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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
38 #include "G4INCLNNToNNKKbChannel.hh"
39 #include "G4INCLKinematicsUtils.hh"
40 #include "G4INCLBinaryCollisionAvatar.hh"
41 #include "G4INCLRandom.hh"
42 #include "G4INCLGlobals.hh"
43 #include "G4INCLLogger.hh"
44 #include <algorithm>
45 #include "G4INCLPhaseSpaceGenerator.hh"
46
47 namespace G4INCL {
48
49 const G4double NNToNNKKbChannel::angularSlope = 2.; // What is the exact effect? Sould be check
50
51 NNToNNKKbChannel::NNToNNKKbChannel(Particle *p1, Particle *p2)
52 : particle1(p1), particle2(p2)
53 {}
54
55 NNToNNKKbChannel::~NNToNNKKbChannel(){}
56
57 void NNToNNKKbChannel::fillFinalState(FinalState *fs) {
58
59 // pp -> pp K+ K- (1)
60 // pp -> pp K0 K0 (1)
61 // pp -> pn K+ K0 (4)
62 // pn -> pp K0 K- (4)
63 // pn -> pn K+ K- (9)
64
65 const G4double sqrtS = KinematicsUtils::totalEnergyInCM(particle1, particle2);
66
67 const G4int iso = ParticleTable::getIsospin(particle1->getType()) + ParticleTable::getIsospin(particle2->getType());
68
69 ParticleType Kaon1Type;
70 ParticleType Kaon2Type;
71 G4double rdm = Random::shoot();
72
73 if(iso == 2){
74 if(rdm*6. < 1.){
75 Kaon1Type = KPlus;
76 Kaon2Type = KMinus;
77 }
78 else if(rdm*6. < 2){
79 Kaon1Type = KZero;
80 Kaon2Type = KZeroBar;
81 }
82 else{
83 Kaon1Type = KPlus;
84 Kaon2Type = KZeroBar;
85 particle1->setType(Neutron);
86 }
87 }
88 else if(iso == -2){
89 if(rdm*6. < 1.){
90 Kaon1Type = KPlus;
91 Kaon2Type = KMinus;
92 }
93 else if(rdm*6. < 2){
94 Kaon1Type = KZero;
95 Kaon2Type = KZeroBar;
96 }
97 else{
98 Kaon1Type = KZero;
99 Kaon2Type = KMinus;
100 particle1->setType(Proton);
101 }
102 }
103 else if(rdm*26. < 9.){
104 Kaon1Type = KPlus;
105 Kaon2Type = KMinus;
106 }
107 else if(rdm*26. < 18.){
108 Kaon1Type = KZero;
109 Kaon2Type = KZeroBar;
110 }
111 else if(rdm*26. < 22.){
112 Kaon1Type = KZero;
113 Kaon2Type = KMinus;
114 particle1->setType(Proton);
115 particle2->setType(Proton);
116 }
117 else{
118 Kaon1Type = KPlus;
119 Kaon2Type = KZeroBar;
120 particle1->setType(Neutron);
121 particle2->setType(Neutron);
122 }
123
124 ParticleList list;
125 list.push_back(particle1);
126 list.push_back(particle2);
127 const ThreeVector &rcol1 = particle1->getPosition();
128 const ThreeVector &rcol2 = particle2->getPosition();
129 const ThreeVector zero;
130 Particle *kaon = new Particle(Kaon1Type,zero,rcol1);
131 Particle *antikaon = new Particle(Kaon2Type,zero,rcol2);
132 list.push_back(kaon);
133 list.push_back(antikaon);
134
135 if(Random::shoot()<0.5) PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope);
136 else PhaseSpaceGenerator::generateBiased(sqrtS, list, 1, angularSlope);
137
138 fs->addModifiedParticle(particle1);
139 fs->addModifiedParticle(particle2);
140 fs->addCreatedParticle(kaon);
141 fs->addCreatedParticle(antikaon);
142
143 }
144 }
145