Gabriele Cosmo
207 lines
9.6 KiB
C++
207 lines
9.6 KiB
C++
//
|
|
// ********************************************************************
|
|
// * License and Disclaimer *
|
|
// * *
|
|
// * The Geant4 software is copyright of the Copyright Holders of *
|
|
// * the Geant4 Collaboration. It is provided under the terms and *
|
|
// * conditions of the Geant4 Software License, included in the file *
|
|
// * LICENSE and available at http://cern.ch/geant4/license . These *
|
|
// * include a list of copyright holders. *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. Please see the license in the file LICENSE and URL above *
|
|
// * for the full disclaimer and the limitation of liability. *
|
|
// * *
|
|
// * This code implementation is the result of the scientific and *
|
|
// * technical work of the GEANT4 collaboration. *
|
|
// * By using, copying, modifying or distributing the software (or *
|
|
// * any work based on the software) you agree to acknowledge its *
|
|
// * use in resulting scientific publications, and indicate your *
|
|
// * acceptance of all terms of the Geant4 Software license. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
//
|
|
// Class Description
|
|
// Final state production code for hadron inelastic scattering above 3 GeV
|
|
// based on the modeling ansatz used in FRITIOF.
|
|
// To be used in your physics list in case you need this physics.
|
|
// In this case you want to register an object of this class with an object
|
|
// of G4TheoFSGenerator.
|
|
// Class Description - End
|
|
|
|
#ifndef G4FTFModel_h
|
|
#define G4FTFModel_h 1
|
|
|
|
// ------------------------------------------------------------
|
|
// GEANT 4 class header file
|
|
//
|
|
// ---------------- G4FTFModel ----------------
|
|
// by Gunter Folger, May 1998.
|
|
// class implementing the excitation in the FTF Parton String Model
|
|
// ------------------------------------------------------------
|
|
|
|
#include "G4VPartonStringModel.hh"
|
|
#include "G4FTFParameters.hh"
|
|
#include "G4FTFParticipants.hh"
|
|
#include "G4ExcitedStringVector.hh"
|
|
#include "G4DiffractiveExcitation.hh"
|
|
#include "G4ElasticHNScattering.hh"
|
|
#include "G4FTFAnnihilation.hh"
|
|
#include "G4Proton.hh"
|
|
#include "G4Neutron.hh"
|
|
|
|
class G4VSplitableHadron;
|
|
class G4ExcitedString;
|
|
|
|
|
|
class G4FTFModel : public G4VPartonStringModel {
|
|
public:
|
|
G4FTFModel( const G4String& modelName = "FTF" );
|
|
~G4FTFModel();
|
|
|
|
void Init( const G4Nucleus& aNucleus, const G4DynamicParticle& aProjectile );
|
|
G4ExcitedStringVector* GetStrings();
|
|
G4V3DNucleus* GetWoundedNucleus() const;
|
|
G4V3DNucleus* GetTargetNucleus() const;
|
|
G4V3DNucleus* GetProjectileNucleus() const;
|
|
|
|
virtual void ModelDescription( std::ostream& ) const;
|
|
|
|
private:
|
|
G4FTFModel( const G4FTFModel& right );
|
|
const G4FTFModel& operator=( const G4FTFModel& right );
|
|
int operator==( const G4FTFModel& right ) const;
|
|
int operator!=( const G4FTFModel& right ) const;
|
|
|
|
void StoreInvolvedNucleon();
|
|
void ReggeonCascade();
|
|
G4bool PutOnMassShell();
|
|
G4bool ExciteParticipants();
|
|
G4ExcitedStringVector* BuildStrings();
|
|
void GetResiduals();
|
|
|
|
G4bool AdjustNucleons( G4VSplitableHadron* SelectedAntiBaryon,
|
|
G4Nucleon* ProjectileNucleon,
|
|
G4VSplitableHadron* SelectedTargetNucleon,
|
|
G4Nucleon* TargetNucleon,
|
|
G4bool Annihilation );
|
|
// The "AdjustNucleons" method uses the following struct and 3 new utility methods:
|
|
struct CommonVariables {
|
|
G4int TResidualMassNumber = 0, TResidualCharge = 0, PResidualMassNumber = 0,
|
|
PResidualCharge = 0;
|
|
G4double SqrtS = 0.0, S = 0.0, SumMasses = 0.0,
|
|
TResidualExcitationEnergy = 0.0, TResidualMass = 0.0, TNucleonMass = 0.0,
|
|
PResidualExcitationEnergy = 0.0, PResidualMass = 0.0, PNucleonMass = 0.0,
|
|
Mprojectile = 0.0, M2projectile = 0.0, Pzprojectile = 0.0, Eprojectile = 0.0,
|
|
WplusProjectile = 0.0,
|
|
Mtarget = 0.0, M2target = 0.0, Pztarget = 0.0, Etarget = 0.0, WminusTarget = 0.0,
|
|
Mt2targetNucleon = 0.0, PztargetNucleon = 0.0, EtargetNucleon = 0.0,
|
|
Mt2projectileNucleon = 0.0, PzprojectileNucleon = 0.0, EprojectileNucleon = 0.0,
|
|
YtargetNucleus = 0.0, YprojectileNucleus = 0.0,
|
|
XminusNucleon = 0.0, XplusNucleon = 0.0, XminusResidual = 0.0, XplusResidual = 0.0;
|
|
G4ThreeVector PtNucleon, PtResidual, PtNucleonP, PtResidualP, PtNucleonT, PtResidualT;
|
|
G4LorentzVector Psum, Pprojectile, Ptmp, Ptarget, TResidual4Momentum, PResidual4Momentum;
|
|
G4LorentzRotation toCms, toLab;
|
|
};
|
|
G4int AdjustNucleonsAlgorithm_beforeSampling( G4int interactionCase,
|
|
G4VSplitableHadron* SelectedAntiBaryon,
|
|
G4Nucleon* ProjectileNucleon,
|
|
G4VSplitableHadron* SelectedTargetNucleon,
|
|
G4Nucleon* TargetNucleon,
|
|
G4bool Annihilation,
|
|
CommonVariables& common );
|
|
G4bool AdjustNucleonsAlgorithm_Sampling( G4int interactionCase,
|
|
CommonVariables& common );
|
|
void AdjustNucleonsAlgorithm_afterSampling( G4int interactionCase,
|
|
G4VSplitableHadron* SelectedAntiBaryon,
|
|
G4VSplitableHadron* SelectedTargetNucleon,
|
|
CommonVariables& common );
|
|
|
|
G4ThreeVector GaussianPt( G4double AveragePt2, G4double maxPtSquare ) const;
|
|
|
|
G4bool ComputeNucleusProperties( G4V3DNucleus* nucleus, G4LorentzVector& nucleusMomentum,
|
|
G4LorentzVector& residualMomentum, G4double& sumMasses,
|
|
G4double& residualExcitationEnergy, G4double& residualMass,
|
|
G4int& residualMassNumber, G4int& residualCharge );
|
|
// Utility method used by PutOnMassShell.
|
|
|
|
G4bool GenerateDeltaIsobar( const G4double sqrtS, const G4int numberOfInvolvedNucleons,
|
|
G4Nucleon* involvedNucleons[], G4double& sumMasses );
|
|
// Utility method used by PutOnMassShell.
|
|
|
|
G4bool SamplingNucleonKinematics( G4double averagePt2, const G4double maxPt2,
|
|
G4double dCor, G4V3DNucleus* nucleus,
|
|
const G4LorentzVector& pResidual,
|
|
const G4double residualMass, const G4int residualMassNumber,
|
|
const G4int numberOfInvolvedNucleons,
|
|
G4Nucleon* involvedNucleons[], G4double& mass2 );
|
|
|
|
// Utility method used by PutOnMassShell.
|
|
|
|
G4bool CheckKinematics( const G4double sValue, const G4double sqrtS,
|
|
const G4double projectileMass2, const G4double targetMass2,
|
|
const G4double nucleusY, const G4bool isProjectileNucleus,
|
|
const G4int numberOfInvolvedNucleons, G4Nucleon* involvedNucleons[],
|
|
G4double& targetWminus, G4double& projectileWplus, G4bool& success );
|
|
// Utility method used by PutOnMassShell.
|
|
|
|
G4bool FinalizeKinematics( const G4double w, const G4bool isProjectileNucleus,
|
|
const G4LorentzRotation& boostFromCmsToLab,
|
|
const G4double residualMass, const G4int residualMassNumber,
|
|
const G4int numberOfInvolvedNucleons,
|
|
G4Nucleon* involvedNucleons[],
|
|
G4LorentzVector& residual4Momentum );
|
|
// Utility method used by PutOnMassShell.
|
|
|
|
G4ReactionProduct theProjectile;
|
|
G4FTFParticipants theParticipants;
|
|
|
|
G4Nucleon* TheInvolvedNucleonsOfTarget[250];
|
|
G4int NumberOfInvolvedNucleonsOfTarget;
|
|
|
|
G4Nucleon* TheInvolvedNucleonsOfProjectile[250];
|
|
G4int NumberOfInvolvedNucleonsOfProjectile;
|
|
|
|
G4FTFParameters* theParameters;
|
|
G4DiffractiveExcitation* theExcitation;
|
|
G4ElasticHNScattering* theElastic;
|
|
G4FTFAnnihilation* theAnnihilation;
|
|
|
|
std::vector< G4VSplitableHadron* > theAdditionalString;
|
|
|
|
G4double LowEnergyLimit;
|
|
G4bool HighEnergyInter;
|
|
|
|
G4LorentzVector ProjectileResidual4Momentum;
|
|
G4int ProjectileResidualMassNumber;
|
|
G4int ProjectileResidualCharge;
|
|
G4double ProjectileResidualExcitationEnergy;
|
|
|
|
G4LorentzVector TargetResidual4Momentum;
|
|
G4int TargetResidualMassNumber;
|
|
G4int TargetResidualCharge;
|
|
G4double TargetResidualExcitationEnergy;
|
|
};
|
|
|
|
|
|
inline G4V3DNucleus* G4FTFModel::GetWoundedNucleus() const {
|
|
return theParticipants.GetWoundedNucleus();
|
|
}
|
|
|
|
|
|
inline G4V3DNucleus* G4FTFModel::GetTargetNucleus() const {
|
|
return theParticipants.GetWoundedNucleus();
|
|
}
|
|
|
|
|
|
inline G4V3DNucleus* G4FTFModel::GetProjectileNucleus() const {
|
|
return theParticipants.GetProjectileNucleus();
|
|
}
|
|
|
|
#endif
|
|
|