Gabriele Cosmo
117 lines
3.9 KiB
C++
117 lines
3.9 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// INCL++ intra-nuclear cascade model
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// Alain Boudard, CEA-Saclay, France
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// Joseph Cugnon, University of Liege, Belgium
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// Jean-Christophe David, CEA-Saclay, France
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// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
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// Sylvie Leray, CEA-Saclay, France
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// Davide Mancusi, CEA-Saclay, France
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//
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#define INCLXX_IN_GEANT4_MODE 1
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#include "globals.hh"
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#include "G4INCLNKbToL2piChannel.hh"
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#include "G4INCLKinematicsUtils.hh"
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#include "G4INCLBinaryCollisionAvatar.hh"
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#include "G4INCLRandom.hh"
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#include "G4INCLGlobals.hh"
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#include "G4INCLLogger.hh"
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#include <algorithm>
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#include "G4INCLPhaseSpaceGenerator.hh"
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namespace G4INCL {
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const G4double NKbToL2piChannel::angularSlope = 4.; // What is the exact effect? Sould be check
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NKbToL2piChannel::NKbToL2piChannel(Particle *p1, Particle *p2)
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: particle1(p1), particle2(p2)
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{}
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NKbToL2piChannel::~NKbToL2piChannel(){}
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void NKbToL2piChannel::fillFinalState(FinalState *fs) {
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// p K0b -> L pi+ pi0 (1)
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//
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// p K- -> L pi+ pi- (1)
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// p K- -> L pi0 pi0 (1/4)
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Particle *nucleon;
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Particle *kaon;
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if(particle1->isNucleon()){
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nucleon = particle1;
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kaon = particle2;
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}
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else{
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nucleon = particle2;
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kaon = particle1;
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}
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const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, kaon);
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const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(kaon->getType());
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const G4int iso_n = ParticleTable::getIsospin(nucleon->getType());
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G4double rdm = Random::shoot();
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ParticleType PionType;
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if(iso == 2 || iso == -2){
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PionType = ParticleTable::getPionType(iso);
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kaon->setType(PiZero);
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}
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else{
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if(rdm*5. < 4.){
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PionType = ParticleTable::getPionType(2*iso_n);
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kaon->setType(ParticleTable::getPionType(-2*iso_n));
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}
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else{
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PionType = PiZero;
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kaon->setType(PiZero);
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}
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}
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nucleon->setType(Lambda);
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ParticleList list;
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list.push_back(nucleon);
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list.push_back(kaon);
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const ThreeVector &rcol = nucleon->getPosition();
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const ThreeVector zero;
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Particle *pion = new Particle(PionType,zero,rcol);
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list.push_back(pion);
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PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope);
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fs->addModifiedParticle(nucleon);
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fs->addModifiedParticle(kaon);
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fs->addCreatedParticle(pion);
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}
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}
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