Geant4 11.1.1
Toolkit for the simulation of the passage of particles through matter
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G4INCL::NpiToLKpiChannel Class Reference

#include <G4INCLNpiToLKpiChannel.hh>

+ Inheritance diagram for G4INCL::NpiToLKpiChannel:

Public Member Functions

 NpiToLKpiChannel (Particle *, Particle *)
 
virtual ~NpiToLKpiChannel ()
 
void fillFinalState (FinalState *fs)
 
- Public Member Functions inherited from G4INCL::IChannel
 IChannel ()
 
virtual ~IChannel ()
 
FinalStategetFinalState ()
 
virtual void fillFinalState (FinalState *fs)=0
 

Detailed Description

Definition at line 47 of file G4INCLNpiToLKpiChannel.hh.

Constructor & Destructor Documentation

◆ NpiToLKpiChannel()

G4INCL::NpiToLKpiChannel::NpiToLKpiChannel ( Particle p1,
Particle p2 
)

Definition at line 51 of file G4INCLNpiToLKpiChannel.cc.

52 : particle1(p1), particle2(p2)
53 {}

◆ ~NpiToLKpiChannel()

G4INCL::NpiToLKpiChannel::~NpiToLKpiChannel ( )
virtual

Definition at line 55 of file G4INCLNpiToLKpiChannel.cc.

55{}

Member Function Documentation

◆ fillFinalState()

void G4INCL::NpiToLKpiChannel::fillFinalState ( FinalState fs)
virtual

Implements G4INCL::IChannel.

Definition at line 57 of file G4INCLNpiToLKpiChannel.cc.

57 {
58
59 // ratio
60 // p pi+ (1) p pi0 (3/2) p pi- (2)
61 //
62 // p pi0 -> L K+ pi0 (1/2)
63 // all the others (1)
64
65 Particle *nucleon;
66 Particle *pion;
67
68 if(particle1->isNucleon()){
69 nucleon = particle1;
70 pion = particle2;
71 }
72 else{
73 nucleon = particle2;
74 pion = particle1;
75 }
76
77 const G4double sqrtS = KinematicsUtils::totalEnergyInCM(nucleon, pion);
78
79 const G4int iso = ParticleTable::getIsospin(nucleon->getType()) + ParticleTable::getIsospin(pion->getType());
80 G4double rdm = Random::shoot();
81
82 ParticleType KaonType;
83
84 if(iso == 3 || iso == -3){
85 KaonType = ParticleTable::getKaonType(iso/3);
86 }
87 else if(pion->getType() == PiZero){
88 if(rdm*3. < 1.){
89 KaonType = ParticleTable::getKaonType(iso);
90 }
91 else{
92 KaonType = ParticleTable::getKaonType(-iso);
93 pion->setType(ParticleTable::getPionType(2*iso));
94 }
95 }
96 else{
97 if(rdm < 0.5){
98 KaonType = ParticleTable::getKaonType(-iso);
99 }
100 else{
101 KaonType = ParticleTable::getKaonType(iso);
102 pion->setType(PiZero);
103 }
104 }
105
106 nucleon->setType(Lambda);
107
108 // Erase the parent resonance information of the nucleon and pion
109 nucleon->setParentResonancePDGCode(0);
110 nucleon->setParentResonanceID(0);
111 pion->setParentResonancePDGCode(0);
112 pion->setParentResonanceID(0);
113
114 ParticleList list;
115 list.push_back(nucleon);
116 list.push_back(pion);
117 const ThreeVector &rcol = nucleon->getPosition();
118 const ThreeVector zero;
119 Particle *kaon = new Particle(KaonType,zero,rcol);
120 list.push_back(kaon);
121
122 PhaseSpaceGenerator::generateBiased(sqrtS, list, 0, angularSlope);
123
124 INCL_DEBUG("NpiToLKpi " << (kaon->getMomentum().theta()) * 180. / G4INCL::Math::pi << '\n');
125
126 fs->addModifiedParticle(nucleon);
127 fs->addModifiedParticle(pion);
128 fs->addCreatedParticle(kaon);
129
130 }
#define INCL_DEBUG(x)
double G4double
Definition: G4Types.hh:83
int G4int
Definition: G4Types.hh:85
G4bool isNucleon() const
G4double totalEnergyInCM(Particle const *const p1, Particle const *const p2)
const G4double pi
ParticleType getKaonType(const G4int isosp)
Get the type of kaon.
G4int getIsospin(const ParticleType t)
Get the isospin of a particle.
ParticleType getPionType(const G4int isosp)
Get the type of pion.
void generateBiased(const G4double sqrtS, ParticleList &particles, const size_t index, const G4double slope)
Generate a biased event in the CM system.
G4double shoot()
Definition: G4INCLRandom.cc:93
G4bool pion(G4int ityp)
G4bool nucleon(G4int ityp)

The documentation for this class was generated from the following files: