Gabriele Cosmo
122 lines
6.1 KiB
C++
122 lines
6.1 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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#ifndef G4DiffractiveExcitation_h
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#define G4DiffractiveExcitation_h 1
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// ------------------------------------------------------------
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// GEANT 4 class header file
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//
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// ---------------- G4DiffractiveExcitation --------------
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// by Gunter Folger, October 1998.
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// diffractive Excitation used by strings models
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// Take a projectile and a target
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// excite the projectile and target
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// ------------------------------------------------------------
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#include "globals.hh"
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#include "G4FTFParameters.hh"
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#include "G4ElasticHNScattering.hh"
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#include "G4ThreeVector.hh"
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#include "G4LorentzVector.hh"
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#include "G4LorentzRotation.hh"
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class G4VSplitableHadron;
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class G4ExcitedString;
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class G4DiffractiveExcitation {
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public:
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G4DiffractiveExcitation();
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virtual ~G4DiffractiveExcitation();
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virtual G4bool ExciteParticipants( G4VSplitableHadron* aPartner,
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G4VSplitableHadron* bPartner,
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G4FTFParameters* theParameters,
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G4ElasticHNScattering* theElastic,
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G4bool& isDiffractive ) const;
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virtual void CreateStrings( G4VSplitableHadron* aHadron,
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G4bool isProjectile,
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G4ExcitedString*& FirstString,
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G4ExcitedString*& SecondString,
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G4FTFParameters* theParameters ) const;
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private:
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G4DiffractiveExcitation( const G4DiffractiveExcitation& right );
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const G4DiffractiveExcitation& operator=( const G4DiffractiveExcitation& right );
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G4bool operator==( const G4DiffractiveExcitation& right ) const;
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G4bool operator!=( const G4DiffractiveExcitation& right ) const;
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G4double LambdaF(G4double sqrM, G4double sqrM1, G4double sqrM2) const;
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G4ThreeVector GaussianPt( G4double AveragePt2, G4double maxPtSquare ) const;
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G4double ChooseP( G4double Pmin, G4double Pmax ) const;
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G4double GetQuarkFractionOfKink( G4double zmin, G4double zmax ) const;
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void UnpackMeson( G4int IdPDG, G4int& Q1, G4int& Q2 ) const;
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void UnpackBaryon( G4int IdPDG, G4int& Q1, G4int& Q2, G4int& Q3 ) const;
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G4int NewNucleonId( G4int Q1, G4int Q2, G4int Q3 ) const;
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// The "ExciteParticipants" method uses the following struct and 3 new utility methods:
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struct CommonVariables {
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G4int ProjectilePDGcode = 0, absProjectilePDGcode = 0, TargetPDGcode = 0,
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absTargetPDGcode = 0;
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G4double M0projectile = 0.0, M0projectile2 = 0.0, M0target = 0.0, M0target2 = 0.0,
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ProjMassT = 0.0, ProjMassT2 = 0.0, TargMassT = 0.0, TargMassT2 = 0.0,
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MminProjectile = 0.0, MminTarget = 0.0,
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ProjectileDiffStateMinMass = 0.0, ProjectileDiffStateMinMass2 = 0.0,
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ProjectileNonDiffStateMinMass = 0.0, ProjectileNonDiffStateMinMass2 = 0.0,
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TargetDiffStateMinMass = 0.0, TargetDiffStateMinMass2 = 0.0,
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TargetNonDiffStateMinMass = 0.0, TargetNonDiffStateMinMass2 = 0.0,
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S = 0.0, SqrtS = 0.0, Pt2 = 0.0, PZcms = 0.0, PZcms2 = 0.0,
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AveragePt2 = 0.0, maxPtSquare = 0.0,
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ProbExc = 0.0, Qminus = 0.0, Qplus = 0.0,
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PMinusNew = 0.0, PPlusNew = 0.0, TMinusNew = 0.0, TPlusNew = 0.0,
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PMinusMin = 0.0, PMinusMax = 0.0, TPlusMin = 0.0, TPlusMax = 0.0,
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ProbProjectileDiffraction = 0.0, ProbTargetDiffraction = 0.0, ProbOfDiffraction = 0.0;
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G4LorentzVector Pprojectile, Ptarget, Qmomentum;
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G4LorentzRotation toCms, toLab;
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G4SampleResonance BrW;
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};
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G4int ExciteParticipants_doChargeExchange( G4VSplitableHadron* projectile,
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G4VSplitableHadron* target,
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G4FTFParameters* theParameters,
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G4ElasticHNScattering* theElastic,
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CommonVariables& common ) const;
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G4bool ExciteParticipants_doDiffraction( G4VSplitableHadron* projectile,
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G4VSplitableHadron* target,
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G4FTFParameters* theParameters,
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CommonVariables& common ) const;
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G4bool ExciteParticipants_doNonDiffraction( G4VSplitableHadron* projectile,
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G4VSplitableHadron* target,
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G4FTFParameters* theParameters,
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CommonVariables& common ) const;
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};
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#endif
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