[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4QGSDiffractiveExcitation.cc,v 1.1 2007/05/25 07:30:47 gunter 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 | // ---------------- G4QGSDiffractiveExcitation -------------- |
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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 | // --------------------------------------------------------------------- |
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| 40 | |
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| 41 | // Modified: |
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| 42 | // 25-05-07 : G.Folger |
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| 43 | // move from management/G4DiffractiveExcitation to to qgsm/G4QGSDiffractiveExcitation |
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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 "G4QGSDiffractiveExcitation.hh" |
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| 50 | #include "G4LorentzRotation.hh" |
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| 51 | #include "G4ThreeVector.hh" |
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| 52 | #include "G4ParticleDefinition.hh" |
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| 53 | #include "G4VSplitableHadron.hh" |
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| 54 | #include "G4ExcitedString.hh" |
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| 55 | //#include "G4ios.hh" |
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| 56 | |
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| 57 | G4QGSDiffractiveExcitation::G4QGSDiffractiveExcitation() // Uzhi |
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| 58 | { |
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| 59 | } |
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| 60 | |
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| 61 | G4bool G4QGSDiffractiveExcitation:: |
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| 62 | ExciteParticipants(G4VSplitableHadron *projectile, G4VSplitableHadron *target) const |
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| 63 | { |
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| 64 | |
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| 65 | G4LorentzVector Pprojectile=projectile->Get4Momentum(); |
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| 66 | |
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| 67 | // -------------------- Projectile parameters ----------------------------------- |
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| 68 | G4bool PutOnMassShell=0; |
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| 69 | |
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| 70 | // G4double M0projectile=projectile->GetDefinition()->GetPDGMass(); // With de-excitation |
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| 71 | G4double M0projectile = Pprojectile.mag(); // Without de-excitation |
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| 72 | |
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| 73 | if(M0projectile < projectile->GetDefinition()->GetPDGMass()) |
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| 74 | { |
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| 75 | PutOnMassShell=1; |
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| 76 | M0projectile=projectile->GetDefinition()->GetPDGMass(); |
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| 77 | } |
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| 78 | |
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| 79 | G4double Mprojectile2 = M0projectile * M0projectile; |
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| 80 | |
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| 81 | G4int PDGcode=projectile->GetDefinition()->GetPDGEncoding(); |
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| 82 | G4int absPDGcode=std::abs(PDGcode); |
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| 83 | G4double ProjectileDiffCut; |
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| 84 | G4double AveragePt2; |
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| 85 | |
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| 86 | if( absPDGcode > 1000 ) //------Projectile is baryon -------- |
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| 87 | { |
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| 88 | ProjectileDiffCut = 1.1; // GeV |
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| 89 | AveragePt2 = 0.3; // GeV^2 |
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| 90 | } |
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| 91 | else if( absPDGcode == 211 || PDGcode == 111) //------Projectile is Pion ----------- |
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| 92 | { |
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| 93 | ProjectileDiffCut = 1.0; // GeV |
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| 94 | AveragePt2 = 0.3; // GeV^2 |
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| 95 | } |
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| 96 | else if( absPDGcode == 321 || PDGcode == -311) //------Projectile is Kaon ----------- |
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| 97 | { |
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| 98 | ProjectileDiffCut = 1.1; // GeV |
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| 99 | AveragePt2 = 0.3; // GeV^2 |
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| 100 | } |
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| 101 | else //------Projectile is undefined, Nucleon assumed |
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| 102 | { |
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| 103 | ProjectileDiffCut = 1.1; // GeV |
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| 104 | AveragePt2 = 0.3; // GeV^2 |
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| 105 | }; |
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| 106 | |
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| 107 | ProjectileDiffCut = ProjectileDiffCut * GeV; |
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| 108 | AveragePt2 = AveragePt2 * GeV*GeV; |
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| 109 | |
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| 110 | // -------------------- Target parameters ---------------------------------------------- |
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| 111 | G4LorentzVector Ptarget=target->Get4Momentum(); |
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| 112 | |
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| 113 | G4double M0target = Ptarget.mag(); |
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| 114 | |
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| 115 | if(M0target < target->GetDefinition()->GetPDGMass()) |
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| 116 | { |
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| 117 | PutOnMassShell=1; |
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| 118 | M0target=target->GetDefinition()->GetPDGMass(); |
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| 119 | } |
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| 120 | |
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| 121 | G4double Mtarget2 = M0target * M0target; //Ptarget.mag2(); // for AA-inter. |
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| 122 | |
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| 123 | G4double NuclearNucleonDiffCut = 1.1*GeV; |
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| 124 | |
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| 125 | G4double ProjectileDiffCut2 = ProjectileDiffCut * ProjectileDiffCut; |
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| 126 | G4double NuclearNucleonDiffCut2 = NuclearNucleonDiffCut * NuclearNucleonDiffCut; |
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| 127 | |
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| 128 | // Transform momenta to cms and then rotate parallel to z axis; |
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| 129 | |
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| 130 | G4LorentzVector Psum; |
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| 131 | Psum=Pprojectile+Ptarget; |
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| 132 | |
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| 133 | G4LorentzRotation toCms(-1*Psum.boostVector()); |
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| 134 | |
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| 135 | G4LorentzVector Ptmp=toCms*Pprojectile; |
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| 136 | |
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| 137 | if ( Ptmp.pz() <= 0. ) |
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| 138 | { |
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| 139 | // "String" moving backwards in CMS, abort collision !! |
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| 140 | //G4cout << " abort Collision!! " << G4endl; |
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| 141 | return false; |
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| 142 | } |
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| 143 | |
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| 144 | toCms.rotateZ(-1*Ptmp.phi()); |
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| 145 | toCms.rotateY(-1*Ptmp.theta()); |
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| 146 | |
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| 147 | G4LorentzRotation toLab(toCms.inverse()); |
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| 148 | |
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| 149 | Pprojectile.transform(toCms); |
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| 150 | Ptarget.transform(toCms); |
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| 151 | |
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| 152 | G4double Pt2; |
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| 153 | G4double ProjMassT2, ProjMassT; |
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| 154 | G4double TargMassT2, TargMassT; |
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| 155 | G4double PZcms2, PZcms; |
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| 156 | G4double PMinusNew, TPlusNew; |
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| 157 | |
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| 158 | G4double S=Psum.mag2(); |
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| 159 | G4double SqrtS=std::sqrt(S); |
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| 160 | |
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| 161 | if(SqrtS < 2200*MeV) {return false;} // The model cannot work for pp-interactions |
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| 162 | // at Plab < 1.3 GeV/c. Uzhi |
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| 163 | |
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| 164 | PZcms2=(S*S+Mprojectile2*Mprojectile2+Mtarget2*Mtarget2- |
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| 165 | 2*S*Mprojectile2-2*S*Mtarget2-2*Mprojectile2*Mtarget2)/4./S; |
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| 166 | if(PZcms2 < 0) |
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| 167 | {return false;} // It can be in an interaction with off-shell nuclear nucleon |
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| 168 | |
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| 169 | PZcms = std::sqrt(PZcms2); |
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| 170 | |
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| 171 | if(PutOnMassShell) |
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| 172 | { |
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| 173 | if(Pprojectile.z() > 0.) |
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| 174 | { |
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| 175 | Pprojectile.setPz( PZcms); |
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| 176 | Ptarget.setPz( -PZcms); |
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| 177 | } |
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| 178 | else |
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| 179 | { |
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| 180 | Pprojectile.setPz(-PZcms); |
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| 181 | Ptarget.setPz( PZcms); |
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| 182 | }; |
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| 183 | |
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| 184 | Pprojectile.setE(std::sqrt(Mprojectile2+ |
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| 185 | Pprojectile.x()*Pprojectile.x()+ |
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| 186 | Pprojectile.y()*Pprojectile.y()+ |
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| 187 | PZcms2)); |
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| 188 | Ptarget.setE(std::sqrt( Mtarget2 + |
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| 189 | Ptarget.x()*Ptarget.x()+ |
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| 190 | Ptarget.y()*Ptarget.y()+ |
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| 191 | PZcms2)); |
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| 192 | } |
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| 193 | |
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| 194 | G4double maxPtSquare = PZcms2; |
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| 195 | |
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| 196 | //G4cout << "Pprojectile aft boost : " << Pprojectile << G4endl; |
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| 197 | //G4cout << "Ptarget aft boost : " << Ptarget << G4endl; |
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| 198 | // G4cout << "cms aft boost : " << (Pprojectile+ Ptarget) << G4endl; |
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| 199 | |
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| 200 | // G4cout << " Projectile Xplus / Xminus : " << |
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| 201 | // Pprojectile.plus() << " / " << Pprojectile.minus() << G4endl; |
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| 202 | // G4cout << " Target Xplus / Xminus : " << |
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| 203 | // Ptarget.plus() << " / " << Ptarget.minus() << G4endl; |
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| 204 | |
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| 205 | G4LorentzVector Qmomentum; |
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| 206 | G4double Qminus, Qplus; |
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| 207 | |
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| 208 | // /* Vova |
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| 209 | G4int whilecount=0; |
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| 210 | do { |
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| 211 | // Generate pt |
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| 212 | |
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| 213 | if (whilecount++ >= 500 && (whilecount%100)==0) |
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| 214 | // G4cout << "G4QGSDiffractiveExcitation::ExciteParticipants possibly looping" |
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| 215 | // << ", loop count/ maxPtSquare : " |
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| 216 | // << whilecount << " / " << maxPtSquare << G4endl; |
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| 217 | if (whilecount > 1000 ) |
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| 218 | { |
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| 219 | Qmomentum=G4LorentzVector(0.,0.,0.,0.); |
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| 220 | return false; // Ignore this interaction |
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| 221 | } |
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| 222 | |
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| 223 | Qmomentum=G4LorentzVector(GaussianPt(AveragePt2,maxPtSquare),0); |
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| 224 | |
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| 225 | //G4cout << "generated Pt " << Qmomentum << G4endl; |
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| 226 | //G4cout << "Pprojectile with pt : " << Pprojectile+Qmomentum << G4endl; |
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| 227 | //G4cout << "Ptarget with pt : " << Ptarget-Qmomentum << G4endl; |
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| 228 | |
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| 229 | // Momentum transfer |
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| 230 | /* // Uzhi |
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| 231 | G4double Xmin = minmass / ( Pprojectile.e() + Ptarget.e() ); |
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| 232 | G4double Xmax=1.; |
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| 233 | G4double Xplus =ChooseX(Xmin,Xmax); |
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| 234 | G4double Xminus=ChooseX(Xmin,Xmax); |
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| 235 | |
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| 236 | // G4cout << " X-plus " << Xplus << G4endl; |
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| 237 | // G4cout << " X-minus " << Xminus << G4endl; |
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| 238 | |
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| 239 | G4double pt2=G4ThreeVector(Qmomentum.vect()).mag2(); |
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| 240 | G4double Qplus =-1 * pt2 / Xminus/Ptarget.minus(); |
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| 241 | G4double Qminus= pt2 / Xplus /Pprojectile.plus(); |
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| 242 | */ // Uzhi * |
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| 243 | |
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| 244 | Pt2=G4ThreeVector(Qmomentum.vect()).mag2(); |
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| 245 | ProjMassT2=Mprojectile2+Pt2; |
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| 246 | ProjMassT =std::sqrt(ProjMassT2); |
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| 247 | |
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| 248 | TargMassT2=Mtarget2+Pt2; |
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| 249 | TargMassT =std::sqrt(TargMassT2); |
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| 250 | |
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| 251 | PZcms2=(S*S+ProjMassT2*ProjMassT2+ |
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| 252 | TargMassT2*TargMassT2- |
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| 253 | 2.*S*ProjMassT2-2.*S*TargMassT2- |
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| 254 | 2.*ProjMassT2*TargMassT2)/4./S; |
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| 255 | if(PZcms2 < 0 ) {PZcms2=0;}; |
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| 256 | PZcms =std::sqrt(PZcms2); |
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| 257 | |
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| 258 | G4double PMinusMin=std::sqrt(ProjMassT2+PZcms2)-PZcms; |
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| 259 | G4double PMinusMax=SqrtS-TargMassT; |
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| 260 | |
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| 261 | PMinusNew=ChooseP(PMinusMin,PMinusMax); |
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| 262 | Qminus=PMinusNew-Pprojectile.minus(); |
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| 263 | |
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| 264 | G4double TPlusMin=std::sqrt(TargMassT2+PZcms2)-PZcms; |
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| 265 | G4double TPlusMax=SqrtS-ProjMassT; |
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| 266 | |
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| 267 | TPlusNew=ChooseP(TPlusMin, TPlusMax); |
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| 268 | Qplus=-(TPlusNew-Ptarget.plus()); |
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| 269 | |
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| 270 | Qmomentum.setPz( (Qplus-Qminus)/2 ); |
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| 271 | Qmomentum.setE( (Qplus+Qminus)/2 ); |
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| 272 | |
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| 273 | //G4cout << "Qplus / Qminus " << Qplus << " / " << Qminus<<G4endl; |
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| 274 | // G4cout << "pt2" << pt2 << G4endl; |
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| 275 | // G4cout << "Qmomentum " << Qmomentum << G4endl; |
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| 276 | // G4cout << " Masses (P/T) : " << (Pprojectile+Qmomentum).mag() << |
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| 277 | // " / " << (Ptarget-Qmomentum).mag() << G4endl; |
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| 278 | /* // Uzhi |
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| 279 | } while ( (Pprojectile+Qmomentum).mag2() <= Mprojectile2 || |
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| 280 | (Ptarget-Qmomentum).mag2() <= Mtarget2 ); |
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| 281 | */ // Uzhi * |
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| 282 | |
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| 283 | |
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| 284 | } while (( (Pprojectile+Qmomentum).mag2() < Mprojectile2 || // Uzhi No without excitation |
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| 285 | (Ptarget -Qmomentum).mag2() < Mtarget2 ) || // Uzhi |
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| 286 | ( (Pprojectile+Qmomentum).mag2() < ProjectileDiffCut2 && // Uzhi No double Diffraction |
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| 287 | (Ptarget -Qmomentum).mag2() < NuclearNucleonDiffCut2) );// Uzhi |
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| 288 | |
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| 289 | if((Ptarget-Qmomentum).mag2() < NuclearNucleonDiffCut2) // Uzhi Projectile diffraction |
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| 290 | { |
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| 291 | G4double TMinusNew=SqrtS-PMinusNew; |
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| 292 | Qminus=Ptarget.minus()-TMinusNew; |
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| 293 | TPlusNew=TargMassT2/TMinusNew; |
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| 294 | Qplus=Ptarget.plus()-TPlusNew; |
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| 295 | |
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| 296 | Qmomentum.setPz( (Qplus-Qminus)/2 ); |
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| 297 | Qmomentum.setE( (Qplus+Qminus)/2 ); |
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| 298 | } |
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| 299 | else if((Pprojectile+Qmomentum).mag2() < ProjectileDiffCut2) // Uzhi Target diffraction |
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| 300 | { |
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| 301 | G4double PPlusNew=SqrtS-TPlusNew; |
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| 302 | Qplus=PPlusNew-Pprojectile.plus(); |
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| 303 | PMinusNew=ProjMassT2/PPlusNew; |
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| 304 | Qminus=PMinusNew-Pprojectile.minus(); |
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| 305 | |
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| 306 | Qmomentum.setPz( (Qplus-Qminus)/2 ); |
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| 307 | Qmomentum.setE( (Qplus+Qminus)/2 ); |
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| 308 | }; |
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| 309 | |
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| 310 | Pprojectile += Qmomentum; |
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| 311 | Ptarget -= Qmomentum; |
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| 312 | |
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| 313 | // Vova |
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| 314 | |
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| 315 | /* |
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| 316 | Pprojectile.setPz(0.); |
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| 317 | Pprojectile.setE(SqrtS-M0target); |
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| 318 | |
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| 319 | Ptarget.setPz(0.); |
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| 320 | Ptarget.setE(M0target); |
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| 321 | */ |
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| 322 | |
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| 323 | //G4cout << "Pprojectile with Q : " << Pprojectile << G4endl; |
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| 324 | //G4cout << "Ptarget with Q : " << Ptarget << G4endl; |
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| 325 | |
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| 326 | // G4cout << "Projectile back: " << toLab * Pprojectile << G4endl; |
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| 327 | // G4cout << "Target back: " << toLab * Ptarget << G4endl; |
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| 328 | |
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| 329 | // Transform back and update SplitableHadron Participant. |
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| 330 | Pprojectile.transform(toLab); |
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| 331 | Ptarget.transform(toLab); |
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| 332 | |
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| 333 | //G4cout << "Pprojectile with Q M: " << Pprojectile<<" "<< Pprojectile.mag() << G4endl; |
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| 334 | //G4cout << "Ptarget with Q M: " << Ptarget <<" "<< Ptarget.mag() << G4endl; |
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| 335 | |
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| 336 | //G4cout << "Target mass " << Ptarget.mag() << G4endl; |
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| 337 | |
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| 338 | target->Set4Momentum(Ptarget); |
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| 339 | |
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| 340 | //G4cout << "Projectile mass " << Pprojectile.mag() << G4endl; |
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| 341 | |
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| 342 | projectile->Set4Momentum(Pprojectile); |
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| 343 | |
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| 344 | return true; |
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| 345 | } |
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| 346 | |
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| 347 | |
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| 348 | G4ExcitedString * G4QGSDiffractiveExcitation:: |
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| 349 | String(G4VSplitableHadron * hadron, G4bool isProjectile) const |
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| 350 | { |
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| 351 | hadron->SplitUp(); |
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| 352 | G4Parton *start= hadron->GetNextParton(); |
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| 353 | if ( start==NULL) |
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| 354 | { G4cout << " G4FTFModel::String() Error:No start parton found"<< G4endl; |
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| 355 | return NULL; |
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| 356 | } |
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| 357 | G4Parton *end = hadron->GetNextParton(); |
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| 358 | if ( end==NULL) |
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| 359 | { G4cout << " G4FTFModel::String() Error:No end parton found"<< G4endl; |
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| 360 | return NULL; |
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| 361 | } |
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| 362 | |
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| 363 | G4ExcitedString * string; |
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| 364 | if ( isProjectile ) |
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| 365 | { |
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| 366 | string= new G4ExcitedString(end,start, +1); |
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| 367 | } else { |
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| 368 | string= new G4ExcitedString(start,end, -1); |
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| 369 | } |
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| 370 | |
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| 371 | string->SetPosition(hadron->GetPosition()); |
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| 372 | |
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| 373 | // momenta of string ends |
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| 374 | G4double ptSquared= hadron->Get4Momentum().perp2(); |
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| 375 | G4double transverseMassSquared= hadron->Get4Momentum().plus() |
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| 376 | * hadron->Get4Momentum().minus(); |
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| 377 | |
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| 378 | |
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| 379 | G4double maxAvailMomentumSquared= |
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| 380 | sqr( std::sqrt(transverseMassSquared) - std::sqrt(ptSquared) ); |
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| 381 | |
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| 382 | G4double widthOfPtSquare = 0.25; // Uzhi <Pt^2>=0.25 ?????????????????? |
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| 383 | G4ThreeVector pt=GaussianPt(widthOfPtSquare,maxAvailMomentumSquared); |
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| 384 | |
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| 385 | G4LorentzVector Pstart(G4LorentzVector(pt,0.)); |
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| 386 | G4LorentzVector Pend; |
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| 387 | Pend.setPx(hadron->Get4Momentum().px() - pt.x()); |
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| 388 | Pend.setPy(hadron->Get4Momentum().py() - pt.y()); |
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| 389 | |
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| 390 | G4double tm1=hadron->Get4Momentum().minus() + |
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| 391 | ( Pend.perp2()-Pstart.perp2() ) / hadron->Get4Momentum().plus(); |
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| 392 | |
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| 393 | G4double tm2= std::sqrt( std::max(0., sqr(tm1) - |
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| 394 | 4. * Pend.perp2() * hadron->Get4Momentum().minus() |
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| 395 | / hadron->Get4Momentum().plus() )); |
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| 396 | |
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| 397 | G4int Sign= isProjectile ? -1 : 1; |
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| 398 | |
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| 399 | G4double endMinus = 0.5 * (tm1 + Sign*tm2); |
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| 400 | G4double startMinus= hadron->Get4Momentum().minus() - endMinus; |
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| 401 | |
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| 402 | G4double startPlus= Pstart.perp2() / startMinus; |
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| 403 | G4double endPlus = hadron->Get4Momentum().plus() - startPlus; |
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| 404 | |
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| 405 | Pstart.setPz(0.5*(startPlus - startMinus)); |
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| 406 | Pstart.setE(0.5*(startPlus + startMinus)); |
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| 407 | |
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| 408 | Pend.setPz(0.5*(endPlus - endMinus)); |
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| 409 | Pend.setE(0.5*(endPlus + endMinus)); |
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| 410 | |
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| 411 | start->Set4Momentum(Pstart); |
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| 412 | end->Set4Momentum(Pend); |
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| 413 | |
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| 414 | #ifdef G4_FTFDEBUG |
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| 415 | G4cout << " generated string flavors " << start->GetPDGcode() << " / " << end->GetPDGcode() << G4endl; |
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| 416 | G4cout << " generated string momenta: quark " << start->Get4Momentum() << "mass : " <<start->Get4Momentum().mag()<< G4endl; |
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| 417 | G4cout << " generated string momenta: Diquark " << end ->Get4Momentum() << "mass : " <<end->Get4Momentum().mag()<< G4endl; |
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| 418 | G4cout << " sum of ends " << Pstart+Pend << G4endl; |
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| 419 | G4cout << " Original " << hadron->Get4Momentum() << G4endl; |
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| 420 | #endif |
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| 421 | |
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| 422 | return string; |
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| 423 | } |
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| 424 | |
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| 425 | |
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| 426 | // --------- private methods ---------------------- |
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| 427 | |
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| 428 | G4double G4QGSDiffractiveExcitation::ChooseP(G4double Pmin, G4double Pmax) const // Uzhi |
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| 429 | { |
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| 430 | // choose an x between Xmin and Xmax with P(x) ~ 1/x |
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| 431 | |
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| 432 | // to be improved... |
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| 433 | |
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| 434 | G4double range=Pmax-Pmin; // Uzhi |
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| 435 | |
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| 436 | if ( Pmin <= 0. || range <=0. ) |
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| 437 | { |
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| 438 | G4cout << " Pmin, range : " << Pmin << " , " << range << G4endl; |
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| 439 | throw G4HadronicException(__FILE__, __LINE__, "G4QGSDiffractiveExcitation::ChooseP : Invalid arguments "); |
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| 440 | } |
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| 441 | |
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| 442 | G4double P; |
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| 443 | /* // Uzhi |
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| 444 | do { |
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| 445 | x=Xmin + G4UniformRand() * range; |
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| 446 | } while ( Xmin/x < G4UniformRand() ); |
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| 447 | */ // Uzhi |
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| 448 | |
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| 449 | P=Pmin * std::pow(Pmax/Pmin,G4UniformRand()); // Uzhi |
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| 450 | |
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| 451 | //debug-hpw cout << "DiffractiveX "<<x<<G4endl; |
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| 452 | return P; |
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| 453 | } |
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| 454 | |
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| 455 | G4ThreeVector G4QGSDiffractiveExcitation::GaussianPt(G4double AveragePt2, G4double maxPtSquare) const // Uzhi |
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| 456 | { // @@ this method is used in FTFModel as well. Should go somewhere common! |
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| 457 | |
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| 458 | G4double Pt2; |
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| 459 | /* // Uzhi |
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| 460 | do { |
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| 461 | pt2=widthSquare * std::log( G4UniformRand() ); |
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| 462 | } while ( pt2 > maxPtSquare); |
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| 463 | */ // Uzhi |
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| 464 | |
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| 465 | Pt2 = -AveragePt2 * std::log(1. + G4UniformRand() * (std::exp(-maxPtSquare/AveragePt2)-1.));// Uzhi |
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| 466 | |
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| 467 | G4double Pt=std::sqrt(Pt2); |
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| 468 | |
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| 469 | G4double phi=G4UniformRand() * twopi; |
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| 470 | |
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| 471 | return G4ThreeVector (Pt*std::cos(phi), Pt*std::sin(phi), 0.); |
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| 472 | } |
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| 473 | |
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| 474 | G4QGSDiffractiveExcitation::G4QGSDiffractiveExcitation(const G4QGSDiffractiveExcitation &) |
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| 475 | { |
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| 476 | throw G4HadronicException(__FILE__, __LINE__, "G4QGSDiffractiveExcitation copy contructor not meant to be called"); |
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| 477 | } |
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| 478 | |
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| 479 | |
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| 480 | G4QGSDiffractiveExcitation::~G4QGSDiffractiveExcitation() |
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| 481 | { |
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| 482 | } |
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| 483 | |
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| 484 | |
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| 485 | const G4QGSDiffractiveExcitation & G4QGSDiffractiveExcitation::operator=(const G4QGSDiffractiveExcitation &) |
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| 486 | { |
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| 487 | throw G4HadronicException(__FILE__, __LINE__, "G4QGSDiffractiveExcitation = operator meant to be called"); |
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| 488 | return *this; |
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| 489 | } |
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| 490 | |
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| 491 | |
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| 492 | int G4QGSDiffractiveExcitation::operator==(const G4QGSDiffractiveExcitation &) const |
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| 493 | { |
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| 494 | throw G4HadronicException(__FILE__, __LINE__, "G4QGSDiffractiveExcitation == operator meant to be called"); |
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| 495 | return false; |
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| 496 | } |
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| 497 | |
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| 498 | int G4QGSDiffractiveExcitation::operator!=(const G4QGSDiffractiveExcitation &) const |
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| 499 | { |
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| 500 | throw G4HadronicException(__FILE__, __LINE__, "G4QGSDiffractiveExcitation != operator meant to be called"); |
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| 501 | return true; |
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| 502 | } |
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