G4INCLNNToNSKpiChannel.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 "G4INCLNNToNSKpiChannel.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 NNToNSKpiChannel::angularSlope = 2.; // What is the exact effect? Sould be check
  
  NNToNSKpiChannel::NNToNSKpiChannel(Particle *p1, Particle *p2)
    : particle1(p1), particle2(p2)
    {}
  
  NNToNSKpiChannel::~NNToNSKpiChannel(){}
  
  void NNToNSKpiChannel::fillFinalState(FinalState *fs) {
    
    // pp (36)  pn (36)
    //
        // pp -> p pi+ S- K+ (9)
        // pp -> p pi+ S0 K0 (9)
        // pp -> p pi0 S+ K0 (4)
        // pp -> n pi+ S+ K0 (2)
        // pp -> p pi0 S0 K+ (4)
        // pp -> n pi+ S0 K+ (2)
        // pp -> p pi- S+ K+ (2)
        // pp -> n pi0 S+ K+ (4)
        
        // pn -> p pi0 S- K+ (4)
        // pn -> n pi+ S- K+ (2)
        // pn -> p pi0 S0 K0 (2)
        // pn -> n pi+ S0 K0 (1)
        // pn -> p pi+ S- K0 (9)
    
    const G4double sqrtS = KinematicsUtils::totalEnergyInCM(particle1, particle2);
    
    const G4int iso = ParticleTable::getIsospin(particle1->getType()) + ParticleTable::getIsospin(particle2->getType());
    
    ParticleType KaonType;
    ParticleType PionType;
    
    G4double rdm = Random::shoot();
    
    if(iso == 2){
      if(rdm * 36. < 9.){
        KaonType = KPlus;
        PionType = PiPlus;
        particle2->setType(SigmaMinus);
      }
      else if(rdm * 36. < 18.){
        KaonType = KZero;
        PionType = PiPlus;
        particle2->setType(SigmaZero);
      }
      else if(rdm * 36. < 22.){
        KaonType = KZero;
        PionType = PiZero;
        particle2->setType(SigmaPlus);
      }
      else if(rdm * 36. < 24.){
        KaonType = KZero;
        PionType = PiPlus;
        particle1->setType(Neutron);
        particle2->setType(SigmaPlus);
      }
      else if(rdm * 36. < 28.){
        KaonType = KPlus;
        PionType = PiZero;
        particle2->setType(SigmaZero);
      }
      else if(rdm * 36. < 30.){
        KaonType = KPlus;
        PionType = PiPlus;
        particle1->setType(Neutron);
        particle2->setType(SigmaZero);
      }
      else if(rdm * 36. < 32.){
        KaonType = KPlus;
        PionType = PiMinus;
        particle2->setType(SigmaPlus);
      }
      else{
        KaonType = KPlus;
        PionType = PiZero;
        particle1->setType(Neutron);
        particle2->setType(SigmaPlus);
      }
      
    }
    else if(iso == -2){
      if(rdm * 36. < 9.){
        KaonType = KZero;
        PionType = PiMinus;
        particle2->setType(SigmaPlus);
      }
      else if(rdm * 36. < 18.){
        KaonType = KPlus;
        PionType = PiMinus;
        particle2->setType(SigmaZero);
      }
      else if(rdm * 36. < 22.){
        KaonType = KPlus;
        PionType = PiZero;
        particle2->setType(SigmaMinus);
      }
      else if(rdm * 36. < 24.){
        KaonType = KPlus;
        PionType = PiMinus;
        particle1->setType(Proton);
        particle2->setType(SigmaMinus);
      }
      else if(rdm * 36. < 28.){
        KaonType = KZero;
        PionType = PiZero;
        particle2->setType(SigmaZero);
      }
      else if(rdm * 36. < 30.){
        KaonType = KZero;
        PionType = PiMinus;
        particle1->setType(Proton);
        particle2->setType(SigmaZero);
      }
      else if(rdm * 36. < 32.){
        KaonType = KZero;
        PionType = PiPlus;
        particle2->setType(SigmaMinus);
      }
      else{
        KaonType = KZero;
        PionType = PiZero;
        particle1->setType(Proton);
        particle2->setType(SigmaMinus);
      }
      
    }
    else if(rdm*36. < 4.){
      KaonType = KPlus;
      PionType = PiZero;
      particle1->setType(Proton);
      particle2->setType(SigmaMinus);
    }
    else if(rdm*36. < 6.){
      KaonType = KZero;
      PionType = PiZero;
      particle1->setType(Neutron);
      particle2->setType(SigmaPlus);
    }
    else if(rdm*36. < 8.){
      KaonType = KPlus;
      PionType = PiPlus;
      particle1->setType(Neutron);
      particle2->setType(SigmaMinus);
    }
    else if(rdm*36. < 9.){
      KaonType = KZero;
      PionType = PiMinus;
      particle1->setType(Proton);
      particle2->setType(SigmaPlus);
    }
    else if(rdm*36. < 18.){
      KaonType = KZero;
      PionType = PiZero;
      particle1->setType(Proton);
      particle2->setType(SigmaZero);
    }
    else if(rdm*36. < 27.){
      KaonType = KPlus;
      PionType = PiZero;
      particle1->setType(Neutron);
      particle2->setType(SigmaZero);
    }
    else if(rdm*36. < 28.){
      KaonType = KZero;
      PionType = PiPlus;
      particle1->setType(Neutron);
      particle2->setType(SigmaZero);
    }
    else if(rdm*36. < 30.){
      KaonType = KPlus;
      PionType = PiMinus;
      particle1->setType(Proton);
      particle2->setType(SigmaZero);
    }
    else if(rdm*36. < 32.){
      KaonType = KZero;
      PionType = PiPlus;
      particle1->setType(Proton);
      particle2->setType(SigmaMinus);
    }
    else{
      KaonType = KPlus;
      PionType = PiMinus;
      particle1->setType(Neutron);
      particle2->setType(SigmaPlus);
    }
    
    ParticleList list;
    list.push_back(particle1);
    list.push_back(particle2);
    const ThreeVector &rcol1 = particle1->getPosition();
    const ThreeVector &rcol2 = particle2->getPosition();
    const ThreeVector zero;
    Particle *pion = new Particle(PionType,zero,rcol1);
    Particle *kaon = new Particle(KaonType,zero,rcol2);
    list.push_back(kaon);
    list.push_back(pion);
    
    PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope);
    
    INCL_DEBUG("NNToNSKpi " << (kaon->getMomentum().theta()) * 180. / G4INCL::Math::pi << '\n');
    
    fs->addModifiedParticle(particle1);
    fs->addModifiedParticle(particle2);
    fs->addCreatedParticle(kaon);
    fs->addCreatedParticle(pion);
    
  }
}