G4INCLNDeltaToNLKChannel.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 "G4INCLNDeltaToNLKChannel.hh"
#include "G4INCLKinematicsUtils.hh"
#include "G4INCLBinaryCollisionAvatar.hh"
#include "G4INCLRandom.hh"
#include "G4INCLGlobals.hh"
#include "G4INCLLogger.hh"
#include <algorithm>
#include "G4INCLPhaseSpaceGenerator.hh"
 
namespace G4INCL {
    
    const G4double NDeltaToNLKChannel::angularSlope = 2.;
    
    NDeltaToNLKChannel::NDeltaToNLKChannel(Particle *p1, Particle *p2)
        : particle1(p1), particle2(p2)
        {}
    
    NDeltaToNLKChannel::~NDeltaToNLKChannel(){}
    
    void NDeltaToNLKChannel::fillFinalState(FinalState *fs) {
        // D++ n -> p L K+ (3)
        //
        // D+  p -> p L K+ (1)
        //
        // D+  n -> p L K0 (1)
        // D+  n -> n L K+ (1)
        
        const G4double sqrtS = KinematicsUtils::totalEnergyInCM(particle1, particle2);
        
        const G4int iso = ParticleTable::getIsospin(particle1->getType()) + ParticleTable::getIsospin(particle2->getType());
        
        ParticleType KaonType;
        ParticleType NucleonType;
        particle2->setType(Lambda);
        
        if(std::abs(iso) == 2){// D++ n and D+ p
            KaonType = ParticleTable::getKaonType(iso/2);
            NucleonType = ParticleTable::getNucleonType(iso/2);
        }
        else if(Random::shoot() < 0.5){// D+  n
            KaonType = KPlus;
            NucleonType = Neutron;
        }
        else{// D+  n
            KaonType = KZero;
            NucleonType = Proton;
        }
        particle1->setType(NucleonType);
        
        ParticleList list;
        list.push_back(particle1);
        list.push_back(particle2);
        const ThreeVector &rcol = particle2->getPosition();
        const ThreeVector zero;
        Particle *kaon = new Particle(KaonType,zero,rcol);
        list.push_back(kaon);
        
        if(Random::shoot()<0.5) PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope);
        else PhaseSpaceGenerator::generateBiased(sqrtS, list, 1, angularSlope);
        
        fs->addModifiedParticle(particle1);
        fs->addModifiedParticle(particle2);
        fs->addCreatedParticle(kaon);
        
    }
}