Gabriele Cosmo
140 lines
6.1 KiB
C++
140 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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// $Id$
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//
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// -----------------------------------------------------------------------------
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// GEANT 4 class implementation file
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//
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// History: first implementation, Maxim Komogorov, 10-Jul-1998
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// -----------------------------------------------------------------------------
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#ifndef G4LundStringFragmentation_h
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#define G4LundStringFragmentation_h 1
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#include "G4VLongitudinalStringDecay.hh"
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//**************************************************************************************************************
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class G4LundStringFragmentation: public G4VLongitudinalStringDecay
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{
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public:
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G4LundStringFragmentation();
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virtual ~G4LundStringFragmentation();
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virtual G4KineticTrackVector* FragmentString(const G4ExcitedString& theString);
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private:
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// not implemented to protect/forbid use
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G4LundStringFragmentation(const G4LundStringFragmentation &right);
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const G4LundStringFragmentation & operator=(const G4LundStringFragmentation &right);
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int operator==(const G4LundStringFragmentation &right) const;
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int operator!=(const G4LundStringFragmentation &right) const;
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private:
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void SetMinimalStringMass(const G4FragmentingString * const string);
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void SetMinimalStringMass2(const G4double aValue);
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virtual G4bool StopFragmenting(const G4FragmentingString * const string);
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virtual G4bool IsFragmentable(const G4FragmentingString * const string);
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virtual G4bool SplitLast(G4FragmentingString * string,
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G4KineticTrackVector * LeftVector,
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G4KineticTrackVector * RightVector);
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virtual void Sample4Momentum(G4LorentzVector* Mom, G4double Mass,
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G4LorentzVector* AntiMom, G4double AntiMass,
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G4double InitialMass);
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virtual G4LorentzVector * SplitEandP(G4ParticleDefinition * pHadron,
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G4FragmentingString * string,
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G4FragmentingString * newString); // Uzhi
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virtual G4double GetLightConeZ(G4double zmin, G4double zmax,
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G4int PartonEncoding,
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G4ParticleDefinition* pHadron,
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G4double Px, G4double Py);
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G4double lambda(G4double s, G4double m1_Sqr, G4double m2_Sqr);
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private:
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// Internal methods introduced to improve the code structure (AR Nov 2011)
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G4bool Loop_toFragmentString(G4ExcitedString * & theStringInCMS,
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G4KineticTrackVector * & LeftVector,
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G4KineticTrackVector * & RightVector);
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G4bool Diquark_AntiDiquark_belowThreshold_lastSplitting(G4FragmentingString * & string,
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G4ParticleDefinition * & LeftHadron,
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G4ParticleDefinition * & RightHadron);
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G4bool Diquark_AntiDiquark_aboveThreshold_lastSplitting(G4FragmentingString * & string,
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G4ParticleDefinition * & LeftHadron,
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G4ParticleDefinition * & RightHadron);
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G4bool Quark_AntiQuark_lastSplitting(G4FragmentingString * & string,
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G4ParticleDefinition * & LeftHadron,
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G4ParticleDefinition * & RightHadron);
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G4bool Quark_Diquark_lastSplitting(G4FragmentingString * & string,
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G4ParticleDefinition * & LeftHadron,
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G4ParticleDefinition * & RightHadron );
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G4int SampleState(void);
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private:
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// ------ For estimation of a minimal string mass ---------------
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G4double Mass_of_light_quark;
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G4double Mass_of_heavy_quark;
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G4double Mass_of_string_junction;
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// ------ An estimated minimal string mass ----------------------
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G4double MinimalStringMass;
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G4double MinimalStringMass2;
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// ------ Minimal invariant mass used at a string fragmentation -
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G4double WminLUND;
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G4int Meson[3][3][6];
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G4double MesonWeight[3][3][6];
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G4int Baryon[3][3][3][4];
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G4double BaryonWeight[3][3][3][4];
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G4double Prob_QQbar[3];
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// ------ To improve the code structure
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G4ParticleDefinition * FS_LeftHadron[35], * FS_RightHadron[35];
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G4double FS_Weight[35];
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G4int NumberOf_FS;
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};
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//**************************************************************************************************************
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// Class G4LundStringFragmentation
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#endif
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