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G4INCLPiNToDeltaChannel.cc
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25 //
26 // INCL++ intra-nuclear cascade model
27 // Alain Boudard, CEA-Saclay, France
28 // Joseph Cugnon, University of Liege, Belgium
29 // Jean-Christophe David, CEA-Saclay, France
30 // Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
31 // Sylvie Leray, CEA-Saclay, France
32 // Davide Mancusi, CEA-Saclay, France
33 //
34 #define INCLXX_IN_GEANT4_MODE 1
35 
36 #include "globals.hh"
37 
39 #include "G4INCLKinematicsUtils.hh"
41 #include "G4INCLRandom.hh"
42 #include "G4INCLGlobals.hh"
43 #include "G4INCLLogger.hh"
44 
45 namespace G4INCL {
46 
48  : particle1(p1), particle2(p2)
49  {
50 
51  }
52 
54 
55  }
56 
58  Particle * nucleon;
59  Particle * pion;
60  if(particle1->isNucleon()) {
61  nucleon = particle1;
62  pion = particle2;
63  } else {
64  nucleon = particle2;
65  pion = particle1;
66  }
67 
68  ParticleType deltaType = DeltaZero;
70  deltaType = DeltaPlusPlus;
72  deltaType = DeltaPlus;
74  deltaType = DeltaPlus;
76  deltaType = DeltaZero;
78  deltaType = DeltaZero;
80  deltaType = DeltaMinus;
81  } else {
82  INCL_ERROR("Unknown particle pair in Pi-N collision." << '\n');
83  }
84 
85  G4double deltaEnergy = nucleon->getEnergy()+ pion->getEnergy();
86 
87  nucleon->setType(deltaType); // nucleon becomes the delta
88  nucleon->setEnergy(deltaEnergy); // set the energy of the delta
89 
90  ThreeVector deltaMomentum = nucleon->getMomentum() + pion->getMomentum();
91  nucleon->setMomentum(deltaMomentum);
92 
93  const G4double deltaMass = std::sqrt(deltaEnergy*deltaEnergy - deltaMomentum.mag2());
94  nucleon->setMass(deltaMass);
95 
96  fs->addModifiedParticle(nucleon); // nucleon became a delta
97  fs->addDestroyedParticle(pion); // pion was removed
98  }
99 
100 }
G4bool pion(G4int ityp)
void addModifiedParticle(Particle *p)
G4double getEnergy() const
void setMass(G4double mass)
const G4INCL::ThreeVector & getMomentum() const
G4bool nucleon(G4int ityp)
double G4double
Definition: G4Types.hh:76
#define INCL_ERROR(x)
void setType(ParticleType t)
void addDestroyedParticle(Particle *p)
virtual void setMomentum(const G4INCL::ThreeVector &momentum)
G4bool isPair(Particle const *const p1, Particle const *const p2, ParticleType t1, ParticleType t2)
G4double mag2() const
void setEnergy(G4double energy)
PiNToDeltaChannel(Particle *, Particle *)
void fillFinalState(FinalState *fs)
G4bool isNucleon() const