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G4INCLNpiToLK2piChannel.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4INCLNpiToLK2piChannel.cc
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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// INCL++ intra-nuclear cascade model
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// Alain Boudard, CEA-Saclay, France
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// Joseph Cugnon, University of Liege, Belgium
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// Jean-Christophe David, CEA-Saclay, France
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// Pekka Kaitaniemi, CEA-Saclay, France, and Helsinki Institute of Physics, Finland
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// Sylvie Leray, CEA-Saclay, France
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// Davide Mancusi, CEA-Saclay, France
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//
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#define INCLXX_IN_GEANT4_MODE 1
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#include "
globals.hh
"
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#include "
G4INCLNpiToLK2piChannel.hh
"
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#include "
G4INCLKinematicsUtils.hh
"
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#include "
G4INCLBinaryCollisionAvatar.hh
"
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#include "
G4INCLRandom.hh
"
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#include "
G4INCLGlobals.hh
"
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#include "
G4INCLLogger.hh
"
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#include <algorithm>
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#include "
G4INCLPhaseSpaceGenerator.hh
"
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namespace
G4INCL {
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const
G4double
NpiToLK2piChannel::angularSlope
= 6.;
// What is the exact effect? Sould be check
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NpiToLK2piChannel::NpiToLK2piChannel
(
Particle
*p1,
Particle
*p2)
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: particle1(p1), particle2(p2)
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{}
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NpiToLK2piChannel::~NpiToLK2piChannel
(){}
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void
NpiToLK2piChannel::fillFinalState
(
FinalState
*
fs
) {
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// p pi+ -> L K+ pi+ pi0 (1)
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// p pi+ -> L K0 pi+ pi+ (1)
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//
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// p pi0 -> L K+ pi0 pi0 (1/4)
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// p pi0 -> L K+ pi+ pi- (1)
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// p pi0 -> L K0 pi+ pi0 (1/2)
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//
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// p pi- -> L K+ pi0 pi- (1)
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// p pi- -> L K0 pi+ pi- (1)
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// p pi- -> L K0 pi0 pi0 (1/2)
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Particle
*
nucleon
;
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Particle
*
pion
;
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if
(
particle1
->
isNucleon
()){
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nucleon =
particle1
;
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pion =
particle2
;
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}
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else
{
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nucleon =
particle2
;
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pion =
particle1
;
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}
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const
G4double
sqrtS =
KinematicsUtils::totalEnergyInCM
(nucleon, pion);
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const
G4int
iso =
ParticleTable::getIsospin
(nucleon->
getType
()) +
ParticleTable::getIsospin
(pion->
getType
());
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G4double
rdm =
Random::shoot
();
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ParticleType
KaonType;
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ParticleType
PionType;
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if
(iso == 3 || iso == -3){
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if
(rdm < 0.5){
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KaonType =
ParticleTable::getKaonType
(iso/3);
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PionType =
PiZero
;
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}
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else
{
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KaonType =
ParticleTable::getKaonType
(-iso/3);
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PionType =
ParticleTable::getPionType
(2*iso/3);
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}
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}
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else
if
(pion->
getType
() ==
PiZero
){
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if
(rdm*7. < 1.){
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KaonType =
ParticleTable::getKaonType
(iso);
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PionType =
PiZero
;
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}
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else
if
(rdm*7. < 5.){
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KaonType =
ParticleTable::getKaonType
(iso);
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pion->
setType
(
PiPlus
);
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PionType =
PiMinus
;
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}
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else
{
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KaonType =
ParticleTable::getKaonType
(-iso);
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PionType =
ParticleTable::getPionType
(2*iso);
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}
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}
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else
{
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if
(rdm*5. < 2.){
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KaonType =
ParticleTable::getKaonType
(-iso);
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PionType =
PiZero
;
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}
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else
if
(rdm*5. < 4.){
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KaonType =
ParticleTable::getKaonType
(iso);
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PionType =
ParticleTable::getPionType
(-2*iso);;
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}
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else
{
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KaonType =
ParticleTable::getKaonType
(iso);
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pion->
setType
(
PiZero
);
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PionType =
PiZero
;
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}
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}
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nucleon->
setType
(
Lambda
);
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ParticleList
list;
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list.push_back(nucleon);
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list.push_back(pion);
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const
ThreeVector
&rcol1 = nucleon->
getPosition
();
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const
ThreeVector
&rcol2 = pion->
getPosition
();
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const
ThreeVector
zero
;
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Particle
*kaon =
new
Particle
(KaonType,zero,rcol1);
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Particle
*pion2 =
new
Particle
(PionType,zero,rcol2);
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list.push_back(kaon);
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list.push_back(pion2);
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PhaseSpaceGenerator::generateBiased
(sqrtS, list, 0,
angularSlope
);
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INCL_DEBUG
(
"NpiToLK2pi "
<< (kaon->
getMomentum
().
theta
()) * 180. /
G4INCL::Math::pi
<<
'\n'
);
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fs->
addModifiedParticle
(nucleon);
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fs->
addModifiedParticle
(pion);
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fs->
addCreatedParticle
(kaon);
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fs->
addCreatedParticle
(pion2);
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}
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}
geant4
tree
geant4-10.6-release
source
processes
hadronic
models
inclxx
incl_physics
src
G4INCLNpiToLK2piChannel.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:45
using
1.8.2 with
ECCE GitHub integration