[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // ----------------------------------------------------------------------------- |
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| 28 | // GEANT 4 class implementation file |
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| 29 | // |
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| 30 | // History: first implementation, A. Feliciello, 20th May 1998 |
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| 31 | // ----------------------------------------------------------------------------- |
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| 32 | |
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| 33 | #include "globals.hh" |
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| 34 | #include "G4ios.hh" |
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| 35 | #include <cmath> |
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| 36 | |
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| 37 | #include "Randomize.hh" |
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| 38 | #include "G4SimpleIntegration.hh" |
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| 39 | #include "G4ThreeVector.hh" |
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| 40 | #include "G4LorentzVector.hh" |
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| 41 | #include "G4KineticTrack.hh" |
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| 42 | #include "G4KineticTrackVector.hh" |
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| 43 | #include "G4ParticleDefinition.hh" |
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| 44 | #include "G4DecayTable.hh" |
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| 45 | #include "G4GeneralPhaseSpaceDecay.hh" |
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| 46 | #include "G4DecayProducts.hh" |
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| 47 | #include "G4LorentzRotation.hh" |
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| 48 | #include "G4SampleResonance.hh" |
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| 49 | #include "G4Integrator.hh" |
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| 50 | #include "G4KaonZero.hh" |
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| 51 | #include "G4KaonZeroShort.hh" |
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| 52 | #include "G4KaonZeroLong.hh" |
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| 53 | #include "G4AntiKaonZero.hh" |
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| 54 | |
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| 55 | #include "G4HadTmpUtil.hh" |
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| 56 | |
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| 57 | // |
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| 58 | // Some static clobal for integration |
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| 59 | // |
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| 60 | |
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| 61 | static G4double G4KineticTrack_Gmass, G4KineticTrack_xmass1; |
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| 62 | |
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| 63 | // |
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| 64 | // Default constructor |
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| 65 | // |
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| 66 | |
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| 67 | G4KineticTrack::G4KineticTrack() : |
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| 68 | theDefinition(0), |
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| 69 | theFormationTime(0), |
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| 70 | thePosition(0), |
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| 71 | the4Momentum(0), |
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| 72 | theFermi3Momentum(0), |
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| 73 | theTotal4Momentum(0), |
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| 74 | theNucleon(0), |
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| 75 | nChannels(0), |
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| 76 | theActualMass(0), |
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| 77 | theActualWidth(0), |
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| 78 | theDaughterMass(0), |
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| 79 | theDaughterWidth(0), |
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| 80 | theStateToNucleus(undefined), |
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| 81 | theProjectilePotential(0) |
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| 82 | { |
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| 83 | //////////////// |
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| 84 | // DEBUG // |
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| 85 | //////////////// |
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| 86 | |
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| 87 | /* |
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| 88 | G4cerr << G4endl << G4endl << G4endl; |
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| 89 | G4cerr << " G4KineticTrack default constructor invoked! \n"; |
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| 90 | G4cerr << " =========================================== \n" << G4endl; |
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| 91 | */ |
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| 92 | } |
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| 93 | |
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| 94 | |
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| 95 | |
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| 96 | // |
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| 97 | // Copy constructor |
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| 98 | // |
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| 99 | |
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| 100 | G4KineticTrack::G4KineticTrack(const G4KineticTrack &right) : G4VKineticNucleon() |
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| 101 | { |
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| 102 | G4int i; |
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| 103 | theDefinition = right.GetDefinition(); |
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| 104 | theFormationTime = right.GetFormationTime(); |
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| 105 | thePosition = right.GetPosition(); |
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| 106 | the4Momentum = right.GetTrackingMomentum(); |
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| 107 | theFermi3Momentum = right.theFermi3Momentum; |
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| 108 | theTotal4Momentum = right.theTotal4Momentum; |
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| 109 | theNucleon=right.theNucleon; |
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| 110 | nChannels = right.GetnChannels(); |
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| 111 | theActualMass = right.GetActualMass(); |
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| 112 | theActualWidth = new G4double[nChannels]; |
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| 113 | for (i = 0; i < nChannels; i++) |
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| 114 | { |
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| 115 | theActualWidth[i] = right.theActualWidth[i]; |
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| 116 | } |
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| 117 | theDaughterMass = 0; |
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| 118 | theDaughterWidth = 0; |
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| 119 | theStateToNucleus=right.theStateToNucleus; |
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| 120 | theProjectilePotential=right.theProjectilePotential; |
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| 121 | |
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| 122 | //////////////// |
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| 123 | // DEBUG // |
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| 124 | //////////////// |
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| 125 | |
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| 126 | /* |
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| 127 | G4cerr << G4endl << G4endl << G4endl; |
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| 128 | G4cerr << " G4KineticTrack copy constructor invoked! \n"; |
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| 129 | G4cerr << " ======================================== \n" <<G4endl; |
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| 130 | */ |
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| 131 | } |
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| 132 | |
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| 133 | |
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| 134 | // |
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| 135 | // By argument constructor |
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| 136 | // |
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| 137 | |
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| 138 | G4KineticTrack::G4KineticTrack(G4ParticleDefinition* aDefinition, |
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| 139 | G4double aFormationTime, |
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| 140 | G4ThreeVector aPosition, |
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| 141 | G4LorentzVector& a4Momentum) : |
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| 142 | theDefinition(aDefinition), |
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| 143 | theFormationTime(aFormationTime), |
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| 144 | thePosition(aPosition), |
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| 145 | the4Momentum(a4Momentum), |
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| 146 | theFermi3Momentum(0), |
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| 147 | theTotal4Momentum(a4Momentum), |
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| 148 | theNucleon(0), |
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| 149 | theStateToNucleus(undefined), |
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| 150 | theProjectilePotential(0) |
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| 151 | { |
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| 152 | if(G4KaonZero::KaonZero() == theDefinition || |
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| 153 | G4AntiKaonZero::AntiKaonZero() == theDefinition) |
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| 154 | { |
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| 155 | if(G4UniformRand()<0.5) |
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| 156 | { |
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| 157 | theDefinition = G4KaonZeroShort::KaonZeroShort(); |
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| 158 | } |
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| 159 | else |
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| 160 | { |
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| 161 | theDefinition = G4KaonZeroLong::KaonZeroLong(); |
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| 162 | } |
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| 163 | } |
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| 164 | |
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| 165 | // |
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| 166 | // Get the number of decay channels |
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| 167 | // |
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| 168 | |
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| 169 | G4DecayTable* theDecayTable = theDefinition->GetDecayTable(); |
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| 170 | if (theDecayTable != 0) |
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| 171 | { |
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| 172 | nChannels = theDecayTable->entries(); |
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| 173 | |
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| 174 | } |
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| 175 | else |
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| 176 | { |
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| 177 | nChannels = 0; |
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| 178 | } |
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| 179 | |
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| 180 | // |
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| 181 | // Get the actual mass value |
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| 182 | // |
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| 183 | |
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| 184 | theActualMass = GetActualMass(); |
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| 185 | |
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| 186 | // |
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| 187 | // Create an array to Store the actual partial widths |
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| 188 | // of the decay channels |
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| 189 | // |
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| 190 | |
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| 191 | theDaughterMass = 0; |
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| 192 | theDaughterWidth = 0; |
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| 193 | theActualWidth = 0; |
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| 194 | G4bool * theDaughterIsShortLived = 0; |
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| 195 | |
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| 196 | if(nChannels!=0) theActualWidth = new G4double[nChannels]; |
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| 197 | |
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| 198 | // cout << " ****CONSTR*** ActualMass ******* " << theActualMass << G4endl; |
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| 199 | G4int index; |
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| 200 | for (index = nChannels - 1; index >= 0; index--) |
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| 201 | { |
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| 202 | G4VDecayChannel* theChannel = theDecayTable->GetDecayChannel(index); |
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| 203 | G4int nDaughters = theChannel->GetNumberOfDaughters(); |
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| 204 | G4double theMotherWidth; |
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| 205 | if (nDaughters == 2 || nDaughters == 3) |
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| 206 | { |
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| 207 | G4double thePoleMass = theDefinition->GetPDGMass(); |
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| 208 | theMotherWidth = theDefinition->GetPDGWidth(); |
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| 209 | G4double thePoleWidth = theChannel->GetBR()*theMotherWidth; |
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| 210 | G4ParticleDefinition* aDaughter; |
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| 211 | theDaughterMass = new G4double[nDaughters]; |
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| 212 | theDaughterWidth = new G4double[nDaughters]; |
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| 213 | theDaughterIsShortLived = new G4bool[nDaughters]; |
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| 214 | G4int n; |
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| 215 | for (n = 0; n < nDaughters; n++) |
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| 216 | { |
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| 217 | aDaughter = theChannel->GetDaughter(n); |
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| 218 | theDaughterMass[n] = aDaughter->GetPDGMass(); |
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| 219 | theDaughterWidth[n] = aDaughter->GetPDGWidth(); |
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| 220 | theDaughterIsShortLived[n] = aDaughter->IsShortLived(); |
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| 221 | } |
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| 222 | |
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| 223 | // |
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| 224 | // Check whether both the decay products are stable |
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| 225 | // |
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| 226 | |
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| 227 | G4double theActualMom = 0.0; |
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| 228 | G4double thePoleMom = 0.0; |
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| 229 | G4SampleResonance aSampler; |
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| 230 | if (nDaughters==2) |
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| 231 | { |
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| 232 | if ( !theDaughterIsShortLived[0] && !theDaughterIsShortLived[1] ) |
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| 233 | { |
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| 234 | |
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| 235 | // G4cout << G4endl << "Both the " << nDaughters << |
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| 236 | // " decay products are stable!"; |
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| 237 | // cout << " LB: Both decay products STABLE !" << G4endl; |
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| 238 | // cout << " parent: " << theChannel->GetParentName() << G4endl; |
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| 239 | // cout << " particle1: " << theChannel->GetDaughterName(0) << G4endl; |
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| 240 | // cout << " particle2: " << theChannel->GetDaughterName(1) << G4endl; |
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| 241 | |
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| 242 | theActualMom = EvaluateCMMomentum(theActualMass, |
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| 243 | theDaughterMass); |
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| 244 | thePoleMom = EvaluateCMMomentum(thePoleMass, |
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| 245 | theDaughterMass); |
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| 246 | // cout << G4endl; |
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| 247 | // cout << " LB: ActualMass/DaughterMass " << theActualMass << " " << theDaughterMass << G4endl; |
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| 248 | // cout << " LB: ActualMom " << theActualMom << G4endl; |
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| 249 | // cout << " LB: PoleMom " << thePoleMom << G4endl; |
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| 250 | // cout << G4endl; |
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| 251 | } |
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| 252 | else if ( !theDaughterIsShortLived[0] && theDaughterIsShortLived[1] ) |
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| 253 | { |
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| 254 | |
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| 255 | // G4cout << G4endl << "Only the first of the " << nDaughters <<" decay products is stable!"; |
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| 256 | // cout << " LB: only the first decay product is STABLE !" << G4endl; |
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| 257 | // cout << " parent: " << theChannel->GetParentName() << G4endl; |
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| 258 | // cout << " particle1: " << theChannel->GetDaughterName(0) << G4endl; |
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| 259 | // cout << " particle2: " << theChannel->GetDaughterName(1) << G4endl; |
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| 260 | |
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| 261 | // global variable definition |
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| 262 | G4double lowerLimit = aSampler.GetMinimumMass(theChannel->GetDaughter(1)); |
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| 263 | theActualMom = IntegrateCMMomentum(lowerLimit); |
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| 264 | thePoleMom = IntegrateCMMomentum(lowerLimit, thePoleMass); |
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| 265 | // cout << " LB Parent Mass = " << G4KineticTrack_Gmass << G4endl; |
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| 266 | // cout << " LB Actual Mass = " << theActualMass << G4endl; |
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| 267 | // cout << " LB Daughter1 Mass = " << G4KineticTrack_Gmass1 << G4endl; |
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| 268 | // cout << " LB Daughter2 Mass = " << G4KineticTrack_Gmass2 << G4endl; |
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| 269 | // cout << " The Actual Momentum = " << theActualMom << G4endl; |
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| 270 | // cout << " The Pole Momentum = " << thePoleMom << G4endl; |
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| 271 | // cout << G4endl; |
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| 272 | |
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| 273 | } |
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| 274 | else if ( theDaughterIsShortLived[0] && !theDaughterIsShortLived[1] ) |
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| 275 | { |
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| 276 | |
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| 277 | // G4cout << G4endl << "Only the second of the " << nDaughters << |
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| 278 | // " decay products is stable!"; |
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| 279 | // cout << " LB: only the second decay product is STABLE !" << G4endl; |
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| 280 | // cout << " parent: " << theChannel->GetParentName() << G4endl; |
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| 281 | // cout << " particle1: " << theChannel->GetDaughterName(0) << G4endl; |
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| 282 | // cout << " particle2: " << theChannel->GetDaughterName(1) << G4endl; |
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| 283 | |
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| 284 | // |
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| 285 | // Swap the content of the theDaughterMass and theDaughterWidth arrays!!! |
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| 286 | // |
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| 287 | |
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| 288 | G4SwapObj(theDaughterMass, theDaughterMass + 1); |
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| 289 | G4SwapObj(theDaughterWidth, theDaughterWidth + 1); |
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| 290 | |
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| 291 | // global variable definition |
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| 292 | G4double lowerLimit = aSampler.GetMinimumMass(theChannel->GetDaughter(0)); |
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| 293 | theActualMom = IntegrateCMMomentum(lowerLimit); |
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| 294 | thePoleMom = IntegrateCMMomentum(lowerLimit, thePoleMass); |
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| 295 | // cout << " LB Parent Mass = " << G4KineticTrack_Gmass << G4endl; |
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| 296 | // cout << " LB Actual Mass = " << theActualMass << G4endl; |
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| 297 | // cout << " LB Daughter1 Mass = " << G4KineticTrack_Gmass1 << G4endl; |
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| 298 | // cout << " LB Daughter2 Mass = " << G4KineticTrack_Gmass2 << G4endl; |
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| 299 | // cout << " The Actual Momentum = " << theActualMom << G4endl; |
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| 300 | // cout << " The Pole Momentum = " << thePoleMom << G4endl; |
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| 301 | // cout << G4endl; |
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| 302 | |
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| 303 | } |
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| 304 | else if ( theDaughterIsShortLived[0] && theDaughterIsShortLived[1] ) |
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| 305 | { |
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| 306 | |
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| 307 | // G4cout << G4endl << "Both the " << nDaughters << |
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| 308 | // " decay products are resonances!"; |
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| 309 | // cout << " LB: both decay products are RESONANCES !" << G4endl; |
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| 310 | // cout << " parent: " << theChannel->GetParentName() << G4endl; |
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| 311 | // cout << " particle1: " << theChannel->GetDaughterName(0) << G4endl; |
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| 312 | // cout << " particle2: " << theChannel->GetDaughterName(1) << G4endl; |
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| 313 | |
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| 314 | // global variable definition |
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| 315 | G4KineticTrack_Gmass = theActualMass; |
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| 316 | theActualMom = IntegrateCMMomentum2(); |
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| 317 | G4KineticTrack_Gmass = thePoleMass; |
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| 318 | thePoleMom = IntegrateCMMomentum2(); |
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| 319 | // cout << " LB Parent Mass = " << G4KineticTrack_Gmass << G4endl; |
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| 320 | // cout << " LB Daughter1 Mass = " << G4KineticTrack_Gmass1 << G4endl; |
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| 321 | // cout << " LB Daughter2 Mass = " << G4KineticTrack_Gmass2 << G4endl; |
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| 322 | // cout << " The Actual Momentum = " << theActualMom << G4endl; |
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| 323 | // cout << " The Pole Momentum = " << thePoleMom << G4endl; |
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| 324 | // cout << G4endl; |
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| 325 | |
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| 326 | } |
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| 327 | } |
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| 328 | else // (nDaughter==3) |
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| 329 | { |
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| 330 | |
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| 331 | int nShortLived = 0; |
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| 332 | if ( theDaughterIsShortLived[0] ) |
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| 333 | { |
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| 334 | nShortLived++; |
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| 335 | } |
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| 336 | if ( theDaughterIsShortLived[1] ) |
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| 337 | { |
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| 338 | nShortLived++; |
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| 339 | G4SwapObj(theDaughterMass, theDaughterMass + 1); |
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| 340 | G4SwapObj(theDaughterWidth, theDaughterWidth + 1); |
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| 341 | } |
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| 342 | if ( theDaughterIsShortLived[2] ) |
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| 343 | { |
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| 344 | nShortLived++; |
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| 345 | G4SwapObj(theDaughterMass, theDaughterMass + 2); |
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| 346 | G4SwapObj(theDaughterWidth, theDaughterWidth + 2); |
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| 347 | } |
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| 348 | if ( nShortLived == 0 ) |
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| 349 | { |
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| 350 | theDaughterMass[1]+=theDaughterMass[2]; |
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| 351 | theActualMom = EvaluateCMMomentum(theActualMass, |
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| 352 | theDaughterMass); |
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| 353 | thePoleMom = EvaluateCMMomentum(thePoleMass, |
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| 354 | theDaughterMass); |
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| 355 | } |
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| 356 | // else if ( nShortLived == 1 ) |
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| 357 | else if ( nShortLived >= 1 ) |
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| 358 | { |
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| 359 | // need the shortlived particle in slot 1! (very bad style...) |
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| 360 | G4SwapObj(theDaughterMass, theDaughterMass + 1); |
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| 361 | G4SwapObj(theDaughterWidth, theDaughterWidth + 1); |
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| 362 | theDaughterMass[0] += theDaughterMass[2]; |
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| 363 | theActualMom = IntegrateCMMomentum(0.0); |
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| 364 | thePoleMom = IntegrateCMMomentum(0.0, thePoleMass); |
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| 365 | } |
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| 366 | // else |
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| 367 | // { |
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| 368 | // throw G4HadronicException(__FILE__, __LINE__, ("can't handle more than one shortlived in 3 particle output channel"); |
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| 369 | // } |
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| 370 | |
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| 371 | } |
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| 372 | |
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| 373 | G4double l=0; |
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| 374 | //if(nDaughters<3) theChannel->GetAngularMomentum(); |
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| 375 | G4double theMassRatio = thePoleMass / theActualMass; |
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| 376 | G4double theMomRatio = theActualMom / thePoleMom; |
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| 377 | theActualWidth[index] = thePoleWidth * theMassRatio * |
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| 378 | std::pow(theMomRatio, (2 * l + 1)) * |
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| 379 | (1.2 / (1+ 0.2*std::pow(theMomRatio, (2 * l)))); |
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| 380 | delete [] theDaughterMass; |
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| 381 | theDaughterMass = 0; |
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| 382 | delete [] theDaughterWidth; |
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| 383 | theDaughterWidth = 0; |
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| 384 | delete [] theDaughterIsShortLived; |
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| 385 | theDaughterIsShortLived = 0; |
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| 386 | } |
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| 387 | |
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| 388 | else // nDaughter = 1 ( e.g. K0 decays 50% to Kshort, 50% Klong |
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| 389 | { |
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| 390 | theMotherWidth = theDefinition->GetPDGWidth(); |
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| 391 | theActualWidth[index] = theChannel->GetBR()*theMotherWidth; |
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| 392 | } |
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| 393 | } |
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| 394 | |
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| 395 | //////////////// |
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| 396 | // DEBUG // |
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| 397 | //////////////// |
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| 398 | |
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| 399 | // for (G4int y = nChannels - 1; y >= 0; y--) |
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| 400 | // { |
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| 401 | // G4cout << G4endl << theActualWidth[y]; |
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| 402 | // } |
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| 403 | // G4cout << G4endl << G4endl << G4endl; |
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| 404 | |
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| 405 | /* |
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| 406 | G4cerr << G4endl << G4endl << G4endl; |
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| 407 | G4cerr << " G4KineticTrack by argument constructor invoked! \n"; |
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| 408 | G4cerr << " =============================================== \n" << G4endl; |
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| 409 | */ |
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| 410 | |
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| 411 | } |
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| 412 | |
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| 413 | G4KineticTrack::G4KineticTrack(G4Nucleon * nucleon, |
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| 414 | G4ThreeVector aPosition, |
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| 415 | G4LorentzVector& a4Momentum) |
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| 416 | : theDefinition(nucleon->GetDefinition()), |
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| 417 | theFormationTime(0), |
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| 418 | thePosition(aPosition), |
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| 419 | the4Momentum(a4Momentum), |
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| 420 | theFermi3Momentum(nucleon->GetMomentum()), |
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| 421 | theNucleon(nucleon), |
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| 422 | nChannels(0), |
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| 423 | theActualMass(nucleon->GetDefinition()->GetPDGMass()), |
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| 424 | theActualWidth(0), |
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| 425 | theDaughterMass(0), |
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| 426 | theDaughterWidth(0), |
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| 427 | theStateToNucleus(undefined), |
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| 428 | theProjectilePotential(0) |
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| 429 | { |
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| 430 | theFermi3Momentum.setE(0); |
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| 431 | Set4Momentum(a4Momentum); |
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| 432 | } |
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| 433 | |
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| 434 | |
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| 435 | G4KineticTrack::~G4KineticTrack() |
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| 436 | { |
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| 437 | if (theActualWidth != 0) delete [] theActualWidth; |
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| 438 | if (theDaughterMass != 0) delete [] theDaughterMass; |
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| 439 | if (theDaughterWidth != 0) delete [] theDaughterWidth; |
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| 440 | } |
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| 441 | |
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| 442 | |
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| 443 | |
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| 444 | const G4KineticTrack& G4KineticTrack::operator=(const G4KineticTrack& right) |
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| 445 | { |
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| 446 | G4int i; |
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| 447 | if (this != &right) |
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| 448 | { |
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| 449 | theDefinition = right.GetDefinition(); |
---|
| 450 | theFormationTime = right.GetFormationTime(); |
---|
| 451 | the4Momentum = right.the4Momentum; |
---|
| 452 | the4Momentum = right.GetTrackingMomentum(); |
---|
| 453 | theFermi3Momentum = right.theFermi3Momentum; |
---|
| 454 | theTotal4Momentum = right.theTotal4Momentum; |
---|
| 455 | theNucleon=right.theNucleon; |
---|
| 456 | theStateToNucleus=right.theStateToNucleus; |
---|
| 457 | if (theActualWidth != 0) delete [] theActualWidth; |
---|
| 458 | nChannels = right.GetnChannels(); |
---|
| 459 | theActualWidth = new G4double[nChannels]; |
---|
| 460 | for (i = 0; i < nChannels; i++) |
---|
| 461 | { |
---|
| 462 | theActualWidth[i] = right.theActualWidth[i]; |
---|
| 463 | } |
---|
| 464 | } |
---|
| 465 | return *this; |
---|
| 466 | } |
---|
| 467 | |
---|
| 468 | |
---|
| 469 | |
---|
| 470 | G4int G4KineticTrack::operator==(const G4KineticTrack& right) const |
---|
| 471 | { |
---|
| 472 | return (this == & right); |
---|
| 473 | } |
---|
| 474 | |
---|
| 475 | |
---|
| 476 | |
---|
| 477 | G4int G4KineticTrack::operator!=(const G4KineticTrack& right) const |
---|
| 478 | { |
---|
| 479 | return (this != & right); |
---|
| 480 | } |
---|
| 481 | |
---|
| 482 | |
---|
| 483 | |
---|
| 484 | G4KineticTrackVector* G4KineticTrack::Decay() |
---|
| 485 | { |
---|
| 486 | // |
---|
| 487 | // Select a possible decay channel |
---|
| 488 | // |
---|
| 489 | // G4int index1; |
---|
| 490 | // for (index1 = nChannels - 1; index1 >= 0; index1--) |
---|
| 491 | // cout << "DECAY Actual Width IND/ActualW " << index1 << " " << theActualWidth[index1] << G4endl; |
---|
| 492 | // cout << "DECAY Actual Mass " << theActualMass << G4endl; |
---|
| 493 | |
---|
| 494 | G4int chargeBalance = G4lrint(theDefinition->GetPDGCharge() ); |
---|
| 495 | G4int baryonBalance = G4lrint(theDefinition->GetBaryonNumber() ); |
---|
| 496 | G4LorentzVector energyMomentumBalance(Get4Momentum()); |
---|
| 497 | G4double theTotalActualWidth = this->EvaluateTotalActualWidth(); |
---|
| 498 | if (theTotalActualWidth !=0) |
---|
| 499 | { |
---|
| 500 | G4int index; |
---|
| 501 | G4double theSumActualWidth = 0.0; |
---|
| 502 | G4double* theCumActualWidth = new G4double[nChannels]; |
---|
| 503 | for (index = nChannels - 1; index >= 0; index--) |
---|
| 504 | { |
---|
| 505 | theSumActualWidth += theActualWidth[index]; |
---|
| 506 | theCumActualWidth[index] = theSumActualWidth; |
---|
| 507 | // cout << "DECAY Cum. Width " << index << " " << theCumActualWidth[index] << G4endl; |
---|
| 508 | } |
---|
| 509 | // cout << "DECAY Total Width " << theSumActualWidth << G4endl; |
---|
| 510 | // cout << "DECAY Total Width " << theTotalActualWidth << G4endl; |
---|
| 511 | G4double r = theTotalActualWidth * G4UniformRand(); |
---|
| 512 | G4ParticleDefinition* thisDefinition = this->GetDefinition(); |
---|
| 513 | if(!thisDefinition) |
---|
| 514 | { |
---|
| 515 | G4cerr << "Error condition encountered in G4KineticTrack::Decay()"<<G4endl; |
---|
| 516 | G4cerr << " track has no particle definition associated."<<G4endl; |
---|
| 517 | return 0; |
---|
| 518 | } |
---|
| 519 | G4DecayTable* theDecayTable = thisDefinition->GetDecayTable(); |
---|
| 520 | if(!theDecayTable) |
---|
| 521 | { |
---|
| 522 | G4cerr << "Error condition encountered in G4KineticTrack::Decay()"<<G4endl; |
---|
| 523 | G4cerr << " particle definiton has no decay table associated."<<G4endl; |
---|
| 524 | G4cerr << " particle was "<<thisDefinition->GetParticleName()<<G4endl; |
---|
| 525 | return 0; |
---|
| 526 | } |
---|
| 527 | G4VDecayChannel* theDecayChannel=NULL; |
---|
| 528 | for (index = nChannels - 1; index >= 0; index--) |
---|
| 529 | { |
---|
| 530 | if (r < theCumActualWidth[index]) |
---|
| 531 | { |
---|
| 532 | theDecayChannel = theDecayTable->GetDecayChannel(index); |
---|
| 533 | // cout << "DECAY SELECTED CHANNEL" << index << G4endl; |
---|
| 534 | chosench=index; |
---|
| 535 | break; |
---|
| 536 | } |
---|
| 537 | } |
---|
| 538 | |
---|
| 539 | if(!theDecayChannel) |
---|
| 540 | { |
---|
| 541 | G4cerr << "Error condition encountered in G4KineticTrack::Decay()"<<G4endl; |
---|
| 542 | G4cerr << " decay channel has 0x0 channel associated."<<G4endl; |
---|
| 543 | G4cerr << " particle was "<<thisDefinition->GetParticleName()<<G4endl; |
---|
| 544 | G4cerr << " channel index "<< chosench << "of "<<nChannels<<"channels"<<G4endl; |
---|
| 545 | return 0; |
---|
| 546 | } |
---|
| 547 | G4String theParentName = theDecayChannel->GetParentName(); |
---|
| 548 | G4double theParentMass = this->GetActualMass(); |
---|
| 549 | G4double theBR = theActualWidth[index]; |
---|
| 550 | // cout << "**BR*** DECAYNEW " << theBR << G4endl; |
---|
| 551 | G4int theNumberOfDaughters = theDecayChannel->GetNumberOfDaughters(); |
---|
| 552 | G4String theDaughtersName1 = ""; |
---|
| 553 | G4String theDaughtersName2 = ""; |
---|
| 554 | G4String theDaughtersName3 = ""; |
---|
| 555 | |
---|
| 556 | G4double masses[3]={0.,0.,0.}; |
---|
| 557 | G4int shortlivedDaughters[3]; |
---|
| 558 | G4int numberOfShortliveds(0); |
---|
| 559 | G4double SumLongLivedMass(0); |
---|
| 560 | for (G4int aD=0; aD < theNumberOfDaughters ; aD++) |
---|
| 561 | { |
---|
| 562 | G4ParticleDefinition* aDaughter = theDecayChannel->GetDaughter(aD); |
---|
| 563 | masses[aD] = aDaughter->GetPDGMass(); |
---|
| 564 | if ( aDaughter->IsShortLived() ) |
---|
| 565 | { |
---|
| 566 | shortlivedDaughters[numberOfShortliveds]=aD; |
---|
| 567 | numberOfShortliveds++; |
---|
| 568 | } else { |
---|
| 569 | SumLongLivedMass += aDaughter->GetPDGMass(); |
---|
| 570 | } |
---|
| 571 | |
---|
| 572 | } |
---|
| 573 | switch (theNumberOfDaughters) |
---|
| 574 | { |
---|
| 575 | case 0: |
---|
| 576 | break; |
---|
| 577 | case 1: |
---|
| 578 | theDaughtersName1 = theDecayChannel->GetDaughterName(0); |
---|
| 579 | theDaughtersName2 = ""; |
---|
| 580 | theDaughtersName3 = ""; |
---|
| 581 | break; |
---|
| 582 | case 2: |
---|
| 583 | theDaughtersName1 = theDecayChannel->GetDaughterName(0); |
---|
| 584 | theDaughtersName2 = theDecayChannel->GetDaughterName(1); |
---|
| 585 | theDaughtersName3 = ""; |
---|
| 586 | if ( numberOfShortliveds == 1) |
---|
| 587 | { G4SampleResonance aSampler; |
---|
| 588 | G4double massmax=theParentMass - SumLongLivedMass; |
---|
| 589 | G4ParticleDefinition * aDaughter=theDecayChannel->GetDaughter(shortlivedDaughters[0]); |
---|
| 590 | masses[shortlivedDaughters[0]]= aSampler.SampleMass(aDaughter,massmax); |
---|
| 591 | } else if ( numberOfShortliveds == 2) { |
---|
| 592 | // choose masses one after the other, start with randomly choosen |
---|
| 593 | G4int zero= (G4UniformRand() > 0.5) ? 0 : 1; |
---|
| 594 | G4int one = 1-zero; |
---|
| 595 | G4SampleResonance aSampler; |
---|
| 596 | G4double massmax=theParentMass - aSampler.GetMinimumMass(theDecayChannel->GetDaughter(shortlivedDaughters[one])); |
---|
| 597 | G4ParticleDefinition * aDaughter=theDecayChannel->GetDaughter(shortlivedDaughters[zero]); |
---|
| 598 | masses[shortlivedDaughters[zero]]=aSampler.SampleMass(aDaughter,massmax); |
---|
| 599 | massmax=theParentMass - masses[shortlivedDaughters[zero]]; |
---|
| 600 | aDaughter=theDecayChannel->GetDaughter(shortlivedDaughters[one]); |
---|
| 601 | masses[shortlivedDaughters[one]]=aSampler.SampleMass(aDaughter,massmax); |
---|
| 602 | } |
---|
| 603 | break; |
---|
| 604 | default: |
---|
| 605 | theDaughtersName1 = theDecayChannel->GetDaughterName(0); |
---|
| 606 | theDaughtersName2 = theDecayChannel->GetDaughterName(1); |
---|
| 607 | theDaughtersName3 = theDecayChannel->GetDaughterName(2); |
---|
| 608 | if ( numberOfShortliveds == 1) |
---|
| 609 | { G4SampleResonance aSampler; |
---|
| 610 | G4double massmax=theParentMass - SumLongLivedMass; |
---|
| 611 | G4ParticleDefinition * aDaughter=theDecayChannel->GetDaughter(shortlivedDaughters[0]); |
---|
| 612 | masses[shortlivedDaughters[0]]= aSampler.SampleMass(aDaughter,massmax); |
---|
| 613 | } |
---|
| 614 | break; |
---|
| 615 | } |
---|
| 616 | |
---|
| 617 | // |
---|
| 618 | // Get the decay products List |
---|
| 619 | // |
---|
| 620 | |
---|
| 621 | G4GeneralPhaseSpaceDecay thePhaseSpaceDecayChannel(theParentName, |
---|
| 622 | theParentMass, |
---|
| 623 | theBR, |
---|
| 624 | theNumberOfDaughters, |
---|
| 625 | theDaughtersName1, |
---|
| 626 | theDaughtersName2, |
---|
| 627 | theDaughtersName3, |
---|
| 628 | masses); |
---|
| 629 | G4DecayProducts* theDecayProducts = thePhaseSpaceDecayChannel.DecayIt(); |
---|
| 630 | if(!theDecayProducts) |
---|
| 631 | { |
---|
| 632 | G4cerr << "Error condition encountered in G4KineticTrack::Decay()"<<G4endl; |
---|
| 633 | G4cerr << " phase-space decay failed."<<G4endl; |
---|
| 634 | G4cerr << " particle was "<<thisDefinition->GetParticleName()<<G4endl; |
---|
| 635 | G4cerr << " channel index "<< chosench << "of "<<nChannels<<"channels"<<G4endl; |
---|
| 636 | G4cerr << " "<<theNumberOfDaughters<< " Daughter particles: " |
---|
| 637 | << theDaughtersName1<<" "<<theDaughtersName2<<" "<<theDaughtersName3<<G4endl; |
---|
| 638 | return 0; |
---|
| 639 | } |
---|
| 640 | |
---|
| 641 | // |
---|
| 642 | // Create the kinetic track List associated to the decay products |
---|
| 643 | // |
---|
| 644 | G4LorentzRotation toMoving(Get4Momentum().boostVector()); |
---|
| 645 | G4DynamicParticle* theDynamicParticle; |
---|
| 646 | G4double formationTime = 0.0; |
---|
| 647 | G4ThreeVector position = this->GetPosition(); |
---|
| 648 | G4LorentzVector momentum; |
---|
| 649 | G4LorentzVector momentumBalanceCMS(0); |
---|
| 650 | G4KineticTrackVector* theDecayProductList = new G4KineticTrackVector; |
---|
| 651 | G4int dEntries = theDecayProducts->entries(); |
---|
| 652 | G4ParticleDefinition * aProduct = 0; |
---|
| 653 | for (G4int i=dEntries; i > 0; i--) |
---|
| 654 | { |
---|
| 655 | theDynamicParticle = theDecayProducts->PopProducts(); |
---|
| 656 | aProduct = theDynamicParticle->GetDefinition(); |
---|
| 657 | chargeBalance -= G4lrint(aProduct->GetPDGCharge() ); |
---|
| 658 | baryonBalance -= G4lrint(aProduct->GetBaryonNumber() ); |
---|
| 659 | momentumBalanceCMS += theDynamicParticle->Get4Momentum(); |
---|
| 660 | momentum = toMoving*theDynamicParticle->Get4Momentum(); |
---|
| 661 | energyMomentumBalance -= momentum; |
---|
| 662 | theDecayProductList->push_back(new G4KineticTrack (aProduct, |
---|
| 663 | formationTime, |
---|
| 664 | position, |
---|
| 665 | momentum)); |
---|
| 666 | delete theDynamicParticle; |
---|
| 667 | } |
---|
| 668 | delete theDecayProducts; |
---|
| 669 | delete [] theCumActualWidth; |
---|
| 670 | if(getenv("DecayEnergyBalanceCheck")) |
---|
| 671 | std::cout << "DEBUGGING energy balance in cms and lab, charge baryon balance : " |
---|
| 672 | << momentumBalanceCMS << " " |
---|
| 673 | <<energyMomentumBalance << " " |
---|
| 674 | <<chargeBalance<<" " |
---|
| 675 | <<baryonBalance<<" " |
---|
| 676 | <<G4endl; |
---|
| 677 | return theDecayProductList; |
---|
| 678 | } |
---|
| 679 | else |
---|
| 680 | { |
---|
| 681 | return 0; |
---|
| 682 | } |
---|
| 683 | } |
---|
| 684 | |
---|
| 685 | G4double G4KineticTrack::IntegrandFunction1(G4double xmass) const |
---|
| 686 | { |
---|
| 687 | G4double mass = theActualMass; /* the actual mass value */ |
---|
| 688 | G4double mass1 = theDaughterMass[0]; |
---|
| 689 | G4double mass2 = theDaughterMass[1]; |
---|
| 690 | G4double gamma2 = theDaughterWidth[1]; |
---|
| 691 | |
---|
| 692 | G4double result = (1. / (2 * mass)) * |
---|
| 693 | std::sqrt(std::max((((mass * mass) - (mass1 + xmass) * (mass1 + xmass)) * |
---|
| 694 | ((mass * mass) - (mass1 - xmass) * (mass1 - xmass))),0.0)) * |
---|
| 695 | BrWig(gamma2, mass2, xmass); |
---|
| 696 | return result; |
---|
| 697 | } |
---|
| 698 | |
---|
| 699 | G4double G4KineticTrack::IntegrandFunction2(G4double xmass) const |
---|
| 700 | { |
---|
| 701 | G4double mass = theDefinition->GetPDGMass(); /* the pole mass value */ |
---|
| 702 | G4double mass1 = theDaughterMass[0]; |
---|
| 703 | G4double mass2 = theDaughterMass[1]; |
---|
| 704 | G4double gamma2 = theDaughterWidth[1]; |
---|
| 705 | G4double result = (1. / (2 * mass)) * |
---|
| 706 | std::sqrt(std::max((((mass * mass) - (mass1 + xmass) * (mass1 + xmass)) * |
---|
| 707 | ((mass * mass) - (mass1 - xmass) * (mass1 - xmass))),0.0)) * |
---|
| 708 | BrWig(gamma2, mass2, xmass); |
---|
| 709 | return result; |
---|
| 710 | } |
---|
| 711 | |
---|
| 712 | G4double G4KineticTrack::IntegrandFunction3(G4double xmass) const |
---|
| 713 | { |
---|
| 714 | const G4double mass = G4KineticTrack_Gmass; /* the actual mass value */ |
---|
| 715 | // const G4double mass1 = theDaughterMass[0]; |
---|
| 716 | const G4double mass2 = theDaughterMass[1]; |
---|
| 717 | const G4double gamma2 = theDaughterWidth[1]; |
---|
| 718 | |
---|
| 719 | const G4double result = (1. / (2 * mass)) * |
---|
| 720 | std::sqrt(((mass * mass) - (G4KineticTrack_xmass1 + xmass) * (G4KineticTrack_xmass1 + xmass)) * |
---|
| 721 | ((mass * mass) - (G4KineticTrack_xmass1 - xmass) * (G4KineticTrack_xmass1 - xmass))) * |
---|
| 722 | BrWig(gamma2, mass2, xmass); |
---|
| 723 | return result; |
---|
| 724 | } |
---|
| 725 | |
---|
| 726 | G4double G4KineticTrack::IntegrandFunction4(G4double xmass) const |
---|
| 727 | { |
---|
| 728 | const G4double mass = G4KineticTrack_Gmass; |
---|
| 729 | const G4double mass1 = theDaughterMass[0]; |
---|
| 730 | const G4double gamma1 = theDaughterWidth[0]; |
---|
| 731 | // const G4double mass2 = theDaughterMass[1]; |
---|
| 732 | |
---|
| 733 | G4KineticTrack_xmass1 = xmass; |
---|
| 734 | |
---|
| 735 | const G4double theLowerLimit = 0.0; |
---|
| 736 | const G4double theUpperLimit = mass - xmass; |
---|
| 737 | const G4int nIterations = 100; |
---|
| 738 | |
---|
| 739 | G4Integrator<const G4KineticTrack, G4double(G4KineticTrack::*)(G4double) const> integral; |
---|
| 740 | G4double result = BrWig(gamma1, mass1, xmass)* |
---|
| 741 | integral.Simpson(this, &G4KineticTrack::IntegrandFunction3, theLowerLimit, theUpperLimit, nIterations); |
---|
| 742 | |
---|
| 743 | return result; |
---|
| 744 | } |
---|
| 745 | |
---|
| 746 | G4double G4KineticTrack::IntegrateCMMomentum(const G4double theLowerLimit) const |
---|
| 747 | { |
---|
| 748 | const G4double theUpperLimit = theActualMass - theDaughterMass[0]; |
---|
| 749 | const G4int nIterations = 100; |
---|
| 750 | |
---|
| 751 | if (theLowerLimit>=theUpperLimit) return 0.0; |
---|
| 752 | |
---|
| 753 | G4Integrator<const G4KineticTrack, G4double(G4KineticTrack::*)(G4double) const> integral; |
---|
| 754 | G4double theIntegralOverMass2 = integral.Simpson(this, &G4KineticTrack::IntegrandFunction1, |
---|
| 755 | theLowerLimit, theUpperLimit, nIterations); |
---|
| 756 | return theIntegralOverMass2; |
---|
| 757 | } |
---|
| 758 | |
---|
| 759 | G4double G4KineticTrack::IntegrateCMMomentum(const G4double theLowerLimit, const G4double poleMass) const |
---|
| 760 | { |
---|
| 761 | const G4double theUpperLimit = poleMass - theDaughterMass[0]; |
---|
| 762 | const G4int nIterations = 100; |
---|
| 763 | |
---|
| 764 | if (theLowerLimit>=theUpperLimit) return 0.0; |
---|
| 765 | |
---|
| 766 | G4Integrator<const G4KineticTrack, G4double(G4KineticTrack::*)(G4double) const> integral; |
---|
| 767 | const G4double theIntegralOverMass2 = integral.Simpson(this, &G4KineticTrack::IntegrandFunction2, |
---|
| 768 | theLowerLimit, theUpperLimit, nIterations); |
---|
| 769 | return theIntegralOverMass2; |
---|
| 770 | } |
---|
| 771 | |
---|
| 772 | |
---|
| 773 | G4double G4KineticTrack::IntegrateCMMomentum2() const |
---|
| 774 | { |
---|
| 775 | const G4double theLowerLimit = 0.0; |
---|
| 776 | const G4double theUpperLimit = theActualMass; |
---|
| 777 | const G4int nIterations = 100; |
---|
| 778 | |
---|
| 779 | if (theLowerLimit>=theUpperLimit) return 0.0; |
---|
| 780 | |
---|
| 781 | G4Integrator<const G4KineticTrack, G4double(G4KineticTrack::*)(G4double) const> integral; |
---|
| 782 | G4double theIntegralOverMass2 = integral.Simpson(this, &G4KineticTrack::IntegrandFunction4, |
---|
| 783 | theLowerLimit, theUpperLimit, nIterations); |
---|
| 784 | return theIntegralOverMass2; |
---|
| 785 | } |
---|
| 786 | |
---|
| 787 | |
---|
| 788 | |
---|
| 789 | |
---|
| 790 | |
---|
| 791 | |
---|
| 792 | |
---|
| 793 | |
---|