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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 "G4INCLNSToNSChannel.hh" 38 #include "G4INCLNSToNSChannel.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 NSToNSChannel::NSToNSChannel(Particle *p1, P 49 NSToNSChannel::NSToNSChannel(Particle *p1, Particle *p2)
50 : particle1(p1), particle2(p2) 50 : particle1(p1), particle2(p2)
51 {} 51 {}
52 52
53 NSToNSChannel::~NSToNSChannel(){} 53 NSToNSChannel::~NSToNSChannel(){}
54 54
55 void NSToNSChannel::fillFinalState(FinalStat 55 void NSToNSChannel::fillFinalState(FinalState *fs) {
56 56
57 Particle *nucleon; 57 Particle *nucleon;
58 Particle *sigma; 58 Particle *sigma;
59 59
60 if(particle1->isNucleon()){ 60 if(particle1->isNucleon()){
61 nucleon = particle1; 61 nucleon = particle1;
62 sigma = particle2; 62 sigma = particle2;
63 } 63 }
64 else{ 64 else{
65 nucleon = particle2; 65 nucleon = particle2;
66 sigma = particle1; 66 sigma = particle1;
67 } 67 }
68 68
69 const G4double sqrtS = KinematicsUtils::to 69 const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, sigma);
70 const G4int iso = ParticleTable::getIsospi 70 const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(sigma->getType());
71 // assert(iso == -1 || iso == 1); 71 // assert(iso == -1 || iso == 1);
72 72
73 if(sigma->getType() == SigmaZero){ 73 if(sigma->getType() == SigmaZero){
74 nucleon->setType(ParticleTable::getNucle 74 nucleon->setType(ParticleTable::getNucleonType(-iso));
75 sigma->setType(ParticleTable::getSigmaTy 75 sigma->setType(ParticleTable::getSigmaType(2*iso));
76 } 76 }
77 else{ 77 else{
78 nucleon->setType(ParticleTable::getNucle 78 nucleon->setType(ParticleTable::getNucleonType(iso));
79 sigma->setType(SigmaZero); 79 sigma->setType(SigmaZero);
80 } 80 }
81 81
82 G4double mn=nucleon->getMass(); 82 G4double mn=nucleon->getMass();
83 G4double my=sigma->getMass(); 83 G4double my=sigma->getMass();
84 84
85 G4double ey=(sqrtS*sqrtS+my*my-mn*mn)/(2*s 85 G4double ey=(sqrtS*sqrtS+my*my-mn*mn)/(2*sqrtS);
86 G4double en=std::sqrt(ey*ey-my*my+mn*mn); 86 G4double en=std::sqrt(ey*ey-my*my+mn*mn);
87 nucleon->setEnergy(en); 87 nucleon->setEnergy(en);
88 sigma->setEnergy(ey); 88 sigma->setEnergy(ey);
89 G4double py=std::sqrt(ey*ey-my*my); 89 G4double py=std::sqrt(ey*ey-my*my);
90 90
91 ThreeVector mom_hyperon = Random::normVect 91 ThreeVector mom_hyperon = Random::normVector(py);
92 92
93 sigma->setMomentum(mom_hyperon); 93 sigma->setMomentum(mom_hyperon);
94 nucleon->setMomentum(-mom_hyperon); 94 nucleon->setMomentum(-mom_hyperon);
95 95
96 sigma->adjustEnergyFromMomentum(); 96 sigma->adjustEnergyFromMomentum();
97 nucleon->adjustEnergyFromMomentum(); 97 nucleon->adjustEnergyFromMomentum();
98 98
99 fs->addModifiedParticle(nucleon); 99 fs->addModifiedParticle(nucleon);
100 fs->addModifiedParticle(sigma); 100 fs->addModifiedParticle(sigma);
101 101
102 } 102 }
103 } 103 }
104 104