G4LundStringFragmentation.hh

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