[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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[962] | 27 | // $Id: G4QDiffractionRatio.cc,v 1.9 2008/03/21 21:40:08 dennis Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[819] | 29 | // |
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| 30 | // |
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| 31 | // G4 Physics class: G4QDiffractionRatio for N+A elastic cross sections |
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| 32 | // Created: M.V. Kossov, CERN/ITEP(Moscow), 10-OCT-01 |
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| 33 | // The last update: M.V. Kossov, CERN/ITEP (Moscow) 15-Oct-06 |
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| 34 | // |
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| 35 | //================================================================================ |
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| 36 | |
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| 37 | //#define debug |
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| 38 | //#define pdebug |
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| 39 | //#define fdebug |
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| 40 | //#define nandebug |
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| 41 | |
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| 42 | #include "G4QDiffractionRatio.hh" |
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| 43 | |
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| 44 | // Returns Pointer to the G4VQCrossSection class |
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| 45 | G4QDiffractionRatio* G4QDiffractionRatio::GetPointer() |
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| 46 | { |
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| 47 | static G4QDiffractionRatio theRatios; // *** Static body of the Diffraction Ratio *** |
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| 48 | return &theRatios; |
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| 49 | } |
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| 50 | |
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| 51 | // Calculation of pair(QuasiFree/Inelastic,QuasiElastic/QuasiFree) |
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| 52 | G4double G4QDiffractionRatio::GetRatio(G4double pIU, G4int pPDG, G4int tgZ, G4int tgN) |
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| 53 | { |
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| 54 | static const G4double mNeut= G4QPDGCode(2112).GetMass(); |
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| 55 | static const G4double mProt= G4QPDGCode(2212).GetMass(); |
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| 56 | static const G4double mN=.5*(mNeut+mProt); |
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| 57 | static const G4double dmN=mN+mN; |
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| 58 | static const G4double mN2=mN*mN; |
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| 59 | // Table parameters |
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| 60 | static const G4int nps=100; // Number of steps in the R(s) LinTable |
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| 61 | static const G4int mps=nps+1; // Number of elements in the R(s) LinTable |
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| 62 | static const G4double sma=6.; // The first LinTabEl(sqs=0)=1., sqs>sma -> logTab |
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| 63 | static const G4double ds=sma/nps; // Step of the linear Table |
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| 64 | static const G4int nls=150; // Number of steps in the R(lns) logTable |
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| 65 | static const G4int mls=nls+1; // Number of elements in the R(lns) logTable |
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| 66 | static const G4double lsi=1.79; // The min ln(sqs) logTabEl(sqs=5.99 < sma=6.) |
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| 67 | static const G4double lsa=8.; // The max ln(sqs) logTabEl(sqs=5.99 - 2981 GeV) |
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| 68 | static const G4double mi=std::exp(lsi);// The min s of logTabEl(~ 5.99 GeV) |
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| 69 | static const G4double ms=std::exp(lsa);// The max s of logTabEl(~ 2981 GeV) |
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| 70 | static const G4double dl=(lsa-lsi)/nls;// Step of the logarithmic Table |
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| 71 | static const G4double edl=std::exp(dl);// Multiplication step of the logarithmic Table |
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| 72 | static const G4double toler=.0001; // Tolarence (GeV) defining the same sqs |
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| 73 | static G4double lastS=0.; // Last sqs value for which R was calculated |
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| 74 | static G4double lastR=0.; // Last ratio R which was calculated |
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| 75 | // Local Associative Data Base: |
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| 76 | static std::vector<G4int> vA; // Vector of calculated A |
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| 77 | static std::vector<G4double> vH; // Vector of max sqs initialized in the LinTable |
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| 78 | static std::vector<G4int> vN; // Vector of topBin number initialized in LinTable |
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| 79 | static std::vector<G4double> vM; // Vector of relMax ln(sqs) initialized in LogTable |
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| 80 | static std::vector<G4int> vK; // Vector of topBin number initialized in LogTable |
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| 81 | static std::vector<G4double*> vT; // Vector of pointers to LinTable in C++ heap |
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| 82 | static std::vector<G4double*> vL; // Vector of pointers to LogTable in C++ heap |
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| 83 | // Last values of the Associative Data Base: |
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| 84 | static G4int lastPDG=0; // Last PDG for which R was calculated (now indep) |
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| 85 | static G4int lastA=0; // theLast of calculated A |
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| 86 | static G4double lastH=0.; // theLast of max sqs initialized in the LinTable |
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| 87 | static G4int lastN=0; // theLast of topBin number initialized in LinTable |
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| 88 | static G4double lastM=0.; // theLast of relMax ln(sqs) initialized in LogTab. |
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| 89 | static G4int lastK=0; // theLast of topBin number initialized in LogTable |
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| 90 | static G4double* lastT=0; // theLast of pointer to LinTable in the C++ heap |
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| 91 | static G4double* lastL=0; // theLast of pointer to LogTable in the C++ heap |
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| 92 | // LogTable is created only if necessary. R(sqs>2981GeV) calcul by formula for any nuclei |
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| 93 | G4int A=tgN+tgZ; |
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| 94 | if(pIU<toler || A<1) return 1.; // Fake use of toler as non zero number |
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| 95 | if(A>238) |
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| 96 | { |
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| 97 | G4cout<<"-*-Warning-*-G4QuasiFreeRatio::GetRatio: A="<<A<<">238, return zero"<<G4endl; |
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| 98 | return 0.; |
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| 99 | } |
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| 100 | lastPDG=pPDG; // @@ at present ratio is PDG independent @@ |
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| 101 | // Calculate sqs |
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| 102 | G4double pM=G4QPDGCode(pPDG).GetMass()*.001; // Projectile mass in GeV |
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| 103 | G4double pM2=pM*pM; |
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| 104 | G4double mom=pIU/gigaelectronvolt; // Projectile momentum in GeV |
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| 105 | G4double s=std::sqrt(mN2+pM2+dmN*std::sqrt(pM2+mom*mom)); |
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| 106 | G4int nDB=vA.size(); // A number of nuclei already initialized in AMDB |
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| 107 | // if(nDB && lastA==A && std::fabs(s-lastS)<toler) return lastR; |
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| 108 | if(nDB && lastA==A && s==lastS) return lastR; // VI do not use toler |
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| 109 | if(s>ms) |
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| 110 | { |
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| 111 | lastR=CalcDiff2Prod_Ratio(s,A); // @@ Probably user ought to be notified about bigS |
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| 112 | return lastR; |
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| 113 | } |
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| 114 | G4bool found=false; |
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| 115 | G4int i=-1; |
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| 116 | if(nDB) for (i=0; i<nDB; i++) if(A==vA[i]) // Sirch for this A in AMDB |
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| 117 | { |
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| 118 | found=true; // The A value is found |
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| 119 | break; |
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| 120 | } |
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| 121 | if(!nDB || !found) // Create new line in the AMDB |
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| 122 | { |
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| 123 | lastA = A; |
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| 124 | lastT = new G4double[mps]; // Create the linear Table |
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| 125 | lastN = static_cast<int>(s/ds)+1; // MaxBin to be initialized |
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| 126 | if(lastN>nps) |
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| 127 | { |
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| 128 | lastN=nps; |
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| 129 | lastH=sma; |
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| 130 | } |
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| 131 | else lastH = lastN*ds; // Calculate max initialized s for LinTab |
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| 132 | G4double sv=0; |
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| 133 | lastT[0]=1.; |
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| 134 | for(G4int j=1; j<=lastN; j++) // Calculate LinTab values |
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| 135 | { |
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| 136 | sv+=ds; |
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| 137 | lastT[j]=CalcDiff2Prod_Ratio(sv,A); |
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| 138 | } |
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| 139 | if(s>sma) // Initialize the logarithmic Table |
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| 140 | { |
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| 141 | lastL=new G4double[mls]; // Create the logarithmic Table |
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| 142 | G4double ls=std::log(s); |
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| 143 | lastK = static_cast<int>((ls-lsi)/dl)+1; // MaxBin to be initialized in LogTaB |
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| 144 | if(lastK>nls) |
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| 145 | { |
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| 146 | lastK=nls; |
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| 147 | lastM=lsa-lsi; |
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| 148 | } |
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| 149 | else lastM = lastK*dl; // Calculate max initialized ln(s)-lsi for LogTab |
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| 150 | sv=mi; |
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| 151 | for(G4int j=0; j<=lastK; j++) // Calculate LogTab values |
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| 152 | { |
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| 153 | lastL[j]=CalcDiff2Prod_Ratio(sv,A); |
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| 154 | if(j!=lastK) sv*=edl; |
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| 155 | } |
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| 156 | } |
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| 157 | else // LogTab is not initialized |
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| 158 | { |
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| 159 | lastL = 0; |
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| 160 | lastK = 0; |
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| 161 | lastM = 0.; |
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| 162 | } |
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| 163 | i++; // Make a new record to AMDB and position on it |
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| 164 | vA.push_back(lastA); |
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| 165 | vH.push_back(lastH); |
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| 166 | vN.push_back(lastN); |
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| 167 | vM.push_back(lastM); |
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| 168 | vK.push_back(lastK); |
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| 169 | vT.push_back(lastT); |
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| 170 | vL.push_back(lastL); |
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| 171 | } |
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| 172 | else // The A value was found in AMDB |
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| 173 | { |
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| 174 | lastA=vA[i]; |
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| 175 | lastH=vH[i]; |
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| 176 | lastN=vN[i]; |
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| 177 | lastM=vM[i]; |
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| 178 | lastK=vK[i]; |
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| 179 | lastT=vT[i]; |
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| 180 | lastL=vL[i]; |
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| 181 | if(s>lastM) // At least LinTab must be updated |
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| 182 | { |
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| 183 | G4int nextN=lastN+1; // The next bin to be initialized |
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| 184 | if(lastN<nps) |
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| 185 | { |
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| 186 | lastN = static_cast<int>(s/ds)+1;// MaxBin to be initialized |
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| 187 | if(lastN>nps) |
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| 188 | { |
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| 189 | lastN=nps; |
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| 190 | lastH=sma; |
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| 191 | } |
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| 192 | else lastH = lastN*ds; // Calculate max initialized s for LinTab |
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| 193 | G4double sv=lastM; |
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| 194 | for(G4int j=nextN; j<=lastN; j++)// Calculate LogTab values |
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| 195 | { |
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| 196 | sv+=ds; |
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| 197 | lastT[j]=CalcDiff2Prod_Ratio(sv,A); |
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| 198 | } |
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| 199 | } // End of LinTab update |
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| 200 | if(lastN>=nextN) |
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| 201 | { |
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| 202 | vH[i]=lastH; |
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| 203 | vN[i]=lastN; |
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| 204 | } |
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| 205 | G4int nextK=lastK+1; |
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| 206 | if(s>sma && lastK<nls) // LogTab must be updated |
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| 207 | { |
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| 208 | G4double sv=std::exp(lastM+lsi); // Define starting poit (lastM will be changed) |
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| 209 | G4double ls=std::log(s); |
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| 210 | lastK = static_cast<int>((ls-lsi)/dl)+1; // MaxBin to be initialized in LogTaB |
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| 211 | if(lastK>nls) |
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| 212 | { |
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| 213 | lastK=nls; |
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| 214 | lastM=lsa-lsi; |
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| 215 | } |
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| 216 | else lastM = lastK*dl; // Calculate max initialized ln(s)-lsi for LogTab |
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| 217 | for(G4int j=nextK; j<=lastK; j++)// Calculate LogTab values |
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| 218 | { |
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| 219 | sv*=edl; |
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| 220 | lastL[j]=CalcDiff2Prod_Ratio(sv,A); |
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| 221 | } |
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| 222 | } // End of LogTab update |
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| 223 | if(lastK>=nextK) |
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| 224 | { |
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| 225 | vM[i]=lastM; |
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| 226 | vK[i]=lastK; |
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| 227 | } |
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| 228 | } |
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| 229 | } |
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| 230 | // Now one can use tabeles to calculate the value |
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| 231 | if(s<sma) // Use linear table |
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| 232 | { |
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| 233 | G4int n=static_cast<int>(s/ds); // Low edge number of the bin |
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| 234 | G4double d=s-n*ds; // Linear shift |
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| 235 | G4double v=lastT[n]; // Base |
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| 236 | lastR=v+d*(lastT[n+1]-v)/ds; // Result |
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| 237 | } |
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| 238 | else // Use log table |
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| 239 | { |
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| 240 | G4double ls=std::log(s)-lsi; // ln(s)-l_min |
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| 241 | G4int n=static_cast<int>(ls/dl); // Low edge number of the bin |
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| 242 | G4double d=ls-n*dl; // Log shift |
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| 243 | G4double v=lastL[n]; // Base |
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| 244 | lastR=v+d*(lastL[n+1]-v)/dl; // Result |
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| 245 | } |
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| 246 | if(lastR<0.) lastR=0.; |
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| 247 | if(lastR>1.) lastR=1.; |
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| 248 | return lastR; |
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| 249 | } // End of CalcDiff2Prod_Ratio |
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| 250 | |
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| 251 | // Calculate Diffraction/Production Ratio as a function of total sq(s)(hN) (in GeV), A=Z+N |
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| 252 | G4double G4QDiffractionRatio::CalcDiff2Prod_Ratio(G4double s, G4int A) |
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| 253 | { |
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| 254 | static G4int mA=0; |
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| 255 | static G4double S=.1; // s=SQRT(M_N^2+M_h^2+2*E_h*M_N) |
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| 256 | static G4double R=0.; // Prototype of the result |
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| 257 | static G4double p1=0.; |
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| 258 | static G4double p2=0.; |
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| 259 | static G4double p4=0.; |
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| 260 | static G4double p5=0.; |
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| 261 | static G4double p6=0.; |
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| 262 | static G4double p7=0.; |
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| 263 | if(s<=0. || A<=1) return 0.; |
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| 264 | if(A!=mA && A!=1) |
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| 265 | { |
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| 266 | mA=A; |
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| 267 | G4double a=mA; |
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| 268 | G4double sa=std::sqrt(a); |
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| 269 | G4double a2=a*a; |
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| 270 | G4double a3=a2*a; |
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| 271 | G4double a4=a3*a; |
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| 272 | G4double a5=a4*a; |
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| 273 | G4double a6=a5*a; |
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| 274 | G4double a7=a6*a; |
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| 275 | G4double a8=a7*a; |
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| 276 | G4double a11=a8*a3; |
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| 277 | G4double a12=a8*a4; |
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| 278 | G4double p=std::pow(a,0.37); |
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| 279 | p1=(.023*p+3.5/a3+2.1e6/a12+4.e-14*a5)/(1.+7.6e-4*a*sa+2.15e7/a11); |
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| 280 | p2=(1.42*std::pow(a,0.61)+1.6e5/a8+4.5e-8*a4)/(1.+4.e-8*a4+1.2e4/a6); |
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| 281 | G4double q=std::pow(a,0.7); |
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| 282 | p4=(.036/q+.0009*q)/(1.+6./a3+1.e-7*a3); |
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| 283 | p5=1.3*std::pow(a,0.1168)/(1.+1.2e-8*a3); |
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| 284 | p6=.00046*(a+11830./a2); |
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| 285 | p7=1./(1.+6.17/a2+.00406*a); |
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| 286 | } |
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| 287 | else if(A==1 && mA!=1) |
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| 288 | { |
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| 289 | p1=.0315; |
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| 290 | p2=.73417; |
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| 291 | p4=.01109; |
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| 292 | p5=1.0972; |
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| 293 | p6=.065787; |
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| 294 | p7=.62976; |
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| 295 | } |
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| 296 | else if(std::fabs(s-S)/S<.0001) return R; |
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| 297 | G4double s2=s*s; |
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| 298 | G4double s4=s2*s2; |
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| 299 | G4double dl=std::log(s)-p5; |
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| 300 | R=1./(1.+1./(p1+p2/s4+p4*dl*dl/(1.+p6*std::pow(s,p7)))); |
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| 301 | return R; |
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| 302 | } // End of CalcQF2IN_Ratio |
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| 303 | |
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| 304 | |
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| 305 | G4QHadronVector* G4QDiffractionRatio::TargFragment(G4int pPDG, G4LorentzVector p4M, |
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| 306 | G4int tgZ, G4int tgN) |
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| 307 | { |
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| 308 | static const G4double pFm= 0.; // Fermi momentum in MeV (delta function) |
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| 309 | //static const G4double pFm= 250.; // Fermi momentum in MeV (delta function) |
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| 310 | static const G4double pFm2= pFm*pFm; // Squared Fermi momentum in MeV^2 (delta function) |
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| 311 | static const G4double mPi0= G4QPDGCode(111).GetMass(); // pi0 mass (MeV =min diffraction) |
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| 312 | //static const G4double mPi= G4QPDGCode(211).GetMass(); // pi+- mass (MeV) |
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| 313 | static const G4double mNeut= G4QPDGCode(2112).GetMass(); |
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| 314 | static const G4double mNeut2=mNeut*mNeut; |
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| 315 | static const G4double dmNeut=mNeut+mNeut; |
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| 316 | static const G4double mProt= G4QPDGCode(2212).GetMass(); |
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| 317 | static const G4double mProt2=mProt*mProt; |
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| 318 | static const G4double dmProt=mProt+mProt; |
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| 319 | static const G4double maxDM=mProt*12.; |
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| 320 | //static const G4double mLamb= G4QPDGCode(3122).GetMass(); |
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| 321 | //static const G4double mSigZ= G4QPDGCode(3212).GetMass(); |
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| 322 | //static const G4double mSigM= G4QPDGCode(3112).GetMass(); |
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| 323 | //static const G4double mSigP= G4QPDGCode(3222).GetMass(); |
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| 324 | //static const G4double eps=.003; |
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| 325 | static const G4double third=1./3.; |
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| 326 | // |
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| 327 | G4LorentzVector pr4M=p4M/megaelectronvolt; // Convert 4-momenta in MeV (keep p4M) |
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| 328 | // prepare the DONOTHING answer |
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| 329 | G4QHadronVector* ResHV = new G4QHadronVector;// !! MUST BE DESTROYE/DDELETER by CALLER !! |
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| 330 | G4QHadron* hadron = new G4QHadron(pPDG,p4M); // Hadron for not scattered projectile |
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| 331 | ResHV->push_back(hadron); // It must be cleaned up for real scattering sec |
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| 332 | // @@ diffraction is simulated as noncoherent (coherent is small) |
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| 333 | G4int tgA=tgZ+tgN; // A of the target |
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| 334 | G4int tPDG=90000000+tgZ*1000+tgN; // PDG code of the targetNucleus/recoilNucleus |
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| 335 | G4double tgM=G4QPDGCode(tPDG).GetMass(); // Mass of the target nucleus |
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| 336 | G4int rPDG=2112; // prototype of PDG code of the recoiled nucleon |
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| 337 | if(tgA*G4UniformRand()>tgN) // Substitute by a proton |
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| 338 | { |
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| 339 | rPDG=2212; // PDG code of the recoiled QF nucleon |
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| 340 | tPDG-=1000; // PDG code of the recoiled nucleus |
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| 341 | } |
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| 342 | else tPDG-=1; // PDG code of the recoiled nucleus |
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| 343 | G4double tM=G4QPDGCode(tPDG).GetMass(); // Mass of the recoiled nucleus |
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| 344 | G4double tE=std::sqrt(tM*tM+pFm2); // Free energy of the recoil nucleus |
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| 345 | G4ThreeVector tP=pFm*G4RandomDirection();// 3-mom of the recoiled nucleus |
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| 346 | G4LorentzVector t4M(tP,tE); // 4M of the recoil nucleus |
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| 347 | G4LorentzVector tg4M(0.,0.,0.,tgM); // Full target 4-momentum |
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| 348 | G4LorentzVector N4M=tg4M-t4M; // 4-mom of Quasi-free target nucleon |
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| 349 | G4LorentzVector tot4M=N4M+p4M; // total momentum of quasi-free diffraction |
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| 350 | G4double mT=mNeut; // Prototype of mass of QF nucleon |
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| 351 | G4double mT2=mNeut2; // Squared mass of a free nucleon to be excited |
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| 352 | G4double dmT=dmNeut; // Doubled mass |
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| 353 | G4int Z=0; // Prototype of the isotope Z |
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| 354 | G4int N=1; // Prototype of the Isotope N |
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| 355 | if(rPDG==2212) // Correct it, if this is a proton |
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| 356 | { |
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| 357 | mT=mProt; // Prototype of mass of QF nucleon to be excited |
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| 358 | mT2=mProt2; // Squared mass of the free nucleon |
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| 359 | dmT=dmProt; // Doubled mass |
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| 360 | Z=1; // Z of the isotope |
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| 361 | N=0; // N of the Isotope |
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| 362 | } |
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| 363 | G4double mP2=pr4M.m2(); // Squared mass of the projectile |
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| 364 | if(mP2<0.) mP2=0.; // Can be a problem for photon (m_min = 2*m_pi0) |
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| 365 | G4double s=tot4M.m2(); // @@ Check <0 ... |
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| 366 | G4double E=(s-mT2-mP2)/dmT; // Effective interactinEnergy (virt.nucl.target) |
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| 367 | G4double E2=E*E; |
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| 368 | if(E<0. || E2<mP2) |
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| 369 | { |
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| 370 | #ifdef pdebug |
---|
| 371 | G4cerr<<"_Warning-G4DifR::TFra:<NegativeEnergy>E="<<E<<",E2="<<E2<<"<M2="<<mP2<<G4endl; |
---|
| 372 | #endif |
---|
| 373 | return ResHV; // Do Nothing Action |
---|
| 374 | } |
---|
| 375 | G4double mP=std::sqrt(mP2); // Calculate mass of the projectile (to be exc.) |
---|
| 376 | if(mP<.1)mP=mPi0; // For photons minDiffraction is gam+P->P+Pi0 |
---|
| 377 | G4double dmP=mP+mP; // Doubled mass of the projectile |
---|
| 378 | G4double mMin=mP+mPi0; // Minimum diffractive mass |
---|
| 379 | G4double tA=tgA; // Real A of the target |
---|
| 380 | G4double sA=5./std::pow(tA,third); // Mass-screaning |
---|
| 381 | //mMin+=mPi0+G4UniformRand()*(mP*sA+mPi0); // *Experimental* |
---|
| 382 | mMin+=G4UniformRand()*(mP*sA+mPi0); // *Experimental* |
---|
| 383 | G4double ss=std::sqrt(s); // CM compound mass (sqrt(s)) |
---|
| 384 | G4double mMax=ss-mP; // Maximum diffraction mass of the projectile |
---|
| 385 | if(mMax>maxDM) mMax=maxDM; // Restriction to avoid too big masses |
---|
| 386 | if(mMin>=mMax) |
---|
| 387 | { |
---|
| 388 | #ifdef pdebug |
---|
| 389 | G4cerr<<"Warning-G4DifR::TFra:ZeroDiffractionMRange, mi="<<mMin<<", ma="<<mMax<<G4endl; |
---|
| 390 | #endif |
---|
| 391 | return ResHV; // Do Nothing Action |
---|
| 392 | } |
---|
| 393 | G4double R = G4UniformRand(); |
---|
| 394 | G4double mDif=std::exp(R*std::log(mMax)+(1.-R)*std::log(mMin)); // Low Mass Approximation |
---|
| 395 | G4double mDif2=mDif*mDif; |
---|
| 396 | G4double ds=s-mP2-mDif2; |
---|
| 397 | G4double e=ds/dmP; |
---|
| 398 | G4double P=std::sqrt(e*e-mDif2); // Momentum in pseudo laboratory system |
---|
| 399 | G4VQCrossSection* CSmanager=G4QElasticCrossSection::GetPointer(); |
---|
| 400 | #ifdef debug |
---|
| 401 | G4cout<<"G4QDiffR::TargFrag:Before XS, P="<<P<<",Z="<<Z<<",N="<<N<<",PDG="<<pPDG<<G4endl; |
---|
| 402 | #endif |
---|
| 403 | // @@ Temporary NN t-dependence for all hadrons |
---|
| 404 | if(pPDG>3400 || pPDG<-3400) G4cout<<"-Warning-G4QDifR::Fragment: pPDG="<<pPDG<<G4endl; |
---|
| 405 | G4int PDG=2212; // *TMP* instead of pPDG |
---|
| 406 | G4double xSec=CSmanager->GetCrossSection(false, P, tgZ, tgN, PDG);// Rec.CrossSect *TMP* |
---|
| 407 | //G4double xSec=CSmanager->GetCrossSection(false, P, tgZ, tgN, pPDG); // Rec.CrossSect |
---|
| 408 | #ifdef debug |
---|
| 409 | G4cout<<"G4QDiffRat::TargFragment:pPDG="<<pPDG<<",P="<<P<<",CS="<<xSec/millibarn<<G4endl; |
---|
| 410 | #endif |
---|
| 411 | #ifdef nandebug |
---|
| 412 | if(xSec>0. || xSec<0. || xSec==0); |
---|
| 413 | else G4cout<<"***NAN***G4QDiffractionRatio::TargFragment:xSec="<<xSec/millibarn<<G4endl; |
---|
| 414 | #endif |
---|
| 415 | // @@ check a possibility to separate p, n, or alpha (!) |
---|
| 416 | if(xSec <= 0.) // The cross-section iz 0 -> Do Nothing |
---|
| 417 | { |
---|
| 418 | #ifdef pdebug |
---|
| 419 | G4cerr<<"-Warning-G4QDiffrRatio::TargFragment:**Zero XS**PDG="<<pPDG<<",P="<<P<<G4endl; |
---|
| 420 | #endif |
---|
| 421 | return ResHV; //Do Nothing Action |
---|
| 422 | } |
---|
| 423 | //G4double t=CSmanager->GetExchangeT(tgZ,tgN,pPDG); // functional randomized -t (MeV^2) |
---|
| 424 | G4double maxt=(ds*ds-4*mP2*mDif2)/s; // maximum possible -t |
---|
| 425 | G4double tsl=140000.; // slope in MeV^2 |
---|
| 426 | G4double t=-std::log(G4UniformRand())*tsl; |
---|
| 427 | #ifdef pdebug |
---|
| 428 | G4cout<<"G4QDifR::TFra:ph="<<pPDG<<",P="<<P<<",X="<<xSec<<",t="<<t<<"<"<<maxt<<G4endl; |
---|
| 429 | #endif |
---|
| 430 | #ifdef nandebug |
---|
| 431 | if(mint>-.0000001); // To make the Warning for NAN |
---|
| 432 | else G4cout<<"******G4QDiffractionRatio::TargFragment: -t="<<mint<<G4endl; |
---|
| 433 | #endif |
---|
| 434 | G4double rt=t/maxt; |
---|
| 435 | G4double cost=1.-rt-rt; // cos(theta) in CMS |
---|
| 436 | #ifdef ppdebug |
---|
| 437 | G4cout<<"G4QDiffraRatio::TargFragment: -t="<<t<<", maxt="<<maxt<<", cost="<<cost<<G4endl; |
---|
| 438 | #endif |
---|
| 439 | if(cost>1. || cost<-1. || !(cost>-1. || cost<=1.)) |
---|
| 440 | { |
---|
| 441 | if (cost>1.) cost=1.; |
---|
| 442 | else if(cost<-1.) cost=-1.; |
---|
| 443 | else |
---|
| 444 | { |
---|
| 445 | G4cerr<<"G4QDiffRat::TargFragm: *NAN* cost="<<cost<<",t="<<t<<",tmax="<<maxt<<G4endl; |
---|
| 446 | return ResHV; // Do Nothing Action |
---|
| 447 | } |
---|
| 448 | } |
---|
| 449 | G4LorentzVector r4M=G4LorentzVector(0.,0.,0.,mP); // 4mom of the leading nucleon |
---|
| 450 | G4LorentzVector d4M=G4LorentzVector(0.,0.,0.,mDif); // 4mom of the diffract. Quasmon |
---|
| 451 | G4LorentzVector dir4M=tot4M-G4LorentzVector(0.,0.,0.,(tot4M.e()-mT)*.01); |
---|
| 452 | if(!G4QHadron(tot4M).RelDecayIn2(r4M, d4M, dir4M, cost, cost)) |
---|
| 453 | { |
---|
| 454 | G4cerr<<"G4QDifR::TFr:M="<<tot4M.m()<<",T="<<mT<<",D="<<mDif<<",T+D="<<mT+mDif<<G4endl; |
---|
| 455 | //G4Exception("G4QDifR::Fragm:","009",FatalException,"Decay of ElasticComp"); |
---|
| 456 | return ResHV; // Do Nothing Action |
---|
| 457 | } |
---|
| 458 | #ifdef debug |
---|
| 459 | G4cout<<"G4QDifRat::TargFragm:d4M="<<d4M<<"+r4M="<<r4M<<"="<<d4M+r4M<<"="<<tot4M<<G4endl; |
---|
| 460 | #endif |
---|
| 461 | // Now everything is ready for fragmentation and DoNothing projHadron must be wiped out |
---|
| 462 | ResHV->pop_back(); // Clean up pointer to the fake (doNothing) projectile |
---|
| 463 | delete hadron; // Delete the fake (doNothing) projectile hadron |
---|
| 464 | hadron = new G4QHadron(pPDG,r4M); // Hadron for the recoil nucleon |
---|
| 465 | ResHV->push_back(hadron); // Fill the recoil nucleon |
---|
| 466 | #ifdef debug |
---|
| 467 | G4cout<<"G4QDiffractionRatio::TargFragm: *Filled* LeadingNuc="<<r4M<<pPDG<<G4endl; |
---|
| 468 | #endif |
---|
| 469 | G4QHadronVector* leadhs=new G4QHadronVector;// Quasmon Output G4QHadronVectorum --->---+ |
---|
| 470 | G4QContent dQC=G4QPDGCode(rPDG).GetQuarkContent(); // QuarkContent of quasiFreeNucleon | |
---|
| 471 | G4Quasmon* quasm = new G4Quasmon(dQC,d4M); // Quasmon=DiffractionExcitationQuasmon-+ | |
---|
| 472 | #ifdef debug |
---|
| 473 | G4cout<<"G4QDiffRatio::TgFrag:tPDG="<<tPDG<<",rPDG="<<rPDG<<",d4M="<<d4M<<G4endl;//| | |
---|
| 474 | #endif |
---|
| 475 | G4QEnvironment* pan= new G4QEnvironment(G4QNucleus(tPDG));// --> DELETED --->---+ | | |
---|
| 476 | pan->AddQuasmon(quasm); // Add diffractiveQuasmon to Environ.| | | |
---|
| 477 | #ifdef debug |
---|
| 478 | G4cout<<"G4QDiffractionRatio::TargFragment: EnvPDG="<<tPDG<<G4endl; // | | | |
---|
| 479 | #endif |
---|
| 480 | try // | | | |
---|
| 481 | { // | | | |
---|
| 482 | delete leadhs; // | | | |
---|
| 483 | leadhs = pan->Fragment();// DESTROYED in the end of the LOOP work space | | | |
---|
| 484 | } // | | | |
---|
| 485 | catch (G4QException& error)// | | | |
---|
| 486 | { // | | | |
---|
| 487 | //#ifdef pdebug |
---|
| 488 | G4cerr<<"***G4QCollision::PostStepDoIt: G4QE Exception is catched"<<G4endl;// | | | |
---|
| 489 | //#endif |
---|
| 490 | G4Exception("G4QCollision::PostStepDoIt:","27",FatalException,"CHIPSCrash");//| | | |
---|
| 491 | } // | | | |
---|
| 492 | delete pan; // Delete the Nuclear Environment <-<--+--+ | |
---|
| 493 | G4int qNH=leadhs->size(); // A#of collected hadrons from diff.frag. | |
---|
| 494 | if(qNH) for(G4int iq=0; iq<qNH; iq++) // Loop over hadrons to fill the result | |
---|
| 495 | { // | |
---|
| 496 | G4QHadron* loh=(*leadhs)[iq]; // Pointer to the output hadron | |
---|
| 497 | ResHV->push_back(loh); // Fill in the result | |
---|
| 498 | } // | |
---|
| 499 | delete leadhs; // <----<----<----<----<----<----<----<----<----<----<----<----<----<---* |
---|
| 500 | return ResHV; // Result |
---|
| 501 | } // End of TargFragment |
---|
| 502 | |
---|
| 503 | |
---|
| 504 | G4QHadronVector* G4QDiffractionRatio::ProjFragment(G4int pPDG, G4LorentzVector p4M, |
---|
| 505 | G4int tgZ, G4int tgN) |
---|
| 506 | { |
---|
| 507 | static const G4double pFm= 250.; // Fermi momentum in MeV (delta function) |
---|
| 508 | static const G4double pFm2= pFm*pFm; // Squared Fermi momentum in MeV^2 (delta function) |
---|
| 509 | static const G4double mPi0= G4QPDGCode(111).GetMass(); // pi0 mass (MeV =min diffraction) |
---|
| 510 | static const G4double mPi= G4QPDGCode(211).GetMass(); // pi+- mass (MeV) |
---|
| 511 | static const G4double mNeut= G4QPDGCode(2112).GetMass(); |
---|
| 512 | static const G4double mNeut2=mNeut*mNeut; |
---|
| 513 | static const G4double dmNeut=mNeut+mNeut; |
---|
| 514 | static const G4double mProt= G4QPDGCode(2212).GetMass(); |
---|
| 515 | static const G4double mProt2=mProt*mProt; |
---|
| 516 | static const G4double dmProt=mProt+mProt; |
---|
| 517 | static const G4double maxDM=mProt*12.; |
---|
| 518 | static const G4double mLamb= G4QPDGCode(3122).GetMass(); |
---|
| 519 | static const G4double mSigZ= G4QPDGCode(3212).GetMass(); |
---|
| 520 | static const G4double mSigM= G4QPDGCode(3112).GetMass(); |
---|
| 521 | static const G4double mSigP= G4QPDGCode(3222).GetMass(); |
---|
| 522 | static const G4double eps=.003; |
---|
| 523 | // |
---|
| 524 | G4LorentzVector pr4M=p4M/megaelectronvolt; // Convert 4-momenta in MeV (keep p4M) |
---|
| 525 | // prepare the DONOTHING answer |
---|
| 526 | G4QHadronVector* ResHV = new G4QHadronVector;// !! MUST BE DESTROYE/DDELETER by CALLER !! |
---|
| 527 | G4QHadron* hadron = new G4QHadron(pPDG,p4M); // Hadron for not scattered projectile |
---|
| 528 | ResHV->push_back(hadron); // It must be cleaned up for real scattering sec |
---|
| 529 | // @@ diffraction is simulated as noncoherent (coherent is small) |
---|
| 530 | G4int tgA=tgZ+tgN; // A of the target |
---|
| 531 | G4int tPDG=90000000+tgZ*1000+tgN; // PDG code of the targetNucleus/recoilNucleus |
---|
| 532 | G4double tgM=G4QPDGCode(tPDG).GetMass(); // Mass of the target nucleus |
---|
| 533 | G4int rPDG=2112; // prototype of PDG code of the recoiled nucleon |
---|
| 534 | if(tgA*G4UniformRand()>tgN) // Substitute by a proton |
---|
| 535 | { |
---|
| 536 | rPDG=2212; // PDG code of the recoiled QF nucleon |
---|
| 537 | tPDG-=1000; // PDG code of the recoiled nucleus |
---|
| 538 | } |
---|
| 539 | else tPDG-=1; // PDG code of the recoiled nucleus |
---|
| 540 | G4double tM=G4QPDGCode(tPDG).GetMass(); // Mass of the recoiled nucleus |
---|
| 541 | G4double tE=std::sqrt(tM*tM+pFm2); |
---|
| 542 | G4ThreeVector tP=pFm*G4RandomDirection(); |
---|
| 543 | G4LorentzVector t4M(tP,tE); // 4M of the recoil nucleus |
---|
| 544 | G4LorentzVector tg4M(0.,0.,0.,tgM); |
---|
| 545 | G4LorentzVector N4M=tg4M-t4M; // Quasi-free target nucleon |
---|
| 546 | G4LorentzVector tot4M=N4M+p4M; // total momentum of quasi-free diffraction |
---|
| 547 | G4double mT=mNeut; |
---|
| 548 | G4double mT2=mNeut2; // Squared mass of the free nucleon spectator |
---|
| 549 | G4double dmT=dmNeut; |
---|
| 550 | G4int Z=0; |
---|
| 551 | G4int N=1; |
---|
| 552 | if(rPDG==2212) |
---|
| 553 | { |
---|
| 554 | mT=mProt; |
---|
| 555 | mT2=mProt2; |
---|
| 556 | dmT=dmProt; |
---|
| 557 | Z=1; |
---|
| 558 | N=0; |
---|
| 559 | } |
---|
| 560 | G4double mP2=pr4M.m2(); // Squared mass of the projectile |
---|
| 561 | if(mP2<0.) mP2=0.; // A possible problem for photon (m_min = 2*m_pi0) |
---|
| 562 | G4double s=tot4M.m2(); // @@ Check <0 ... |
---|
| 563 | G4double E=(s-mT2-mP2)/dmT; // Effective interactin energy (virt. nucl. target) |
---|
| 564 | G4double E2=E*E; |
---|
| 565 | if(E<0. || E2<mP2) |
---|
| 566 | { |
---|
| 567 | #ifdef pdebug |
---|
| 568 | G4cerr<<"_Warning-G4DifR::PFra:<NegativeEnergy>E="<<E<<",E2="<<E2<<"<M2="<<mP2<<G4endl; |
---|
| 569 | #endif |
---|
| 570 | return ResHV; // Do Nothing Action |
---|
| 571 | } |
---|
| 572 | G4double mP=std::sqrt(mP2); |
---|
| 573 | if(mP<.1)mP=mPi0; // For photons min diffraction is gamma+P->Pi0+Pi0 |
---|
| 574 | G4double mMin=mP+mPi0; // Minimum diffractive mass |
---|
| 575 | G4double ss=std::sqrt(s); // CM compound mass (sqrt(s)) |
---|
| 576 | G4double mMax=ss-mT; // Maximum diffraction mass |
---|
| 577 | if(mMax>maxDM) mMax=maxDM; // Restriction to avoid too big masses |
---|
| 578 | if(mMin>=mMax) |
---|
| 579 | { |
---|
| 580 | #ifdef pdebug |
---|
| 581 | G4cerr<<"Warning-G4DifR::PFra:ZeroDiffractionMRange, mi="<<mMin<<", ma="<<mMax<<G4endl; |
---|
| 582 | #endif |
---|
| 583 | return ResHV; // Do Nothing Action |
---|
| 584 | } |
---|
| 585 | G4double R = G4UniformRand(); |
---|
| 586 | G4double mDif=std::exp(R*std::log(mMax)+(1.-R)*std::log(mMin)); // LowMassApproximation |
---|
| 587 | G4double mDif2=mDif*mDif; |
---|
| 588 | G4double ds=s-mT2-mDif2; |
---|
| 589 | G4double e=ds/dmT; |
---|
| 590 | G4double P=std::sqrt(e*e-mDif2); // Momentum in pseudo laboratory system |
---|
| 591 | G4VQCrossSection* CSmanager=G4QElasticCrossSection::GetPointer(); |
---|
| 592 | #ifdef debug |
---|
| 593 | G4cout<<"G4QDiffR::PFra: Before XS, P="<<P<<", Z="<<Z<<", N="<<N<<", PDG="<<pPDG<<G4endl; |
---|
| 594 | #endif |
---|
| 595 | // @@ Temporary NN t-dependence for all hadrons |
---|
| 596 | if(pPDG>3400 || pPDG<-3400) G4cout<<"-Warning-G4QDifR::Fragment: pPDG="<<pPDG<<G4endl; |
---|
| 597 | G4int PDG=2212; // *TMP* instead of pPDG |
---|
| 598 | G4double xSec=CSmanager->GetCrossSection(false, P, tgZ, tgN, PDG);// Rec.CrossSect *TMP* |
---|
| 599 | //G4double xSec=CSmanager->GetCrossSection(false, P, tgZ, tgN, pPDG); // Rec.CrossSect |
---|
| 600 | #ifdef debug |
---|
| 601 | G4cout<<"G4QDiffR::ProjFragment:pPDG="<<pPDG<<",P="<<P<<",CS="<<xSec/millibarn<<G4endl; |
---|
| 602 | #endif |
---|
| 603 | #ifdef nandebug |
---|
| 604 | if(xSec>0. || xSec<0. || xSec==0); |
---|
| 605 | else G4cout<<"***NAN***G4QDiffRatio::ProjFragment: xSec="<<xSec/millibarn<<G4endl; |
---|
| 606 | #endif |
---|
| 607 | // @@ check a possibility to separate p, n, or alpha (!) |
---|
| 608 | if(xSec <= 0.) // The cross-section iz 0 -> Do Nothing |
---|
| 609 | { |
---|
| 610 | #ifdef pdebug |
---|
| 611 | G4cerr<<"-Warning-G4QDiffRatio::ProjFragment:**Zero XS**PDG="<<pPDG<<",P="<<P<<G4endl; |
---|
| 612 | #endif |
---|
| 613 | return ResHV; //Do Nothing Action |
---|
| 614 | } |
---|
| 615 | G4double t=CSmanager->GetExchangeT(tgZ,tgN,pPDG); // functional randomized -t (MeV^2) |
---|
| 616 | G4double maxt=(ds*ds-4*mT2*mDif2)/s; // maximum possible -t |
---|
| 617 | #ifdef pdebug |
---|
| 618 | G4cout<<"G4QDifR::PFra:ph="<<pPDG<<",P="<<P<<",X="<<xSec<<",t="<<mint<<"<"<<maxt<<G4endl; |
---|
| 619 | #endif |
---|
| 620 | #ifdef nandebug |
---|
| 621 | if(mint>-.0000001); // To make the Warning for NAN |
---|
| 622 | else G4cout<<"******G4QDiffractionRatio::ProjFragment: -t="<<mint<<G4endl; |
---|
| 623 | #endif |
---|
| 624 | G4double rt=t/maxt; |
---|
| 625 | G4double cost=1.-rt-rt; // cos(theta) in CMS |
---|
| 626 | #ifdef ppdebug |
---|
| 627 | G4cout<<"G4QDiffRatio::ProjFragment: -t="<<t<<", maxt="<<maxt<<", cost="<<cost<<G4endl; |
---|
| 628 | #endif |
---|
| 629 | if(cost>1. || cost<-1. || !(cost>-1. || cost<=1.)) |
---|
| 630 | { |
---|
| 631 | if (cost>1.) cost=1.; |
---|
| 632 | else if(cost<-1.) cost=-1.; |
---|
| 633 | else |
---|
| 634 | { |
---|
| 635 | G4cerr<<"G4QDiffRat::ProjFragm: *NAN* cost="<<cost<<",t="<<t<<",tmax="<<maxt<<G4endl; |
---|
| 636 | return ResHV; // Do Nothing Action |
---|
| 637 | } |
---|
| 638 | } |
---|
| 639 | G4LorentzVector r4M=G4LorentzVector(0.,0.,0.,mT); // 4mom of the recoil nucleon |
---|
| 640 | G4LorentzVector d4M=G4LorentzVector(0.,0.,0.,mDif); // 4mom of the diffract. Quasmon |
---|
| 641 | G4LorentzVector dir4M=tot4M-G4LorentzVector(0.,0.,0.,(tot4M.e()-mT)*.01); |
---|
| 642 | if(!G4QHadron(tot4M).RelDecayIn2(d4M, r4M, dir4M, cost, cost)) |
---|
| 643 | { |
---|
| 644 | G4cerr<<"G4QDifR::PFr:M="<<tot4M.m()<<",T="<<mT<<",D="<<mDif<<",T+D="<<mT+mDif<<G4endl; |
---|
| 645 | //G4Exception("G4QDifR::Fragm:","009",FatalException,"Decay of ElasticComp"); |
---|
| 646 | return ResHV; // Do Nothing Action |
---|
| 647 | } |
---|
| 648 | #ifdef debug |
---|
| 649 | G4cout<<"G4QDiffR::ProjFragm:d4M="<<d4M<<"+r4M="<<r4M<<"="<<d4M+r4M<<"="<<tot4M<<G4endl; |
---|
| 650 | #endif |
---|
| 651 | // Now everything is ready for fragmentation and DoNothing projHadron must be wiped out |
---|
| 652 | ResHV->pop_back(); // Clean up pointer to the fake (doNothing) projectile |
---|
| 653 | delete hadron; // Delete the fake (doNothing) projectile hadron |
---|
| 654 | hadron = new G4QHadron(tPDG,t4M); // Hadron for the recoil neucleus |
---|
| 655 | ResHV->push_back(hadron); // Fill the recoil nucleus |
---|
| 656 | #ifdef debug |
---|
| 657 | G4cout<<"G4QDiffractionRatio::ProjFragment: *Filled* RecNucleus="<<t4M<<tPDG<<G4endl; |
---|
| 658 | #endif |
---|
| 659 | hadron = new G4QHadron(rPDG,r4M); // Hadron for the recoil nucleon |
---|
| 660 | ResHV->push_back(hadron); // Fill the recoil nucleon |
---|
| 661 | #ifdef debug |
---|
| 662 | G4cout<<"G4QDiffractionRatio::ProjFragment: *Filled* RecNucleon="<<r4M<<rPDG<<G4endl; |
---|
| 663 | #endif |
---|
| 664 | G4LorentzVector sum4M(0.,0.,0.,0.); |
---|
| 665 | // Now the (pPdg,d4M) Quasmon must be fragmented |
---|
| 666 | G4QHadronVector* leadhs = new G4QHadronVector;// Prototype of QuasmOutput G4QHadronVector |
---|
| 667 | G4QContent dQC=G4QPDGCode(pPDG).GetQuarkContent(); // Quark Content of the projectile |
---|
| 668 | G4Quasmon* pan= new G4Quasmon(dQC,d4M); // --->---->---->----->-----> DELETED -->---* |
---|
| 669 | try // | |
---|
| 670 | { // | |
---|
| 671 | G4QNucleus vac(90000000); // | |
---|
| 672 | leadhs=pan->Fragment(vac,1); // DELETED after it is copied to ResHV vector -->---+-* |
---|
| 673 | } // | | |
---|
| 674 | catch (G4QException& error) // | | |
---|
| 675 | { // | | |
---|
| 676 | G4cerr<<"***G4QDiffractionRatio::ProjFragment: G4Quasmon Exception"<<G4endl; //| | |
---|
| 677 | G4Exception("G4QDiffractionRatio::ProjFragment","72",FatalException,"*Quasmon");//| | |
---|
| 678 | } // | | |
---|
| 679 | delete pan; // Delete the Nuclear Environment <----<---* | |
---|
| 680 | G4int qNH=leadhs->size(); // A#of collected hadrons from diff.frag. | |
---|
| 681 | if(qNH) for(G4int iq=0; iq<qNH; iq++) // Loop over hadrons to fill the result | |
---|
| 682 | { // | |
---|
| 683 | G4QHadron* loh=(*leadhs)[iq]; // Pointer to the output hadron | |
---|
| 684 | G4int nL=loh->GetStrangeness(); // A number of Lambdas in the Hypernucleus | |
---|
| 685 | G4int nB=loh->GetBaryonNumber(); // Total Baryon Number of the Hypernucleus | |
---|
| 686 | G4int nC = loh->GetCharge(); // Charge of the Hypernucleus | |
---|
| 687 | G4int oPDG = loh->GetPDGCode(); // Original CHIPS PDG Code of the hadron | |
---|
| 688 | //if((nC>nB || nC<0) && nB>0 && nL>=0 && nL<=nB && oPDG>80000000) // Iso-nucleus | |
---|
| 689 | if(2>3) // Closed because "G4QDR::F:90002999,M=-7.768507e-04,B=2,S=0,C=3" is found | |
---|
| 690 | { |
---|
| 691 | G4LorentzVector q4M = loh->Get4Momentum(); // Get 4-momentum of the Isonucleus | |
---|
| 692 | G4double qM=q4M.m(); // Real mass of the Isonucleus |
---|
| 693 | #ifdef fdebug |
---|
| 694 | G4cout<<"G4QDR::PF:"<<oPDG<<",M="<<qM<<",B="<<nB<<",S="<<nL<<",C="<<nC<<G4endl;// | |
---|
| 695 | #endif |
---|
| 696 | G4int qPN=nC-nB; // Number of pions in the Isonucleus | |
---|
| 697 | G4int fPDG = 2212; // Prototype for nP+(Pi+) case | |
---|
| 698 | G4int sPDG = 211; |
---|
| 699 | G4int tPDG = 3122; // @@ Sigma0 (?) | |
---|
| 700 | G4double fMass= mProt; |
---|
| 701 | G4double sMass= mPi; |
---|
| 702 | G4double tMass= mLamb; // @@ Sigma0 (?) | |
---|
| 703 | G4bool cont=true; // Continue flag | |
---|
| 704 | // ========= Negative state ====== |
---|
| 705 | if(nC<0) // ====== Only Pi- can help | |
---|
| 706 | { |
---|
| 707 | if(nL&&nB==nL) // --- n*Lamb + k*(Pi-) State --- | |
---|
| 708 | { |
---|
| 709 | sPDG = -211; |
---|
| 710 | if(-nC==nL && nL==1) // Only one Sigma- like (nB=1) | |
---|
| 711 | { |
---|
| 712 | if(std::fabs(qM-mSigM)<eps) |
---|
| 713 | { |
---|
| 714 | loh->SetQPDG(G4QPDGCode(3112)); // This is Sigma- | |
---|
| 715 | cont=false; // Skip decay | |
---|
| 716 | } |
---|
| 717 | else if(qM>mLamb+mPi) //(2) Sigma- => Lambda + Pi- decay | |
---|
| 718 | { |
---|
| 719 | fPDG = 3122; |
---|
| 720 | fMass= mLamb; |
---|
| 721 | } |
---|
| 722 | else if(qM>mSigM) //(2) Sigma+=>Sigma++gamma decay | |
---|
| 723 | { |
---|
| 724 | fPDG = 3112; |
---|
| 725 | fMass= mSigM; |
---|
| 726 | sPDG = 22; |
---|
| 727 | sMass= 0.; |
---|
| 728 | } |
---|
| 729 | else //(2) Sigma-=>Neutron+Pi- decay | |
---|
| 730 | { |
---|
| 731 | fPDG = 2112; |
---|
| 732 | fMass= mNeut; |
---|
| 733 | } |
---|
| 734 | qPN = 1; // #of (Pi+ or gamma)'s = 1 | |
---|
| 735 | } |
---|
| 736 | else if(-nC==nL) //(2) a few Sigma- like | |
---|
| 737 | { |
---|
| 738 | qPN = 1; // One separated Sigma- | |
---|
| 739 | fPDG = 3112; |
---|
| 740 | sPDG = 3112; |
---|
| 741 | sMass= mSigM; |
---|
| 742 | nB--; |
---|
| 743 | fMass= mSigM; |
---|
| 744 | } |
---|
| 745 | else if(-nC>nL) //(2) n*(Sigma-)+m*(Pi-) | |
---|
| 746 | { |
---|
| 747 | qPN = -nC-nL; // #of Pi-'s | |
---|
| 748 | fPDG = 3112; |
---|
| 749 | fMass= mSigM; |
---|
| 750 | } |
---|
| 751 | else //(2) n*(Sigma-)+m*Lambda(-nC<nL) | |
---|
| 752 | { |
---|
| 753 | nB += nC; // #of Lambda's | |
---|
| 754 | fPDG = 3122; |
---|
| 755 | fMass= mLamb; |
---|
| 756 | qPN = -nC; // #of Sigma+'s | |
---|
| 757 | sPDG = 3112; |
---|
| 758 | sMass= mSigM; |
---|
| 759 | } |
---|
| 760 | nL = 0; // Only decays in two are above | |
---|
| 761 | } |
---|
| 762 | else if(nL) // ->n*Lamb+m*Neut+k*(Pi-) State (nL<nB) | |
---|
| 763 | { |
---|
| 764 | nB -= nL; // #of neutrons | |
---|
| 765 | fPDG = 2112; |
---|
| 766 | fMass= mNeut; |
---|
| 767 | G4int nPin = -nC; // #of Pi-'s |
---|
| 768 | if(nL==nPin) //(2) m*Neut+n*Sigma- | |
---|
| 769 | { |
---|
| 770 | qPN = nL; // #of Sigma- | |
---|
| 771 | sPDG = 3112; |
---|
| 772 | sMass= mSigM; |
---|
| 773 | nL = 0; |
---|
| 774 | } |
---|
| 775 | else if(nL>nPin) //(3) m*P+n*(Sigma+)+k*Lambda | |
---|
| 776 | { |
---|
| 777 | nL-=nPin; // #of Lambdas | |
---|
| 778 | qPN = nPin; // #of Sigma+ | |
---|
| 779 | sPDG = 3112; |
---|
| 780 | sMass= mSigM; |
---|
| 781 | } |
---|
| 782 | else //(3) m*N+n*(Sigma-)+k*(Pi-) (nL<nPin) | |
---|
| 783 | { |
---|
| 784 | qPN = nPin-nL; // #of Pi- | |
---|
| 785 | sPDG = -211; |
---|
| 786 | tPDG = 3112; |
---|
| 787 | tMass= mSigM; |
---|
| 788 | } |
---|
| 789 | } |
---|
| 790 | else //(2) n*N+m*(Pi-) (nL=0) | |
---|
| 791 | { |
---|
| 792 | sPDG = -211; |
---|
| 793 | qPN = -nC; |
---|
| 794 | fPDG = 2112; |
---|
| 795 | fMass= mNeut; |
---|
| 796 | } |
---|
| 797 | } |
---|
| 798 | else if(!nC) // *** Should not be here *** | |
---|
| 799 | { |
---|
| 800 | if(nL && nL<nB) //(2) n*Lamb+m*N ***Should not be here*** | |
---|
| 801 | { |
---|
| 802 | qPN = nL; |
---|
| 803 | fPDG = 2112; // mN+nL case | |
---|
| 804 | sPDG = 3122; |
---|
| 805 | sMass= mLamb; |
---|
| 806 | nB -= nL; |
---|
| 807 | fMass= mNeut; |
---|
| 808 | nL = 0; |
---|
| 809 | } |
---|
| 810 | else if(nL>1 && nB==nL) //(2) m*Lamb(m>1) ***Should not be here*** | |
---|
| 811 | { |
---|
| 812 | qPN = 1; |
---|
| 813 | fPDG = 3122; |
---|
| 814 | sPDG = 3122; |
---|
| 815 | sMass= mLamb; |
---|
| 816 | nB--; |
---|
| 817 | fMass= mLamb; |
---|
| 818 | } |
---|
| 819 | else if(!nL && nB>1) //(2) n*Neut(n>1) ***Should not be here*** | |
---|
| 820 | { |
---|
| 821 | qPN = 1; |
---|
| 822 | fPDG = 2112; |
---|
| 823 | sPDG = 2112; |
---|
| 824 | sMass= mNeut; |
---|
| 825 | nB--; |
---|
| 826 | fMass= mNeut; |
---|
| 827 | } |
---|
| 828 | else G4cout<<"*?*G4QDiffractionRatio::ProjFragment: (1) oPDG="<<oPDG<<G4endl;// | |
---|
| 829 | } |
---|
| 830 | else if(nC>0) // n*Lamb+(m*P)+(k*Pi+) | |
---|
| 831 | { |
---|
| 832 | if(nL && nL+nC==nB) //(2) n*Lamb+m*P ***Should not be here*** | |
---|
| 833 | { |
---|
| 834 | qPN = nL; |
---|
| 835 | nL = 0; |
---|
| 836 | fPDG = 2212; |
---|
| 837 | sPDG = 3122; |
---|
| 838 | sMass= mLamb; |
---|
| 839 | nB = nC; |
---|
| 840 | fMass= mProt; |
---|
| 841 | } |
---|
| 842 | else if(nL && nC<nB-nL) //(3)n*L+m*P+k*N ***Should not be here*** | |
---|
| 843 | { |
---|
| 844 | qPN = nC; // #of protons | |
---|
| 845 | fPDG = 2112; // mP+nL case | |
---|
| 846 | sPDG = 2212; |
---|
| 847 | sMass= mProt; |
---|
| 848 | nB -= nL+nC; // #of neutrons | |
---|
| 849 | fMass= mNeut; |
---|
| 850 | } |
---|
| 851 | else if(nL && nB==nL) // ---> n*L+m*Pi+ State | |
---|
| 852 | { |
---|
| 853 | if(nC==nL && nL==1) // Only one Sigma+ like State | |
---|
| 854 | { |
---|
| 855 | if(std::fabs(qM-mSigP)<eps) |
---|
| 856 | { |
---|
| 857 | loh->SetQPDG(G4QPDGCode(3222)); // This is GS Sigma+ | |
---|
| 858 | cont=false; // Skip decay | |
---|
| 859 | } |
---|
| 860 | else if(qM>mLamb+mPi) //(2) Sigma+=>Lambda+Pi+ decay | |
---|
| 861 | { |
---|
| 862 | fPDG = 3122; |
---|
| 863 | fMass= mLamb; |
---|
| 864 | } |
---|
| 865 | else if(qM>mNeut+mPi) //(2) Sigma+=>Neutron+Pi+ decay | |
---|
| 866 | { |
---|
| 867 | fPDG = 2112; |
---|
| 868 | fMass= mNeut; |
---|
| 869 | } |
---|
| 870 | else if(qM>mSigP) //(2) Sigma+=>Sigma++gamma decay | |
---|
| 871 | { |
---|
| 872 | fPDG = 3222; |
---|
| 873 | fMass= mSigP; |
---|
| 874 | sPDG = 22; |
---|
| 875 | sMass= 0.; |
---|
| 876 | } |
---|
| 877 | else //(2) Sigma+=>Proton+gamma decay | |
---|
| 878 | { |
---|
| 879 | fPDG = 2212; |
---|
| 880 | fMass= mProt; |
---|
| 881 | sPDG = 22; |
---|
| 882 | sMass= 0.; |
---|
| 883 | } |
---|
| 884 | qPN = 1; // #of (Pi+ or gamma)'s = 1 | |
---|
| 885 | } |
---|
| 886 | else if(nC==nL) //(2) a few Sigma+ like hyperons | |
---|
| 887 | { |
---|
| 888 | qPN = 1; |
---|
| 889 | fPDG = 3222; |
---|
| 890 | sPDG = 3222; |
---|
| 891 | sMass= mSigP; |
---|
| 892 | nB--; |
---|
| 893 | fMass= mSigP; |
---|
| 894 | } |
---|
| 895 | else if(nC>nL) //(2) n*(Sigma+)+m*(Pi+) | |
---|
| 896 | { |
---|
| 897 | qPN = nC-nL; // #of Pi+'s | |
---|
| 898 | fPDG = 3222; |
---|
| 899 | nB = nL; // #of Sigma+'s | |
---|
| 900 | fMass= mSigP; |
---|
| 901 | } |
---|
| 902 | else //(2) n*(Sigma+)+m*Lambda | |
---|
| 903 | { |
---|
| 904 | nB -= nC; // #of Lambda's | |
---|
| 905 | fPDG = 3122; |
---|
| 906 | fMass= mLamb; |
---|
| 907 | qPN = nC; // #of Sigma+'s | |
---|
| 908 | sPDG = 3222; |
---|
| 909 | sMass= mSigP; |
---|
| 910 | } |
---|
| 911 | nL = 0; // All above are decays in 2 | |
---|
| 912 | } |
---|
| 913 | else if(nL && nC>nB-nL) // n*Lamb+m*P+k*Pi+ | |
---|
| 914 | { |
---|
| 915 | nB -= nL; // #of protons | |
---|
| 916 | G4int nPip = nC-nB; // #of Pi+'s | |
---|
| 917 | if(nL==nPip) //(2) m*P+n*Sigma+ | |
---|
| 918 | { |
---|
| 919 | qPN = nL; // #of Sigma+ | |
---|
| 920 | sPDG = 3222; |
---|
| 921 | sMass= mSigP; |
---|
| 922 | nL = 0; |
---|
| 923 | } |
---|
| 924 | else if(nL>nPip) //(3) m*P+n*(Sigma+)+k*Lambda | |
---|
| 925 | { |
---|
| 926 | nL -= nPip; // #of Lambdas | |
---|
| 927 | qPN = nPip; // #of Sigma+ | |
---|
| 928 | sPDG = 3222; |
---|
| 929 | sMass= mSigP; |
---|
| 930 | } |
---|
| 931 | else //(3) m*P+n*(Sigma+)+k*(Pi+) | |
---|
| 932 | { |
---|
| 933 | qPN = nPip-nL; // #of Pi+ | |
---|
| 934 | tPDG = 3222; |
---|
| 935 | tMass= mSigP; |
---|
| 936 | } |
---|
| 937 | } |
---|
| 938 | if(nC<nB) //(2) n*P+m*N ***Should not be here*** | |
---|
| 939 | { |
---|
| 940 | fPDG = 2112; |
---|
| 941 | fMass= mNeut; |
---|
| 942 | qPN = nC; |
---|
| 943 | sPDG = 2212; |
---|
| 944 | sMass= mProt; |
---|
| 945 | } |
---|
| 946 | else if(nB==nC && nC>1) //(2) m*Prot(m>1) ***Should not be here*** | |
---|
| 947 | { |
---|
| 948 | qPN = 1; |
---|
| 949 | fPDG = 2212; |
---|
| 950 | sPDG = 2212; |
---|
| 951 | sMass= mProt; |
---|
| 952 | nB--; |
---|
| 953 | fMass= mProt; |
---|
| 954 | } |
---|
| 955 | else if(nC<=nB||!nB) G4cout<<"*?*G4QDR::ProjFragm: (2) oPDG="<<oPDG<<G4endl; // | |
---|
| 956 | // !nL && nC>nB //(2) Default condition n*P+m*(Pi+) | |
---|
| 957 | } |
---|
| 958 | if(cont) // Make a decay | |
---|
| 959 | { |
---|
| 960 | G4double tfM=nB*fMass; |
---|
| 961 | G4double tsM=qPN*sMass; |
---|
| 962 | G4double ttM=0.; |
---|
| 963 | if(nL) ttM=nL*tMass; |
---|
| 964 | G4LorentzVector f4Mom(0.,0.,0.,tfM); |
---|
| 965 | G4LorentzVector s4Mom(0.,0.,0.,tsM); |
---|
| 966 | G4LorentzVector t4Mom(0.,0.,0.,ttM); |
---|
| 967 | G4double sum=tfM+tsM+ttM; |
---|
| 968 | if(std::fabs(qM-sum)<eps) |
---|
| 969 | { |
---|
| 970 | f4Mom=q4M*(tfM/sum); |
---|
| 971 | s4Mom=q4M*(tsM/sum); |
---|
| 972 | if(nL) t4Mom=q4M*(ttM/sum); |
---|
| 973 | } |
---|
| 974 | else if(!nL && (qM<sum || !G4QHadron(q4M).DecayIn2(f4Mom, s4Mom))) // Error | |
---|
| 975 | { |
---|
| 976 | //#ifdef fdebug |
---|
| 977 | G4cout<<"***G4QDR::PrFragm:fPDG="<<fPDG<<"*"<<nB<<"(fM="<<fMass<<")+sPDG="<<sPDG |
---|
| 978 | <<"*"<<qPN<<"(sM="<<sMass<<")"<<"="<<sum<<" > TM="<<qM<<q4M<<oPDG<<G4endl; |
---|
| 979 | //#endif |
---|
| 980 | throw G4QException("*G4QDiffractionRatio::ProjFragment: Bad decay in 2"); // | |
---|
| 981 | } |
---|
| 982 | else if(nL && (qM<sum || !G4QHadron(q4M).DecayIn3(f4Mom, s4Mom, t4Mom)))// Error| |
---|
| 983 | { |
---|
| 984 | //#ifdef fdebug |
---|
| 985 | G4cout<<"***G4DF::PrFrag: "<<fPDG<<"*"<<nB<<"("<<fMass<<")+"<<sPDG<<"*"<<qPN<<"(" |
---|
| 986 | <<sMass<<")+Lamb*"<<nL<<"="<<sum<<" > TotM="<<qM<<q4M<<oPDG<<G4endl; |
---|
| 987 | //#endif |
---|
| 988 | throw G4QException("*G4QDiffractionRatio::ProjFragment: Bad decay in 3"); // | |
---|
| 989 | } |
---|
| 990 | #ifdef fdebug |
---|
| 991 | G4cout<<"G4QDF::ProjFragm: *DONE* n="<<nB<<f4Mom<<fPDG<<", m="<<qPN<<s4Mom<<sPDG |
---|
| 992 | <<", l="<<nL<<t4Mom<<G4endl; |
---|
| 993 | #endif |
---|
| 994 | G4bool notused=true; |
---|
| 995 | if(nB) // There are baryons | |
---|
| 996 | { |
---|
| 997 | f4Mom/=nB; |
---|
| 998 | loh->Set4Momentum(f4Mom); // ! Update the Hadron ! | |
---|
| 999 | loh->SetQPDG(G4QPDGCode(fPDG)); // Baryons | |
---|
| 1000 | notused=false; // Loh was used | |
---|
| 1001 | if(nB>1) for(G4int ih=1; ih<nB; ih++) // Loop over the rest of baryons | |
---|
| 1002 | { |
---|
| 1003 | G4QHadron* Hi = new G4QHadron(fPDG,f4Mom); // Create a Hadron for Baryon | |
---|
| 1004 | ResHV->push_back(Hi); // Fill in the additional nucleon | |
---|
| 1005 | #ifdef fdebug |
---|
| 1006 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1007 | G4cout<<"G4QDR::ProjFrag: *additional Nucleon*="<<f4Mom<<fPDG<<G4endl; // | |
---|
| 1008 | #endif |
---|
| 1009 | } |
---|
| 1010 | } |
---|
| 1011 | if(qPN) // There are pions | |
---|
| 1012 | { |
---|
| 1013 | s4Mom/=qPN; |
---|
| 1014 | G4int min=0; |
---|
| 1015 | if(notused) |
---|
| 1016 | { |
---|
| 1017 | loh->Set4Momentum(s4Mom); // ! Update the Hadron 4M ! | |
---|
| 1018 | loh->SetQPDG(G4QPDGCode(sPDG)); // Update PDG | |
---|
| 1019 | notused=false; // loh was used | |
---|
| 1020 | min=1; // start value | |
---|
| 1021 | } |
---|
| 1022 | if(qPN>min) for(G4int ip=min; ip<qPN; ip++) // Loop over pions | |
---|
| 1023 | { |
---|
| 1024 | G4QHadron* Hj = new G4QHadron(sPDG,s4Mom); // Create a Hadron for the meson | |
---|
| 1025 | ResHV->push_back(Hj); // Fill in the additional pion | |
---|
| 1026 | #ifdef fdebug |
---|
| 1027 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1028 | G4cout<<"G4QDR::ProjFragm: *additional Pion*="<<f4Mom<<fPDG<<G4endl; // | |
---|
| 1029 | #endif |
---|
| 1030 | } |
---|
| 1031 | } |
---|
| 1032 | if(nL) // There are Hyperons | |
---|
| 1033 | { |
---|
| 1034 | t4Mom/=nL; |
---|
| 1035 | G4int min=0; |
---|
| 1036 | if(notused) |
---|
| 1037 | { |
---|
| 1038 | loh->Set4Momentum(t4Mom); // ! Update the Hadron 4M ! | |
---|
| 1039 | loh->SetQPDG(G4QPDGCode(tPDG));// Update PDG | |
---|
| 1040 | notused=false; // loh was used | |
---|
| 1041 | min=1; // |
---|
| 1042 | } |
---|
| 1043 | if(nL>min) for(G4int il=min; il<nL; il++) // Loop over Hyperons | |
---|
| 1044 | { |
---|
| 1045 | G4QHadron* Hk = new G4QHadron(tPDG,t4Mom); // Create a Hadron for Lambda | |
---|
| 1046 | ResHV->push_back(Hk); // Fill in the additional pion | |
---|
| 1047 | #ifdef fdebug |
---|
| 1048 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1049 | G4cout<<"G4QDR::ProjFragm: *additional Hyperon*="<<f4Mom<<fPDG<<G4endl; // | |
---|
| 1050 | #endif |
---|
| 1051 | } |
---|
| 1052 | } |
---|
| 1053 | } // --> End of decay | |
---|
| 1054 | } // -> End of Iso-nuclear treatment | |
---|
| 1055 | else if( (nL > 0 && nB > 1) || (nL < 0 && nB < -1) ) |
---|
| 1056 | { // Hypernucleus is found | |
---|
| 1057 | G4bool anti=false; // Default=Nucleus (true=antinucleus | |
---|
| 1058 | if(nB<0) // Anti-nucleus | |
---|
| 1059 | { |
---|
| 1060 | anti=true; // Flag of anti-hypernucleus | |
---|
| 1061 | nB=-nB; // Reverse the baryon number | |
---|
| 1062 | nC=-nC; // Reverse the charge | |
---|
| 1063 | nL=-nL; // Reverse the strangeness | |
---|
| 1064 | } |
---|
| 1065 | G4int hPDG = 90000000+nL*999999+nC*999+nB; // CHIPS PDG Code for Hypernucleus | |
---|
| 1066 | G4int nSM=0; // A#0f unavoidable Sigma- | |
---|
| 1067 | G4int nSP=0; // A#0f unavoidable Sigma+ | |
---|
| 1068 | if(nC<0) // Negative hypernucleus | |
---|
| 1069 | { |
---|
| 1070 | if(-nC<=nL) // Partial compensation by Sigma- | |
---|
| 1071 | { |
---|
| 1072 | nSM=-nC; // Can be compensated by Sigma- | |
---|
| 1073 | nL+=nC; // Reduce the residual strangeness | |
---|
| 1074 | } |
---|
| 1075 | else // All Charge is compensated by Sigma- | |
---|
| 1076 | { |
---|
| 1077 | nSM=nL; // The maximum number of Sigma- | |
---|
| 1078 | nL=0; // Kill the residual strangeness | |
---|
| 1079 | } |
---|
| 1080 | } |
---|
| 1081 | else if(nC>nB-nL) // Extra positive hypernucleus | |
---|
| 1082 | { |
---|
| 1083 | if(nC<=nB) // Partial compensation by Sigma+ | |
---|
| 1084 | { |
---|
| 1085 | G4int dH=nB-nC; // Isotopic shift | |
---|
| 1086 | nSP=nL-dH; // Can be compensated by Sigma+ | |
---|
| 1087 | nL=dH; // Reduce the residual strangeness | |
---|
| 1088 | } |
---|
| 1089 | else // All Charge is compensated by Sigma+ | |
---|
| 1090 | { |
---|
| 1091 | nSP=nL; // The maximum number of Sigma+ | |
---|
| 1092 | nL=0; // Kill the residual strangeness | |
---|
| 1093 | } |
---|
| 1094 | } |
---|
| 1095 | G4LorentzVector r4M=loh->Get4Momentum(); // Real 4-momentum of the hypernucleus ! |
---|
| 1096 | G4double reM=r4M.m(); // Real mass of the hypernucleus | |
---|
| 1097 | #ifdef fdebug |
---|
| 1098 | G4cout<<"G4QDiffRatio::PrFrag:oPDG=="<<oPDG<<",hPDG="<<hPDG<<",M="<<reM<<G4endl;//| |
---|
| 1099 | #endif |
---|
| 1100 | G4int rlPDG=hPDG-nL*1000000-nSP*1000999-nSM*999001;// Subtract Lamb/Sig from Nucl.| |
---|
| 1101 | G4int sPDG=3122; // Prototype for the Hyperon PDG (Lambda)| |
---|
| 1102 | G4double MLa=mLamb; // Prototype for one Hyperon decay | |
---|
| 1103 | #ifdef fdebug |
---|
| 1104 | G4cout<<"G4QDiffRatio::PrFrag:*G4*nS+="<<nSP<<",nS-="<<nSM<<",nL="<<nL<<G4endl;// | |
---|
| 1105 | #endif |
---|
| 1106 | if(nSP||nSM) // Sigma+/- improvement | |
---|
| 1107 | { |
---|
| 1108 | if(nL) // By mistake Lambda improvement is found | |
---|
| 1109 | { |
---|
| 1110 | G4cout<<"***G4QDR::PFr:HypN="<<hPDG<<": bothSigm&Lamb -> ImproveIt"<<G4endl;//| |
---|
| 1111 | //throw G4QException("*G4QDiffractionRatio::Fragment:BothLambda&SigmaInHN");//| |
---|
| 1112 | // @@ Correction, which does not conserv the charge !! (-> add decay in 3) | |
---|
| 1113 | if(nSP) nL+=nSP; // Convert Sigma+ to Lambda | |
---|
| 1114 | else nL+=nSM; // Convert Sigma- to Lambda | |
---|
| 1115 | } |
---|
| 1116 | if(nSP) // Sibma+ should be decayed | |
---|
| 1117 | { |
---|
| 1118 | nL=nSP; // #of decaying hyperons | |
---|
| 1119 | sPDG=3222; // PDG code of decaying hyperons | |
---|
| 1120 | MLa=mSigP; // Mass of decaying hyperons | |
---|
| 1121 | } |
---|
| 1122 | else // Sibma+ should be decayed | |
---|
| 1123 | { |
---|
| 1124 | nL=nSM; // #of decaying hyperons | |
---|
| 1125 | sPDG=3112; // PDG code of decaying hyperons | |
---|
| 1126 | MLa=mSigM; // Mass of decaying hyperons | |
---|
| 1127 | } |
---|
| 1128 | } |
---|
| 1129 | #ifdef fdebug |
---|
| 1130 | G4cout<<"G4QDiffRat::ProjFrag:*G4*mS="<<MLa<<",sPDG="<<sPDG<<",nL="<<nL<<G4endl;//| |
---|
| 1131 | #endif |
---|
| 1132 | if(nL>1) MLa*=nL; // Total mass of the decaying hyperons | |
---|
| 1133 | G4double rlM=G4QNucleus(rlPDG).GetMZNS();// Mass of the NonstrangeNucleus | |
---|
| 1134 | if(!nSP&&!nSM&&nL==1&&reM>rlM+mSigZ&&G4UniformRand()>.5) // Conv Lambda->Sigma0 | |
---|
| 1135 | { |
---|
| 1136 | sPDG=3212; // PDG code of a decaying hyperon | |
---|
| 1137 | MLa=mSigZ; // Mass of the decaying hyperon | |
---|
| 1138 | } |
---|
| 1139 | G4int rnPDG = hPDG-nL*999999; // Convert Lambdas to neutrons (for convInN) | |
---|
| 1140 | G4QNucleus rnN(rnPDG); // New nonstrange nucleus | |
---|
| 1141 | G4double rnM=rnN.GetMZNS(); // Mass of the new nonstrange nucleus | |
---|
| 1142 | // @@ In future take into account Iso-Hypernucleus (Add PI+,R & Pi-,R decays) | |
---|
| 1143 | if(rlPDG==90000000) // Multy Hyperon (HyperNuc of only hyperons) | |
---|
| 1144 | { |
---|
| 1145 | if(nL>1) r4M=r4M/nL; // split the 4-mom for the MultyLambda | |
---|
| 1146 | for(G4int il=0; il<nL; il++) // loop over Lambdas | |
---|
| 1147 | { |
---|
| 1148 | if(anti) sPDG=-sPDG; // For anti-nucleus case | |
---|
| 1149 | G4QHadron* theLam = new G4QHadron(sPDG,r4M); // Make NewHadr for the Hyperon | |
---|
| 1150 | ResHV->push_back(theLam); // Fill in the Lambda | |
---|
| 1151 | #ifdef fdebug |
---|
| 1152 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1153 | G4cout<<"G4QDR::ProjFrag: *additional Lambda*="<<r4M<<sPDG<<G4endl; // | |
---|
| 1154 | #endif |
---|
| 1155 | } |
---|
| 1156 | } |
---|
| 1157 | else if(reM>rlM+MLa-eps) // Lambda (or Sigma) can be split | |
---|
| 1158 | { |
---|
| 1159 | G4LorentzVector n4M(0.,0.,0.,rlM); // 4-mom of the residual nucleus | |
---|
| 1160 | G4LorentzVector h4M(0.,0.,0.,MLa); // 4-mom of the Hyperon | |
---|
| 1161 | G4double sum=rlM+MLa; // Safety sum | |
---|
| 1162 | if(std::fabs(reM-sum)<eps) // At rest in CMS | |
---|
| 1163 | { |
---|
| 1164 | n4M=r4M*(rlM/sum); // Split tot 4-mom for resNuc | |
---|
| 1165 | h4M=r4M*(MLa/sum); // Split tot 4-mom for Hyperon | |
---|
| 1166 | } |
---|
| 1167 | else if(reM<sum || !G4QHadron(r4M).DecayIn2(n4M,h4M)) // Error in decay | |
---|
| 1168 | { |
---|
| 1169 | G4cerr<<"***G4QDF::PF:HypN,M="<<reM<<"<A+n*L="<<sum<<",d="<<sum-reM<<G4endl;//| |
---|
| 1170 | throw G4QException("***G4QDiffractionRatio::ProjFragment:HypernuclusDecay");//| |
---|
| 1171 | } |
---|
| 1172 | #ifdef fdebug |
---|
| 1173 | G4cout<<"*G4QDR::PF:HypN="<<r4M<<"->A="<<rlPDG<<n4M<<",n*L="<<nL<<h4M<<G4endl;//| |
---|
| 1174 | #endif |
---|
| 1175 | loh->Set4Momentum(n4M); // ! Update the Hadron ! | |
---|
| 1176 | if(anti && rlPDG==90000001) rlPDG=-2112; // Convert to anti-neutron | |
---|
| 1177 | if(anti && rlPDG==90001000) rlPDG=-2212; // Convert to anti-proton | |
---|
| 1178 | loh->SetQPDG(G4QPDGCode(rlPDG)); // ConvertedHypernucleus to nonstrange(@anti)| |
---|
| 1179 | if(rlPDG==90000002) // Additional action with loH changed to 2n | |
---|
| 1180 | { |
---|
| 1181 | G4LorentzVector newLV=n4M/2.; // Split 4-momentum | |
---|
| 1182 | loh->Set4Momentum(newLV); // Reupdate the hadron | |
---|
| 1183 | if(anti) loh->SetQPDG(G4QPDGCode(-2112)); // Make anti-neutron PDG | |
---|
| 1184 | else loh->SetQPDG(G4QPDGCode(2112)); // Make neutron PDG | |
---|
| 1185 | G4QHadron* secHadr = new G4QHadron(loh); // Duplicate the neutron | |
---|
| 1186 | ResHV->push_back(secHadr); // Fill in the additional neutron | |
---|
| 1187 | #ifdef fdebug |
---|
| 1188 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1189 | G4cout<<"G4QDR::ProgFrag: *additional Neutron*="<<r4M<<sPDG<<G4endl; // | |
---|
| 1190 | #endif |
---|
| 1191 | } |
---|
| 1192 | else if(rlPDG==90002000) // Additional action with loH change to 2p | |
---|
| 1193 | { |
---|
| 1194 | G4LorentzVector newLV=n4M/2.; // Split 4-momentum | |
---|
| 1195 | loh->Set4Momentum(newLV); // Reupdate the hadron | |
---|
| 1196 | if(anti) loh->SetQPDG(G4QPDGCode(-2212)); // Make anti-neutron PDG | |
---|
| 1197 | else loh->SetQPDG(G4QPDGCode(2112)); // Make neutron PDG | |
---|
| 1198 | G4QHadron* secHadr = new G4QHadron(loh); // Duplicate the proton | |
---|
| 1199 | ResHV->push_back(secHadr); // Fill in the additional neutron | |
---|
| 1200 | #ifdef fdebug |
---|
| 1201 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1202 | G4cout<<"G4QDR::ProjFrag: *additional Proton*="<<r4M<<sPDG<<G4endl; // | |
---|
| 1203 | #endif |
---|
| 1204 | } |
---|
| 1205 | // @@(?) Add multybaryon decays if necessary (Now it anyhow is made later) | |
---|
| 1206 | #ifdef fdebug |
---|
| 1207 | G4cout<<"*G4QDiffractionRatio::PrFrag:resNucPDG="<<loh->GetPDGCode()<<G4endl;// | |
---|
| 1208 | #endif |
---|
| 1209 | if(nL>1) h4M=h4M/nL; // split the lambda's 4-mom if necessary | |
---|
| 1210 | for(G4int il=0; il<nL; il++) // A loop over excessive hyperons | |
---|
| 1211 | { |
---|
| 1212 | if(anti) sPDG=-sPDG; // For anti-nucleus case | |
---|
| 1213 | G4QHadron* theLamb = new G4QHadron(sPDG,h4M); // Make NewHadr for the Hyperon | |
---|
| 1214 | ResHV->push_back(theLamb); // Fill in the additional neutron | |
---|
| 1215 | #ifdef fdebug |
---|
| 1216 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1217 | G4cout<<"G4QDR::ProjFrag: *additional Hyperon*="<<r4M<<sPDG<<G4endl; // | |
---|
| 1218 | #endif |
---|
| 1219 | } |
---|
| 1220 | } |
---|
| 1221 | else if(reM>rnM+mPi0-eps&&!nSP&&!nSM)// Lambda->N only if Sigmas are absent | |
---|
| 1222 | { |
---|
| 1223 | G4int nPi=static_cast<G4int>((reM-rnM)/mPi0); // Calc. pion multiplicity | |
---|
| 1224 | if (nPi>nL) nPi=nL; // Cut the pion multiplicity | |
---|
| 1225 | G4double npiM=nPi*mPi0; // Total pion mass | |
---|
| 1226 | G4LorentzVector n4M(0.,0.,0.,rnM); // Residual nucleus 4-momentum | |
---|
| 1227 | G4LorentzVector h4M(0.,0.,0.,npiM);// 4-momentum of pions | |
---|
| 1228 | G4double sum=rnM+npiM; // Safety sum | |
---|
| 1229 | if(std::fabs(reM-sum)<eps) // At rest | |
---|
| 1230 | { |
---|
| 1231 | n4M=r4M*(rnM/sum); // The residual nucleus part | |
---|
| 1232 | h4M=r4M*(npiM/sum); // The pion part | |
---|
| 1233 | } |
---|
| 1234 | else if(reM<sum || !G4QHadron(r4M).DecayIn2(n4M,h4M)) // Error in decay | |
---|
| 1235 | { |
---|
| 1236 | G4cerr<<"*G4QDR::PF:HypN,M="<<reM<<"<A+n*Pi0="<<sum<<",d="<<sum-reM<<G4endl;//| |
---|
| 1237 | throw G4QException("***G4QDiffractionRatio::ProjFragment:HypernuclDecay"); // | |
---|
| 1238 | } |
---|
| 1239 | loh->Set4Momentum(n4M); // ! Update the Hadron ! | |
---|
| 1240 | if(anti && rnPDG==90000001) rnPDG=-2112; // Convert to anti-neutron | |
---|
| 1241 | if(anti && rnPDG==90001000) rnPDG=-2212; // Convert to anti-proton | |
---|
| 1242 | loh->SetQPDG(G4QPDGCode(rnPDG)); // convert hyperNuc to nonstrangeNuc(@@anti) | |
---|
| 1243 | #ifdef fdebug |
---|
| 1244 | G4cout<<"*G4QDR::PF:R="<<r4M<<"->A="<<rnPDG<<n4M<<",n*Pi0="<<nPi<<h4M<<G4endl;//| |
---|
| 1245 | #endif |
---|
| 1246 | if(nPi>1) h4M=h4M/nPi; // Split the 4-mom if necessary | |
---|
| 1247 | for(G4int ihn=0; ihn<nPi; ihn++) // A loop over additional pions | |
---|
| 1248 | { |
---|
| 1249 | G4QHadron* thePion = new G4QHadron(111,h4M); // Make a New Hadr for the pi0 | |
---|
| 1250 | ResHV->push_back(thePion); // Fill in the Pion | |
---|
| 1251 | #ifdef fdebug |
---|
| 1252 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1253 | G4cout<<"G4QDR::ProjFrag: *additional Pion*="<<r4M<<sPDG<<G4endl; // | |
---|
| 1254 | #endif |
---|
| 1255 | } |
---|
| 1256 | if(rnPDG==90000002) // Additional action with loH change to 2n | |
---|
| 1257 | { |
---|
| 1258 | G4LorentzVector newLV=n4M/2.; // Split 4-momentum | |
---|
| 1259 | loh->Set4Momentum(newLV); // Reupdate the hadron | |
---|
| 1260 | if(anti) loh->SetQPDG(G4QPDGCode(-2112)); // Make anti-neutron PDG | |
---|
| 1261 | else loh->SetQPDG(G4QPDGCode(2112)); // Make neutron PDG | |
---|
| 1262 | G4QHadron* secHadr = new G4QHadron(loh); // Duplicate the neutron | |
---|
| 1263 | ResHV->push_back(secHadr); // Fill in the additional neutron | |
---|
| 1264 | #ifdef fdebug |
---|
| 1265 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1266 | G4cout<<"G4QDR::ProjFrag: *additional Neutron*="<<r4M<<sPDG<<G4endl; // | |
---|
| 1267 | #endif |
---|
| 1268 | } |
---|
| 1269 | else if(rnPDG==90002000) // Additional action with loH change to 2p | |
---|
| 1270 | { |
---|
| 1271 | G4LorentzVector newLV=n4M/2.; // Split 4-momentum | |
---|
| 1272 | loh->Set4Momentum(newLV); // Reupdate the hadron | |
---|
| 1273 | if(anti) loh->SetQPDG(G4QPDGCode(-2212)); // Make anti-neutron PDG | |
---|
| 1274 | else loh->SetQPDG(G4QPDGCode(2112)); // Make neutron PDG | |
---|
| 1275 | G4QHadron* secHadr = new G4QHadron(loh); // Duplicate the proton | |
---|
| 1276 | ResHV->push_back(secHadr); // Fill in the additional neutron | |
---|
| 1277 | #ifdef fdebug |
---|
| 1278 | sum4M+=r4M; // Sum 4-momenta for the EnMom check | |
---|
| 1279 | G4cout<<"G4QDR::ProjFrag: *additional Proton*="<<r4M<<sPDG<<G4endl; // | |
---|
| 1280 | #endif |
---|
| 1281 | } |
---|
| 1282 | // @@ Add multybaryon decays if necessary | |
---|
| 1283 | } |
---|
| 1284 | else // If this Excepton shows up (lowProbable appearance) => include gamma decay | |
---|
| 1285 | { |
---|
| 1286 | G4double d=rlM+MLa-reM; // Hyperon Excessive energy | |
---|
| 1287 | G4cerr<<"G4QDR::PF:R="<<rlM<<",S+="<<nSP<<",S-="<<nSM<<",L="<<nL<<",d="<<d<<G4endl; |
---|
| 1288 | d=rnM+mPi0-reM; // Pion Excessive energy | |
---|
| 1289 | G4cerr<<"G4QDR::PF:"<<oPDG<<","<<hPDG<<",M="<<reM<<"<"<<rnM+mPi0<<",d="<<d<<G4endl; |
---|
| 1290 | throw G4QException("G4QDiffractionRatio::ProjFragment: Hypernuclear conver");// | |
---|
| 1291 | } |
---|
| 1292 | } // => End of G4 Hypernuclear decay | |
---|
| 1293 | ResHV->push_back(loh); // Fill in the result | |
---|
| 1294 | #ifdef debug |
---|
| 1295 | sum4M+=loh->Get4Momentum(); // Sum 4-momenta for the EnMom check | |
---|
| 1296 | G4cout<<"G4QDR::PrFra:#"<<iq<<","<<loh->Get4Momentum()<<loh->GetPDGCode()<<G4endl;//| |
---|
| 1297 | #endif |
---|
| 1298 | } // | |
---|
| 1299 | delete leadhs; // <----<----<----<----<----<----<----<----<----<----<----<----<----<--* |
---|
| 1300 | #ifdef debug |
---|
| 1301 | G4cout<<"G4QDiffractionRatio::ProjFragment: *End* Sum="<<sum4M<<" =?= d4M="<<d4M<<G4endl; |
---|
| 1302 | #endif |
---|
| 1303 | return ResHV; // Result |
---|
| 1304 | } // End of ProjFragment |
---|
| 1305 | |
---|
| 1306 | // Calculates Single Diffraction Taarget Excitation Cross-Section (independent Units) |
---|
| 1307 | G4double G4QDiffractionRatio::GetTargSingDiffXS(G4double pIU, G4int pPDG, G4int Z, G4int N) |
---|
| 1308 | { |
---|
| 1309 | G4double mom=pIU/gigaelectronvolt; // Projectile momentum in GeV |
---|
| 1310 | if ( mom < 1. || (pPDG != 2212 && pPDG != 2112) ) |
---|
| 1311 | G4cerr<<"G4QDiffractionRatio::GetTargSingDiffXS isn't applicable p="<<mom<<" GeV, PDG=" |
---|
| 1312 | <<pPDG<<G4endl; |
---|
| 1313 | G4double A=Z+N; // A of the target |
---|
| 1314 | //return 4.5*std::pow(A,.364)*millibarn; // Result |
---|
| 1315 | return 3.7*std::pow(A,.364)*millibarn; // Result after mpi0 correction |
---|
| 1316 | |
---|
| 1317 | } // End of ProjFragment |
---|