G4INCLNYElasticChannel.cc

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//
// INCL++ intra-nuclear cascade model
// Alain Boudard, CEA-Saclay, France
// Joseph Cugnon, University of Liege, Belgium
// Jean-Christophe David, CEA-Saclay, France
// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
// Sylvie Leray, CEA-Saclay, France
// Davide Mancusi, CEA-Saclay, France
//
#define INCLXX_IN_GEANT4_MODE 1
 
#include "globals.hh"
 
#include "G4INCLNYElasticChannel.hh"
#include "G4INCLKinematicsUtils.hh"
#include "G4INCLBinaryCollisionAvatar.hh"
#include "G4INCLRandom.hh"
#include "G4INCLGlobals.hh"
#include "G4INCLLogger.hh"
#include <algorithm>
#include "G4INCLPhaseSpaceGenerator.hh"
 
namespace G4INCL {
    
    NYElasticChannel::NYElasticChannel(Particle *p1, Particle *p2)
        : particle1(p1), particle2(p2)
        {}
    
    NYElasticChannel::~NYElasticChannel(){}
    
    void NYElasticChannel::fillFinalState(FinalState *fs) {
        
        Particle *nucleon;
        Particle *hyperon;
        
        if(particle1->isNucleon()){
            nucleon = particle1;
            hyperon = particle2;
        }
        else{
            nucleon = particle2;
            hyperon = particle1;
        }
        
        const G4double Pcm = KinematicsUtils::momentumInCM(nucleon, hyperon);
        
        ThreeVector mom_hyperon = Random::normVector(Pcm);
 
        hyperon->setMomentum(mom_hyperon);
        nucleon->setMomentum(-mom_hyperon);
        
        hyperon->adjustEnergyFromMomentum();
        nucleon->adjustEnergyFromMomentum();
        
        fs->addModifiedParticle(nucleon);
        fs->addModifiedParticle(hyperon);
                
    }
}