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G4VAnnihilationCollision.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4VAnnihilationCollision.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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#include "
globals.hh
"
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#include "
G4VAnnihilationCollision.hh
"
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#include "
G4KineticTrack.hh
"
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#include "
G4VCrossSectionSource.hh
"
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#include "
G4Proton.hh
"
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#include "
G4Neutron.hh
"
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#include "
G4XNNElastic.hh
"
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#include "
G4AngularDistribution.hh
"
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#include "
G4ThreeVector.hh
"
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#include "
G4LorentzVector.hh
"
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#include "
G4LorentzRotation.hh
"
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#include "
G4KineticTrackVector.hh
"
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#include "
Randomize.hh
"
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#include "
G4PionPlus.hh
"
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G4VAnnihilationCollision::G4VAnnihilationCollision
()
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{
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theAngularDistribution
=0;
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}
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G4VAnnihilationCollision::~G4VAnnihilationCollision
()
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{
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if
(
theAngularDistribution
) {
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delete
theAngularDistribution
;
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theAngularDistribution
=0;
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}
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}
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G4KineticTrackVector
*
G4VAnnihilationCollision::FinalState
(
const
G4KineticTrack
& trk1,
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const
G4KineticTrack
& trk2)
const
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{
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G4LorentzVector
p
= trk1.
Get4Momentum
() + trk2.
Get4Momentum
();
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G4double
sqrtS = p.
m
();
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// G4double s = sqrtS * sqrtS;
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// G4double m1 = trk1.GetActualMass();
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// G4double m2 = trk2.GetActualMass();
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// Unit vector of three-momentum
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G4ThreeVector
pFinal(0.0, 0.0, 0.0);
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G4double
eFinal = sqrtS;
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G4LorentzVector
p4Final(pFinal, eFinal);
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// Lorentz transformation
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G4LorentzRotation
toLabFrame(p.
boostVector
());
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p4Final *= toLabFrame;
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const
G4ParticleDefinition
* OutputDefinition =
GetOutgoingParticle
(trk1,trk2);
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G4KineticTrack
*
final
=
new
G4KineticTrack
(OutputDefinition, 0.0, trk1.
GetPosition
(), p4Final);
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G4KineticTrackVector
* finalTracks =
new
G4KineticTrackVector
;
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finalTracks->push_back(
final
);
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return
finalTracks;
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}
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geant4
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geant4-10.6-release
source
processes
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src
G4VAnnihilationCollision.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:43
using
1.8.2 with
ECCE GitHub integration