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25 // 25 //
26 // INCL++ intra-nuclear cascade model 26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France 27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium 28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France 29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and H 30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France 31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France 32 // Davide Mancusi, CEA-Saclay, France
33 // 33 //
34 #define INCLXX_IN_GEANT4_MODE 1 34 #define INCLXX_IN_GEANT4_MODE 1
35 35
36 #include "globals.hh" 36 #include "globals.hh"
37 37
38 #include "G4INCLNpiToLK2piChannel.hh" 38 #include "G4INCLNpiToLK2piChannel.hh"
39 #include "G4INCLKinematicsUtils.hh" 39 #include "G4INCLKinematicsUtils.hh"
40 #include "G4INCLBinaryCollisionAvatar.hh" 40 #include "G4INCLBinaryCollisionAvatar.hh"
41 #include "G4INCLRandom.hh" 41 #include "G4INCLRandom.hh"
42 #include "G4INCLGlobals.hh" 42 #include "G4INCLGlobals.hh"
43 #include "G4INCLLogger.hh" 43 #include "G4INCLLogger.hh"
44 #include <algorithm> 44 #include <algorithm>
45 #include "G4INCLPhaseSpaceGenerator.hh" 45 #include "G4INCLPhaseSpaceGenerator.hh"
46 46
47 namespace G4INCL { 47 namespace G4INCL {
48 48
49 const G4double NpiToLK2piChannel::angularSlo 49 const G4double NpiToLK2piChannel::angularSlope = 6.; // What is the exact effect? Sould be check
50 50
51 NpiToLK2piChannel::NpiToLK2piChannel(Particl 51 NpiToLK2piChannel::NpiToLK2piChannel(Particle *p1, Particle *p2)
52 : particle1(p1), particle2(p2) 52 : particle1(p1), particle2(p2)
53 {} 53 {}
54 54
55 NpiToLK2piChannel::~NpiToLK2piChannel(){} 55 NpiToLK2piChannel::~NpiToLK2piChannel(){}
56 56
57 void NpiToLK2piChannel::fillFinalState(Final 57 void NpiToLK2piChannel::fillFinalState(FinalState *fs) {
58 58
59 // p pi+ -> L K+ pi+ pi0 (1) 59 // p pi+ -> L K+ pi+ pi0 (1)
60 // p pi+ -> L K0 pi+ pi+ (1) 60 // p pi+ -> L K0 pi+ pi+ (1)
61 // 61 //
62 // p pi0 -> L K+ pi0 pi0 (1/4) 62 // p pi0 -> L K+ pi0 pi0 (1/4)
63 // p pi0 -> L K+ pi+ pi- (1) 63 // p pi0 -> L K+ pi+ pi- (1)
64 // p pi0 -> L K0 pi+ pi0 (1/2) 64 // p pi0 -> L K0 pi+ pi0 (1/2)
65 // 65 //
66 // p pi- -> L K+ pi0 pi- (1) 66 // p pi- -> L K+ pi0 pi- (1)
67 // p pi- -> L K0 pi+ pi- (1) 67 // p pi- -> L K0 pi+ pi- (1)
68 // p pi- -> L K0 pi0 pi0 (1/2) 68 // p pi- -> L K0 pi0 pi0 (1/2)
69 69
70 Particle *nucleon; 70 Particle *nucleon;
71 Particle *pion; 71 Particle *pion;
72 72
73 if(particle1->isNucleon()){ 73 if(particle1->isNucleon()){
74 nucleon = particle1; 74 nucleon = particle1;
75 pion = particle2; 75 pion = particle2;
76 } 76 }
77 else{ 77 else{
78 nucleon = particle2; 78 nucleon = particle2;
79 pion = particle1; 79 pion = particle1;
80 } 80 }
81 81
82 const G4double sqrtS = KinematicsUtils::to 82 const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, pion);
83 83
84 const G4int iso = ParticleTable::getIsospi 84 const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(pion->getType());
85 G4double rdm = Random::shoot(); 85 G4double rdm = Random::shoot();
86 86
87 ParticleType KaonType; 87 ParticleType KaonType;
88 ParticleType PionType; 88 ParticleType PionType;
89 89
90 if(iso == 3 || iso == -3){ 90 if(iso == 3 || iso == -3){
91 if(rdm < 0.5){ 91 if(rdm < 0.5){
92 KaonType = ParticleTable::getKaonType( 92 KaonType = ParticleTable::getKaonType(iso/3);
93 PionType = PiZero; 93 PionType = PiZero;
94 } 94 }
95 else{ 95 else{
96 KaonType = ParticleTable::getKaonType( 96 KaonType = ParticleTable::getKaonType(-iso/3);
97 PionType = ParticleTable::getPionType( 97 PionType = ParticleTable::getPionType(2*iso/3);
98 } 98 }
99 } 99 }
100 else if(pion->getType() == PiZero){ 100 else if(pion->getType() == PiZero){
101 if(rdm*7. < 1.){ 101 if(rdm*7. < 1.){
102 KaonType = ParticleTable::getKaonType( 102 KaonType = ParticleTable::getKaonType(iso);
103 PionType = PiZero; 103 PionType = PiZero;
104 } 104 }
105 else if(rdm*7. < 5.){ 105 else if(rdm*7. < 5.){
106 KaonType = ParticleTable::getKaonType( 106 KaonType = ParticleTable::getKaonType(iso);
107 pion->setType(PiPlus); 107 pion->setType(PiPlus);
108 PionType = PiMinus; 108 PionType = PiMinus;
109 } 109 }
110 else{ 110 else{
111 KaonType = ParticleTable::getKaonType( 111 KaonType = ParticleTable::getKaonType(-iso);
112 PionType = ParticleTable::getPionType( 112 PionType = ParticleTable::getPionType(2*iso);
113 } 113 }
114 } 114 }
115 else{ 115 else{
116 if(rdm*5. < 2.){ 116 if(rdm*5. < 2.){
117 KaonType = ParticleTable::getKaonType( 117 KaonType = ParticleTable::getKaonType(-iso);
118 PionType = PiZero; 118 PionType = PiZero;
119 } 119 }
120 else if(rdm*5. < 4.){ 120 else if(rdm*5. < 4.){
121 KaonType = ParticleTable::getKaonType( 121 KaonType = ParticleTable::getKaonType(iso);
122 PionType = ParticleTable::getPionType( 122 PionType = ParticleTable::getPionType(-2*iso);;
123 } 123 }
124 else{ 124 else{
125 KaonType = ParticleTable::getKaonType( 125 KaonType = ParticleTable::getKaonType(iso);
126 pion->setType(PiZero); 126 pion->setType(PiZero);
127 PionType = PiZero; 127 PionType = PiZero;
128 } 128 }
129 } 129 }
130 130
131 nucleon->setType(Lambda); 131 nucleon->setType(Lambda);
132 <<
133 #ifdef INCLXX_IN_GEANT4_MODE <<
134 // Erase the parent resonance information <<
135 nucleon->setParentResonancePDGCode(0); <<
136 nucleon->setParentResonanceID(0); <<
137 pion->setParentResonancePDGCode(0); <<
138 pion->setParentResonanceID(0); <<
139 #endif <<
140 132
141 ParticleList list; 133 ParticleList list;
142 list.push_back(nucleon); 134 list.push_back(nucleon);
143 list.push_back(pion); 135 list.push_back(pion);
144 const ThreeVector &rcol1 = nucleon->getPos 136 const ThreeVector &rcol1 = nucleon->getPosition();
145 const ThreeVector &rcol2 = pion->getPositi 137 const ThreeVector &rcol2 = pion->getPosition();
146 const ThreeVector zero; 138 const ThreeVector zero;
147 Particle *kaon = new Particle(KaonType,zer 139 Particle *kaon = new Particle(KaonType,zero,rcol1);
148 Particle *pion2 = new Particle(PionType,ze 140 Particle *pion2 = new Particle(PionType,zero,rcol2);
149 list.push_back(kaon); 141 list.push_back(kaon);
150 list.push_back(pion2); 142 list.push_back(pion2);
151 143
152 PhaseSpaceGenerator::generateBiased(sqrtS, 144 PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope);
153 145
154 INCL_DEBUG("NpiToLK2pi " << (kaon->getMome 146 INCL_DEBUG("NpiToLK2pi " << (kaon->getMomentum().theta()) * 180. / G4INCL::Math::pi << '\n');
155 147
156 fs->addModifiedParticle(nucleon); 148 fs->addModifiedParticle(nucleon);
157 fs->addModifiedParticle(pion); 149 fs->addModifiedParticle(pion);
158 fs->addCreatedParticle(kaon); 150 fs->addCreatedParticle(kaon);
159 fs->addCreatedParticle(pion2); 151 fs->addCreatedParticle(pion2);
160 152
161 } 153 }
162 } 154 }
163 155