include/Geant4/G4LundStringFragmentation.hh

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0025 //
0026 //
0027 //
0028 // -----------------------------------------------------------------------------
0029 //      GEANT 4 class implementation file
0030 //
0031 //      History: first implementation, Maxim Komogorov, 10-Jul-1998
0032 // -----------------------------------------------------------------------------
0033
0034 #ifndef G4LundStringFragmentation_h
0035 #define G4LundStringFragmentation_h 1
0036
0037 #include "G4VLongitudinalStringDecay.hh"
0038
0039 //******************************************************************************
0040
0041 class G4LundStringFragmentation: public G4VLongitudinalStringDecay
0042 {
0043   public:
0044     G4LundStringFragmentation();
0045     virtual ~G4LundStringFragmentation();
0046
0047     virtual G4KineticTrackVector* FragmentString(const G4ExcitedString& theString);
0048
0049   private:
0050     // not implemented to protect/forbid use
0051     G4LundStringFragmentation(const G4LundStringFragmentation &right);
0052     const G4LundStringFragmentation & operator=(const G4LundStringFragmentation &right);
0053     G4bool operator==(const G4LundStringFragmentation &right) const;
0054     G4bool operator!=(const G4LundStringFragmentation &right) const;
0055
0056   private:
0057     virtual G4bool StopFragmenting(const G4FragmentingString  * const string);
0058     virtual G4bool IsItFragmentable(const G4FragmentingString * const string);
0059
0060     virtual G4bool SplitLast(G4FragmentingString * string,
0061                      G4KineticTrackVector * LeftVector,
0062                      G4KineticTrackVector * RightVector);
0063
0064     virtual void Sample4Momentum(G4LorentzVector* Mom,     G4double Mass,
0065                                  G4LorentzVector* AntiMom, G4double AntiMass,
0066                                  G4double InitialMass);
0067
0068     virtual G4KineticTrack * Splitup(G4FragmentingString *string,
0069                                      G4FragmentingString *&newString);
0070
0071     virtual G4LorentzVector * SplitEandP(G4ParticleDefinition * pHadron,
0072                                          G4FragmentingString * string,
0073                                          G4FragmentingString * newString);
0074
0075     virtual G4double GetLightConeZ(G4double zmin, G4double zmax,
0076                                    G4int PartonEncoding,
0077                                    G4ParticleDefinition* pHadron,
0078                                    G4double Px, G4double Py);
0079
0080     G4double lambda(G4double s, G4double m1_Sqr, G4double m2_Sqr);
0081
0082     // virtual G4ParticleDefinition * QuarkSplitup(G4ParticleDefinition* decay,
0083     //                                             G4ParticleDefinition *&created);
0084
0085     virtual G4ParticleDefinition * DiQuarkSplitup(G4ParticleDefinition* decay,
0086                                                   G4ParticleDefinition *&created);
0087
0088   private:
0089     G4bool Loop_toFragmentString(const G4ExcitedString & theStringInCMS,
0090                                  G4KineticTrackVector * & LeftVector,
0091                                  G4KineticTrackVector * & RightVector);
0092
0093     G4bool Diquark_AntiDiquark_belowThreshold_lastSplitting(G4FragmentingString * & string,
0094                                                             G4ParticleDefinition * & LeftHadron,
0095                                                             G4ParticleDefinition * & RightHadron);
0096
0097     G4bool Diquark_AntiDiquark_aboveThreshold_lastSplitting(G4FragmentingString * & string,
0098                                                             G4ParticleDefinition * & LeftHadron,
0099                                                             G4ParticleDefinition * & RightHadron);
0100
0101     G4bool Quark_AntiQuark_lastSplitting(G4FragmentingString * & string,
0102                                          G4ParticleDefinition * & LeftHadron,
0103                                          G4ParticleDefinition * & RightHadron);
0104
0105     G4bool Quark_Diquark_lastSplitting(G4FragmentingString * & string,
0106                                        G4ParticleDefinition * & LeftHadron,
0107                                        G4ParticleDefinition * & RightHadron );
0108
0109     G4int SampleState(void);
0110
0111     G4double Tmt;  // "Temperature" for sampling Pt of hadrons
0112
0113 };
0114
0115 //******************************************************************************
0116 // Class G4LundStringFragmentation
0117
0118 #endif
0119