtual void	ProcessDescription (std::ostream &outFile) const override

Public Member Functions inherited from G4Decay
	G4Decay (const G4String &processName="Decay")

virtual	~G4Decay ()

virtual G4VParticleChange *	PostStepDoIt (const G4Track &aTrack, const G4Step &aStep) override

virtual G4VParticleChange *	AtRestDoIt (const G4Track &aTrack, const G4Step &aStep) override

virtual void	BuildPhysicsTable (const G4ParticleDefinition &) override

virtual G4bool	IsApplicable (const G4ParticleDefinition &) override

virtual G4double	AtRestGetPhysicalInteractionLength (const G4Track &track, G4ForceCondition *condition) override

virtual G4double	PostStepGetPhysicalInteractionLength (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition) override

virtual void	StartTracking (G4Track *) override

virtual void	EndTracking () override

void	SetExtDecayer (G4VExtDecayer *)

const G4VExtDecayer *	GetExtDecayer () const

G4double	GetRemainderLifeTime () const

Public Member Functions inherited from G4VRestDiscreteProcess
	G4VRestDiscreteProcess (const G4String &, G4ProcessType aType=fNotDefined)

	G4VRestDiscreteProcess (G4VRestDiscreteProcess &)

virtual	~G4VRestDiscreteProcess ()

G4VRestDiscreteProcess &	operator= (const G4VRestDiscreteProcess &)=delete

virtual G4double	AlongStepGetPhysicalInteractionLength (const G4Track &, G4double, G4double, G4double &, G4GPILSelection *)

virtual G4VParticleChange *	AlongStepDoIt (const G4Track &, const G4Step &)

Public Member Functions inherited from G4VProcess
	G4VProcess (const G4String &aName="NoName", G4ProcessType aType=fNotDefined)

	G4VProcess (const G4VProcess &right)

virtual	~G4VProcess ()

G4VProcess &	operator= (const G4VProcess &)=delete

G4bool	operator== (const G4VProcess &right) const

G4bool	operator!= (const G4VProcess &right) const

G4double	GetCurrentInteractionLength () const

void	SetPILfactor (G4double value)

G4double	GetPILfactor () const

G4double	AlongStepGPIL (const G4Track &track, G4double previousStepSize, G4double currentMinimumStep, G4double &proposedSafety, G4GPILSelection *selection)

G4double	AtRestGPIL (const G4Track &track, G4ForceCondition *condition)

G4double	PostStepGPIL (const G4Track &track, G4double previousStepSize, G4ForceCondition *condition)

virtual void	PreparePhysicsTable (const G4ParticleDefinition &)

virtual G4bool	StorePhysicsTable (const G4ParticleDefinition *, const G4String &, G4bool)

virtual G4bool	RetrievePhysicsTable (const G4ParticleDefinition *, const G4String &, G4bool)

const G4String &	GetPhysicsTableFileName (const G4ParticleDefinition *, const G4String &directory, const G4String &tableName, G4bool ascii=false)

const G4String &	GetProcessName () const

G4ProcessType	GetProcessType () const

void	SetProcessType (G4ProcessType)

G4int	GetProcessSubType () const

void	SetProcessSubType (G4int)

virtual const G4VProcess *	GetCreatorProcess () const

virtual void	SetProcessManager (const G4ProcessManager *)

virtual const G4ProcessManager *	GetProcessManager ()

virtual void	ResetNumberOfInteractionLengthLeft ()

G4double	GetNumberOfInteractionLengthLeft () const

G4double	GetTotalNumberOfInteractionLengthTraversed () const

G4bool	isAtRestDoItIsEnabled () const

G4bool	isAlongStepDoItIsEnabled () const

G4bool	isPostStepDoItIsEnabled () const

virtual void	DumpInfo () const

void	SetVerboseLevel (G4int value)

G4int	GetVerboseLevel () const

virtual void	SetMasterProcess (G4VProcess *masterP)

const G4VProcess *	GetMasterProcess () const

virtual void	BuildWorkerPhysicsTable (const G4ParticleDefinition &part)

virtual void	PrepareWorkerPhysicsTable (const G4ParticleDefinition &)

Protected Member Functions
virtual void	DaughterPolarization (const G4Track &aTrack, G4DecayProducts *products) override

Protected Member Functions inherited from G4Decay
virtual G4VParticleChange *	DecayIt (const G4Track &aTrack, const G4Step &aStep)

virtual G4double	GetMeanFreePath (const G4Track &aTrack, G4double previousStepSize, G4ForceCondition *condition) override

virtual G4double	GetMeanLifeTime (const G4Track &aTrack, G4ForceCondition *condition) override

Protected Member Functions inherited from G4VRestDiscreteProcess
Protected Member Functions inherited from G4VProcess
void	SubtractNumberOfInteractionLengthLeft (G4double prevStepSize)

void	ClearNumberOfInteractionLengthLeft ()

Additional Inherited Members
Static Public Member Functions inherited from G4VProcess
static const G4String &	GetProcessTypeName (G4ProcessType)

Protected Attributes inherited from G4Decay
G4int	verboseLevel

const G4double	HighestValue

G4double	fRemainderLifeTime

G4ParticleChangeForDecay	fParticleChangeForDecay

G4VExtDecayer *	pExtDecayer

Protected Attributes inherited from G4VProcess
const G4ProcessManager *	aProcessManager = nullptr

G4VParticleChange *	pParticleChange = nullptr

G4ParticleChange	aParticleChange

G4double	theNumberOfInteractionLengthLeft = -1.0

G4double	currentInteractionLength = -1.0

G4double	theInitialNumberOfInteractionLength = -1.0

G4String	theProcessName

G4String	thePhysicsTableFileName

G4ProcessType	theProcessType = fNotDefined

G4int	theProcessSubType = -1

G4double	thePILfactor = 1.0

G4int	verboseLevel = 0

G4bool	enableAtRestDoIt = true

G4bool	enableAlongStepDoIt = true

G4bool	enablePostStepDoIt = true

Detailed Description

Definition at line 39 of file G4PionDecayMakeSpin.hh.

Constructor & Destructor Documentation

◆ G4PionDecayMakeSpin()

G4PionDecayMakeSpin::G4PionDecayMakeSpin ( const G4String & processName = "Decay" )

Definition at line 38 of file G4PionDecayMakeSpin.cc.

                               : G4Decay(processName) 
{
  // set Process Sub Type
  SetProcessSubType(static_cast<int>(DECAY_PionMakeSpin));
 
}

◆ ~G4PionDecayMakeSpin()

G4PionDecayMakeSpin::~G4PionDecayMakeSpin ( )

virtual

Definition at line 46 of file G4PionDecayMakeSpin.cc.

46{ }

Member Function Documentation

◆ DaughterPolarization()

void G4PionDecayMakeSpin::DaughterPolarization	(	const G4Track &	aTrack,
		G4DecayProducts *	products )

overrideprotectedvirtual

Reimplemented from G4Decay.

Definition at line 48 of file G4PionDecayMakeSpin.cc.

{
  //  This routine deals only with particles that can decay into a muon
  //                 pi+, pi-, K+, K- and K0_long
 
  // get particle
 
  const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
  const G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
 
  G4ParticleDefinition* aMuonPlus =
            G4ParticleTable::GetParticleTable()->FindParticle("mu+");
  G4ParticleDefinition* aMuonMinus =
            G4ParticleTable::GetParticleTable()->FindParticle("mu-");
  G4ParticleDefinition* aPionPlus = 
            G4ParticleTable::GetParticleTable()->FindParticle("pi+");
  G4ParticleDefinition* aPionMinus =
            G4ParticleTable::GetParticleTable()->FindParticle("pi-");
  G4ParticleDefinition* aKaonPlus =
            G4ParticleTable::GetParticleTable()->FindParticle("kaon+");
  G4ParticleDefinition* aKaonMinus =
            G4ParticleTable::GetParticleTable()->FindParticle("kaon-");
  G4ParticleDefinition* aKaon0Long =
            G4ParticleTable::GetParticleTable()->FindParticle("kaon0L");
  G4ParticleDefinition* aNeutrinoMu =
            G4ParticleTable::GetParticleTable()->FindParticle("nu_mu");
  G4ParticleDefinition* aAntiNeutrinoMu =
            G4ParticleTable::GetParticleTable()->FindParticle("anti_nu_mu");
 
  if( aParticleDef == aPionPlus   ||
      aParticleDef == aPionMinus  || 
      aParticleDef == aKaonPlus   ||
      aParticleDef == aKaonMinus  ||
      aParticleDef == aKaon0Long ) {
  } else {
      return;
  }
 
  G4DynamicParticle* aMuon = nullptr;
 
  G4double emu(0), eneutrino(0);
  G4ThreeVector p_muon, p_neutrino;
 
  G4int numberOfSecondaries = products->entries();
 
  if (numberOfSecondaries > 0) {
    for (G4int index=0; index < numberOfSecondaries; index++){
      G4DynamicParticle* aSecondary = (*products)[index];
      const G4ParticleDefinition* aSecondaryDef = aSecondary->GetDefinition();
      
      if (aSecondaryDef == aMuonPlus ||
      aSecondaryDef == aMuonMinus ) {
    //          Muon+ or Muon-
    aMuon = aSecondary;
    emu    = aSecondary->GetTotalEnergy();
    p_muon = aSecondary->GetMomentum();
      } else if (aSecondaryDef == aNeutrinoMu ||
         aSecondaryDef == aAntiNeutrinoMu ) {
    //          Muon-Neutrino / Muon-Anti-Neutrino
    eneutrino  = aSecondary->GetTotalEnergy();
    p_neutrino = aSecondary->GetMomentum();
      }
    }
  }
 
  //  This routine deals only with decays with a 
  //  muon and mu-(anti)neutrinos in the final state
  if (aMuon == nullptr) return;
  if (eneutrino==0||emu==0) return;
 
  G4ThreeVector spin(0,0,0);
 
  const G4DynamicParticle* theParentParticle = products->GetParentParticle();
 
  G4double amass = theParentParticle->GetMass();
  G4double emmu = aMuonPlus->GetPDGMass();
 
  if (numberOfSecondaries == 2 ) {
     G4double scale = - (eneutrino - ( p_muon * p_neutrino )/(emu+emmu));
 
     p_muon = scale * p_muon;
     p_neutrino = emmu * p_neutrino;
     spin = p_muon + p_neutrino;
 
     scale = 2./(amass*amass-emmu*emmu);
     spin = scale * spin;
 
     if (aParticle->GetCharge() < 0.0) spin = -spin;
 
  } else {
       spin = G4RandomDirection();
 
  }
 
  spin = spin.unit();
 
  aMuon->SetPolarization(spin.x(),spin.y(),spin.z());
 
  return; 
}

◆ ProcessDescription()

void G4PionDecayMakeSpin::ProcessDescription ( std::ostream & outFile ) const

overridevirtual

Reimplemented from G4Decay.

Definition at line 150 of file G4PionDecayMakeSpin.cc.

{
  outFile << GetProcessName() 
      << ": Decay of mesons that can decay into a muon \n"
      << " i.e. pi+, pi-, K+, K- and K0_long \n"
      << " kinematics of daughters are dertermined by DecayChannels \n"
      << " polarization of daughter particles are take into account. \n";
}

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

Public Member Functions

Protected Member Functions