Gabriele Cosmo
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
//
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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 "G4KineticTrack.hh"
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#include "G4XResonance.hh"
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#include "Randomize.hh"
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#include "G4Proton.hh"
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G4XResonance::G4XResonance(const G4ParticleDefinition* in1,
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const G4ParticleDefinition* in2,
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G4int iIsospinOut1, G4double spinOut1, G4double massOut1,
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G4int iIsospinOut2, G4double spinOut2, G4double massOut2,
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G4String subType1, G4String subType2,
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const G4VXResonanceTable& sigmaTable) :
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isoOut1(iIsospinOut1), iSpinOut1(spinOut1), mOut1(massOut1),
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isoOut2(iIsospinOut2), iSpinOut2(spinOut2), mOut2(massOut2)
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{
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table = sigmaTable.CrossSectionTable();
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// Check if there is a valid cross section table for this channel
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if (table == 0)
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throw G4HadronicException(__FILE__, __LINE__, "G4XResonance::G4XResonance - no cross section table available");
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name = in1->GetParticleName() + in2->GetParticleName() + " -> " + subType1 + subType2;
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}
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G4XResonance::~G4XResonance()
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{
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delete table;
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table = 0;
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}
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G4bool G4XResonance::operator==(const G4XResonance &right) const
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{
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return (this == (G4XResonance *) &right);
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}
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G4bool G4XResonance::operator!=(const G4XResonance &right) const
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{
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return (this != (G4XResonance *) &right);
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}
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G4String G4XResonance::Name() const
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{
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return name;
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}
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G4double G4XResonance::CrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const
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{
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G4bool dummy = false;
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G4double sqrtS = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
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// pp -> trk1 + trk2 cross section
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G4double sigma = table->GetValue(sqrtS,dummy);
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// Isospin correction
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// from G4VXResonance;
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// G4cout << "SigmaCheck "<<sigma;
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sigma *= IsospinCorrection(trk1,trk2,isoOut1,isoOut2,iSpinOut1,iSpinOut2); // from G4VXResonance
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// G4cout << " "<<sigma<<G4endl;
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// Detailed balance
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if (trk1.GetDefinition()->IsShortLived() || trk2.GetDefinition()->IsShortLived())
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{
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sigma *= DetailedBalance(trk1,trk2, isoOut1,isoOut2, iSpinOut1,iSpinOut2, mOut1,mOut2);
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}
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return sigma;
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}
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