1 | // |
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2 | // ******************************************************************** |
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3 | // * License and Disclaimer * |
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15 | // * use. Please see the license in the file LICENSE and URL above * |
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24 | // ******************************************************************** |
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25 | // |
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26 | // |
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27 | // $Id: G4DiffractiveExcitation.cc,v 1.23 2010/11/15 10:02:38 vuzhinsk Exp $ |
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28 | // ------------------------------------------------------------ |
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29 | // GEANT 4 class implemetation file |
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30 | // |
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31 | // ---------------- G4DiffractiveExcitation -------------- |
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32 | // by Gunter Folger, October 1998. |
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33 | // diffractive Excitation used by strings models |
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34 | // Take a projectile and a target |
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35 | // excite the projectile and target |
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36 | // Essential changed by V. Uzhinsky in November - December 2006 |
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37 | // in order to put it in a correspondence with original FRITIOF |
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38 | // model. Variant of FRITIOF with nucleon de-excitation is implemented. |
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39 | // Other changes by V.Uzhinsky in May 2007 were introduced to fit |
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40 | // meson-nucleon interactions. Additional changes by V. Uzhinsky |
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41 | // were introduced in December 2006. They treat diffraction dissociation |
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42 | // processes more exactly. |
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43 | // --------------------------------------------------------------------- |
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44 | |
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45 | |
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46 | #include "globals.hh" |
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47 | #include "Randomize.hh" |
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48 | |
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49 | #include "G4DiffractiveExcitation.hh" |
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50 | #include "G4FTFParameters.hh" |
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51 | #include "G4ElasticHNScattering.hh" |
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52 | |
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53 | #include "G4LorentzRotation.hh" |
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54 | #include "G4RotationMatrix.hh" |
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55 | #include "G4ThreeVector.hh" |
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56 | #include "G4ParticleDefinition.hh" |
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57 | #include "G4VSplitableHadron.hh" |
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58 | #include "G4ExcitedString.hh" |
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59 | #include "G4ParticleTable.hh" |
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60 | #include "G4Neutron.hh" |
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61 | #include "G4ParticleDefinition.hh" |
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62 | |
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63 | //#include "G4ios.hh" |
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64 | //#include "UZHI_diffraction.hh" |
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65 | |
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66 | G4DiffractiveExcitation::G4DiffractiveExcitation() |
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67 | { |
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68 | } |
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69 | |
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70 | // --------------------------------------------------------------------- |
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71 | G4bool G4DiffractiveExcitation:: |
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72 | ExciteParticipants(G4VSplitableHadron *projectile, |
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73 | G4VSplitableHadron *target, |
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74 | G4FTFParameters *theParameters, |
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75 | G4ElasticHNScattering *theElastic) const |
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76 | { |
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77 | // -------------------- Projectile parameters ----------------------- |
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78 | G4LorentzVector Pprojectile=projectile->Get4Momentum(); |
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79 | |
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80 | if(Pprojectile.z() < 0.) |
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81 | { |
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82 | target->SetStatus(2); |
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83 | return false; |
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84 | } |
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85 | |
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86 | G4double ProjectileRapidity = Pprojectile.rapidity(); |
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87 | |
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88 | G4int ProjectilePDGcode=projectile->GetDefinition()->GetPDGEncoding(); |
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89 | G4int absProjectilePDGcode=std::abs(ProjectilePDGcode); |
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90 | |
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91 | G4bool PutOnMassShell(false); |
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92 | // G4double M0projectile=projectile->GetDefinition()->GetPDGMass(); // With de-excitation |
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93 | G4double M0projectile = Pprojectile.mag(); // Without de-excitation |
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94 | |
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95 | if(M0projectile < projectile->GetDefinition()->GetPDGMass()) |
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96 | { |
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97 | PutOnMassShell=true; |
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98 | M0projectile=projectile->GetDefinition()->GetPDGMass(); |
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99 | } |
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100 | |
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101 | G4double M0projectile2 = M0projectile * M0projectile; |
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102 | |
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103 | G4double ProjectileDiffStateMinMass=theParameters->GetProjMinDiffMass(); |
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104 | G4double ProjectileNonDiffStateMinMass=theParameters->GetProjMinNonDiffMass(); |
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105 | G4double ProbProjectileDiffraction=theParameters->GetProbabilityOfProjDiff(); |
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106 | |
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107 | // -------------------- Target parameters ------------------------- |
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108 | G4int TargetPDGcode=target->GetDefinition()->GetPDGEncoding(); |
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109 | G4int absTargetPDGcode=std::abs(TargetPDGcode); |
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110 | //G4cout<<"Excit "<<ProjectilePDGcode<<" "<<TargetPDGcode<<G4endl; |
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111 | |
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112 | G4LorentzVector Ptarget=target->Get4Momentum(); |
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113 | |
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114 | G4double M0target = Ptarget.mag(); |
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115 | |
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116 | // G4double TargetRapidity = Ptarget.rapidity(); |
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117 | |
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118 | if(M0target < target->GetDefinition()->GetPDGMass()) |
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119 | { |
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120 | PutOnMassShell=true; |
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121 | M0target=target->GetDefinition()->GetPDGMass(); |
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122 | } |
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123 | |
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124 | G4double M0target2 = M0target * M0target; |
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125 | |
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126 | G4double TargetDiffStateMinMass=theParameters->GetTarMinDiffMass(); |
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127 | G4double TargetNonDiffStateMinMass=theParameters->GetTarMinNonDiffMass(); |
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128 | G4double ProbTargetDiffraction=theParameters->GetProbabilityOfTarDiff(); |
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129 | |
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130 | G4double AveragePt2=theParameters->GetAveragePt2(); |
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131 | |
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132 | // G4double ProbOfDiffraction=ProbProjectileDiffraction + |
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133 | // ProbTargetDiffraction; |
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134 | |
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135 | G4double SumMasses=M0projectile+M0target+200.*MeV; |
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136 | |
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137 | // Kinematical properties of the interactions -------------- |
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138 | G4LorentzVector Psum; // 4-momentum in CMS |
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139 | Psum=Pprojectile+Ptarget; |
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140 | G4double S=Psum.mag2(); |
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141 | |
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142 | // Transform momenta to cms and then rotate parallel to z axis; |
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143 | G4LorentzRotation toCms(-1*Psum.boostVector()); |
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144 | |
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145 | G4LorentzVector Ptmp=toCms*Pprojectile; |
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146 | |
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147 | if ( Ptmp.pz() <= 0. ) |
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148 | { |
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149 | target->SetStatus(2); |
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150 | // "String" moving backwards in CMS, abort collision !! |
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151 | return false; |
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152 | } |
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153 | |
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154 | toCms.rotateZ(-1*Ptmp.phi()); |
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155 | toCms.rotateY(-1*Ptmp.theta()); |
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156 | |
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157 | G4LorentzRotation toLab(toCms.inverse()); |
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158 | |
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159 | Pprojectile.transform(toCms); |
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160 | Ptarget.transform(toCms); |
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161 | |
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162 | G4double PZcms2, PZcms; |
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163 | |
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164 | G4double SqrtS=std::sqrt(S); |
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165 | //G4cout<<"SqrtS < 2300*MeV "<<SqrtS<<G4endl; |
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166 | if(absProjectilePDGcode > 1000 && (SqrtS < 2300*MeV || SqrtS < SumMasses)) |
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167 | {target->SetStatus(2); return false;} // The model cannot work for |
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168 | // p+p-interactions |
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169 | // at Plab < 1.62 GeV/c. |
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170 | |
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171 | if(( absProjectilePDGcode == 211 || ProjectilePDGcode == 111) && |
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172 | ((SqrtS < 1600*MeV) || (SqrtS < SumMasses))) |
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173 | {target->SetStatus(2); return false;} // The model cannot work for |
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174 | // Pi+p-interactions |
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175 | // at Plab < 1. GeV/c. |
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176 | |
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177 | if(( (absProjectilePDGcode == 321) || (ProjectilePDGcode == -311) || |
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178 | (absProjectilePDGcode == 311) || (absProjectilePDGcode == 130) || |
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179 | (absProjectilePDGcode == 310)) && ((SqrtS < 1600*MeV) || (SqrtS < SumMasses))) |
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180 | {target->SetStatus(2); return false;} // The model cannot work for |
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181 | // K+p-interactions |
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182 | // at Plab < ??? GeV/c. ??? |
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183 | |
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184 | PZcms2=(S*S+M0projectile2*M0projectile2+M0target2*M0target2- |
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185 | 2*S*M0projectile2 - 2*S*M0target2 - 2*M0projectile2*M0target2) |
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186 | /4./S; |
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187 | |
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188 | if(PZcms2 < 0) |
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189 | {target->SetStatus(2); return false;} // It can be in an interaction with |
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190 | // off-shell nuclear nucleon |
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191 | |
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192 | PZcms = std::sqrt(PZcms2); |
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193 | |
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194 | if(PutOnMassShell) |
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195 | { |
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196 | if(Pprojectile.z() > 0.) |
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197 | { |
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198 | Pprojectile.setPz( PZcms); |
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199 | Ptarget.setPz( -PZcms); |
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200 | } |
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201 | else |
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202 | { |
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203 | Pprojectile.setPz(-PZcms); |
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204 | Ptarget.setPz( PZcms); |
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205 | }; |
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206 | |
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207 | Pprojectile.setE(std::sqrt(M0projectile2 + |
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208 | Pprojectile.x()*Pprojectile.x()+ |
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209 | Pprojectile.y()*Pprojectile.y()+ |
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210 | PZcms2)); |
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211 | Ptarget.setE(std::sqrt(M0target2 + |
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212 | Ptarget.x()*Ptarget.x()+ |
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213 | Ptarget.y()*Ptarget.y()+ |
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214 | PZcms2)); |
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215 | } |
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216 | |
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217 | G4double maxPtSquare; // = PZcms2; |
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218 | /* |
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219 | G4cout<<"Start --------------------"<<G4endl; |
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220 | G4cout<<"Proj "<<M0projectile<<" "<<ProjectileDiffStateMinMass<<" "<<ProjectileNonDiffStateMinMass<<G4endl; |
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221 | G4cout<<"Targ "<<M0target <<" "<<TargetDiffStateMinMass <<" "<<TargetNonDiffStateMinMass<<G4endl; |
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222 | G4cout<<"SqrtS "<<SqrtS<<G4endl; |
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223 | G4cout<<"Rapid "<<ProjectileRapidity<<G4endl; //" "<<TargetRapidity<<G4endl; |
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224 | */ |
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225 | // Charge exchange can be possible for baryons ----------------- |
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226 | |
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227 | // Getting the values needed for exchange ---------------------- |
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228 | G4double MagQuarkExchange =theParameters->GetMagQuarkExchange(); |
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229 | G4double SlopeQuarkExchange =theParameters->GetSlopeQuarkExchange(); |
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230 | G4double DeltaProbAtQuarkExchange=theParameters->GetDeltaProbAtQuarkExchange(); |
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231 | |
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232 | // G4double NucleonMass= |
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233 | // (G4ParticleTable::GetParticleTable()->FindParticle(2112))->GetPDGMass(); |
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234 | G4double DeltaMass= |
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235 | (G4ParticleTable::GetParticleTable()->FindParticle(2224))->GetPDGMass(); |
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236 | |
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237 | //G4cout<<MagQuarkExchange*std::exp(-SlopeQuarkExchange*(ProjectileRapidity - TargetRapidity))<<G4endl; |
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238 | |
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239 | //G4cout<<"Q exc Mag Slop Wdelta"<<MagQuarkExchange<<" "<<SlopeQuarkExchange<<" "<<DeltaProbAtQuarkExchange<<G4endl; |
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240 | //G4cout<<"ProjectileRapidity "<<ProjectileRapidity<<G4endl; |
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241 | //G4cout<<MagQuarkExchange*std::exp(-SlopeQuarkExchange*(ProjectileRapidity))<<G4endl; |
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242 | //G4int Uzhi; G4cin>>Uzhi; |
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243 | // Check for possible quark exchange ----------------------------------- |
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244 | |
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245 | if(G4UniformRand() < MagQuarkExchange* |
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246 | std::exp(-SlopeQuarkExchange*ProjectileRapidity)) //TargetRapidity))) 1.45 |
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247 | { |
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248 | // std::exp(-SlopeQuarkExchange*(ProjectileRapidity - 1.36))) //TargetRapidity))) 1.45 |
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249 | //G4cout<<"Q exchange"<<G4endl; |
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250 | G4int NewProjCode(0), NewTargCode(0); |
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251 | |
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252 | G4int ProjQ1(0), ProjQ2(0), ProjQ3(0); |
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253 | |
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254 | // Projectile unpacking -------------------------- |
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255 | if(absProjectilePDGcode < 1000 ) |
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256 | { // projectile is meson ----------------- |
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257 | UnpackMeson(ProjectilePDGcode, ProjQ1, ProjQ2); |
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258 | } else |
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259 | { // projectile is baryon ---------------- |
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260 | UnpackBaryon(ProjectilePDGcode, ProjQ1, ProjQ2, ProjQ3); |
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261 | } // End of the hadron's unpacking ---------- |
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262 | |
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263 | // Target unpacking ------------------------------ |
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264 | G4int TargQ1(0), TargQ2(0), TargQ3(0); |
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265 | UnpackBaryon(TargetPDGcode, TargQ1, TargQ2, TargQ3); |
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266 | |
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267 | //G4cout<<ProjQ1<<" "<<ProjQ2<<" "<<ProjQ3<<G4endl; |
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268 | //G4cout<<TargQ1<<" "<<TargQ2<<" "<<TargQ3<<G4endl; |
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269 | // Sampling of exchanged quarks ------------------- |
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270 | G4int ProjExchangeQ(0); |
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271 | G4int TargExchangeQ(0); |
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272 | |
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273 | if(absProjectilePDGcode < 1000 ) |
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274 | { // projectile is meson ----------------- |
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275 | |
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276 | if(ProjQ1 > 0 ) // ProjQ1 is quark |
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277 | { |
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278 | ProjExchangeQ = ProjQ1; |
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279 | if(ProjExchangeQ != TargQ1) |
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280 | { |
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281 | TargExchangeQ = TargQ1; TargQ1=ProjExchangeQ; ProjQ1=TargExchangeQ; |
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282 | } else |
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283 | if(ProjExchangeQ != TargQ2) |
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284 | { |
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285 | TargExchangeQ = TargQ2; TargQ2=ProjExchangeQ; ProjQ1=TargExchangeQ; |
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286 | } else |
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287 | { |
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288 | TargExchangeQ = TargQ3; TargQ3=ProjExchangeQ; ProjQ1=TargExchangeQ; |
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289 | } |
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290 | } else // ProjQ2 is quark |
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291 | { |
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292 | ProjExchangeQ = ProjQ2; |
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293 | if(ProjExchangeQ != TargQ1) |
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294 | { |
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295 | TargExchangeQ = TargQ1; TargQ1=ProjExchangeQ; ProjQ2=TargExchangeQ; |
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296 | } else |
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297 | if(ProjExchangeQ != TargQ2) |
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298 | { |
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299 | TargExchangeQ = TargQ2; TargQ2=ProjExchangeQ; ProjQ2=TargExchangeQ; |
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300 | } else |
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301 | { |
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302 | TargExchangeQ = TargQ3; TargQ3=ProjExchangeQ; ProjQ2=TargExchangeQ; |
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303 | } |
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304 | } // End of if(ProjQ1 > 0 ) // ProjQ1 is quark |
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305 | |
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306 | G4int aProjQ1=std::abs(ProjQ1); |
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307 | G4int aProjQ2=std::abs(ProjQ2); |
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308 | if(aProjQ1 == aProjQ2) {NewProjCode = 111;} // Pi0-meson |
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309 | else // |ProjQ1| # |ProjQ2| |
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310 | { |
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311 | if(aProjQ1 > aProjQ2) {NewProjCode = aProjQ1*100+aProjQ2*10+1;} |
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312 | else {NewProjCode = aProjQ2*100+aProjQ1*10+1;} |
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313 | NewProjCode *=(ProjectilePDGcode/absProjectilePDGcode); |
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314 | } |
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315 | |
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316 | G4bool ProjExcited=false; |
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317 | if(G4UniformRand() < 0.5) |
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318 | { |
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319 | NewProjCode +=2; // Excited Pi0-meson |
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320 | ProjExcited=true; |
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321 | } |
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322 | //G4cout<<G4endl<<"NewProjCode "<<NewProjCode<<G4endl; |
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323 | |
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324 | G4ParticleDefinition* TestParticle=0; |
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325 | TestParticle=G4ParticleTable::GetParticleTable()->FindParticle(NewProjCode); |
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326 | if(TestParticle) |
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327 | { |
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328 | M0projectile= |
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329 | (G4ParticleTable::GetParticleTable()->FindParticle(NewProjCode))->GetPDGMass(); |
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330 | M0projectile2 = M0projectile * M0projectile; |
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331 | |
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332 | ProjectileDiffStateMinMass =M0projectile+210.*MeV; //210 MeV=m_pi+70 MeV |
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333 | ProjectileNonDiffStateMinMass=M0projectile+210.*MeV; //210 MeV=m_pi+70 MeV |
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334 | } else |
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335 | {return false;} |
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336 | |
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337 | //G4cout<<"New TrQ "<<TargQ1<<" "<<TargQ2<<" "<<TargQ3<<G4endl; |
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338 | NewTargCode = NewNucleonId(TargQ1, TargQ2, TargQ3); |
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339 | //G4cout<<"NewTargCode "<<NewTargCode<<G4endl; |
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340 | |
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341 | if( (TargQ1 == TargQ2) && (TargQ1 == TargQ3) && |
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342 | (SqrtS > M0projectile+DeltaMass)) {NewTargCode +=2; //Create Delta isobar |
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343 | ProjExcited=true;} |
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344 | else if( target->GetDefinition()->GetPDGiIsospin() == 3 ) //Delta was the target |
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345 | { if(G4UniformRand() > DeltaProbAtQuarkExchange){NewTargCode +=2; //Save Delta isobar |
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346 | ProjExcited=true;} |
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347 | else {} // De-excite initial Delta isobar |
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348 | } |
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349 | |
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350 | // else if((!CreateDelta) && |
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351 | else if((!ProjExcited) && |
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352 | (G4UniformRand() < DeltaProbAtQuarkExchange) && //Nucleon was the target |
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353 | (SqrtS > M0projectile+DeltaMass)) {NewTargCode +=2;} //Create Delta isobar |
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354 | // else if( CreateDelta) {NewTargCode +=2;} |
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355 | else {} //Save initial nucleon |
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356 | |
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357 | // target->SetDefinition( // Fix 15.12.09 |
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358 | // G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode));// Fix 15.12.09 |
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359 | |
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360 | //G4cout<<"NewTargCode "<<NewTargCode<<G4endl; |
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361 | //G4int Uzhi; G4cin>>Uzhi; |
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362 | TestParticle=G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode); |
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363 | if(TestParticle) |
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364 | { |
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365 | M0target= |
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366 | (G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode))->GetPDGMass(); |
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367 | M0target2 = M0target * M0target; |
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368 | |
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369 | TargetDiffStateMinMass =M0target+220.*MeV; //220 MeV=m_pi+80 MeV; |
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370 | TargetNonDiffStateMinMass=M0target+220.*MeV; //220 MeV=m_pi+80 MeV; |
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371 | } else |
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372 | {return false;} |
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373 | } else |
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374 | { // projectile is baryon ---------------- |
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375 | //========================================================================= |
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376 | G4double Same=theParameters->GetProbOfSameQuarkExchange(); //0.3; //0.5; 0. |
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377 | G4bool ProjDeltaHasCreated(false); |
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378 | G4bool TargDeltaHasCreated(false); |
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379 | |
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380 | G4double Ksi=G4UniformRand(); |
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381 | if(G4UniformRand() < 0.5) // Sampling exchange quark from proj. or targ. |
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382 | { // Sampling exchanged quark from the projectile --- |
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383 | if( Ksi < 0.333333 ) |
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384 | {ProjExchangeQ = ProjQ1;} |
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385 | else if( (0.333333 <= Ksi) && (Ksi < 0.666667)) |
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386 | {ProjExchangeQ = ProjQ2;} |
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387 | else |
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388 | {ProjExchangeQ = ProjQ3;} |
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389 | |
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390 | //G4cout<<"ProjExchangeQ "<<ProjExchangeQ<<G4endl; |
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391 | if((ProjExchangeQ != TargQ1)||(G4UniformRand()<Same)) |
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392 | { |
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393 | TargExchangeQ = TargQ1; TargQ1=ProjExchangeQ; ProjExchangeQ=TargExchangeQ; |
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394 | } else |
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395 | if((ProjExchangeQ != TargQ2)||(G4UniformRand()<Same)) |
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396 | { |
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397 | TargExchangeQ = TargQ2; TargQ2=ProjExchangeQ; ProjExchangeQ=TargExchangeQ; |
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398 | } else |
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399 | { |
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400 | TargExchangeQ = TargQ3; TargQ3=ProjExchangeQ; ProjExchangeQ=TargExchangeQ; |
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401 | } |
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402 | |
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403 | //G4cout<<"ProjExchangeQ "<<ProjExchangeQ<<G4endl; |
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404 | //G4cout<<"TargExchangeQ "<<TargExchangeQ<<G4endl; |
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405 | if( Ksi < 0.333333 ) |
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406 | {ProjQ1=ProjExchangeQ;} |
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407 | else if( (0.333333 <= Ksi) && (Ksi < 0.666667)) |
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408 | {ProjQ2=ProjExchangeQ;} |
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409 | else |
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410 | {ProjQ3=ProjExchangeQ;} |
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411 | |
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412 | } else |
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413 | { // Sampling exchanged quark from the target ------- |
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414 | if( Ksi < 0.333333 ) |
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415 | {TargExchangeQ = TargQ1;} |
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416 | else if( (0.333333 <= Ksi) && (Ksi < 0.666667)) |
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417 | {TargExchangeQ = TargQ2;} |
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418 | else |
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419 | {TargExchangeQ = TargQ3;} |
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420 | |
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421 | if((TargExchangeQ != ProjQ1)||(G4UniformRand()<Same)) |
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422 | { |
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423 | ProjExchangeQ = ProjQ1; ProjQ1=TargExchangeQ; TargExchangeQ=ProjExchangeQ; |
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424 | } else |
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425 | if((TargExchangeQ != ProjQ2)||(G4UniformRand()<Same)) |
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426 | { |
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427 | ProjExchangeQ = ProjQ2; ProjQ2=TargExchangeQ; TargExchangeQ=ProjExchangeQ; |
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428 | } else |
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429 | { |
---|
430 | ProjExchangeQ = ProjQ3; ProjQ3=TargExchangeQ; TargExchangeQ=ProjExchangeQ; |
---|
431 | } |
---|
432 | |
---|
433 | if( Ksi < 0.333333 ) |
---|
434 | {TargQ1=TargExchangeQ;} |
---|
435 | else if( (0.333333 <= Ksi) && (Ksi < 0.666667)) |
---|
436 | {TargQ2=TargExchangeQ;} |
---|
437 | else |
---|
438 | {TargQ3=TargExchangeQ;} |
---|
439 | |
---|
440 | } // End of sampling baryon |
---|
441 | |
---|
442 | NewProjCode = NewNucleonId(ProjQ1, ProjQ2, ProjQ3); // ***************************** |
---|
443 | |
---|
444 | //G4cout<<"ProjQ1, ProjQ2, ProjQ3 "<<ProjQ1<<" "<<ProjQ2<<" "<<ProjQ3<<" "<<NewProjCode<<G4endl; |
---|
445 | |
---|
446 | G4int TestParticleID=NewProjCode; |
---|
447 | G4ParticleDefinition* TestParticle=0; |
---|
448 | G4double TestParticleMass=DBL_MAX; |
---|
449 | |
---|
450 | TestParticle=G4ParticleTable::GetParticleTable()->FindParticle(NewProjCode); |
---|
451 | if(TestParticle) TestParticleMass=TestParticle->GetPDGMass(); |
---|
452 | |
---|
453 | if((ProjQ1==ProjQ2) && (ProjQ1==ProjQ3)) {NewProjCode +=2; ProjDeltaHasCreated=true;} |
---|
454 | else if(projectile->GetDefinition()->GetPDGiIsospin() == 3)// Projectile was Delta |
---|
455 | { if(G4UniformRand() > DeltaProbAtQuarkExchange) |
---|
456 | {NewProjCode +=2; ProjDeltaHasCreated=true;} |
---|
457 | else {NewProjCode +=0; ProjDeltaHasCreated=false;} |
---|
458 | } |
---|
459 | else // Projectile was Nucleon |
---|
460 | { |
---|
461 | if((G4UniformRand() < DeltaProbAtQuarkExchange) && (SqrtS > DeltaMass+M0target)) |
---|
462 | {NewProjCode +=2; ProjDeltaHasCreated=true;} |
---|
463 | else {NewProjCode +=0; ProjDeltaHasCreated=false;} |
---|
464 | } |
---|
465 | |
---|
466 | G4ParticleDefinition* NewTestParticle= |
---|
467 | G4ParticleTable::GetParticleTable()->FindParticle(NewProjCode); |
---|
468 | //G4cout<<"TestParticleMass NewTestParticle->GetPDGMass() "<<TestParticleMass<<" "<< NewTestParticle->GetPDGMass()<<G4endl; |
---|
469 | //if(TestParticleMass < NewTestParticle->GetPDGMass()) {NewProjCode=TestParticleID;} |
---|
470 | |
---|
471 | //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++= |
---|
472 | |
---|
473 | NewTargCode = NewNucleonId(TargQ1, TargQ2, TargQ3); // ***************************** |
---|
474 | |
---|
475 | //G4cout<<"TargQ1, TargQ2, TargQ3 "<<TargQ1<<" "<<TargQ2<<" "<<TargQ3<<" "<<NewTargCode<<G4endl; |
---|
476 | |
---|
477 | TestParticleID=NewTargCode; |
---|
478 | TestParticleMass=DBL_MAX; |
---|
479 | |
---|
480 | TestParticle=G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode); |
---|
481 | if(TestParticle) TestParticleMass=TestParticle->GetPDGMass(); |
---|
482 | |
---|
483 | if((TargQ1==TargQ2) && (TargQ1==TargQ3)) {NewTargCode +=2; TargDeltaHasCreated=true;} |
---|
484 | else if(target->GetDefinition()->GetPDGiIsospin() == 3) // Target was Delta |
---|
485 | { if(G4UniformRand() > DeltaProbAtQuarkExchange) |
---|
486 | {NewTargCode +=2; TargDeltaHasCreated=true;} |
---|
487 | else {NewTargCode +=0; TargDeltaHasCreated=false;} |
---|
488 | } |
---|
489 | else // Target was Nucleon |
---|
490 | { |
---|
491 | if((G4UniformRand() < DeltaProbAtQuarkExchange) && (SqrtS > M0projectile+DeltaMass)) |
---|
492 | {NewTargCode +=2; TargDeltaHasCreated=true;} |
---|
493 | else {NewTargCode +=0; TargDeltaHasCreated=false;} |
---|
494 | } |
---|
495 | |
---|
496 | NewTestParticle=G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode); |
---|
497 | //G4cout<<"TestParticleMass NewTestParticle->GetPDGMass() "<<TestParticleMass<<" "<< NewTestParticle->GetPDGMass()<<G4endl; |
---|
498 | //if(TestParticleMass < NewTestParticle->GetPDGMass()) {NewTargCode=TestParticleID;} |
---|
499 | |
---|
500 | //G4cout<<"NewProjCode NewTargCode "<<NewProjCode<<" "<<NewTargCode<<G4endl; |
---|
501 | //G4int Uzhi; G4cin>>Uzhi; |
---|
502 | |
---|
503 | if((absProjectilePDGcode == NewProjCode) && (absTargetPDGcode == NewTargCode)) |
---|
504 | { // Nothing was changed! It is not right!? |
---|
505 | } |
---|
506 | // Forming baryons -------------------------------------------------- |
---|
507 | if(ProjDeltaHasCreated) {ProbProjectileDiffraction=1.; ProbTargetDiffraction=0.;} |
---|
508 | if(TargDeltaHasCreated) {ProbProjectileDiffraction=0.; ProbTargetDiffraction=1.;} |
---|
509 | if(ProjDeltaHasCreated) |
---|
510 | { |
---|
511 | M0projectile= |
---|
512 | (G4ParticleTable::GetParticleTable()->FindParticle(NewProjCode))->GetPDGMass(); |
---|
513 | M0projectile2 = M0projectile * M0projectile; |
---|
514 | |
---|
515 | ProjectileDiffStateMinMass =M0projectile+210.*MeV; //210 MeV=m_pi+70 MeV |
---|
516 | ProjectileNonDiffStateMinMass=M0projectile+210.*MeV; //210 MeV=m_pi+70 MeV |
---|
517 | } |
---|
518 | |
---|
519 | // if(M0target < |
---|
520 | // (G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode))->GetPDGMass()) |
---|
521 | if(TargDeltaHasCreated) |
---|
522 | { |
---|
523 | M0target= |
---|
524 | (G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode))->GetPDGMass(); |
---|
525 | M0target2 = M0target * M0target; |
---|
526 | |
---|
527 | TargetDiffStateMinMass =M0target+210.*MeV; //210 MeV=m_pi+70 MeV; |
---|
528 | TargetNonDiffStateMinMass=M0target+210.*MeV; //210 MeV=m_pi+70 MeV; |
---|
529 | } |
---|
530 | } // End of if projectile is baryon --------------------------- |
---|
531 | |
---|
532 | //G4cout<<"At end// NewProjCode "<<NewProjCode<<G4endl; |
---|
533 | //G4cout<<"At end// NewTargCode "<<NewTargCode<<G4endl; |
---|
534 | |
---|
535 | // If we assume that final state hadrons after the charge exchange will be |
---|
536 | // in the ground states, we have to put ---------------------------------- |
---|
537 | //G4cout<<"M0pr M0tr SqS "<<M0projectile<<" "<<M0target<<" "<<SqrtS<<G4endl; |
---|
538 | |
---|
539 | PZcms2=(S*S+M0projectile2*M0projectile2+M0target2*M0target2- |
---|
540 | 2*S*M0projectile2 - 2*S*M0target2 - 2*M0projectile2*M0target2) |
---|
541 | /4./S; |
---|
542 | //G4cout<<"PZcms2 1 "<<PZcms2<<G4endl<<G4endl; |
---|
543 | if(PZcms2 < 0) {return false;} // It can be if energy is not sufficient for Delta |
---|
544 | //---------------------------------------------------------- |
---|
545 | projectile->SetDefinition( |
---|
546 | G4ParticleTable::GetParticleTable()->FindParticle(NewProjCode)); |
---|
547 | |
---|
548 | target->SetDefinition( |
---|
549 | G4ParticleTable::GetParticleTable()->FindParticle(NewTargCode)); |
---|
550 | //---------------------------------------------------------- |
---|
551 | PZcms = std::sqrt(PZcms2); |
---|
552 | |
---|
553 | Pprojectile.setPz( PZcms); |
---|
554 | Pprojectile.setE(std::sqrt(M0projectile2+PZcms2)); |
---|
555 | |
---|
556 | Ptarget.setPz( -PZcms); |
---|
557 | Ptarget.setE(std::sqrt(M0target2+PZcms2)); |
---|
558 | |
---|
559 | // ---------------------------------------------------------- |
---|
560 | |
---|
561 | if(absProjectilePDGcode < 1000) |
---|
562 | { // For projectile meson |
---|
563 | G4double Wexcit=1.-2.256*std::exp(-0.6*ProjectileRapidity); |
---|
564 | Wexcit=0.; |
---|
565 | if(G4UniformRand() > Wexcit) |
---|
566 | { // Make elastic scattering |
---|
567 | //G4cout<<"Make elastic scattering of new hadrons"<<G4endl; |
---|
568 | Pprojectile.transform(toLab); |
---|
569 | Ptarget.transform(toLab); |
---|
570 | |
---|
571 | projectile->SetTimeOfCreation(target->GetTimeOfCreation()); |
---|
572 | projectile->SetPosition(target->GetPosition()); |
---|
573 | |
---|
574 | projectile->Set4Momentum(Pprojectile); |
---|
575 | target->Set4Momentum(Ptarget); |
---|
576 | |
---|
577 | G4bool Result= theElastic->ElasticScattering (projectile,target,theParameters); |
---|
578 | return Result; |
---|
579 | } // end of if(Make elastic scattering for projectile meson?) |
---|
580 | } else |
---|
581 | { // For projectile baryon |
---|
582 | G4double Wexcit=1.-2.256*std::exp(-0.6*ProjectileRapidity); |
---|
583 | //Wexcit=0.; |
---|
584 | if(G4UniformRand() > Wexcit) |
---|
585 | { // Make elastic scattering |
---|
586 | //G4cout<<"Make elastic scattering of new hadrons"<<G4endl; |
---|
587 | Pprojectile.transform(toLab); |
---|
588 | Ptarget.transform(toLab); |
---|
589 | |
---|
590 | projectile->SetTimeOfCreation(target->GetTimeOfCreation()); |
---|
591 | projectile->SetPosition(target->GetPosition()); |
---|
592 | |
---|
593 | projectile->Set4Momentum(Pprojectile); |
---|
594 | target->Set4Momentum(Ptarget); |
---|
595 | |
---|
596 | G4bool Result= theElastic->ElasticScattering (projectile,target,theParameters); |
---|
597 | return Result; |
---|
598 | } // end of if(Make elastic scattering for projectile baryon?) |
---|
599 | } |
---|
600 | //G4cout<<"Make excitation of new hadrons"<<G4endl; |
---|
601 | } // End of charge exchange part ------------------------------ |
---|
602 | |
---|
603 | // ------------------------------------------------------------------ |
---|
604 | G4double ProbOfDiffraction=ProbProjectileDiffraction + ProbTargetDiffraction; |
---|
605 | /* |
---|
606 | G4cout<<"Excite --------------------"<<G4endl; |
---|
607 | G4cout<<"Proj "<<M0projectile<<" "<<ProjectileDiffStateMinMass<<" "<<ProjectileNonDiffStateMinMass<<G4endl; |
---|
608 | G4cout<<"Targ "<<M0target <<" "<<TargetDiffStateMinMass <<" "<<TargetNonDiffStateMinMass<<G4endl; |
---|
609 | G4cout<<"SqrtS "<<SqrtS<<G4endl; |
---|
610 | |
---|
611 | G4cout<<"Prob ProjDiff TargDiff "<<ProbProjectileDiffraction<<" "<<ProbTargetDiffraction<<" "<<ProbOfDiffraction<<G4endl; |
---|
612 | G4cout<<"Pr Y "<<Pprojectile.rapidity()<<" Tr Y "<<Ptarget.rapidity()<<G4endl; |
---|
613 | G4int Uzhi; G4cin>>Uzhi; |
---|
614 | */ |
---|
615 | /* |
---|
616 | if(ProjectileNonDiffStateMinMass + TargetNonDiffStateMinMass > SqrtS) // 24.07.10 |
---|
617 | { |
---|
618 | if(ProbOfDiffraction!=0.) |
---|
619 | { |
---|
620 | ProbProjectileDiffraction/=ProbOfDiffraction; |
---|
621 | ProbOfDiffraction=1.; |
---|
622 | } else {return false;} |
---|
623 | } |
---|
624 | |
---|
625 | */ |
---|
626 | |
---|
627 | if(ProbOfDiffraction!=0.) |
---|
628 | { |
---|
629 | ProbProjectileDiffraction/=ProbOfDiffraction; |
---|
630 | } |
---|
631 | else |
---|
632 | { |
---|
633 | ProbProjectileDiffraction=0.; |
---|
634 | } |
---|
635 | |
---|
636 | //G4cout<<"Prob ProjDiff TargDiff "<<ProbProjectileDiffraction<<" "<<ProbTargetDiffraction<<" "<<ProbOfDiffraction<<G4endl; |
---|
637 | |
---|
638 | G4double ProjectileDiffStateMinMass2 = ProjectileDiffStateMinMass * |
---|
639 | ProjectileDiffStateMinMass; |
---|
640 | G4double ProjectileNonDiffStateMinMass2 = ProjectileNonDiffStateMinMass * |
---|
641 | ProjectileNonDiffStateMinMass; |
---|
642 | |
---|
643 | G4double TargetDiffStateMinMass2 = TargetDiffStateMinMass * |
---|
644 | TargetDiffStateMinMass; |
---|
645 | G4double TargetNonDiffStateMinMass2 = TargetNonDiffStateMinMass * |
---|
646 | TargetNonDiffStateMinMass; |
---|
647 | |
---|
648 | G4double Pt2; |
---|
649 | G4double ProjMassT2, ProjMassT; |
---|
650 | G4double TargMassT2, TargMassT; |
---|
651 | G4double PMinusMin, PMinusMax; |
---|
652 | // G4double PPlusMin , PPlusMax; |
---|
653 | G4double TPlusMin , TPlusMax; |
---|
654 | G4double PMinusNew, PPlusNew, TPlusNew, TMinusNew; |
---|
655 | |
---|
656 | G4LorentzVector Qmomentum; |
---|
657 | G4double Qminus, Qplus; |
---|
658 | |
---|
659 | G4int whilecount=0; |
---|
660 | |
---|
661 | // Choose a process --------------------------- |
---|
662 | |
---|
663 | if(G4UniformRand() < ProbOfDiffraction) |
---|
664 | { |
---|
665 | if(G4UniformRand() < ProbProjectileDiffraction) |
---|
666 | { //-------- projectile diffraction --------------- |
---|
667 | //G4cout<<"projectile diffraction"<<G4endl; |
---|
668 | |
---|
669 | do { |
---|
670 | // Generate pt |
---|
671 | // if (whilecount++ >= 500 && (whilecount%100)==0) |
---|
672 | // G4cout << "G4DiffractiveExcitation::ExciteParticipants possibly looping" |
---|
673 | // << ", loop count/ maxPtSquare : " |
---|
674 | // << whilecount << " / " << maxPtSquare << G4endl; |
---|
675 | |
---|
676 | // whilecount++; |
---|
677 | if (whilecount > 1000 ) |
---|
678 | { |
---|
679 | Qmomentum=G4LorentzVector(0.,0.,0.,0.); |
---|
680 | target->SetStatus(2); return false; // Ignore this interaction |
---|
681 | }; |
---|
682 | |
---|
683 | // --------------- Check that the interaction is possible ----------- |
---|
684 | ProjMassT2=ProjectileDiffStateMinMass2; |
---|
685 | ProjMassT =ProjectileDiffStateMinMass; |
---|
686 | |
---|
687 | TargMassT2=M0target2; |
---|
688 | TargMassT =M0target; |
---|
689 | //G4cout<<"Masses "<<ProjMassT<<" "<<TargMassT<<" "<<SqrtS<<" "<<ProjMassT+TargMassT<<G4endl; |
---|
690 | PZcms2=(S*S + ProjMassT2*ProjMassT2 + TargMassT2*TargMassT2- |
---|
691 | 2.*S*ProjMassT2-2.*S*TargMassT2-2.*ProjMassT2*TargMassT2) |
---|
692 | /4./S; |
---|
693 | |
---|
694 | //G4cout<<"PZcms2 PrD"<<PZcms2<<G4endl; |
---|
695 | if(PZcms2 < 0 ) |
---|
696 | { |
---|
697 | target->SetStatus(2); |
---|
698 | return false; |
---|
699 | } |
---|
700 | maxPtSquare=PZcms2; |
---|
701 | |
---|
702 | Qmomentum=G4LorentzVector(GaussianPt(AveragePt2,maxPtSquare),0); |
---|
703 | Pt2=G4ThreeVector(Qmomentum.vect()).mag2(); |
---|
704 | |
---|
705 | ProjMassT2=ProjectileDiffStateMinMass2+Pt2; |
---|
706 | ProjMassT =std::sqrt(ProjMassT2); |
---|
707 | |
---|
708 | TargMassT2=M0target2+Pt2; |
---|
709 | TargMassT =std::sqrt(TargMassT2); |
---|
710 | |
---|
711 | PZcms2=(S*S + ProjMassT2*ProjMassT2 + TargMassT2*TargMassT2- |
---|
712 | 2.*S*ProjMassT2-2.*S*TargMassT2-2.*ProjMassT2*TargMassT2) |
---|
713 | /4./S; |
---|
714 | |
---|
715 | if(PZcms2 < 0 ) continue; |
---|
716 | PZcms =std::sqrt(PZcms2); |
---|
717 | |
---|
718 | PMinusMin=std::sqrt(ProjMassT2+PZcms2)-PZcms; |
---|
719 | PMinusMax=SqrtS-TargMassT; |
---|
720 | |
---|
721 | PMinusNew=ChooseP(PMinusMin, PMinusMax); |
---|
722 | // PMinusNew=1./sqrt(1./PMinusMin-G4UniformRand()*(1./PMinusMin-1./PMinusMax)); |
---|
723 | //PMinusNew=1./sqr(1./std::sqrt(PMinusMin)-G4UniformRand()*(1./std::sqrt(PMinusMin)-1./std::sqrt(PMinusMax))); |
---|
724 | |
---|
725 | TMinusNew=SqrtS-PMinusNew; |
---|
726 | Qminus=Ptarget.minus()-TMinusNew; |
---|
727 | TPlusNew=TargMassT2/TMinusNew; |
---|
728 | Qplus=Ptarget.plus()-TPlusNew; |
---|
729 | |
---|
730 | Qmomentum.setPz( (Qplus-Qminus)/2 ); |
---|
731 | Qmomentum.setE( (Qplus+Qminus)/2 ); |
---|
732 | |
---|
733 | } while ((Pprojectile+Qmomentum).mag2() < ProjectileDiffStateMinMass2); //|| |
---|
734 | //Repeat the sampling because there was not any excitation |
---|
735 | //((Ptarget -Qmomentum).mag2() < M0target2 )) ); |
---|
736 | } |
---|
737 | else |
---|
738 | { // -------------- Target diffraction ---------------- |
---|
739 | |
---|
740 | //G4cout<<"Target diffraction"<<G4endl; |
---|
741 | do { |
---|
742 | // Generate pt |
---|
743 | // if (whilecount++ >= 500 && (whilecount%100)==0) |
---|
744 | // G4cout << "G4DiffractiveExcitation::ExciteParticipants possibly looping" |
---|
745 | // << ", loop count/ maxPtSquare : " |
---|
746 | // << whilecount << " / " << maxPtSquare << G4endl; |
---|
747 | |
---|
748 | // whilecount++; |
---|
749 | if (whilecount > 1000 ) |
---|
750 | { |
---|
751 | Qmomentum=G4LorentzVector(0.,0.,0.,0.); |
---|
752 | target->SetStatus(2); return false; // Ignore this interaction |
---|
753 | }; |
---|
754 | //G4cout<<"Qm while "<<Qmomentum<<" "<<whilecount<<G4endl; |
---|
755 | // --------------- Check that the interaction is possible ----------- |
---|
756 | ProjMassT2=M0projectile2; |
---|
757 | ProjMassT =M0projectile; |
---|
758 | |
---|
759 | TargMassT2=TargetDiffStateMinMass2; |
---|
760 | TargMassT =TargetDiffStateMinMass; |
---|
761 | |
---|
762 | PZcms2=(S*S + ProjMassT2*ProjMassT2 + TargMassT2*TargMassT2- |
---|
763 | 2.*S*ProjMassT2-2.*S*TargMassT2-2.*ProjMassT2*TargMassT2) |
---|
764 | /4./S; |
---|
765 | |
---|
766 | //G4cout<<"PZcms2 TrD <0 "<<PZcms2<<" return"<<G4endl; |
---|
767 | if(PZcms2 < 0 ) |
---|
768 | { |
---|
769 | target->SetStatus(2); |
---|
770 | return false; |
---|
771 | } |
---|
772 | maxPtSquare=PZcms2; |
---|
773 | |
---|
774 | Qmomentum=G4LorentzVector(GaussianPt(AveragePt2,maxPtSquare),0); |
---|
775 | |
---|
776 | //G4cout<<"Qm while "<<Qmomentum<<" "<<whilecount<<G4endl; |
---|
777 | Pt2=G4ThreeVector(Qmomentum.vect()).mag2(); |
---|
778 | |
---|
779 | ProjMassT2=M0projectile2+Pt2; |
---|
780 | ProjMassT =std::sqrt(ProjMassT2); |
---|
781 | |
---|
782 | TargMassT2=TargetDiffStateMinMass2+Pt2; |
---|
783 | TargMassT =std::sqrt(TargMassT2); |
---|
784 | |
---|
785 | PZcms2=(S*S + ProjMassT2*ProjMassT2 + TargMassT2*TargMassT2- |
---|
786 | 2.*S*ProjMassT2-2.*S*TargMassT2-2.*ProjMassT2*TargMassT2) |
---|
787 | /4./S; |
---|
788 | |
---|
789 | //G4cout<<"PZcms2 <0 "<<PZcms2<<" continue"<<G4endl; |
---|
790 | if(PZcms2 < 0 ) continue; |
---|
791 | PZcms =std::sqrt(PZcms2); |
---|
792 | |
---|
793 | TPlusMin=std::sqrt(TargMassT2+PZcms2)-PZcms; |
---|
794 | TPlusMax=SqrtS-ProjMassT; |
---|
795 | |
---|
796 | TPlusNew=ChooseP(TPlusMin, TPlusMax); |
---|
797 | //TPlusNew=1./sqr(1./std::sqrt(TPlusMin)-G4UniformRand()*(1./std::sqrt(TPlusMin)-1./std::sqrt(TPlusMax))); |
---|
798 | |
---|
799 | //TPlusNew=TPlusMax; |
---|
800 | |
---|
801 | PPlusNew=SqrtS-TPlusNew; |
---|
802 | Qplus=PPlusNew-Pprojectile.plus(); |
---|
803 | PMinusNew=ProjMassT2/PPlusNew; |
---|
804 | Qminus=PMinusNew-Pprojectile.minus(); |
---|
805 | |
---|
806 | Qmomentum.setPz( (Qplus-Qminus)/2 ); |
---|
807 | Qmomentum.setE( (Qplus+Qminus)/2 ); |
---|
808 | |
---|
809 | /* |
---|
810 | G4cout<<(Pprojectile+Qmomentum).mag()<<" "<<M0projectile<<G4endl; |
---|
811 | G4bool First=(Pprojectile+Qmomentum).mag2() < M0projectile2; |
---|
812 | G4cout<<First<<G4endl; |
---|
813 | |
---|
814 | G4cout<<(Ptarget -Qmomentum).mag()<<" "<<TargetDiffStateMinMass<<" "<<TargetDiffStateMinMass2<<G4endl; |
---|
815 | G4bool Seco=(Ptarget -Qmomentum).mag2() < TargetDiffStateMinMass2; |
---|
816 | G4cout<<Seco<<G4endl; |
---|
817 | */ |
---|
818 | |
---|
819 | } while ((Ptarget -Qmomentum).mag2() < TargetDiffStateMinMass2); |
---|
820 | // Repeat the sampling because there was not any excitation |
---|
821 | // (((Pprojectile+Qmomentum).mag2() < M0projectile2 ) || //No without excitation |
---|
822 | // ((Ptarget -Qmomentum).mag2() < TargetDiffStateMinMass2)) ); |
---|
823 | //G4cout<<"Go out"<<G4endl; |
---|
824 | } // End of if(G4UniformRand() < ProbProjectileDiffraction) |
---|
825 | } |
---|
826 | else //----------- Non-diffraction process ------------ |
---|
827 | { |
---|
828 | |
---|
829 | //G4cout<<"Non-diffraction process"<<G4endl; |
---|
830 | do { |
---|
831 | // Generate pt |
---|
832 | // if (whilecount++ >= 500 && (whilecount%100)==0) |
---|
833 | // G4cout << "G4DiffractiveExcitation::ExciteParticipants possibly looping" |
---|
834 | // << ", loop count/ maxPtSquare : " |
---|
835 | // << whilecount << " / " << maxPtSquare << G4endl; |
---|
836 | |
---|
837 | // whilecount++; |
---|
838 | if (whilecount > 1000 ) |
---|
839 | { |
---|
840 | Qmomentum=G4LorentzVector(0.,0.,0.,0.); |
---|
841 | target->SetStatus(2); return false; // Ignore this interaction |
---|
842 | }; |
---|
843 | // --------------- Check that the interaction is possible ----------- |
---|
844 | ProjMassT2=ProjectileNonDiffStateMinMass2; |
---|
845 | ProjMassT =ProjectileNonDiffStateMinMass; |
---|
846 | |
---|
847 | TargMassT2=TargetNonDiffStateMinMass2; |
---|
848 | TargMassT =TargetNonDiffStateMinMass; |
---|
849 | |
---|
850 | PZcms2=(S*S + ProjMassT2*ProjMassT2 + TargMassT2*TargMassT2- |
---|
851 | 2.*S*ProjMassT2-2.*S*TargMassT2-2.*ProjMassT2*TargMassT2) |
---|
852 | /4./S; |
---|
853 | |
---|
854 | if(PZcms2 < 0 ) |
---|
855 | { |
---|
856 | target->SetStatus(2); |
---|
857 | return false; |
---|
858 | } |
---|
859 | maxPtSquare=PZcms2; |
---|
860 | Qmomentum=G4LorentzVector(GaussianPt(AveragePt2,maxPtSquare),0); |
---|
861 | Pt2=G4ThreeVector(Qmomentum.vect()).mag2(); |
---|
862 | |
---|
863 | ProjMassT2=ProjectileNonDiffStateMinMass2+Pt2; |
---|
864 | ProjMassT =std::sqrt(ProjMassT2); |
---|
865 | |
---|
866 | TargMassT2=TargetNonDiffStateMinMass2+Pt2; |
---|
867 | TargMassT =std::sqrt(TargMassT2); |
---|
868 | |
---|
869 | PZcms2=(S*S + ProjMassT2*ProjMassT2 + TargMassT2*TargMassT2- |
---|
870 | 2.*S*ProjMassT2-2.*S*TargMassT2-2.*ProjMassT2*TargMassT2) |
---|
871 | /4./S; |
---|
872 | //G4cout<<"PZcms2 ND"<<PZcms2<<G4endl; |
---|
873 | |
---|
874 | if(PZcms2 < 0 ) continue; |
---|
875 | PZcms =std::sqrt(PZcms2); |
---|
876 | |
---|
877 | PMinusMin=std::sqrt(ProjMassT2+PZcms2)-PZcms; |
---|
878 | PMinusMax=SqrtS-TargMassT; |
---|
879 | |
---|
880 | PMinusNew=ChooseP(PMinusMin, PMinusMax); |
---|
881 | |
---|
882 | Qminus=PMinusNew-Pprojectile.minus(); |
---|
883 | |
---|
884 | TPlusMin=std::sqrt(TargMassT2+PZcms2)-PZcms; |
---|
885 | // TPlusMax=SqrtS-PMinusNew; |
---|
886 | TPlusMax=SqrtS-ProjMassT; |
---|
887 | |
---|
888 | TPlusNew=ChooseP(TPlusMin, TPlusMax); |
---|
889 | |
---|
890 | Qplus=-(TPlusNew-Ptarget.plus()); |
---|
891 | |
---|
892 | Qmomentum.setPz( (Qplus-Qminus)/2 ); |
---|
893 | Qmomentum.setE( (Qplus+Qminus)/2 ); |
---|
894 | /* |
---|
895 | G4cout<<(Pprojectile+Qmomentum).mag2()<<" "<<ProjectileNonDiffStateMinMass2<<G4endl; |
---|
896 | G4cout<<(Ptarget -Qmomentum).mag2()<<" "<<TargetNonDiffStateMinMass2<<G4endl; |
---|
897 | G4int Uzhi; G4cin>>Uzhi; |
---|
898 | */ |
---|
899 | } while ( |
---|
900 | ((Pprojectile+Qmomentum).mag2() < ProjectileNonDiffStateMinMass2) || //No double Diffraction |
---|
901 | ((Ptarget -Qmomentum).mag2() < TargetNonDiffStateMinMass2 )); |
---|
902 | } |
---|
903 | |
---|
904 | Pprojectile += Qmomentum; |
---|
905 | Ptarget -= Qmomentum; |
---|
906 | |
---|
907 | //G4cout<<"Pr Y "<<Pprojectile.rapidity()<<" Tr Y "<<Ptarget.rapidity()<<G4endl; |
---|
908 | |
---|
909 | // Transform back and update SplitableHadron Participant. |
---|
910 | Pprojectile.transform(toLab); |
---|
911 | Ptarget.transform(toLab); |
---|
912 | |
---|
913 | // Calculation of the creation time --------------------- |
---|
914 | projectile->SetTimeOfCreation(target->GetTimeOfCreation()); |
---|
915 | projectile->SetPosition(target->GetPosition()); |
---|
916 | // Creation time and position of target nucleon were determined at |
---|
917 | // ReggeonCascade() of G4FTFModel |
---|
918 | // ------------------------------------------------------ |
---|
919 | |
---|
920 | //G4cout<<"Mproj "<<Pprojectile.mag()<<G4endl; |
---|
921 | //G4cout<<"Mtarg "<<Ptarget.mag()<<G4endl; |
---|
922 | projectile->Set4Momentum(Pprojectile); |
---|
923 | target->Set4Momentum(Ptarget); |
---|
924 | |
---|
925 | projectile->IncrementCollisionCount(1); |
---|
926 | target->IncrementCollisionCount(1); |
---|
927 | |
---|
928 | return true; |
---|
929 | } |
---|
930 | |
---|
931 | // --------------------------------------------------------------------- |
---|
932 | void G4DiffractiveExcitation::CreateStrings(G4VSplitableHadron * hadron, |
---|
933 | G4bool isProjectile, |
---|
934 | G4ExcitedString * &FirstString, |
---|
935 | G4ExcitedString * &SecondString, |
---|
936 | G4FTFParameters *theParameters) const |
---|
937 | { |
---|
938 | hadron->SplitUp(); |
---|
939 | G4Parton *start= hadron->GetNextParton(); |
---|
940 | if ( start==NULL) |
---|
941 | { G4cout << " G4FTFModel::String() Error:No start parton found"<< G4endl; |
---|
942 | FirstString=0; SecondString=0; |
---|
943 | return; |
---|
944 | } |
---|
945 | G4Parton *end = hadron->GetNextParton(); |
---|
946 | if ( end==NULL) |
---|
947 | { G4cout << " G4FTFModel::String() Error:No end parton found"<< G4endl; |
---|
948 | FirstString=0; SecondString=0; |
---|
949 | return; |
---|
950 | } |
---|
951 | |
---|
952 | G4LorentzVector Phadron=hadron->Get4Momentum(); |
---|
953 | |
---|
954 | G4LorentzVector Pstart(0.,0.,0.,0.); |
---|
955 | G4LorentzVector Pend(0.,0.,0.,0.); |
---|
956 | G4LorentzVector Pkink(0.,0.,0.,0.); |
---|
957 | G4LorentzVector PkinkQ1(0.,0.,0.,0.); |
---|
958 | G4LorentzVector PkinkQ2(0.,0.,0.,0.); |
---|
959 | |
---|
960 | G4int PDGcode_startQ = std::abs(start->GetDefinition()->GetPDGEncoding()); |
---|
961 | G4int PDGcode_endQ = std::abs( end->GetDefinition()->GetPDGEncoding()); |
---|
962 | |
---|
963 | //-------------------------------------------------------------------------------- |
---|
964 | G4double Wmin(0.); |
---|
965 | if(isProjectile) |
---|
966 | { |
---|
967 | Wmin=theParameters->GetProjMinDiffMass(); |
---|
968 | } else |
---|
969 | { |
---|
970 | Wmin=theParameters->GetTarMinDiffMass(); |
---|
971 | } // end of if(isProjectile) |
---|
972 | |
---|
973 | G4double W = hadron->Get4Momentum().mag(); |
---|
974 | G4double W2=W*W; |
---|
975 | |
---|
976 | G4double Pt(0.), x1(0.), x2(0.), x3(0.); |
---|
977 | G4bool Kink=false; |
---|
978 | |
---|
979 | if(W > Wmin) |
---|
980 | { // Kink is possible |
---|
981 | G4double Pt2kink=theParameters->GetPt2Kink(); |
---|
982 | Pt = std::sqrt(Pt2kink*(std::pow(W2/16./Pt2kink+1.,G4UniformRand()) - 1.)); |
---|
983 | |
---|
984 | if(Pt > 500.*MeV) |
---|
985 | { |
---|
986 | G4double Ymax = std::log(W/2./Pt + std::sqrt(W2/4./Pt/Pt - 1.)); |
---|
987 | G4double Y=Ymax*(1.- 2.*G4UniformRand()); |
---|
988 | |
---|
989 | x1=1.-Pt/W*std::exp( Y); |
---|
990 | x3=1.-Pt/W*std::exp(-Y); |
---|
991 | x2=2.-x1-x3; |
---|
992 | |
---|
993 | G4double Mass_startQ = 650.*MeV; |
---|
994 | if(PDGcode_startQ < 3) Mass_startQ = 325.*MeV; |
---|
995 | if(PDGcode_startQ == 3) Mass_startQ = 500.*MeV; |
---|
996 | if(PDGcode_startQ == 4) Mass_startQ = 1600.*MeV; |
---|
997 | |
---|
998 | G4double Mass_endQ = 650.*MeV; |
---|
999 | if(PDGcode_endQ < 3) Mass_endQ = 325.*MeV; |
---|
1000 | if(PDGcode_endQ == 3) Mass_endQ = 500.*MeV; |
---|
1001 | if(PDGcode_endQ == 4) Mass_endQ = 1600.*MeV; |
---|
1002 | |
---|
1003 | G4double P2_1=W2*x1*x1/4.-Mass_endQ *Mass_endQ; |
---|
1004 | G4double P2_3=W2*x3*x3/4.-Mass_startQ*Mass_startQ; |
---|
1005 | |
---|
1006 | G4double P2_2=sqr((2.-x1-x3)*W/2.); |
---|
1007 | |
---|
1008 | if((P2_1 <= 0.) || (P2_3 <= 0.)) |
---|
1009 | { Kink=false;} |
---|
1010 | else |
---|
1011 | { |
---|
1012 | G4double P_1=std::sqrt(P2_1); |
---|
1013 | G4double P_2=std::sqrt(P2_2); |
---|
1014 | G4double P_3=std::sqrt(P2_3); |
---|
1015 | |
---|
1016 | G4double CosT12=(P2_3-P2_1-P2_2)/(2.*P_1*P_2); |
---|
1017 | G4double CosT13=(P2_2-P2_1-P2_3)/(2.*P_1*P_3); |
---|
1018 | // Pt=P_2*std::sqrt(1.-CosT12*CosT12); // because system was rotated 11.12.09 |
---|
1019 | |
---|
1020 | if((std::abs(CosT12) >1.) || (std::abs(CosT13) > 1.)) |
---|
1021 | { Kink=false;} |
---|
1022 | else |
---|
1023 | { |
---|
1024 | Kink=true; |
---|
1025 | Pt=P_2*std::sqrt(1.-CosT12*CosT12); // because system was rotated 11.12.09 |
---|
1026 | Pstart.setPx(-Pt); Pstart.setPy(0.); Pstart.setPz(P_3*CosT13); |
---|
1027 | Pend.setPx( 0.); Pend.setPy( 0.); Pend.setPz( P_1); |
---|
1028 | Pkink.setPx( Pt); Pkink.setPy( 0.); Pkink.setPz( P_2*CosT12); |
---|
1029 | Pstart.setE(x3*W/2.); |
---|
1030 | Pkink.setE(Pkink.vect().mag()); |
---|
1031 | Pend.setE(x1*W/2.); |
---|
1032 | |
---|
1033 | G4double XkQ=GetQuarkFractionOfKink(0.,1.); |
---|
1034 | if(Pkink.getZ() > 0.) |
---|
1035 | { |
---|
1036 | if(XkQ > 0.5) {PkinkQ1=XkQ*Pkink;} else {PkinkQ1=(1.-XkQ)*Pkink;} |
---|
1037 | } else { |
---|
1038 | if(XkQ > 0.5) {PkinkQ1=(1.-XkQ)*Pkink;} else {PkinkQ1=XkQ*Pkink;} |
---|
1039 | } |
---|
1040 | |
---|
1041 | PkinkQ2=Pkink - PkinkQ1; |
---|
1042 | //------------------------- Minimizing Pt1^2+Pt3^2 ------------------------------ |
---|
1043 | |
---|
1044 | G4double Cos2Psi=(sqr(x1) -sqr(x3)+2.*sqr(x3*CosT13))/ |
---|
1045 | std::sqrt(sqr(sqr(x1)-sqr(x3)) + sqr(2.*x1*x3*CosT13)); |
---|
1046 | G4double Psi=std::acos(Cos2Psi); |
---|
1047 | |
---|
1048 | G4LorentzRotation Rotate; |
---|
1049 | if(isProjectile) {Rotate.rotateY(Psi);} |
---|
1050 | else {Rotate.rotateY(pi-Psi);} |
---|
1051 | Rotate.rotateZ(twopi*G4UniformRand()); |
---|
1052 | |
---|
1053 | Pstart*=Rotate; |
---|
1054 | Pkink*=Rotate; |
---|
1055 | PkinkQ1*=Rotate; |
---|
1056 | PkinkQ2*=Rotate; |
---|
1057 | Pend*=Rotate; |
---|
1058 | |
---|
1059 | } |
---|
1060 | } // end of if((P2_1 < 0.) || (P2_3 <0.)) |
---|
1061 | } // end of if(Pt > 500.*MeV) |
---|
1062 | } // end of if(W > Wmin) Check for a kink |
---|
1063 | |
---|
1064 | //-------------------------------------------------------------------------------- |
---|
1065 | |
---|
1066 | if(Kink) |
---|
1067 | { // Kink is possible |
---|
1068 | std::vector<G4double> QuarkProbabilitiesAtGluonSplitUp = |
---|
1069 | theParameters->GetQuarkProbabilitiesAtGluonSplitUp(); |
---|
1070 | |
---|
1071 | G4int QuarkInGluon(1); G4double Ksi=G4UniformRand(); |
---|
1072 | for(unsigned int Iq=0; Iq <3; Iq++) |
---|
1073 | { |
---|
1074 | |
---|
1075 | if(Ksi > QuarkProbabilitiesAtGluonSplitUp[Iq]) QuarkInGluon++;} |
---|
1076 | |
---|
1077 | G4Parton * Gquark = new G4Parton(QuarkInGluon); |
---|
1078 | G4Parton * Ganti_quark = new G4Parton(-QuarkInGluon); |
---|
1079 | |
---|
1080 | //------------------------------------------------------------------------------- |
---|
1081 | G4LorentzRotation toCMS(-1*Phadron.boostVector()); |
---|
1082 | |
---|
1083 | G4LorentzRotation toLab(toCMS.inverse()); |
---|
1084 | |
---|
1085 | Pstart.transform(toLab); start->Set4Momentum(Pstart); |
---|
1086 | PkinkQ1.transform(toLab); |
---|
1087 | PkinkQ2.transform(toLab); |
---|
1088 | Pend.transform(toLab); end->Set4Momentum(Pend); |
---|
1089 | |
---|
1090 | G4int absPDGcode=std::abs(hadron->GetDefinition()->GetPDGEncoding()); |
---|
1091 | |
---|
1092 | if(absPDGcode < 1000) |
---|
1093 | { // meson |
---|
1094 | if ( isProjectile ) |
---|
1095 | { // Projectile |
---|
1096 | if(end->GetDefinition()->GetPDGEncoding() > 0 ) // A quark on the end |
---|
1097 | { // Quark on the end |
---|
1098 | FirstString = new G4ExcitedString(end ,Ganti_quark, +1); |
---|
1099 | SecondString= new G4ExcitedString(Gquark,start ,+1); |
---|
1100 | Ganti_quark->Set4Momentum(PkinkQ1); |
---|
1101 | Gquark->Set4Momentum(PkinkQ2); |
---|
1102 | |
---|
1103 | } else |
---|
1104 | { // Anti_Quark on the end |
---|
1105 | FirstString = new G4ExcitedString(end ,Gquark, +1); |
---|
1106 | SecondString= new G4ExcitedString(Ganti_quark,start ,+1); |
---|
1107 | Gquark->Set4Momentum(PkinkQ1); |
---|
1108 | Ganti_quark->Set4Momentum(PkinkQ2); |
---|
1109 | |
---|
1110 | } // end of if(end->GetPDGcode() > 0) |
---|
1111 | } else { // Target |
---|
1112 | if(end->GetDefinition()->GetPDGEncoding() > 0 ) // A quark on the end |
---|
1113 | { // Quark on the end |
---|
1114 | FirstString = new G4ExcitedString(Ganti_quark,end ,-1); |
---|
1115 | SecondString= new G4ExcitedString(start ,Gquark,-1); |
---|
1116 | Ganti_quark->Set4Momentum(PkinkQ2); |
---|
1117 | Gquark->Set4Momentum(PkinkQ1); |
---|
1118 | |
---|
1119 | } else |
---|
1120 | { // Anti_Quark on the end |
---|
1121 | FirstString = new G4ExcitedString(Gquark,end ,-1); |
---|
1122 | SecondString= new G4ExcitedString(start ,Ganti_quark,-1); |
---|
1123 | Gquark->Set4Momentum(PkinkQ2); |
---|
1124 | Ganti_quark->Set4Momentum(PkinkQ1); |
---|
1125 | |
---|
1126 | } // end of if(end->GetPDGcode() > 0) |
---|
1127 | } // end of if ( isProjectile ) |
---|
1128 | } else // if(absPDGCode < 1000) |
---|
1129 | { // Baryon/AntiBaryon |
---|
1130 | if ( isProjectile ) |
---|
1131 | { // Projectile |
---|
1132 | if((end->GetDefinition()->GetParticleType() == "diquarks") && |
---|
1133 | (end->GetDefinition()->GetPDGEncoding() > 0 ) ) |
---|
1134 | { // DiQuark on the end |
---|
1135 | FirstString = new G4ExcitedString(end ,Gquark, +1); |
---|
1136 | SecondString= new G4ExcitedString(Ganti_quark,start ,+1); |
---|
1137 | Gquark->Set4Momentum(PkinkQ1); |
---|
1138 | Ganti_quark->Set4Momentum(PkinkQ2); |
---|
1139 | |
---|
1140 | } else |
---|
1141 | { // Anti_DiQuark on the end or quark |
---|
1142 | FirstString = new G4ExcitedString(end ,Ganti_quark, +1); |
---|
1143 | SecondString= new G4ExcitedString(Gquark,start ,+1); |
---|
1144 | Ganti_quark->Set4Momentum(PkinkQ1); |
---|
1145 | Gquark->Set4Momentum(PkinkQ2); |
---|
1146 | |
---|
1147 | } // end of if(end->GetPDGcode() > 0) |
---|
1148 | } else { // Target |
---|
1149 | |
---|
1150 | if((end->GetDefinition()->GetParticleType() == "diquarks") && |
---|
1151 | (end->GetDefinition()->GetPDGEncoding() > 0 ) ) |
---|
1152 | { // DiQuark on the end |
---|
1153 | FirstString = new G4ExcitedString(Gquark,end ,-1); |
---|
1154 | |
---|
1155 | SecondString= new G4ExcitedString(start ,Ganti_quark,-1); |
---|
1156 | Gquark->Set4Momentum(PkinkQ1); |
---|
1157 | Ganti_quark->Set4Momentum(PkinkQ2); |
---|
1158 | |
---|
1159 | } else |
---|
1160 | { // Anti_DiQuark on the end or Q |
---|
1161 | FirstString = new G4ExcitedString(Ganti_quark,end ,-1); |
---|
1162 | SecondString= new G4ExcitedString(start ,Gquark,-1); |
---|
1163 | Gquark->Set4Momentum(PkinkQ2); |
---|
1164 | Ganti_quark->Set4Momentum(PkinkQ1); |
---|
1165 | |
---|
1166 | } // end of if(end->GetPDGcode() > 0) |
---|
1167 | } // end of if ( isProjectile ) |
---|
1168 | } // end of if(absPDGcode < 1000) |
---|
1169 | |
---|
1170 | FirstString->SetTimeOfCreation(hadron->GetTimeOfCreation()); |
---|
1171 | FirstString->SetPosition(hadron->GetPosition()); |
---|
1172 | |
---|
1173 | SecondString->SetTimeOfCreation(hadron->GetTimeOfCreation()); |
---|
1174 | SecondString->SetPosition(hadron->GetPosition()); |
---|
1175 | |
---|
1176 | // ------------------------------------------------------------------------- |
---|
1177 | } else // End of kink is possible |
---|
1178 | { // Kink is impossible |
---|
1179 | if ( isProjectile ) |
---|
1180 | { |
---|
1181 | FirstString= new G4ExcitedString(end,start, +1); |
---|
1182 | } else { |
---|
1183 | FirstString= new G4ExcitedString(start,end, -1); |
---|
1184 | } |
---|
1185 | |
---|
1186 | SecondString=0; |
---|
1187 | |
---|
1188 | FirstString->SetTimeOfCreation(hadron->GetTimeOfCreation()); |
---|
1189 | FirstString->SetPosition(hadron->GetPosition()); |
---|
1190 | |
---|
1191 | // momenta of string ends |
---|
1192 | // |
---|
1193 | G4double Momentum=hadron->Get4Momentum().vect().mag(); |
---|
1194 | G4double Plus=hadron->Get4Momentum().e() + Momentum; |
---|
1195 | G4double Minus=hadron->Get4Momentum().e() - Momentum; |
---|
1196 | |
---|
1197 | G4ThreeVector tmp; |
---|
1198 | if(Momentum > 0.) |
---|
1199 | { |
---|
1200 | tmp.set(hadron->Get4Momentum().px(), |
---|
1201 | hadron->Get4Momentum().py(), |
---|
1202 | hadron->Get4Momentum().pz()); |
---|
1203 | tmp/=Momentum; |
---|
1204 | } |
---|
1205 | else |
---|
1206 | { |
---|
1207 | tmp.set(0.,0.,1.); |
---|
1208 | } |
---|
1209 | |
---|
1210 | G4LorentzVector Pstart(tmp,0.); |
---|
1211 | G4LorentzVector Pend(tmp,0.); |
---|
1212 | |
---|
1213 | if(isProjectile) |
---|
1214 | { |
---|
1215 | Pstart*=(-1.)*Minus/2.; |
---|
1216 | Pend *=(+1.)*Plus /2.; |
---|
1217 | } |
---|
1218 | else |
---|
1219 | { |
---|
1220 | Pstart*=(+1.)*Plus/2.; |
---|
1221 | Pend *=(-1.)*Minus/2.; |
---|
1222 | } |
---|
1223 | |
---|
1224 | Momentum=-Pstart.mag(); |
---|
1225 | Pstart.setT(Momentum); // It is assumed that quark has m=0. |
---|
1226 | |
---|
1227 | Momentum=-Pend.mag(); |
---|
1228 | Pend.setT(Momentum); // It is assumed that di-quark has m=0. |
---|
1229 | |
---|
1230 | start->Set4Momentum(Pstart); |
---|
1231 | end->Set4Momentum(Pend); |
---|
1232 | SecondString=0; |
---|
1233 | } // End of kink is impossible |
---|
1234 | |
---|
1235 | #ifdef G4_FTFDEBUG |
---|
1236 | G4cout << " generated string flavors " |
---|
1237 | << start->GetPDGcode() << " / " |
---|
1238 | << end->GetPDGcode() << G4endl; |
---|
1239 | G4cout << " generated string momenta: quark " |
---|
1240 | << start->Get4Momentum() << "mass : " |
---|
1241 | <<start->Get4Momentum().mag() << G4endl; |
---|
1242 | G4cout << " generated string momenta: Diquark " |
---|
1243 | << end ->Get4Momentum() |
---|
1244 | << "mass : " <<end->Get4Momentum().mag()<< G4endl; |
---|
1245 | G4cout << " sum of ends " << Pstart+Pend << G4endl; |
---|
1246 | G4cout << " Original " << hadron->Get4Momentum() << G4endl; |
---|
1247 | #endif |
---|
1248 | |
---|
1249 | return; |
---|
1250 | |
---|
1251 | } |
---|
1252 | |
---|
1253 | |
---|
1254 | // --------- private methods ---------------------- |
---|
1255 | |
---|
1256 | // --------------------------------------------------------------------- |
---|
1257 | G4double G4DiffractiveExcitation::ChooseP(G4double Pmin, G4double Pmax) const |
---|
1258 | { |
---|
1259 | // choose an x between Xmin and Xmax with P(x) ~ 1/x |
---|
1260 | // to be improved... |
---|
1261 | |
---|
1262 | G4double range=Pmax-Pmin; |
---|
1263 | |
---|
1264 | if ( Pmin <= 0. || range <=0. ) |
---|
1265 | { |
---|
1266 | G4cout << " Pmin, range : " << Pmin << " , " << range << G4endl; |
---|
1267 | throw G4HadronicException(__FILE__, __LINE__, "G4DiffractiveExcitation::ChooseP : Invalid arguments "); |
---|
1268 | } |
---|
1269 | |
---|
1270 | G4double P=Pmin * std::pow(Pmax/Pmin,G4UniformRand()); |
---|
1271 | return P; |
---|
1272 | } |
---|
1273 | |
---|
1274 | // --------------------------------------------------------------------- |
---|
1275 | G4ThreeVector G4DiffractiveExcitation::GaussianPt(G4double AveragePt2, |
---|
1276 | G4double maxPtSquare) const |
---|
1277 | { // @@ this method is used in FTFModel as well. Should go somewhere common! |
---|
1278 | |
---|
1279 | G4double Pt2(0.); |
---|
1280 | if(AveragePt2 <= 0.) {Pt2=0.;} |
---|
1281 | else |
---|
1282 | { |
---|
1283 | Pt2 = -AveragePt2 * std::log(1. + G4UniformRand() * |
---|
1284 | (std::exp(-maxPtSquare/AveragePt2)-1.)); |
---|
1285 | } |
---|
1286 | G4double Pt=std::sqrt(Pt2); |
---|
1287 | G4double phi=G4UniformRand() * twopi; |
---|
1288 | return G4ThreeVector (Pt*std::cos(phi), Pt*std::sin(phi), 0.); |
---|
1289 | } |
---|
1290 | |
---|
1291 | // --------------------------------------------------------------------- |
---|
1292 | G4double G4DiffractiveExcitation::GetQuarkFractionOfKink(G4double zmin, G4double zmax) const |
---|
1293 | { |
---|
1294 | G4double z, yf; |
---|
1295 | do { |
---|
1296 | z = zmin + G4UniformRand()*(zmax-zmin); |
---|
1297 | yf = z*z +sqr(1 - z); |
---|
1298 | } |
---|
1299 | while (G4UniformRand() > yf); |
---|
1300 | return z; |
---|
1301 | } |
---|
1302 | // --------------------------------------------------------------------- |
---|
1303 | void G4DiffractiveExcitation::UnpackMeson(const G4int IdPDG, G4int &Q1, G4int &Q2) const // Uzhi 7.09.09 |
---|
1304 | { |
---|
1305 | G4int absIdPDG = std::abs(IdPDG); |
---|
1306 | Q1= absIdPDG/ 100; |
---|
1307 | Q2= (absIdPDG %100)/10; |
---|
1308 | |
---|
1309 | G4int anti= 1 -2 * ( std::max( Q1, Q2 ) % 2 ); |
---|
1310 | |
---|
1311 | if (IdPDG < 0 ) anti *=-1; |
---|
1312 | Q1 *= anti; |
---|
1313 | Q2 *= -1 * anti; |
---|
1314 | return; |
---|
1315 | } |
---|
1316 | // --------------------------------------------------------------------- |
---|
1317 | void G4DiffractiveExcitation::UnpackBaryon(G4int IdPDG, |
---|
1318 | G4int &Q1, G4int &Q2, G4int &Q3) const // Uzhi 7.09.09 |
---|
1319 | { |
---|
1320 | Q1 = IdPDG / 1000; |
---|
1321 | Q2 = (IdPDG % 1000) / 100; |
---|
1322 | Q3 = (IdPDG % 100) / 10; |
---|
1323 | return; |
---|
1324 | } |
---|
1325 | // --------------------------------------------------------------------- |
---|
1326 | G4int G4DiffractiveExcitation::NewNucleonId(G4int Q1, G4int Q2, G4int Q3) const // Uzhi 7.09.09 |
---|
1327 | { |
---|
1328 | G4int TmpQ(0); |
---|
1329 | if( Q3 > Q2 ) |
---|
1330 | { |
---|
1331 | TmpQ = Q2; |
---|
1332 | Q2 = Q3; |
---|
1333 | Q3 = TmpQ; |
---|
1334 | } else if( Q3 > Q1 ) |
---|
1335 | { |
---|
1336 | TmpQ = Q1; |
---|
1337 | Q1 = Q3; |
---|
1338 | Q3 = TmpQ; |
---|
1339 | } |
---|
1340 | |
---|
1341 | if( Q2 > Q1 ) |
---|
1342 | { |
---|
1343 | TmpQ = Q1; |
---|
1344 | Q1 = Q2; |
---|
1345 | Q2 = TmpQ; |
---|
1346 | } |
---|
1347 | |
---|
1348 | G4int NewCode = Q1*1000 + Q2* 100 + Q3* 10 + 2; |
---|
1349 | return NewCode; |
---|
1350 | } |
---|
1351 | // --------------------------------------------------------------------- |
---|
1352 | G4DiffractiveExcitation::G4DiffractiveExcitation(const G4DiffractiveExcitation &) |
---|
1353 | { |
---|
1354 | throw G4HadronicException(__FILE__, __LINE__, "G4DiffractiveExcitation copy contructor not meant to be called"); |
---|
1355 | } |
---|
1356 | |
---|
1357 | |
---|
1358 | G4DiffractiveExcitation::~G4DiffractiveExcitation() |
---|
1359 | { |
---|
1360 | } |
---|
1361 | |
---|
1362 | |
---|
1363 | const G4DiffractiveExcitation & G4DiffractiveExcitation::operator=(const G4DiffractiveExcitation &) |
---|
1364 | { |
---|
1365 | throw G4HadronicException(__FILE__, __LINE__, "G4DiffractiveExcitation = operator meant to be called"); |
---|
1366 | return *this; |
---|
1367 | } |
---|
1368 | |
---|
1369 | |
---|
1370 | int G4DiffractiveExcitation::operator==(const G4DiffractiveExcitation &) const |
---|
1371 | { |
---|
1372 | throw G4HadronicException(__FILE__, __LINE__, "G4DiffractiveExcitation == operator meant to be called"); |
---|
1373 | return false; |
---|
1374 | } |
---|
1375 | |
---|
1376 | int G4DiffractiveExcitation::operator!=(const G4DiffractiveExcitation &) const |
---|
1377 | { |
---|
1378 | throw G4HadronicException(__FILE__, __LINE__, "G4DiffractiveExcitation != operator meant to be called"); |
---|
1379 | return true; |
---|
1380 | } |
---|