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G4XMesonBaryonElastic.cc
Go to the documentation of this file.
Or view
the newest version in sPHENIX GitHub for file G4XMesonBaryonElastic.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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//
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#include "
globals.hh
"
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#include "
G4ios.hh
"
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#include "
G4XMesonBaryonElastic.hh
"
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#include "
G4KineticTrack.hh
"
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#include "
G4Gamma.hh
"
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#include "
G4PionPlus.hh
"
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#include "
G4Proton.hh
"
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#include "
G4XAqmElastic.hh
"
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#include "
G4XPDGElastic.hh
"
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G4XMesonBaryonElastic::G4XMesonBaryonElastic
()
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{
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// As a first approximation the model is assumed to be valid over
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// the entire energy range
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lowLimit
= 0.;
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highLimit
=
DBL_MAX
;
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}
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G4XMesonBaryonElastic::~G4XMesonBaryonElastic
()
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{ }
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G4bool
G4XMesonBaryonElastic::operator==
(
const
G4XMesonBaryonElastic
&
right
)
const
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{
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return
(
this
== (
G4XMesonBaryonElastic
*) &right);
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}
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G4bool
G4XMesonBaryonElastic::operator!=
(
const
G4XMesonBaryonElastic
&
right
)
const
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{
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return
(
this
!= (
G4XMesonBaryonElastic
*) &right);
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}
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G4double
G4XMesonBaryonElastic::CrossSection
(
const
G4KineticTrack
& trk1,
const
G4KineticTrack
& trk2)
const
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{
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G4double
sigma;
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// No gamma-baryon elastic scattering
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const
G4ParticleDefinition
* defLight =
FindLightParticle
(trk1,trk2);
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if
(defLight ==
G4Gamma::GammaDefinition
())
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{
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sigma = 0;
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}
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else
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{
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G4LorentzVector
p41 = trk1.
Get4Momentum
();
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G4ThreeVector
p3 = trk1.
GetPosition
();
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G4ParticleDefinition
* def =
G4PionPlus::PionPlusDefinition
();
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G4KineticTrack
piTrk(def,
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trk1.
GetFormationTime
(),
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p3,
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(
G4LorentzVector
&)p41);
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G4LorentzVector
p42 = trk2.
Get4Momentum
();
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G4KineticTrack
pTrk(((
G4ParticleDefinition
*)
G4Proton::ProtonDefinition
()),
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trk2.
GetFormationTime
(),
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(
G4ThreeVector
)trk2.
GetPosition
(),
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(
G4LorentzVector
&)p42);
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G4XAqmElastic
aqm;
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G4double
xAqmDummy = aqm.
CrossSection
(piTrk,pTrk);
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G4double
xAqm = aqm.
CrossSection
(trk1,trk2);
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G4double
factor = 1.;
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if
(xAqmDummy != 0.0)
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{
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factor = xAqm / xAqmDummy;
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}
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G4XPDGElastic
pdg
;
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sigma = pdg.
CrossSection
(piTrk,pTrk);
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sigma = sigma * factor;
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}
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return
sigma;
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}
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G4String
G4XMesonBaryonElastic::Name
()
const
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{
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G4String
name
(
"MesonBaryonElasticCrossSection"
);
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return
name
;
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}
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G4bool
G4XMesonBaryonElastic::IsValid
(
G4double
e
)
const
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{
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G4bool
answer =
InLimits
(e,
lowLimit
,
highLimit
);
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return
answer;
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}
geant4
tree
geant4-10.6-release
source
processes
hadronic
models
im_r_matrix
src
G4XMesonBaryonElastic.cc
Built by
Jin Huang
. updated:
Wed Jun 29 2022 17:25:44
using
1.8.2 with
ECCE GitHub integration