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1 // 2 // ******************************************************************** 3 // * License and Disclaimer * 4 // * * 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. * 10 // * * 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitation of liability. * 17 // * * 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************************************** 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 "G4INCLNKbToL2piChannel.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 NKbToL2piChannel::angularSlope = 4.; // What is the exact effect? Sould be check 50 51 NKbToL2piChannel::NKbToL2piChannel(Particle *p1, Particle *p2) 52 : particle1(p1), particle2(p2) 53 {} 54 55 NKbToL2piChannel::~NKbToL2piChannel(){} 56 57 void NKbToL2piChannel::fillFinalState(FinalState *fs) { 58 59 // p K0b -> L pi+ pi0 (1) 60 // 61 // p K- -> L pi+ pi- (1) 62 // p K- -> L pi0 pi0 (1/4) 63 64 Particle *nucleon; 65 Particle *kaon; 66 67 if(particle1->isNucleon()){ 68 nucleon = particle1; 69 kaon = particle2; 70 } 71 else{ 72 nucleon = particle2; 73 kaon = particle1; 74 } 75 76 const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, kaon); 77 78 const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(kaon->getType()); 79 const G4int iso_n = ParticleTable::getIsospin(nucleon->getType()); 80 G4double rdm = Random::shoot(); 81 82 ParticleType PionType; 83 84 if(iso == 2 || iso == -2){ 85 PionType = ParticleTable::getPionType(iso); 86 kaon->setType(PiZero); 87 } 88 else{ 89 if(rdm*5. < 4.){ 90 PionType = ParticleTable::getPionType(2*iso_n); 91 kaon->setType(ParticleTable::getPionType(-2*iso_n)); 92 } 93 else{ 94 PionType = PiZero; 95 kaon->setType(PiZero); 96 } 97 } 98 99 nucleon->setType(Lambda); 100 101 ParticleList list; 102 list.push_back(nucleon); 103 list.push_back(kaon); 104 const ThreeVector &rcol = nucleon->getPosition(); 105 const ThreeVector zero; 106 Particle *pion = new Particle(PionType,zero,rcol); 107 list.push_back(pion); 108 109 PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope); 110 111 fs->addModifiedParticle(nucleon); 112 fs->addModifiedParticle(kaon); 113 fs->addCreatedParticle(pion); 114 115 } 116 } 117