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25 //
26 //
27 //
28 // -----------------------------------------------------------------------------
29 // GEANT 4 class implementation file
30 //
31 // History: first implementation, Maxim Komogorov, 10-Jul-1998
32 // -----------------------------------------------------------------------------
33
34 #ifndef G4LundStringFragmentation_h
35 #define G4LundStringFragmentation_h 1
36
37 #include "G4VLongitudinalStringDecay.hh"
38
39 //******************************************************************************
40
41 class G4LundStringFragmentation: public G4VLongitudinalStringDecay
42 {
43 public:
44 G4LundStringFragmentation();
45 virtual ~G4LundStringFragmentation();
46
47 virtual G4KineticTrackVector* FragmentString(const G4ExcitedString& theString);
48
49 private:
50 // not implemented to protect/forbid use
51 G4LundStringFragmentation(const G4LundStringFragmentation &right);
52 const G4LundStringFragmentation & operator=(const G4LundStringFragmentation &right);
53 G4bool operator==(const G4LundStringFragmentation &right) const;
54 G4bool operator!=(const G4LundStringFragmentation &right) const;
55
56 private:
57 virtual G4bool StopFragmenting(const G4FragmentingString * const string);
58 virtual G4bool IsItFragmentable(const G4FragmentingString * const string);
59
60 virtual G4bool SplitLast(G4FragmentingString * string,
61 G4KineticTrackVector * LeftVector,
62 G4KineticTrackVector * RightVector);
63
64 virtual void Sample4Momentum(G4LorentzVector* Mom, G4double Mass,
65 G4LorentzVector* AntiMom, G4double AntiMass,
66 G4double InitialMass);
67
68 virtual G4KineticTrack * Splitup(G4FragmentingString *string,
69 G4FragmentingString *&newString);
70
71 virtual G4LorentzVector * SplitEandP(G4ParticleDefinition * pHadron,
72 G4FragmentingString * string,
73 G4FragmentingString * newString);
74
75 virtual G4double GetLightConeZ(G4double zmin, G4double zmax,
76 G4int PartonEncoding,
77 G4ParticleDefinition* pHadron,
78 G4double Px, G4double Py);
79
80 G4double lambda(G4double s, G4double m1_Sqr, G4double m2_Sqr);
81
82 // virtual G4ParticleDefinition * QuarkSplitup(G4ParticleDefinition* decay,
83 // G4ParticleDefinition *&created);
84
85 virtual G4ParticleDefinition * DiQuarkSplitup(G4ParticleDefinition* decay,
86 G4ParticleDefinition *&created);
87
88 private:
89 G4bool Loop_toFragmentString(const G4ExcitedString & theStringInCMS,
90 G4KineticTrackVector * & LeftVector,
91 G4KineticTrackVector * & RightVector);
92
93 G4bool Diquark_AntiDiquark_belowThreshold_lastSplitting(G4FragmentingString * & string,
94 G4ParticleDefinition * & LeftHadron,
95 G4ParticleDefinition * & RightHadron);
96
97 G4bool Diquark_AntiDiquark_aboveThreshold_lastSplitting(G4FragmentingString * & string,
98 G4ParticleDefinition * & LeftHadron,
99 G4ParticleDefinition * & RightHadron);
100
101 G4bool Quark_AntiQuark_lastSplitting(G4FragmentingString * & string,
102 G4ParticleDefinition * & LeftHadron,
103 G4ParticleDefinition * & RightHadron);
104
105 G4bool Quark_Diquark_lastSplitting(G4FragmentingString * & string,
106 G4ParticleDefinition * & LeftHadron,
107 G4ParticleDefinition * & RightHadron );
108
109 G4int SampleState(void);
110
111 G4double Tmt; // "Temperature" for sampling Pt of hadrons
112
113 };
114
115 //******************************************************************************
116 // Class G4LundStringFragmentation
117
118 #endif
119
120