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Geant4/processes/hadronic/models/inclxx/incl_physics/src/G4INCLNNbarElasticChannel.cc

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Diff markup

Differences between /processes/hadronic/models/inclxx/incl_physics/src/G4INCLNNbarElasticChannel.cc (Version 11.3.0) and /processes/hadronic/models/inclxx/incl_physics/src/G4INCLNNbarElasticChannel.cc (Version 11.2)


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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 "G4INCLNNbarElasticChannel.hh"            38 #include "G4INCLNNbarElasticChannel.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   NNbarElasticChannel::NNbarElasticChannel(Par     49   NNbarElasticChannel::NNbarElasticChannel(Particle *p1, Particle *p2)
 50     : particle1(p1), particle2(p2)                 50     : particle1(p1), particle2(p2)
 51     {}                                             51     {}
 52                                                    52   
 53   NNbarElasticChannel::~NNbarElasticChannel(){     53   NNbarElasticChannel::~NNbarElasticChannel(){}
 54                                                    54   
 55   void NNbarElasticChannel::fillFinalState(Fin     55   void NNbarElasticChannel::fillFinalState(FinalState *fs) {
 56                                                    56 
 57         //brief ppbar                              57         //brief ppbar
 58         // p pbar -> p pbar (BFMM 2)               58         // p pbar -> p pbar (BFMM 2)
 59         //                                         59         //
 60         //brief npbar                              60         //brief npbar
 61         // n pbar -> n pbar (BFMM 472)             61         // n pbar -> n pbar (BFMM 472)
 62         //                                         62         //
 63         //brief nnbar                              63         //brief nnbar
 64         // n nbar -> n nbar (same as BFMM 2)       64         // n nbar -> n nbar (same as BFMM 2)
 65         //                                         65         //
 66         //brief pnbar                              66         //brief pnbar 
 67         // p nbar -> p nbar (same as BFMM 472)     67         // p nbar -> p nbar (same as BFMM 472)
 68         //                                         68         //
 69         //                                         69         // 
 70                                                    70 
 71                                                    71     
 72                                                    72 
 73     Particle *nucleon;                             73     Particle *nucleon;
 74     Particle *antinucleon;                         74     Particle *antinucleon;
 75                                                    75     
 76     if(particle1->isNucleon()){                    76     if(particle1->isNucleon()){
 77       nucleon = particle1;                         77       nucleon = particle1;
 78       antinucleon = particle2;                     78       antinucleon = particle2;
 79     }                                              79     }
 80     else{                                          80     else{
 81       nucleon = particle2;                         81       nucleon = particle2;
 82       antinucleon = particle1;                     82       antinucleon = particle1;
 83     }                                              83     }
 84                                                    84     
 85     const G4double sqrtS = KinematicsUtils::to     85     const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, antinucleon);
 86                                                    86     
 87     G4double mn=nucleon->getMass();                87     G4double mn=nucleon->getMass();
 88     G4double my=antinucleon->getMass();            88     G4double my=antinucleon->getMass();
 89                                                    89     
 90     G4double ey=(sqrtS*sqrtS+my*my-mn*mn)/(2*s     90     G4double ey=(sqrtS*sqrtS+my*my-mn*mn)/(2*sqrtS);
 91     G4double en=std::sqrt(ey*ey-my*my+mn*mn);      91     G4double en=std::sqrt(ey*ey-my*my+mn*mn);
 92     nucleon->setEnergy(en);                        92     nucleon->setEnergy(en);
 93     antinucleon->setEnergy(ey);                    93     antinucleon->setEnergy(ey);
 94     G4double py=std::sqrt(ey*ey-my*my);            94     G4double py=std::sqrt(ey*ey-my*my);
 95                                                    95     
 96     ThreeVector mom_antinucleon = Random::norm     96     ThreeVector mom_antinucleon = Random::normVector(py);
 97                                                    97 
 98     antinucleon->setMomentum(mom_antinucleon);     98     antinucleon->setMomentum(mom_antinucleon);
 99     nucleon->setMomentum(-mom_antinucleon);        99     nucleon->setMomentum(-mom_antinucleon);
100                                                   100     
101     fs->addModifiedParticle(nucleon);             101     fs->addModifiedParticle(nucleon);
102     fs->addModifiedParticle(antinucleon);         102     fs->addModifiedParticle(antinucleon);
103   }                                               103   }
104 }                                                 104 }
105                                                   105