Geant4  9.6.p02
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
G4LundStringFragmentation.hh
Go to the documentation of this file.
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 // $Id$
28 //
29 // -----------------------------------------------------------------------------
30 // GEANT 4 class implementation file
31 //
32 // History: first implementation, Maxim Komogorov, 10-Jul-1998
33 // -----------------------------------------------------------------------------
34 
35 #ifndef G4LundStringFragmentation_h
36 #define G4LundStringFragmentation_h 1
37 
38 #include "G4VLongitudinalStringDecay.hh"
39 
40 //**************************************************************************************************************
41 
42 class G4LundStringFragmentation: public G4VLongitudinalStringDecay
43  {
44 public:
45 
46  G4LundStringFragmentation();
47  virtual ~G4LundStringFragmentation();
48 
49  virtual G4KineticTrackVector* FragmentString(const G4ExcitedString& theString);
50 
51 private:
52  // not implemented to protect/forbid use
53  G4LundStringFragmentation(const G4LundStringFragmentation &right);
54  const G4LundStringFragmentation & operator=(const G4LundStringFragmentation &right);
55  int operator==(const G4LundStringFragmentation &right) const;
56  int operator!=(const G4LundStringFragmentation &right) const;
57 
58 private:
59  void SetMinimalStringMass(const G4FragmentingString * const string);
60  void SetMinimalStringMass2(const G4double aValue);
61 
62  virtual G4bool StopFragmenting(const G4FragmentingString * const string);
63  virtual G4bool IsFragmentable(const G4FragmentingString * const string);
64 
65  virtual G4bool SplitLast(G4FragmentingString * string,
66  G4KineticTrackVector * LeftVector,
67  G4KineticTrackVector * RightVector);
68 
69  virtual void Sample4Momentum(G4LorentzVector* Mom, G4double Mass,
70  G4LorentzVector* AntiMom, G4double AntiMass,
71  G4double InitialMass);
72 
73  virtual G4LorentzVector * SplitEandP(G4ParticleDefinition * pHadron,
74  G4FragmentingString * string,
75  G4FragmentingString * newString); // Uzhi
76 
77  virtual G4double GetLightConeZ(G4double zmin, G4double zmax,
78  G4int PartonEncoding,
79  G4ParticleDefinition* pHadron,
80  G4double Px, G4double Py);
81 
82  G4double lambda(G4double s, G4double m1_Sqr, G4double m2_Sqr);
83 
84 private:
85  // Internal methods introduced to improve the code structure (AR Nov 2011)
86 
87  G4bool Loop_toFragmentString(G4ExcitedString * & theStringInCMS,
88  G4KineticTrackVector * & LeftVector,
89  G4KineticTrackVector * & RightVector);
90 
91  G4bool Diquark_AntiDiquark_belowThreshold_lastSplitting(G4FragmentingString * & string,
92  G4ParticleDefinition * & LeftHadron,
93  G4ParticleDefinition * & RightHadron);
94 
95  G4bool Diquark_AntiDiquark_aboveThreshold_lastSplitting(G4FragmentingString * & string,
96  G4ParticleDefinition * & LeftHadron,
97  G4ParticleDefinition * & RightHadron);
98 
99  G4bool Quark_AntiQuark_lastSplitting(G4FragmentingString * & string,
100  G4ParticleDefinition * & LeftHadron,
101  G4ParticleDefinition * & RightHadron);
102 
103  G4bool Quark_Diquark_lastSplitting(G4FragmentingString * & string,
104  G4ParticleDefinition * & LeftHadron,
105  G4ParticleDefinition * & RightHadron );
106 
107  G4int SampleState(void);
108 
109 private:
110 // ------ For estimation of a minimal string mass ---------------
111  G4double Mass_of_light_quark;
112  G4double Mass_of_heavy_quark;
113  G4double Mass_of_string_junction;
114 // ------ An estimated minimal string mass ----------------------
115  G4double MinimalStringMass;
116  G4double MinimalStringMass2;
117 // ------ Minimal invariant mass used at a string fragmentation -
118  G4double WminLUND;
119 
120  G4int Meson[3][3][6];
121  G4double MesonWeight[3][3][6];
122 
123  G4int Baryon[3][3][3][4];
124  G4double BaryonWeight[3][3][3][4];
125 
126  G4double Prob_QQbar[3];
127 
128 // ------ To improve the code structure
129  G4ParticleDefinition * FS_LeftHadron[35], * FS_RightHadron[35];
130  G4double FS_Weight[35];
131  G4int NumberOf_FS;
132 
133 };
134 
135 //**************************************************************************************************************
136 // Class G4LundStringFragmentation
137 #endif
138 
139 
Generated on Sat May 25 2013 14:34:05 for Geant4 by   doxygen 1.8.4