Gabriele Cosmo
105 lines
3.9 KiB
C++
105 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 "G4INCLPiNToOmegaChannel.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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namespace G4INCL {
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PiNToOmegaChannel::PiNToOmegaChannel(Particle *p1, Particle *p2)
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: particle1(p1), particle2(p2)
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{
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}
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PiNToOmegaChannel::~PiNToOmegaChannel(){
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}
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void PiNToOmegaChannel::fillFinalState(FinalState *fs) {
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Particle * nucleon;
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Particle * pion;
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if(particle1->isNucleon()) {
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nucleon = particle1;
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pion = particle2;
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} else {
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nucleon = particle2;
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pion = particle1;
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}
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G4int iso=ParticleTable::getIsospin(nucleon->getType())+ParticleTable::getIsospin(pion->getType());
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// assert(iso == 1 || iso == -1);
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if (iso == 1) {
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nucleon->setType(Proton);
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}
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else if (iso == -1) {
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nucleon->setType(Neutron);
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}
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pion->setType(Omega);
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// Erase the parent resonance information of the nucleon and pion
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nucleon->setParentResonancePDGCode(0);
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nucleon->setParentResonanceID(0);
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pion->setParentResonancePDGCode(0);
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pion->setParentResonanceID(0);
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// nucleon->setEnergy(std::sqrt((nucleon->getMass())*(nucleon->getMass())+(mom_nucleon.mag()*mom_nucleon.mag())));
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// pion->setEnergy(std::sqrt((pion->getMass())*(pion->getMass())+(mom_nucleon.mag()*mom_nucleon.mag())));
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G4double sh=nucleon->getEnergy()+pion->getEnergy();
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G4double mn=nucleon->getMass();
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G4double me=pion->getMass();
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G4double en=(sh*sh+mn*mn-me*me)/(2*sh);
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nucleon->setEnergy(en);
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G4double ee=std::sqrt(en*en-mn*mn+me*me);
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pion->setEnergy(ee);
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G4double pn=std::sqrt(en*en-mn*mn);
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ThreeVector mom_nucleon = Random::normVector(pn);
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nucleon->setMomentum(mom_nucleon);
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pion->setMomentum(-mom_nucleon);
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fs->addModifiedParticle(nucleon);
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fs->addModifiedParticle(pion);
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}
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}
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