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G4INCLNpiToNKKbChannel.cc
Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file G4INCLNpiToNKKbChannel.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 NpiToNKKbChannel::angularSlope = 6.; // What is the exact effect? Sould be check
50 
52  : particle1(p1), particle2(p2)
53  {}
54 
56 
58 
59  // p pi+ -> p K+ K0b (1/2)
60 
61  // p pi0 -> p K0 K0b (1/4)
62  // p pi0 -> p K+ K- (1/4)
63  // p pi0 -> n K+ K0b (1)
64 
65  // p pi- -> p K0 K- (1/2)
66  // p pi- -> n K+ K- (1)
67  // p pi- -> n K0 K0b (1)
68 
70  Particle *pion;
71 
72 
73  if(particle1->isNucleon()){
74  nucleon = particle1;
75  pion = particle2;
76  }
77  else{
78  nucleon = particle2;
79  pion = particle1;
80  }
81 
82  const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, pion);
83 
84  const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(pion->getType());
85  G4double rdm = Random::shoot();
86 
87  ParticleType KaonType;
88 
89  if(iso == 3 || iso == -3){
90  KaonType = ParticleTable::getKaonType(iso/3);
92  }
93  else if(pion->getType() == PiZero){
94  if(rdm*6. < 1.){
95  KaonType = ParticleTable::getKaonType(-iso);
97  }
98  else if(rdm*6. < 2.){
99  KaonType = ParticleTable::getKaonType(iso);
101  }
102  else{
103  KaonType = ParticleTable::getKaonType(iso);
105  nucleon->setType(ParticleTable::getNucleonType(-iso));
106  }
107  }
108  else{
109  if(rdm*5. < 1.){
110  KaonType = ParticleTable::getKaonType(iso);
112  }
113  else if(rdm*5. < 3.){
114  KaonType = ParticleTable::getKaonType(-iso);
116  nucleon->setType(ParticleTable::getNucleonType(iso));
117  }
118  else{
119  KaonType = ParticleTable::getKaonType(iso);
121  nucleon->setType(ParticleTable::getNucleonType(iso));
122  }
123  }
124 
125  ParticleList list;
126  list.push_back(nucleon);
127  list.push_back(pion);
128  const ThreeVector &rcol = pion->getPosition();
129  const ThreeVector zero;
130  Particle *kaon = new Particle(KaonType,zero,rcol);
131  list.push_back(kaon);
132 
134 
135  INCL_DEBUG("NpiToNKKb " << (kaon->getMomentum().theta()) * 180. / G4INCL::Math::pi << '\n');
136 
137  fs->addModifiedParticle(nucleon);
138  fs->addModifiedParticle(pion);
139  fs->addCreatedParticle(kaon);
140 
141  }
142 }