Geant4 Cross Reference |
1 // 1 // 2 // ******************************************* 2 // ******************************************************************** 3 // * License and Disclaimer 3 // * License and Disclaimer * 4 // * 4 // * * 5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These * 9 // * include a list of copyright holders. 9 // * include a list of copyright holders. * 10 // * 10 // * * 11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // 26 // 27 27 28 #include "globals.hh" 28 #include "globals.hh" 29 #include "G4ios.hh" 29 #include "G4ios.hh" 30 #include "G4XMesonBaryonElastic.hh" 30 #include "G4XMesonBaryonElastic.hh" 31 #include "G4KineticTrack.hh" 31 #include "G4KineticTrack.hh" 32 #include "G4Gamma.hh" 32 #include "G4Gamma.hh" 33 #include "G4PionPlus.hh" 33 #include "G4PionPlus.hh" 34 #include "G4Proton.hh" 34 #include "G4Proton.hh" 35 #include "G4XAqmElastic.hh" 35 #include "G4XAqmElastic.hh" 36 #include "G4XPDGElastic.hh" 36 #include "G4XPDGElastic.hh" 37 37 38 G4XMesonBaryonElastic::G4XMesonBaryonElastic() 38 G4XMesonBaryonElastic::G4XMesonBaryonElastic() 39 { 39 { 40 // As a first approximation the model is ass 40 // As a first approximation the model is assumed to be valid over 41 // the entire energy range 41 // the entire energy range 42 lowLimit = 0.; 42 lowLimit = 0.; 43 highLimit = DBL_MAX; 43 highLimit = DBL_MAX; 44 } 44 } 45 45 46 46 47 G4XMesonBaryonElastic::~G4XMesonBaryonElastic( 47 G4XMesonBaryonElastic::~G4XMesonBaryonElastic() 48 { } 48 { } 49 49 50 50 51 G4bool G4XMesonBaryonElastic::operator==(const 51 G4bool G4XMesonBaryonElastic::operator==(const G4XMesonBaryonElastic &right) const 52 { 52 { 53 return (this == (G4XMesonBaryonElastic *) &r 53 return (this == (G4XMesonBaryonElastic *) &right); 54 } 54 } 55 55 56 56 57 G4bool G4XMesonBaryonElastic::operator!=(const 57 G4bool G4XMesonBaryonElastic::operator!=(const G4XMesonBaryonElastic &right) const 58 { 58 { 59 return (this != (G4XMesonBaryonElastic *) &r 59 return (this != (G4XMesonBaryonElastic *) &right); 60 } 60 } 61 61 62 62 63 G4double G4XMesonBaryonElastic::CrossSection(c 63 G4double G4XMesonBaryonElastic::CrossSection(const G4KineticTrack& trk1, const G4KineticTrack& trk2) const 64 { 64 { 65 G4double sigma; 65 G4double sigma; 66 66 67 // No gamma-baryon elastic scattering 67 // No gamma-baryon elastic scattering 68 const G4ParticleDefinition* defLight = FindL 68 const G4ParticleDefinition* defLight = FindLightParticle(trk1,trk2); 69 if (defLight == G4Gamma::GammaDefinition()) 69 if (defLight == G4Gamma::GammaDefinition()) 70 { 70 { 71 sigma = 0; 71 sigma = 0; 72 } 72 } 73 else 73 else 74 { 74 { 75 75 76 G4LorentzVector p41 = trk1.Get4Momentum( 76 G4LorentzVector p41 = trk1.Get4Momentum(); 77 G4ThreeVector p3 = trk1.GetPosition(); 77 G4ThreeVector p3 = trk1.GetPosition(); 78 G4ParticleDefinition* def = G4PionPlus:: 78 G4ParticleDefinition* def = G4PionPlus::PionPlusDefinition(); 79 79 80 G4KineticTrack piTrk(def, 80 G4KineticTrack piTrk(def, 81 trk1.GetFormationTime(), 81 trk1.GetFormationTime(), 82 p3, 82 p3, 83 (G4LorentzVector&)p41); 83 (G4LorentzVector&)p41); 84 84 85 G4LorentzVector p42 = trk2.Get4Momentum( 85 G4LorentzVector p42 = trk2.Get4Momentum(); 86 G4KineticTrack pTrk(((G4ParticleDefiniti 86 G4KineticTrack pTrk(((G4ParticleDefinition*)G4Proton::ProtonDefinition()), 87 trk2.GetFormationTime(), 87 trk2.GetFormationTime(), 88 (G4ThreeVector)trk2.GetPosition(), 88 (G4ThreeVector)trk2.GetPosition(), 89 (G4LorentzVector&)p42); 89 (G4LorentzVector&)p42); 90 90 91 G4XAqmElastic aqm; 91 G4XAqmElastic aqm; 92 G4double xAqmDummy = aqm.CrossSection(pi 92 G4double xAqmDummy = aqm.CrossSection(piTrk,pTrk); 93 G4double xAqm = aqm.CrossSection(trk1,tr 93 G4double xAqm = aqm.CrossSection(trk1,trk2); 94 G4double factor = 1.; 94 G4double factor = 1.; 95 if (xAqmDummy != 0.0) 95 if (xAqmDummy != 0.0) 96 { 96 { 97 factor = xAqm / xAqmDummy; 97 factor = xAqm / xAqmDummy; 98 } 98 } 99 G4XPDGElastic pdg; 99 G4XPDGElastic pdg; 100 100 101 sigma = pdg.CrossSection(piTrk,pTrk); 101 sigma = pdg.CrossSection(piTrk,pTrk); 102 sigma = sigma * factor; 102 sigma = sigma * factor; 103 } 103 } 104 104 105 return sigma; 105 return sigma; 106 } 106 } 107 107 108 108 109 G4String G4XMesonBaryonElastic::Name() const 109 G4String G4XMesonBaryonElastic::Name() const 110 { 110 { 111 G4String name("MesonBaryonElasticCrossSectio 111 G4String name("MesonBaryonElasticCrossSection"); 112 return name; 112 return name; 113 } 113 } 114 114 115 115 116 116 117 G4bool G4XMesonBaryonElastic::IsValid(G4double 117 G4bool G4XMesonBaryonElastic::IsValid(G4double e) const 118 { 118 { 119 G4bool answer = InLimits(e,lowLimit,highLimi 119 G4bool answer = InLimits(e,lowLimit,highLimit); 120 120 121 return answer; 121 return answer; 122 } 122 } 123 123