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G4INCLNKbToL2piChannel.cc
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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35 
36 #include "globals.hh"
37 
39 #include "G4INCLKinematicsUtils.hh"
41 #include "G4INCLRandom.hh"
42 #include "G4INCLGlobals.hh"
43 #include "G4INCLLogger.hh"
44 #include <algorithm>
46 
47 namespace G4INCL {
48 
49  const G4double NKbToL2piChannel::angularSlope = 4.; // What is the exact effect? Sould be check
50 
52  : particle1(p1), particle2(p2)
53  {}
54 
56 
58 
59  // p K0b -> L pi+ pi0 (1)
60  //
61  // p K- -> L pi+ pi- (1)
62  // p K- -> L pi0 pi0 (1/4)
63 
65  Particle *kaon;
66 
67  if(particle1->isNucleon()){
68  nucleon = particle1;
69  kaon = particle2;
70  }
71  else{
72  nucleon = particle2;
73  kaon = particle1;
74  }
75 
76  const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, kaon);
77 
78  const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(kaon->getType());
79  const G4int iso_n = ParticleTable::getIsospin(nucleon->getType());
80  G4double rdm = Random::shoot();
81 
82  ParticleType PionType;
83 
84  if(iso == 2 || iso == -2){
85  PionType = ParticleTable::getPionType(iso);
86  kaon->setType(PiZero);
87  }
88  else{
89  if(rdm*5. < 4.){
90  PionType = ParticleTable::getPionType(2*iso_n);
91  kaon->setType(ParticleTable::getPionType(-2*iso_n));
92  }
93  else{
94  PionType = PiZero;
95  kaon->setType(PiZero);
96  }
97  }
98 
99  nucleon->setType(Lambda);
100 
101  ParticleList list;
102  list.push_back(nucleon);
103  list.push_back(kaon);
104  const ThreeVector &rcol = nucleon->getPosition();
105  const ThreeVector zero;
106  Particle *pion = new Particle(PionType,zero,rcol);
107  list.push_back(pion);
108 
110 
111  fs->addModifiedParticle(nucleon);
112  fs->addModifiedParticle(kaon);
113  fs->addCreatedParticle(pion);
114 
115  }
116 }