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 | // 14.03.07 V. Grichine - first implementation |
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27 | // |
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28 | |
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29 | #include "G4HadronNucleonXsc.hh" |
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30 | |
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31 | #include "G4ParticleTable.hh" |
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32 | #include "G4IonTable.hh" |
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33 | #include "G4ParticleDefinition.hh" |
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34 | #include "G4HadTmpUtil.hh" |
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35 | |
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36 | |
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37 | G4HadronNucleonXsc::G4HadronNucleonXsc() |
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38 | : fUpperLimit( 10000 * GeV ), |
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39 | fLowerLimit( 0.03 * MeV ), |
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40 | fTotalXsc(0.0), fElasticXsc(0.0), fInelasticXsc(0.0), fHadronNucleonXsc(0.0) |
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41 | { |
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42 | theGamma = G4Gamma::Gamma(); |
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43 | theProton = G4Proton::Proton(); |
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44 | theNeutron = G4Neutron::Neutron(); |
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45 | theAProton = G4AntiProton::AntiProton(); |
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46 | theANeutron = G4AntiNeutron::AntiNeutron(); |
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47 | thePiPlus = G4PionPlus::PionPlus(); |
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48 | thePiMinus = G4PionMinus::PionMinus(); |
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49 | thePiZero = G4PionZero::PionZero(); |
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50 | theKPlus = G4KaonPlus::KaonPlus(); |
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51 | theKMinus = G4KaonMinus::KaonMinus(); |
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52 | theK0S = G4KaonZeroShort::KaonZeroShort(); |
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53 | theK0L = G4KaonZeroLong::KaonZeroLong(); |
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54 | theL = G4Lambda::Lambda(); |
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55 | theAntiL = G4AntiLambda::AntiLambda(); |
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56 | theSPlus = G4SigmaPlus::SigmaPlus(); |
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57 | theASPlus = G4AntiSigmaPlus::AntiSigmaPlus(); |
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58 | theSMinus = G4SigmaMinus::SigmaMinus(); |
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59 | theASMinus = G4AntiSigmaMinus::AntiSigmaMinus(); |
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60 | theS0 = G4SigmaZero::SigmaZero(); |
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61 | theAS0 = G4AntiSigmaZero::AntiSigmaZero(); |
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62 | theXiMinus = G4XiMinus::XiMinus(); |
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63 | theXi0 = G4XiZero::XiZero(); |
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64 | theAXiMinus = G4AntiXiMinus::AntiXiMinus(); |
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65 | theAXi0 = G4AntiXiZero::AntiXiZero(); |
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66 | theOmega = G4OmegaMinus::OmegaMinus(); |
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67 | theAOmega = G4AntiOmegaMinus::AntiOmegaMinus(); |
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68 | theD = G4Deuteron::Deuteron(); |
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69 | theT = G4Triton::Triton(); |
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70 | theA = G4Alpha::Alpha(); |
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71 | theHe3 = G4He3::He3(); |
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72 | } |
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73 | |
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74 | |
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75 | G4HadronNucleonXsc::~G4HadronNucleonXsc() |
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76 | {} |
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77 | |
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78 | |
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79 | G4bool |
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80 | G4HadronNucleonXsc::IsApplicable(const G4DynamicParticle* aDP, |
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81 | const G4Element* anElement) |
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82 | { |
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83 | G4int Z = G4lrint(anElement->GetZ()); |
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84 | G4int A = G4lrint(anElement->GetN()); |
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85 | return IsIsoApplicable(aDP, Z, A); |
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86 | } |
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87 | |
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88 | //////////////////////////////////////////////////////////////////////////////////////// |
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89 | // |
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90 | |
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91 | G4bool |
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92 | G4HadronNucleonXsc::IsIsoApplicable(const G4DynamicParticle* aDP, |
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93 | G4int Z, G4int) |
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94 | { |
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95 | G4bool applicable = false; |
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96 | // G4int baryonNumber = aDP->GetDefinition()->GetBaryonNumber(); |
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97 | G4double kineticEnergy = aDP->GetKineticEnergy(); |
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98 | |
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99 | const G4ParticleDefinition* theParticle = aDP->GetDefinition(); |
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100 | |
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101 | if ( ( kineticEnergy >= fLowerLimit && |
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102 | Z > 1 && // >= He |
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103 | ( theParticle == theAProton || |
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104 | theParticle == theGamma || |
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105 | theParticle == theKPlus || |
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106 | theParticle == theKMinus || |
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107 | theParticle == theSMinus) ) || |
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108 | |
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109 | ( kineticEnergy >= 0.1*fLowerLimit && |
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110 | Z > 1 && // >= He |
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111 | ( theParticle == theProton || |
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112 | theParticle == theNeutron || |
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113 | theParticle == thePiPlus || |
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114 | theParticle == thePiMinus ) ) ) applicable = true; |
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115 | |
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116 | return applicable; |
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117 | } |
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118 | |
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119 | |
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120 | ///////////////////////////////////////////////////////////////////////////////////// |
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121 | // |
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122 | // Returns hadron-nucleon Xsc according to differnt parametrisations: |
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123 | // [2] E. Levin, hep-ph/9710546 |
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124 | // [3] U. Dersch, et al, hep-ex/9910052 |
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125 | // [4] M.J. Longo, et al, Phys.Rev.Lett. 33 (1974) 725 |
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126 | |
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127 | G4double |
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128 | G4HadronNucleonXsc::GetHadronNucleonXscEL(const G4DynamicParticle* aParticle, |
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129 | const G4ParticleDefinition* nucleon ) |
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130 | { |
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131 | G4double xsection; |
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132 | |
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133 | |
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134 | G4double targ_mass = 0.939*GeV; // ~mean neutron and proton ??? |
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135 | |
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136 | G4double proj_mass = aParticle->GetMass(); |
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137 | G4double proj_momentum = aParticle->GetMomentum().mag(); |
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138 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum ); |
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139 | |
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140 | sMand /= GeV*GeV; // in GeV for parametrisation |
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141 | proj_momentum /= GeV; |
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142 | |
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143 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition(); |
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144 | |
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145 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
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146 | |
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147 | |
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148 | if(theParticle == theGamma && pORn ) |
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149 | { |
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150 | xsection = (0.0677*std::pow(sMand,0.0808) + 0.129*std::pow(sMand,-0.4525)); |
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151 | } |
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152 | else if(theParticle == theNeutron && pORn ) // as proton ??? |
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153 | { |
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154 | xsection = (21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525)); |
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155 | } |
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156 | else if(theParticle == theProton && pORn ) |
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157 | { |
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158 | xsection = (21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525)); |
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159 | |
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160 | // xsection = At*( 49.51*std::pow(sMand,-0.097) + 0.314*std::log(sMand)*std::log(sMand) ); |
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161 | // xsection = At*( 38.4 + 0.85*std::abs(std::pow(log(sMand),1.47)) ); |
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162 | } |
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163 | else if(theParticle == theAProton && pORn ) |
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164 | { |
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165 | xsection = ( 21.70*std::pow(sMand,0.0808) + 98.39*std::pow(sMand,-0.4525)); |
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166 | } |
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167 | else if(theParticle == thePiPlus && pORn ) |
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168 | { |
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169 | xsection = (13.63*std::pow(sMand,0.0808) + 27.56*std::pow(sMand,-0.4525)); |
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170 | } |
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171 | else if(theParticle == thePiMinus && pORn ) |
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172 | { |
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173 | // xsection = At*( 55.2*std::pow(sMand,-0.255) + 0.346*std::log(sMand)*std::log(sMand) ); |
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174 | xsection = (13.63*std::pow(sMand,0.0808) + 36.02*std::pow(sMand,-0.4525)); |
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175 | } |
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176 | else if(theParticle == theKPlus && pORn ) |
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177 | { |
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178 | xsection = (11.82*std::pow(sMand,0.0808) + 8.15*std::pow(sMand,-0.4525)); |
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179 | } |
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180 | else if(theParticle == theKMinus && pORn ) |
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181 | { |
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182 | xsection = (11.82*std::pow(sMand,0.0808) + 26.36*std::pow(sMand,-0.4525)); |
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183 | } |
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184 | else // as proton ??? |
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185 | { |
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186 | xsection = (21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525)); |
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187 | } |
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188 | xsection *= millibarn; |
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189 | |
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190 | fTotalXsc = xsection; |
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191 | fInelasticXsc = 0.83*xsection; |
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192 | fElasticXsc = fTotalXsc - fInelasticXsc; |
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193 | if (fElasticXsc < 0.)fElasticXsc = 0.; |
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194 | |
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195 | return xsection; |
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196 | } |
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197 | |
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198 | |
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199 | ///////////////////////////////////////////////////////////////////////////////////// |
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200 | // |
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201 | // Returns hadron-nucleon Xsc according to PDG parametrisation (2005): |
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202 | // http://pdg.lbl.gov/2006/reviews/hadronicrpp.pdf |
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203 | // At = number of nucleons, Zt = number of protons |
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204 | |
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205 | G4double |
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206 | G4HadronNucleonXsc::GetHadronNucleonXscPDG(const G4DynamicParticle* aParticle, |
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207 | const G4ParticleDefinition* nucleon ) |
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208 | { |
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209 | G4double xsection(0); |
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210 | G4int Zt=1, Nt=1, At=1; |
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211 | |
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212 | G4double targ_mass = 0.939*GeV; // ~mean neutron and proton ??? |
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213 | |
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214 | G4double proj_mass = aParticle->GetMass(); |
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215 | G4double proj_momentum = aParticle->GetMomentum().mag(); |
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216 | |
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217 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum ); |
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218 | |
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219 | sMand /= GeV*GeV; // in GeV for parametrisation |
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220 | |
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221 | // General PDG fit constants |
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222 | |
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223 | G4double s0 = 5.38*5.38; // in Gev^2 |
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224 | G4double eta1 = 0.458; |
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225 | G4double eta2 = 0.458; |
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226 | G4double B = 0.308; |
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227 | |
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228 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition(); |
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229 | |
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230 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
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231 | G4bool proton = (nucleon == theProton); |
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232 | G4bool neutron = (nucleon == theNeutron); |
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233 | |
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234 | if(theParticle == theNeutron) // proton-neutron fit |
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235 | { |
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236 | if ( proton ) |
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237 | { |
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238 | xsection = Zt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
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239 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2));// on p |
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240 | } |
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241 | if ( neutron ) |
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242 | { |
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243 | xsection = Nt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
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244 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2)); // on n pp for nn |
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245 | } |
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246 | } |
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247 | else if(theParticle == theProton) |
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248 | { |
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249 | if ( proton ) |
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250 | { |
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251 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
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252 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2)); |
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253 | } |
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254 | if ( neutron ) |
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255 | { |
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256 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
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257 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2)); |
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258 | } |
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259 | } |
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260 | else if(theParticle == theAProton) |
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261 | { |
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262 | if ( proton ) |
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263 | { |
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264 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
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265 | + 42.53*std::pow(sMand,-eta1) + 33.34*std::pow(sMand,-eta2)); |
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266 | } |
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267 | if ( neutron ) |
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268 | { |
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269 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
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270 | + 40.15*std::pow(sMand,-eta1) + 30.*std::pow(sMand,-eta2)); |
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271 | } |
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272 | } |
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273 | else if(theParticle == thePiPlus && pORn ) |
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274 | { |
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275 | xsection = At*( 20.86 + B*std::pow(std::log(sMand/s0),2.) |
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276 | + 19.24*std::pow(sMand,-eta1) - 6.03*std::pow(sMand,-eta2)); |
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277 | } |
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278 | else if(theParticle == thePiMinus && pORn ) |
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279 | { |
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280 | xsection = At*( 20.86 + B*std::pow(std::log(sMand/s0),2.) |
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281 | + 19.24*std::pow(sMand,-eta1) + 6.03*std::pow(sMand,-eta2)); |
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282 | } |
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283 | else if(theParticle == theKPlus) |
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284 | { |
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285 | if ( proton ) |
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286 | { |
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287 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
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288 | + 7.14*std::pow(sMand,-eta1) - 13.45*std::pow(sMand,-eta2)); |
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289 | } |
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290 | if ( neutron ) |
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291 | { |
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292 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
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293 | + 5.17*std::pow(sMand,-eta1) - 7.23*std::pow(sMand,-eta2)); |
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294 | } |
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295 | } |
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296 | else if(theParticle == theKMinus) |
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297 | { |
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298 | if ( proton ) |
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299 | { |
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300 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
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301 | + 7.14*std::pow(sMand,-eta1) + 13.45*std::pow(sMand,-eta2)); |
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302 | } |
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303 | if ( neutron ) |
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304 | { |
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305 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
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306 | + 5.17*std::pow(sMand,-eta1) + 7.23*std::pow(sMand,-eta2) ); |
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307 | } |
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308 | } |
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309 | else if(theParticle == theSMinus && pORn ) |
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310 | { |
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311 | xsection = At*( 35.20 + B*std::pow(std::log(sMand/s0),2.) |
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312 | - 199.*std::pow(sMand,-eta1) + 264.*std::pow(sMand,-eta2) ); |
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313 | } |
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314 | else if(theParticle == theGamma && pORn ) // modify later on |
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315 | { |
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316 | xsection = At*( 0.0 + B*std::pow(std::log(sMand/s0),2.) |
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317 | + 0.032*std::pow(sMand,-eta1) - 0.0*std::pow(sMand,-eta2) ); |
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318 | |
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319 | } |
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320 | else // as proton ??? |
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321 | { |
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322 | if ( proton ) |
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323 | { |
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324 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
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325 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2) ); |
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326 | } |
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327 | if ( neutron ) |
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328 | { |
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329 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
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330 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2)); |
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331 | } |
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332 | } |
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333 | xsection *= millibarn; // parametrised in mb |
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334 | |
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335 | fTotalXsc = xsection; |
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336 | fInelasticXsc = 0.83*xsection; |
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337 | fElasticXsc = fTotalXsc - fInelasticXsc; |
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338 | if (fElasticXsc < 0.)fElasticXsc = 0.; |
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339 | |
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340 | return xsection; |
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341 | } |
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342 | |
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343 | |
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344 | ///////////////////////////////////////////////////////////////////////////////////// |
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345 | // |
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346 | // Returns hadron-nucleon cross-section based on N. Starkov parametrisation of |
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347 | // data from mainly http://wwwppds.ihep.su:8001/c5-6A.html database |
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348 | |
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349 | G4double |
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350 | G4HadronNucleonXsc::GetHadronNucleonXscNS(const G4DynamicParticle* aParticle, |
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351 | const G4ParticleDefinition* nucleon ) |
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352 | { |
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353 | G4double xsection(0), Delta, A0, B0; |
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354 | G4int Zt=1, Nt=1, At=1; |
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355 | G4double hpXsc(0); |
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356 | G4double hnXsc(0); |
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357 | |
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358 | |
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359 | G4double targ_mass = 0.939*GeV; // ~mean neutron and proton ??? |
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360 | |
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361 | G4double proj_mass = aParticle->GetMass(); |
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362 | G4double proj_energy = aParticle->GetTotalEnergy(); |
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363 | G4double proj_momentum = aParticle->GetMomentum().mag(); |
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364 | |
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365 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum ); |
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366 | |
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367 | sMand /= GeV*GeV; // in GeV for parametrisation |
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368 | proj_momentum /= GeV; |
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369 | proj_energy /= GeV; |
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370 | proj_mass /= GeV; |
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371 | |
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372 | // General PDG fit constants |
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373 | |
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374 | G4double s0 = 5.38*5.38; // in Gev^2 |
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375 | G4double eta1 = 0.458; |
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376 | G4double eta2 = 0.458; |
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377 | G4double B = 0.308; |
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378 | |
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379 | |
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380 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition(); |
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381 | |
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382 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
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383 | G4bool proton = (nucleon == theProton); |
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384 | G4bool neutron = (nucleon == theNeutron); |
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385 | |
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386 | if( theParticle == theNeutron && pORn) |
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387 | { |
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388 | if( proj_momentum >= 10.) |
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389 | // if( proj_momentum >= 2.) |
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390 | { |
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391 | Delta = 1.; |
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392 | |
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393 | if( proj_energy < 40. ) Delta = 0.916+0.0021*proj_energy; |
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394 | |
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395 | if(proj_momentum >= 10.) |
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396 | { |
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397 | B0 = 7.5; |
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398 | A0 = 100. - B0*std::log(3.0e7); |
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399 | |
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400 | xsection = A0 + B0*std::log(proj_energy) - 11 |
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401 | + 103*std::pow(2*0.93827*proj_energy + proj_mass*proj_mass+ |
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402 | 0.93827*0.93827,-0.165); // mb |
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403 | } |
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404 | fTotalXsc = xsection; |
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405 | } |
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406 | else |
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407 | { |
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408 | // nn to be pp |
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409 | |
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410 | if(neutron) |
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411 | { |
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412 | if( proj_momentum < 0.73 ) |
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413 | { |
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414 | hnXsc = 23 + 50*( std::pow( std::log(0.73/proj_momentum), 3.5 ) ); |
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415 | } |
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416 | else if( proj_momentum < 1.05 ) |
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417 | { |
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418 | hnXsc = 23 + 40*(std::log(proj_momentum/0.73))* |
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419 | (std::log(proj_momentum/0.73)); |
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420 | } |
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421 | else // if( proj_momentum < 10. ) |
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422 | { |
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423 | hnXsc = 39.0+ |
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424 | 75*(proj_momentum - 1.2)/(std::pow(proj_momentum,3.0) + 0.15); |
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425 | } |
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426 | fTotalXsc = hnXsc; |
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427 | } |
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428 | // pn to be np |
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429 | |
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430 | if(proton) |
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431 | { |
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432 | if( proj_momentum < 0.8 ) |
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433 | { |
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434 | hpXsc = 33+30*std::pow(std::log(proj_momentum/1.3),4.0); |
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435 | } |
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436 | else if( proj_momentum < 1.4 ) |
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437 | { |
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438 | hpXsc = 33+30*std::pow(std::log(proj_momentum/0.95),2.0); |
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439 | } |
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440 | else // if( proj_momentum < 10. ) |
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441 | { |
---|
442 | hpXsc = 33.3+ |
---|
443 | 20.8*(std::pow(proj_momentum,2.0)-1.35)/ |
---|
444 | (std::pow(proj_momentum,2.50)+0.95); |
---|
445 | } |
---|
446 | fTotalXsc = hpXsc; |
---|
447 | } |
---|
448 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
449 | } |
---|
450 | } |
---|
451 | else if(theParticle == theProton && pORn) |
---|
452 | { |
---|
453 | if( proj_momentum >= 10.) |
---|
454 | // if( proj_momentum >= 2.) |
---|
455 | { |
---|
456 | Delta = 1.; |
---|
457 | |
---|
458 | if( proj_energy < 40. ) Delta = 0.916+0.0021*proj_energy; |
---|
459 | |
---|
460 | if(proj_momentum >= 10.) |
---|
461 | { |
---|
462 | B0 = 7.5; |
---|
463 | A0 = 100. - B0*std::log(3.0e7); |
---|
464 | |
---|
465 | xsection = A0 + B0*std::log(proj_energy) - 11 |
---|
466 | + 103*std::pow(2*0.93827*proj_energy + proj_mass*proj_mass+ |
---|
467 | 0.93827*0.93827,-0.165); // mb |
---|
468 | } |
---|
469 | fTotalXsc = xsection; |
---|
470 | } |
---|
471 | else |
---|
472 | { |
---|
473 | // pp |
---|
474 | |
---|
475 | if(proton) |
---|
476 | { |
---|
477 | if( proj_momentum < 0.73 ) |
---|
478 | { |
---|
479 | hpXsc = 23 + 50*( std::pow( std::log(0.73/proj_momentum), 3.5 ) ); |
---|
480 | } |
---|
481 | else if( proj_momentum < 1.05 ) |
---|
482 | { |
---|
483 | hpXsc = 23 + 40*(std::log(proj_momentum/0.73))* |
---|
484 | (std::log(proj_momentum/0.73)); |
---|
485 | } |
---|
486 | else // if( proj_momentum < 10. ) |
---|
487 | { |
---|
488 | hpXsc = 39.0+ |
---|
489 | 75*(proj_momentum - 1.2)/(std::pow(proj_momentum,3.0) + 0.15); |
---|
490 | } |
---|
491 | fTotalXsc = hpXsc; |
---|
492 | } |
---|
493 | // pn to be np |
---|
494 | |
---|
495 | if(neutron) |
---|
496 | { |
---|
497 | if( proj_momentum < 0.8 ) |
---|
498 | { |
---|
499 | hnXsc = 33+30*std::pow(std::log(proj_momentum/1.3),4.0); |
---|
500 | } |
---|
501 | else if( proj_momentum < 1.4 ) |
---|
502 | { |
---|
503 | hnXsc = 33+30*std::pow(std::log(proj_momentum/0.95),2.0); |
---|
504 | } |
---|
505 | else // if( proj_momentum < 10. ) |
---|
506 | { |
---|
507 | hnXsc = 33.3+ |
---|
508 | 20.8*(std::pow(proj_momentum,2.0)-1.35)/ |
---|
509 | (std::pow(proj_momentum,2.50)+0.95); |
---|
510 | } |
---|
511 | fTotalXsc = hnXsc; |
---|
512 | } |
---|
513 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
514 | // xsection = hpXsc*(Zt + Nt); |
---|
515 | // xsection = hnXsc*(Zt + Nt); |
---|
516 | } |
---|
517 | // xsection *= 0.95; |
---|
518 | } |
---|
519 | else if(theParticle == theAProton && pORn) |
---|
520 | { |
---|
521 | if(proton) |
---|
522 | { |
---|
523 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
524 | + 42.53*std::pow(sMand,-eta1) + 33.34*std::pow(sMand,-eta2)); |
---|
525 | } |
---|
526 | if(proton) |
---|
527 | { |
---|
528 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
529 | + 40.15*std::pow(sMand,-eta1) + 30.*std::pow(sMand,-eta2)); |
---|
530 | } |
---|
531 | fTotalXsc = xsection; |
---|
532 | } |
---|
533 | else if(theParticle == thePiPlus && pORn) |
---|
534 | { |
---|
535 | if(proton) |
---|
536 | { |
---|
537 | if(proj_momentum < 0.4) |
---|
538 | { |
---|
539 | G4double Ex3 = 180*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.085/0.085); |
---|
540 | hpXsc = Ex3+20.0; |
---|
541 | } |
---|
542 | else if(proj_momentum < 1.15) |
---|
543 | { |
---|
544 | G4double Ex4 = 88*(std::log(proj_momentum/0.75))*(std::log(proj_momentum/0.75)); |
---|
545 | hpXsc = Ex4+14.0; |
---|
546 | } |
---|
547 | else if(proj_momentum < 3.5) |
---|
548 | { |
---|
549 | G4double Ex1 = 3.2*std::exp(-(proj_momentum-2.55)*(proj_momentum-2.55)/0.55/0.55); |
---|
550 | G4double Ex2 = 12*std::exp(-(proj_momentum-1.47)*(proj_momentum-1.47)/0.225/0.225); |
---|
551 | hpXsc = Ex1+Ex2+27.5; |
---|
552 | } |
---|
553 | else // if(proj_momentum > 3.5) // mb |
---|
554 | { |
---|
555 | hpXsc = 10.6+2.*std::log(proj_energy)+25*std::pow(proj_energy,-0.43); |
---|
556 | } |
---|
557 | fTotalXsc = hpXsc; |
---|
558 | } |
---|
559 | |
---|
560 | // pi+n = pi-p?? |
---|
561 | |
---|
562 | if(neutron) |
---|
563 | { |
---|
564 | if(proj_momentum < 0.37) |
---|
565 | { |
---|
566 | hnXsc = 28.0 + 40*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.07/0.07); |
---|
567 | } |
---|
568 | else if(proj_momentum<0.65) |
---|
569 | { |
---|
570 | hnXsc = 26+110*(std::log(proj_momentum/0.48))*(std::log(proj_momentum/0.48)); |
---|
571 | } |
---|
572 | else if(proj_momentum<1.3) |
---|
573 | { |
---|
574 | hnXsc = 36.1+ |
---|
575 | 10*std::exp(-(proj_momentum-0.72)*(proj_momentum-0.72)/0.06/0.06)+ |
---|
576 | 24*std::exp(-(proj_momentum-1.015)*(proj_momentum-1.015)/0.075/0.075); |
---|
577 | } |
---|
578 | else if(proj_momentum<3.0) |
---|
579 | { |
---|
580 | hnXsc = 36.1+0.079-4.313*std::log(proj_momentum)+ |
---|
581 | 3*std::exp(-(proj_momentum-2.1)*(proj_momentum-2.1)/0.4/0.4)+ |
---|
582 | 1.5*std::exp(-(proj_momentum-1.4)*(proj_momentum-1.4)/0.12/0.12); |
---|
583 | } |
---|
584 | else // mb |
---|
585 | { |
---|
586 | hnXsc = 10.6+2*std::log(proj_energy)+30*std::pow(proj_energy,-0.43); |
---|
587 | } |
---|
588 | fTotalXsc = hnXsc; |
---|
589 | } |
---|
590 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
591 | } |
---|
592 | else if(theParticle == thePiMinus && pORn) |
---|
593 | { |
---|
594 | // pi-n = pi+p?? |
---|
595 | |
---|
596 | if(neutron) |
---|
597 | { |
---|
598 | if(proj_momentum < 0.4) |
---|
599 | { |
---|
600 | G4double Ex3 = 180*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.085/0.085); |
---|
601 | hnXsc = Ex3+20.0; |
---|
602 | } |
---|
603 | else if(proj_momentum < 1.15) |
---|
604 | { |
---|
605 | G4double Ex4 = 88*(std::log(proj_momentum/0.75))*(std::log(proj_momentum/0.75)); |
---|
606 | hnXsc = Ex4+14.0; |
---|
607 | } |
---|
608 | else if(proj_momentum < 3.5) |
---|
609 | { |
---|
610 | G4double Ex1 = 3.2*std::exp(-(proj_momentum-2.55)*(proj_momentum-2.55)/0.55/0.55); |
---|
611 | G4double Ex2 = 12*std::exp(-(proj_momentum-1.47)*(proj_momentum-1.47)/0.225/0.225); |
---|
612 | hnXsc = Ex1+Ex2+27.5; |
---|
613 | } |
---|
614 | else // if(proj_momentum > 3.5) // mb |
---|
615 | { |
---|
616 | hnXsc = 10.6+2.*std::log(proj_energy)+25*std::pow(proj_energy,-0.43); |
---|
617 | } |
---|
618 | fTotalXsc = hnXsc; |
---|
619 | } |
---|
620 | // pi-p |
---|
621 | |
---|
622 | if(proton) |
---|
623 | { |
---|
624 | if(proj_momentum < 0.37) |
---|
625 | { |
---|
626 | hpXsc = 28.0 + 40*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.07/0.07); |
---|
627 | } |
---|
628 | else if(proj_momentum<0.65) |
---|
629 | { |
---|
630 | hpXsc = 26+110*(std::log(proj_momentum/0.48))*(std::log(proj_momentum/0.48)); |
---|
631 | } |
---|
632 | else if(proj_momentum<1.3) |
---|
633 | { |
---|
634 | hpXsc = 36.1+ |
---|
635 | 10*std::exp(-(proj_momentum-0.72)*(proj_momentum-0.72)/0.06/0.06)+ |
---|
636 | 24*std::exp(-(proj_momentum-1.015)*(proj_momentum-1.015)/0.075/0.075); |
---|
637 | } |
---|
638 | else if(proj_momentum<3.0) |
---|
639 | { |
---|
640 | hpXsc = 36.1+0.079-4.313*std::log(proj_momentum)+ |
---|
641 | 3*std::exp(-(proj_momentum-2.1)*(proj_momentum-2.1)/0.4/0.4)+ |
---|
642 | 1.5*std::exp(-(proj_momentum-1.4)*(proj_momentum-1.4)/0.12/0.12); |
---|
643 | } |
---|
644 | else // mb |
---|
645 | { |
---|
646 | hpXsc = 10.6+2*std::log(proj_energy)+30*std::pow(proj_energy,-0.43); |
---|
647 | } |
---|
648 | fTotalXsc = hpXsc; |
---|
649 | } |
---|
650 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
651 | } |
---|
652 | else if(theParticle == theKPlus && pORn) |
---|
653 | { |
---|
654 | if(proton) |
---|
655 | { |
---|
656 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
---|
657 | + 7.14*std::pow(sMand,-eta1) - 13.45*std::pow(sMand,-eta2)); |
---|
658 | } |
---|
659 | if(neutron) |
---|
660 | { |
---|
661 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
---|
662 | + 5.17*std::pow(sMand,-eta1) - 7.23*std::pow(sMand,-eta2)); |
---|
663 | } |
---|
664 | fTotalXsc = xsection; |
---|
665 | } |
---|
666 | else if(theParticle == theKMinus && pORn) |
---|
667 | { |
---|
668 | if(proton) |
---|
669 | { |
---|
670 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
---|
671 | + 7.14*std::pow(sMand,-eta1) + 13.45*std::pow(sMand,-eta2)); |
---|
672 | } |
---|
673 | if(neutron) |
---|
674 | { |
---|
675 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
---|
676 | + 5.17*std::pow(sMand,-eta1) + 7.23*std::pow(sMand,-eta2)); |
---|
677 | } |
---|
678 | fTotalXsc = xsection; |
---|
679 | } |
---|
680 | else if(theParticle == theSMinus && pORn) |
---|
681 | { |
---|
682 | xsection = At*( 35.20 + B*std::pow(std::log(sMand/s0),2.) |
---|
683 | - 199.*std::pow(sMand,-eta1) + 264.*std::pow(sMand,-eta2)); |
---|
684 | } |
---|
685 | else if(theParticle == theGamma && pORn) // modify later on |
---|
686 | { |
---|
687 | xsection = At*( 0.0 + B*std::pow(std::log(sMand/s0),2.) |
---|
688 | + 0.032*std::pow(sMand,-eta1) - 0.0*std::pow(sMand,-eta2)); |
---|
689 | fTotalXsc = xsection; |
---|
690 | } |
---|
691 | else // as proton ??? |
---|
692 | { |
---|
693 | if(proton) |
---|
694 | { |
---|
695 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
696 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2)); |
---|
697 | } |
---|
698 | if(neutron) |
---|
699 | { |
---|
700 | xsection += Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
701 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2)); |
---|
702 | } |
---|
703 | fTotalXsc = xsection; |
---|
704 | } |
---|
705 | fTotalXsc *= millibarn; // parametrised in mb |
---|
706 | // xsection *= millibarn; // parametrised in mb |
---|
707 | |
---|
708 | fInelasticXsc = 0.83*fTotalXsc; |
---|
709 | fElasticXsc = fTotalXsc - fInelasticXsc; |
---|
710 | if (fElasticXsc < 0.)fElasticXsc = 0.; |
---|
711 | |
---|
712 | return fTotalXsc; |
---|
713 | } |
---|
714 | |
---|
715 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
716 | // |
---|
717 | // Returns hadron-nucleon cross-section based on V. Uzjinsky parametrisation of |
---|
718 | // data from G4FTFCrossSection class |
---|
719 | |
---|
720 | G4double |
---|
721 | G4HadronNucleonXsc::GetHadronNucleonXscVU(const G4DynamicParticle* aParticle, |
---|
722 | const G4ParticleDefinition* nucleon ) |
---|
723 | { |
---|
724 | G4int PDGcode = aParticle->GetDefinition()->GetPDGEncoding(); |
---|
725 | G4int absPDGcode = std::abs(PDGcode); |
---|
726 | G4double Elab = aParticle->GetTotalEnergy(); |
---|
727 | // (s - 2*0.88*GeV*GeV)/(2*0.939*GeV)/GeV; |
---|
728 | G4double Plab = aParticle->GetMomentum().mag(); |
---|
729 | // std::sqrt(Elab * Elab - 0.88); |
---|
730 | |
---|
731 | Elab /= GeV; |
---|
732 | Plab /= GeV; |
---|
733 | |
---|
734 | G4double LogPlab = std::log( Plab ); |
---|
735 | G4double sqrLogPlab = LogPlab * LogPlab; |
---|
736 | |
---|
737 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
---|
738 | G4bool proton = (nucleon == theProton); |
---|
739 | G4bool neutron = (nucleon == theNeutron); |
---|
740 | |
---|
741 | |
---|
742 | if( absPDGcode > 1000 && pORn ) //------Projectile is baryon - |
---|
743 | { |
---|
744 | if(proton) |
---|
745 | { |
---|
746 | fTotalXsc = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; |
---|
747 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
748 | } |
---|
749 | if(neutron) |
---|
750 | { |
---|
751 | fTotalXsc = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; |
---|
752 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
753 | } |
---|
754 | } |
---|
755 | else if( PDGcode == 211 && pORn ) //------Projectile is PionPlus ---- |
---|
756 | { |
---|
757 | if(proton) |
---|
758 | { |
---|
759 | fTotalXsc = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; |
---|
760 | fElasticXsc = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; |
---|
761 | } |
---|
762 | if(neutron) |
---|
763 | { |
---|
764 | fTotalXsc = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; |
---|
765 | fElasticXsc = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; |
---|
766 | } |
---|
767 | } |
---|
768 | else if( PDGcode == -211 && pORn ) //------Projectile is PionMinus ---- |
---|
769 | { |
---|
770 | if(proton) |
---|
771 | { |
---|
772 | fTotalXsc = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; |
---|
773 | fElasticXsc = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; |
---|
774 | } |
---|
775 | if(neutron) |
---|
776 | { |
---|
777 | fTotalXsc = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; |
---|
778 | fElasticXsc = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; |
---|
779 | } |
---|
780 | } |
---|
781 | else if( PDGcode == 111 && pORn ) //------Projectile is PionZero -- |
---|
782 | { |
---|
783 | if(proton) |
---|
784 | { |
---|
785 | fTotalXsc = (16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab + //Pi+ |
---|
786 | 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab)/2; //Pi- |
---|
787 | |
---|
788 | fElasticXsc = ( 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab + //Pi+ |
---|
789 | 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
---|
790 | |
---|
791 | } |
---|
792 | if(neutron) |
---|
793 | { |
---|
794 | fTotalXsc = (33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab + //Pi+ |
---|
795 | 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
---|
796 | fElasticXsc = ( 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab + //Pi+ |
---|
797 | 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
---|
798 | } |
---|
799 | } |
---|
800 | else if( PDGcode == 321 && pORn ) //------Projectile is KaonPlus -- |
---|
801 | { |
---|
802 | if(proton) |
---|
803 | { |
---|
804 | fTotalXsc = 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab; |
---|
805 | fElasticXsc = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab; |
---|
806 | } |
---|
807 | if(neutron) |
---|
808 | { |
---|
809 | fTotalXsc = 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab; |
---|
810 | fElasticXsc = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab; |
---|
811 | } |
---|
812 | } |
---|
813 | else if( PDGcode ==-321 && pORn ) //------Projectile is KaonMinus ---- |
---|
814 | { |
---|
815 | if(proton) |
---|
816 | { |
---|
817 | fTotalXsc = 32.1 + 0. *std::pow(Plab, 0. ) + 0.66*sqrLogPlab - 5.6*LogPlab; |
---|
818 | fElasticXsc = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29*sqrLogPlab - 2.4*LogPlab; |
---|
819 | } |
---|
820 | if(neutron) |
---|
821 | { |
---|
822 | fTotalXsc = 25.2 + 0. *std::pow(Plab, 0. ) + 0.38*sqrLogPlab - 2.9*LogPlab; |
---|
823 | fElasticXsc = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16*sqrLogPlab - 1.3*LogPlab; |
---|
824 | } |
---|
825 | } |
---|
826 | else if( PDGcode == 311 && pORn ) //------Projectile is KaonZero ----- |
---|
827 | { |
---|
828 | if(proton) |
---|
829 | { |
---|
830 | fTotalXsc = ( 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab + //K+ |
---|
831 | 32.1 + 0. *std::pow(Plab, 0. ) + 0.66 *sqrLogPlab - 5.6 *LogPlab)/2; //K- |
---|
832 | fElasticXsc = ( 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab + //K+ |
---|
833 | 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab)/2; //K- |
---|
834 | } |
---|
835 | if(neutron) |
---|
836 | { |
---|
837 | fTotalXsc = ( 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab + //K+ |
---|
838 | 25.2 + 0. *std::pow(Plab, 0. ) + 0.38 *sqrLogPlab - 2.9 *LogPlab)/2; //K- |
---|
839 | fElasticXsc = ( 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab + //K+ |
---|
840 | 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab)/2; //K- |
---|
841 | } |
---|
842 | } |
---|
843 | else //------Projectile is undefined, Nucleon assumed |
---|
844 | { |
---|
845 | if(proton) |
---|
846 | { |
---|
847 | fTotalXsc = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; |
---|
848 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
849 | } |
---|
850 | if(neutron) |
---|
851 | { |
---|
852 | fTotalXsc = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; |
---|
853 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
854 | } |
---|
855 | } |
---|
856 | fTotalXsc *= millibarn; |
---|
857 | fElasticXsc *= millibarn; |
---|
858 | fInelasticXsc = fTotalXsc - fElasticXsc; |
---|
859 | if (fInelasticXsc < 0.) fInelasticXsc = 0.; |
---|
860 | |
---|
861 | return fTotalXsc; |
---|
862 | } |
---|
863 | |
---|
864 | //////////////////////////////////////////////////////////////////////////////////// |
---|
865 | // |
---|
866 | // |
---|
867 | |
---|
868 | G4double G4HadronNucleonXsc::CalculateEcmValue( const G4double mp , |
---|
869 | const G4double mt , |
---|
870 | const G4double Plab ) |
---|
871 | { |
---|
872 | G4double Elab = std::sqrt ( mp * mp + Plab * Plab ); |
---|
873 | G4double Ecm = std::sqrt ( mp * mp + mt * mt + 2 * Elab * mt ); |
---|
874 | // G4double Pcm = Plab * mt / Ecm; |
---|
875 | // G4double KEcm = std::sqrt ( Pcm * Pcm + mp * mp ) - mp; |
---|
876 | |
---|
877 | return Ecm ; // KEcm; |
---|
878 | } |
---|
879 | |
---|
880 | |
---|
881 | //////////////////////////////////////////////////////////////////////////////////// |
---|
882 | // |
---|
883 | // |
---|
884 | |
---|
885 | G4double G4HadronNucleonXsc::CalcMandelstamS( const G4double mp , |
---|
886 | const G4double mt , |
---|
887 | const G4double Plab ) |
---|
888 | { |
---|
889 | G4double Elab = std::sqrt ( mp * mp + Plab * Plab ); |
---|
890 | G4double sMand = mp*mp + mt*mt + 2*Elab*mt ; |
---|
891 | |
---|
892 | return sMand; |
---|
893 | } |
---|
894 | |
---|
895 | |
---|
896 | // |
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897 | // |
---|
898 | /////////////////////////////////////////////////////////////////////////////////////// |
---|