| 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 | // 17.07.06 V. Grichine - first implementation
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| 28 | // 22.01.07 V.Ivanchenko - add interface with Z and A
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| 29 | // 05.03.07 V.Ivanchenko - add IfZAApplicable
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| 30 | //
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| 31 |
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| 32 | #include "G4GlauberGribovCrossSection.hh"
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| 33 |
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| 34 | #include "G4ParticleTable.hh"
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| 35 | #include "G4IonTable.hh"
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| 36 | #include "G4ParticleDefinition.hh"
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| 37 |
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| 38 | //////////////////////////////////////////////////////////////////////////////////////
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| 39 | //
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| 40 | //
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| 41 |
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| 42 | const G4double G4GlauberGribovCrossSection::fNeutronBarCorrectionTot[93] = {
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| 43 |
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| 44 | 1.0, 1.0, 1.118517e+00, 1.082002e+00, 1.116171e+00, 1.078747e+00, 1.061315e+00,
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| 45 | 1.058205e+00, 1.082663e+00, 1.068500e+00, 1.076912e+00, 1.083475e+00, 1.079117e+00,
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| 46 | 1.071856e+00, 1.071990e+00, 1.073774e+00, 1.079356e+00, 1.081314e+00, 1.082056e+00,
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| 47 | 1.090772e+00, 1.096776e+00, 1.095828e+00, 1.097678e+00, 1.099157e+00, 1.103677e+00,
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| 48 | 1.105132e+00, 1.109806e+00, 1.110816e+00, 1.117378e+00, 1.115165e+00, 1.115710e+00,
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| 49 | 1.111855e+00, 1.110482e+00, 1.110112e+00, 1.106676e+00, 1.108706e+00, 1.105549e+00,
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| 50 | 1.106318e+00, 1.106242e+00, 1.107672e+00, 1.107342e+00, 1.108119e+00, 1.106655e+00,
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| 51 | 1.102588e+00, 1.096657e+00, 1.092920e+00, 1.086629e+00, 1.083592e+00, 1.076030e+00,
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| 52 | 1.083777e+00, 1.089460e+00, 1.086545e+00, 1.079924e+00, 1.082218e+00, 1.077798e+00,
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| 53 | 1.077062e+00, 1.072825e+00, 1.072241e+00, 1.072104e+00, 1.072490e+00, 1.069829e+00,
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| 54 | 1.070398e+00, 1.065458e+00, 1.064968e+00, 1.060524e+00, 1.060048e+00, 1.057620e+00,
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| 55 | 1.056428e+00, 1.055366e+00, 1.055017e+00, 1.052304e+00, 1.051767e+00, 1.049728e+00,
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| 56 | 1.048745e+00, 1.047399e+00, 1.045876e+00, 1.042972e+00, 1.041824e+00, 1.039993e+00,
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| 57 | 1.039021e+00, 1.036627e+00, 1.034176e+00, 1.032526e+00, 1.033633e+00, 1.036107e+00,
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| 58 | 1.037803e+00, 1.031266e+00, 1.032991e+00, 1.033284e+00, 1.035015e+00, 1.033945e+00,
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| 59 | 1.037075e+00, 1.034721e+00
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| 60 |
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| 61 | };
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| 62 |
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| 63 | const G4double G4GlauberGribovCrossSection::fNeutronBarCorrectionIn[93] = {
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| 64 |
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| 65 | 1.0, 1.0, 1.167421e+00, 1.156250e+00, 1.205364e+00, 1.154225e+00, 1.120391e+00,
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| 66 | 1.124632e+00, 1.129460e+00, 1.107863e+00, 1.102152e+00, 1.104593e+00, 1.100285e+00,
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| 67 | 1.098450e+00, 1.092677e+00, 1.101124e+00, 1.106461e+00, 1.115049e+00, 1.123903e+00,
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| 68 | 1.126661e+00, 1.131259e+00, 1.133949e+00, 1.134185e+00, 1.133767e+00, 1.132813e+00,
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| 69 | 1.131515e+00, 1.130338e+00, 1.134171e+00, 1.139206e+00, 1.141474e+00, 1.142189e+00,
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| 70 | 1.140725e+00, 1.140100e+00, 1.139848e+00, 1.137674e+00, 1.138645e+00, 1.136339e+00,
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| 71 | 1.136439e+00, 1.135946e+00, 1.136431e+00, 1.135702e+00, 1.135703e+00, 1.134113e+00,
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| 72 | 1.131935e+00, 1.128381e+00, 1.126373e+00, 1.122453e+00, 1.120908e+00, 1.115953e+00,
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| 73 | 1.115947e+00, 1.114426e+00, 1.111749e+00, 1.106207e+00, 1.107494e+00, 1.103622e+00,
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| 74 | 1.102576e+00, 1.098816e+00, 1.097889e+00, 1.097306e+00, 1.097130e+00, 1.094578e+00,
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| 75 | 1.094552e+00, 1.090222e+00, 1.089358e+00, 1.085409e+00, 1.084560e+00, 1.082182e+00,
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| 76 | 1.080773e+00, 1.079464e+00, 1.078724e+00, 1.076121e+00, 1.075235e+00, 1.073159e+00,
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| 77 | 1.071920e+00, 1.070395e+00, 1.069503e+00, 1.067525e+00, 1.066919e+00, 1.065779e+00,
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| 78 | 1.065319e+00, 1.063730e+00, 1.062092e+00, 1.061085e+00, 1.059908e+00, 1.059815e+00,
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| 79 | 1.059109e+00, 1.051920e+00, 1.051258e+00, 1.049473e+00, 1.048823e+00, 1.045984e+00,
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| 80 | 1.046435e+00, 1.042614e+00
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| 81 |
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| 82 | };
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| 83 |
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| 84 | const G4double G4GlauberGribovCrossSection::fProtonBarCorrectionTot[93] = {
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| 85 |
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| 86 | 1.0, 1.0,
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| 87 | 1.118515e+00, 1.082000e+00, 1.116169e+00, 1.078745e+00, 1.061313e+00, 1.058203e+00,
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| 88 | 1.082661e+00, 1.068498e+00, 1.076910e+00, 1.083474e+00, 1.079115e+00, 1.071854e+00,
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| 89 | 1.071988e+00, 1.073772e+00, 1.079355e+00, 1.081312e+00, 1.082054e+00, 1.090770e+00,
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| 90 | 1.096774e+00, 1.095827e+00, 1.097677e+00, 1.099156e+00, 1.103676e+00, 1.105130e+00,
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| 91 | 1.109805e+00, 1.110814e+00, 1.117377e+00, 1.115163e+00, 1.115708e+00, 1.111853e+00,
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| 92 | 1.110480e+00, 1.110111e+00, 1.106674e+00, 1.108705e+00, 1.105548e+00, 1.106317e+00,
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| 93 | 1.106241e+00, 1.107671e+00, 1.107341e+00, 1.108118e+00, 1.106654e+00, 1.102586e+00,
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| 94 | 1.096655e+00, 1.092918e+00, 1.086628e+00, 1.083590e+00, 1.076028e+00, 1.083776e+00,
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| 95 | 1.089458e+00, 1.086543e+00, 1.079923e+00, 1.082216e+00, 1.077797e+00, 1.077061e+00,
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| 96 | 1.072824e+00, 1.072239e+00, 1.072103e+00, 1.072488e+00, 1.069828e+00, 1.070396e+00,
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| 97 | 1.065456e+00, 1.064966e+00, 1.060523e+00, 1.060047e+00, 1.057618e+00, 1.056427e+00,
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| 98 | 1.055365e+00, 1.055016e+00, 1.052303e+00, 1.051766e+00, 1.049727e+00, 1.048743e+00,
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| 99 | 1.047397e+00, 1.045875e+00, 1.042971e+00, 1.041823e+00, 1.039992e+00, 1.039019e+00,
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| 100 | 1.036626e+00, 1.034175e+00, 1.032525e+00, 1.033632e+00, 1.036106e+00, 1.037802e+00,
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| 101 | 1.031265e+00, 1.032990e+00, 1.033283e+00, 1.035014e+00, 1.033944e+00, 1.037074e+00,
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| 102 | 1.034720e+00
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| 103 |
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| 104 | };
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| 105 |
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| 106 | const G4double G4GlauberGribovCrossSection::fProtonBarCorrectionIn[93] = {
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| 107 |
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| 108 | 1.0, 1.0,
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| 109 | 1.167419e+00, 1.156248e+00, 1.205362e+00, 1.154224e+00, 1.120390e+00, 1.124630e+00,
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| 110 | 1.129459e+00, 1.107861e+00, 1.102151e+00, 1.104591e+00, 1.100284e+00, 1.098449e+00,
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| 111 | 1.092675e+00, 1.101122e+00, 1.106460e+00, 1.115048e+00, 1.123902e+00, 1.126659e+00,
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| 112 | 1.131258e+00, 1.133948e+00, 1.134183e+00, 1.133766e+00, 1.132812e+00, 1.131514e+00,
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| 113 | 1.130337e+00, 1.134170e+00, 1.139205e+00, 1.141472e+00, 1.142188e+00, 1.140724e+00,
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| 114 | 1.140099e+00, 1.139847e+00, 1.137672e+00, 1.138644e+00, 1.136338e+00, 1.136438e+00,
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| 115 | 1.135945e+00, 1.136429e+00, 1.135701e+00, 1.135702e+00, 1.134112e+00, 1.131934e+00,
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| 116 | 1.128380e+00, 1.126371e+00, 1.122452e+00, 1.120907e+00, 1.115952e+00, 1.115946e+00,
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| 117 | 1.114425e+00, 1.111748e+00, 1.106205e+00, 1.107493e+00, 1.103621e+00, 1.102575e+00,
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| 118 | 1.098815e+00, 1.097888e+00, 1.097305e+00, 1.097129e+00, 1.094577e+00, 1.094551e+00,
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| 119 | 1.090221e+00, 1.089357e+00, 1.085408e+00, 1.084559e+00, 1.082181e+00, 1.080772e+00,
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| 120 | 1.079463e+00, 1.078723e+00, 1.076120e+00, 1.075234e+00, 1.073158e+00, 1.071919e+00,
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| 121 | 1.070394e+00, 1.069502e+00, 1.067524e+00, 1.066918e+00, 1.065778e+00, 1.065318e+00,
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| 122 | 1.063729e+00, 1.062091e+00, 1.061084e+00, 1.059907e+00, 1.059814e+00, 1.059108e+00,
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| 123 | 1.051919e+00, 1.051257e+00, 1.049472e+00, 1.048822e+00, 1.045983e+00, 1.046434e+00,
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| 124 | 1.042613e+00
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| 125 |
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| 126 | };
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| 127 |
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| 128 |
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| 129 | const G4double G4GlauberGribovCrossSection::fPionPlusBarCorrectionTot[93] = {
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| 130 |
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| 131 | 1.0, 1.0,
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| 132 | 1.075927e+00, 1.074407e+00, 1.126098e+00, 1.100127e+00, 1.089742e+00, 1.083536e+00,
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| 133 | 1.089988e+00, 1.103566e+00, 1.096922e+00, 1.126573e+00, 1.132734e+00, 1.136512e+00,
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| 134 | 1.136629e+00, 1.133086e+00, 1.132428e+00, 1.129299e+00, 1.125622e+00, 1.126992e+00,
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| 135 | 1.127840e+00, 1.162670e+00, 1.160392e+00, 1.157864e+00, 1.157227e+00, 1.154627e+00,
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| 136 | 1.192555e+00, 1.197243e+00, 1.197911e+00, 1.200326e+00, 1.220053e+00, 1.215019e+00,
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| 137 | 1.211703e+00, 1.209080e+00, 1.204248e+00, 1.203328e+00, 1.198671e+00, 1.196840e+00,
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| 138 | 1.194392e+00, 1.193037e+00, 1.190408e+00, 1.188583e+00, 1.206127e+00, 1.210028e+00,
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| 139 | 1.206434e+00, 1.204456e+00, 1.200547e+00, 1.199058e+00, 1.200174e+00, 1.200276e+00,
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| 140 | 1.198912e+00, 1.213048e+00, 1.207160e+00, 1.208020e+00, 1.203814e+00, 1.202380e+00,
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| 141 | 1.198306e+00, 1.197002e+00, 1.196027e+00, 1.195449e+00, 1.192563e+00, 1.192135e+00,
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| 142 | 1.187556e+00, 1.186308e+00, 1.182124e+00, 1.180900e+00, 1.178224e+00, 1.176471e+00,
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| 143 | 1.174811e+00, 1.173702e+00, 1.170827e+00, 1.169581e+00, 1.167205e+00, 1.165626e+00,
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| 144 | 1.180244e+00, 1.177626e+00, 1.175121e+00, 1.173903e+00, 1.172192e+00, 1.171128e+00,
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| 145 | 1.168997e+00, 1.166826e+00, 1.164130e+00, 1.165412e+00, 1.165504e+00, 1.165020e+00,
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| 146 | 1.158462e+00, 1.158014e+00, 1.156519e+00, 1.156081e+00, 1.153602e+00, 1.154190e+00,
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| 147 | 1.152974e+00
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| 148 |
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| 149 | };
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| 150 |
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| 151 | const G4double G4GlauberGribovCrossSection::fPionPlusBarCorrectionIn[93] = {
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| 152 |
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| 153 | 1.0, 1.0,
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| 154 | 1.140246e+00, 1.097872e+00, 1.104301e+00, 1.068722e+00, 1.044495e+00, 1.062622e+00,
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| 155 | 1.047987e+00, 1.037032e+00, 1.035686e+00, 1.042870e+00, 1.052222e+00, 1.065100e+00,
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| 156 | 1.070480e+00, 1.078286e+00, 1.081488e+00, 1.089713e+00, 1.099105e+00, 1.098003e+00,
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| 157 | 1.102175e+00, 1.117707e+00, 1.121734e+00, 1.125229e+00, 1.126457e+00, 1.128905e+00,
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| 158 | 1.137312e+00, 1.126263e+00, 1.126459e+00, 1.115191e+00, 1.116986e+00, 1.117184e+00,
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| 159 | 1.117037e+00, 1.116777e+00, 1.115858e+00, 1.115745e+00, 1.114489e+00, 1.113993e+00,
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| 160 | 1.113226e+00, 1.112818e+00, 1.111890e+00, 1.111238e+00, 1.111209e+00, 1.111775e+00,
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| 161 | 1.110256e+00, 1.109414e+00, 1.107647e+00, 1.106980e+00, 1.106096e+00, 1.107331e+00,
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| 162 | 1.107849e+00, 1.106407e+00, 1.103426e+00, 1.103896e+00, 1.101756e+00, 1.101031e+00,
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| 163 | 1.098915e+00, 1.098260e+00, 1.097768e+00, 1.097487e+00, 1.095964e+00, 1.095773e+00,
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| 164 | 1.093348e+00, 1.092687e+00, 1.090465e+00, 1.089821e+00, 1.088394e+00, 1.087462e+00,
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| 165 | 1.086571e+00, 1.085997e+00, 1.084451e+00, 1.083798e+00, 1.082513e+00, 1.081670e+00,
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| 166 | 1.080735e+00, 1.075659e+00, 1.074341e+00, 1.073689e+00, 1.072787e+00, 1.072237e+00,
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| 167 | 1.071107e+00, 1.069955e+00, 1.064856e+00, 1.065873e+00, 1.065938e+00, 1.065694e+00,
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| 168 | 1.062192e+00, 1.061967e+00, 1.061180e+00, 1.060960e+00, 1.059646e+00, 1.059975e+00,
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| 169 | 1.059658e+00
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| 170 |
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| 171 | };
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| 172 |
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| 173 |
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| 174 | const G4double G4GlauberGribovCrossSection::fPionMinusBarCorrectionTot[93] = {
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| 175 |
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| 176 | 1.0, 1.0,
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| 177 | 1.075927e+00, 1.077959e+00, 1.129145e+00, 1.102088e+00, 1.089765e+00, 1.083542e+00,
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| 178 | 1.089995e+00, 1.104895e+00, 1.097154e+00, 1.127663e+00, 1.133063e+00, 1.137425e+00,
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| 179 | 1.136724e+00, 1.133859e+00, 1.132498e+00, 1.130276e+00, 1.127896e+00, 1.127656e+00,
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| 180 | 1.127905e+00, 1.164210e+00, 1.162259e+00, 1.160075e+00, 1.158978e+00, 1.156649e+00,
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| 181 | 1.194157e+00, 1.199177e+00, 1.198983e+00, 1.202325e+00, 1.221967e+00, 1.217548e+00,
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| 182 | 1.214389e+00, 1.211760e+00, 1.207335e+00, 1.206081e+00, 1.201766e+00, 1.199779e+00,
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| 183 | 1.197283e+00, 1.195706e+00, 1.193071e+00, 1.191115e+00, 1.208838e+00, 1.212681e+00,
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| 184 | 1.209235e+00, 1.207163e+00, 1.203451e+00, 1.201807e+00, 1.203283e+00, 1.203388e+00,
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| 185 | 1.202244e+00, 1.216509e+00, 1.211066e+00, 1.211504e+00, 1.207539e+00, 1.205991e+00,
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| 186 | 1.202143e+00, 1.200724e+00, 1.199595e+00, 1.198815e+00, 1.196025e+00, 1.195390e+00,
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| 187 | 1.191137e+00, 1.189791e+00, 1.185888e+00, 1.184575e+00, 1.181996e+00, 1.180229e+00,
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| 188 | 1.178545e+00, 1.177355e+00, 1.174616e+00, 1.173312e+00, 1.171016e+00, 1.169424e+00,
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| 189 | 1.184120e+00, 1.181478e+00, 1.179085e+00, 1.177817e+00, 1.176124e+00, 1.175003e+00,
|
|---|
| 190 | 1.172947e+00, 1.170858e+00, 1.168170e+00, 1.169397e+00, 1.169304e+00, 1.168706e+00,
|
|---|
| 191 | 1.162774e+00, 1.162217e+00, 1.160740e+00, 1.160196e+00, 1.157857e+00, 1.158220e+00,
|
|---|
| 192 | 1.157267e+00
|
|---|
| 193 | };
|
|---|
| 194 |
|
|---|
| 195 |
|
|---|
| 196 | const G4double G4GlauberGribovCrossSection::fPionMinusBarCorrectionIn[93] = {
|
|---|
| 197 |
|
|---|
| 198 | 1.0, 1.0,
|
|---|
| 199 | 1.140246e+00, 1.100898e+00, 1.106773e+00, 1.070289e+00, 1.044514e+00, 1.062628e+00,
|
|---|
| 200 | 1.047992e+00, 1.038041e+00, 1.035862e+00, 1.043679e+00, 1.052466e+00, 1.065780e+00,
|
|---|
| 201 | 1.070551e+00, 1.078869e+00, 1.081541e+00, 1.090455e+00, 1.100847e+00, 1.098511e+00,
|
|---|
| 202 | 1.102226e+00, 1.118865e+00, 1.123143e+00, 1.126904e+00, 1.127785e+00, 1.130444e+00,
|
|---|
| 203 | 1.138502e+00, 1.127678e+00, 1.127244e+00, 1.116634e+00, 1.118347e+00, 1.118988e+00,
|
|---|
| 204 | 1.118957e+00, 1.118696e+00, 1.118074e+00, 1.117722e+00, 1.116717e+00, 1.116111e+00,
|
|---|
| 205 | 1.115311e+00, 1.114745e+00, 1.113814e+00, 1.113069e+00, 1.113141e+00, 1.113660e+00,
|
|---|
| 206 | 1.112249e+00, 1.111343e+00, 1.109718e+00, 1.108942e+00, 1.108310e+00, 1.109549e+00,
|
|---|
| 207 | 1.110227e+00, 1.108846e+00, 1.106183e+00, 1.106354e+00, 1.104388e+00, 1.103583e+00,
|
|---|
| 208 | 1.101632e+00, 1.100896e+00, 1.100296e+00, 1.099873e+00, 1.098420e+00, 1.098082e+00,
|
|---|
| 209 | 1.095892e+00, 1.095162e+00, 1.093144e+00, 1.092438e+00, 1.091083e+00, 1.090142e+00,
|
|---|
| 210 | 1.089236e+00, 1.088604e+00, 1.087159e+00, 1.086465e+00, 1.085239e+00, 1.084388e+00,
|
|---|
| 211 | 1.083473e+00, 1.078373e+00, 1.077136e+00, 1.076450e+00, 1.075561e+00, 1.074973e+00,
|
|---|
| 212 | 1.073898e+00, 1.072806e+00, 1.067706e+00, 1.068684e+00, 1.068618e+00, 1.068294e+00,
|
|---|
| 213 | 1.065241e+00, 1.064939e+00, 1.064166e+00, 1.063872e+00, 1.062659e+00, 1.062828e+00,
|
|---|
| 214 | 1.062699e+00
|
|---|
| 215 |
|
|---|
| 216 | };
|
|---|
| 217 |
|
|---|
| 218 |
|
|---|
| 219 |
|
|---|
| 220 |
|
|---|
| 221 | ////////////////////////////////////////////////////////////////////////////////
|
|---|
| 222 | //
|
|---|
| 223 | //
|
|---|
| 224 |
|
|---|
| 225 | G4GlauberGribovCrossSection::G4GlauberGribovCrossSection()
|
|---|
| 226 | : fUpperLimit( 100000 * GeV ),
|
|---|
| 227 | fLowerLimit( 3 * GeV ),
|
|---|
| 228 | fRadiusConst( 1.08*fermi ) // 1.1, 1.3 ?
|
|---|
| 229 | {
|
|---|
| 230 | theGamma = G4Gamma::Gamma();
|
|---|
| 231 | theProton = G4Proton::Proton();
|
|---|
| 232 | theNeutron = G4Neutron::Neutron();
|
|---|
| 233 | theAProton = G4AntiProton::AntiProton();
|
|---|
| 234 | theANeutron = G4AntiNeutron::AntiNeutron();
|
|---|
| 235 | thePiPlus = G4PionPlus::PionPlus();
|
|---|
| 236 | thePiMinus = G4PionMinus::PionMinus();
|
|---|
| 237 | thePiZero = G4PionZero::PionZero();
|
|---|
| 238 | theKPlus = G4KaonPlus::KaonPlus();
|
|---|
| 239 | theKMinus = G4KaonMinus::KaonMinus();
|
|---|
| 240 | theK0S = G4KaonZeroShort::KaonZeroShort();
|
|---|
| 241 | theK0L = G4KaonZeroLong::KaonZeroLong();
|
|---|
| 242 | theL = G4Lambda::Lambda();
|
|---|
| 243 | theAntiL = G4AntiLambda::AntiLambda();
|
|---|
| 244 | theSPlus = G4SigmaPlus::SigmaPlus();
|
|---|
| 245 | theASPlus = G4AntiSigmaPlus::AntiSigmaPlus();
|
|---|
| 246 | theSMinus = G4SigmaMinus::SigmaMinus();
|
|---|
| 247 | theASMinus = G4AntiSigmaMinus::AntiSigmaMinus();
|
|---|
| 248 | theS0 = G4SigmaZero::SigmaZero();
|
|---|
| 249 | theAS0 = G4AntiSigmaZero::AntiSigmaZero();
|
|---|
| 250 | theXiMinus = G4XiMinus::XiMinus();
|
|---|
| 251 | theXi0 = G4XiZero::XiZero();
|
|---|
| 252 | theAXiMinus = G4AntiXiMinus::AntiXiMinus();
|
|---|
| 253 | theAXi0 = G4AntiXiZero::AntiXiZero();
|
|---|
| 254 | theOmega = G4OmegaMinus::OmegaMinus();
|
|---|
| 255 | theAOmega = G4AntiOmegaMinus::AntiOmegaMinus();
|
|---|
| 256 | theD = G4Deuteron::Deuteron();
|
|---|
| 257 | theT = G4Triton::Triton();
|
|---|
| 258 | theA = G4Alpha::Alpha();
|
|---|
| 259 | theHe3 = G4He3::He3();
|
|---|
| 260 | }
|
|---|
| 261 |
|
|---|
| 262 | ///////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 263 | //
|
|---|
| 264 | //
|
|---|
| 265 |
|
|---|
| 266 | G4GlauberGribovCrossSection::~G4GlauberGribovCrossSection()
|
|---|
| 267 | {
|
|---|
| 268 | }
|
|---|
| 269 |
|
|---|
| 270 |
|
|---|
| 271 | ////////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 272 | //
|
|---|
| 273 | //
|
|---|
| 274 |
|
|---|
| 275 |
|
|---|
| 276 | G4bool
|
|---|
| 277 | G4GlauberGribovCrossSection::IsApplicable(const G4DynamicParticle* aDP,
|
|---|
| 278 | const G4Element* anElement)
|
|---|
| 279 | {
|
|---|
| 280 | return IsZAApplicable(aDP, anElement->GetZ(), anElement->GetN());
|
|---|
| 281 | }
|
|---|
| 282 |
|
|---|
| 283 | ////////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 284 | //
|
|---|
| 285 | //
|
|---|
| 286 |
|
|---|
| 287 | G4bool
|
|---|
| 288 | G4GlauberGribovCrossSection::IsZAApplicable(const G4DynamicParticle* aDP,
|
|---|
| 289 | G4double Z, G4double)
|
|---|
| 290 | {
|
|---|
| 291 | G4bool applicable = false;
|
|---|
| 292 | // G4int baryonNumber = aDP->GetDefinition()->GetBaryonNumber();
|
|---|
| 293 | G4double kineticEnergy = aDP->GetKineticEnergy();
|
|---|
| 294 |
|
|---|
| 295 | const G4ParticleDefinition* theParticle = aDP->GetDefinition();
|
|---|
| 296 |
|
|---|
| 297 | if ( ( kineticEnergy >= fLowerLimit &&
|
|---|
| 298 | Z > 1.5 && // >= He
|
|---|
| 299 | ( theParticle == theAProton ||
|
|---|
| 300 | theParticle == theGamma ||
|
|---|
| 301 | theParticle == theKPlus ||
|
|---|
| 302 | theParticle == theKMinus ||
|
|---|
| 303 | theParticle == theSMinus) ) ||
|
|---|
| 304 |
|
|---|
| 305 | ( kineticEnergy >= fLowerLimit &&
|
|---|
| 306 | Z > 1.5 && // >= He
|
|---|
| 307 | ( theParticle == theProton ||
|
|---|
| 308 | theParticle == theNeutron ||
|
|---|
| 309 | theParticle == thePiPlus ||
|
|---|
| 310 | theParticle == thePiMinus ) ) ) applicable = true;
|
|---|
| 311 |
|
|---|
| 312 | return applicable;
|
|---|
| 313 | }
|
|---|
| 314 |
|
|---|
| 315 | ////////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 316 | //
|
|---|
| 317 | // Calculates total and inelastic Xsc, derives elastic as total - inelastic accordong to
|
|---|
| 318 | // Glauber model with Gribov correction calculated in the dipole approximation on
|
|---|
| 319 | // light cone. Gaussian density helps to calculate rest integrals of the model.
|
|---|
| 320 | // [1] B.Z. Kopeliovich, nucl-th/0306044
|
|---|
| 321 |
|
|---|
| 322 |
|
|---|
| 323 | G4double G4GlauberGribovCrossSection::
|
|---|
| 324 | GetCrossSection(const G4DynamicParticle* aParticle, const G4Element* anElement, G4double T)
|
|---|
| 325 | {
|
|---|
| 326 | return GetIsoZACrossSection(aParticle, anElement->GetZ(), anElement->GetN(), T);
|
|---|
| 327 | }
|
|---|
| 328 |
|
|---|
| 329 | ////////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 330 | //
|
|---|
| 331 | // Calculates total and inelastic Xsc, derives elastic as total - inelastic accordong to
|
|---|
| 332 | // Glauber model with Gribov correction calculated in the dipole approximation on
|
|---|
| 333 | // light cone. Gaussian density of point-like nucleons helps to calculate rest integrals of the model.
|
|---|
| 334 | // [1] B.Z. Kopeliovich, nucl-th/0306044 + simplification above
|
|---|
| 335 |
|
|---|
| 336 |
|
|---|
| 337 |
|
|---|
| 338 | G4double G4GlauberGribovCrossSection::
|
|---|
| 339 | GetIsoZACrossSection(const G4DynamicParticle* aParticle, G4double Z, G4double A, G4double)
|
|---|
| 340 | {
|
|---|
| 341 | G4double xsection, sigma, cofInelastic, cofTotal, nucleusSquare, ratio;
|
|---|
| 342 | G4double R = GetNucleusRadius(A);
|
|---|
| 343 |
|
|---|
| 344 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition();
|
|---|
| 345 |
|
|---|
| 346 | if( theParticle == theProton ||
|
|---|
| 347 | theParticle == theNeutron ||
|
|---|
| 348 | theParticle == thePiPlus ||
|
|---|
| 349 | theParticle == thePiMinus )
|
|---|
| 350 | {
|
|---|
| 351 | sigma = GetHadronNucleonXscNS(aParticle, A, Z);
|
|---|
| 352 | cofInelastic = 2.4;
|
|---|
| 353 | cofTotal = 2.0;
|
|---|
| 354 | }
|
|---|
| 355 | else
|
|---|
| 356 | {
|
|---|
| 357 | sigma = GetHadronNucleonXscNS(aParticle, A, Z);
|
|---|
| 358 | cofInelastic = 2.2;
|
|---|
| 359 | cofTotal = 2.0;
|
|---|
| 360 | }
|
|---|
| 361 | // cofInelastic = 2.0;
|
|---|
| 362 |
|
|---|
| 363 |
|
|---|
| 364 | nucleusSquare = cofTotal*pi*R*R; // basically 2piRR
|
|---|
| 365 | ratio = sigma/nucleusSquare;
|
|---|
| 366 |
|
|---|
| 367 | xsection = nucleusSquare*std::log( 1. + ratio );
|
|---|
| 368 |
|
|---|
| 369 | xsection *= GetParticleBarCorTot(theParticle, Z);
|
|---|
| 370 |
|
|---|
| 371 | fTotalXsc = xsection;
|
|---|
| 372 |
|
|---|
| 373 |
|
|---|
| 374 |
|
|---|
| 375 | fInelasticXsc = nucleusSquare*std::log( 1. + cofInelastic*ratio )/cofInelastic;
|
|---|
| 376 |
|
|---|
| 377 | fInelasticXsc *= GetParticleBarCorIn(theParticle, Z);
|
|---|
| 378 |
|
|---|
| 379 | fElasticXsc = fTotalXsc - fInelasticXsc;
|
|---|
| 380 |
|
|---|
| 381 |
|
|---|
| 382 | G4double difratio = ratio/(1.+ratio);
|
|---|
| 383 |
|
|---|
| 384 | fDiffractionXsc = 0.5*nucleusSquare*( difratio - std::log( 1. + difratio ) );
|
|---|
| 385 |
|
|---|
| 386 |
|
|---|
| 387 | sigma = GetHNinelasticXsc(aParticle, A, Z);
|
|---|
| 388 | ratio = sigma/nucleusSquare;
|
|---|
| 389 |
|
|---|
| 390 | fProductionXsc = nucleusSquare*std::log( 1. + cofInelastic*ratio )/cofInelastic;
|
|---|
| 391 |
|
|---|
| 392 | if (fElasticXsc < 0.) fElasticXsc = 0.;
|
|---|
| 393 |
|
|---|
| 394 | return xsection;
|
|---|
| 395 | }
|
|---|
| 396 |
|
|---|
| 397 | //////////////////////////////////////////////////////////////////////////
|
|---|
| 398 | //
|
|---|
| 399 | // Return single-diffraction/inelastic cross-section ratio
|
|---|
| 400 |
|
|---|
| 401 | G4double G4GlauberGribovCrossSection::
|
|---|
| 402 | GetRatioSD(const G4DynamicParticle* aParticle, G4double A, G4double Z)
|
|---|
| 403 | {
|
|---|
| 404 | G4double sigma, cofInelastic, cofTotal, nucleusSquare, ratio;
|
|---|
| 405 | G4double R = GetNucleusRadius(A);
|
|---|
| 406 |
|
|---|
| 407 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition();
|
|---|
| 408 |
|
|---|
| 409 | if( theParticle == theProton ||
|
|---|
| 410 | theParticle == theNeutron ||
|
|---|
| 411 | theParticle == thePiPlus ||
|
|---|
| 412 | theParticle == thePiMinus )
|
|---|
| 413 | {
|
|---|
| 414 | sigma = GetHadronNucleonXscNS(aParticle, A, Z);
|
|---|
| 415 | cofInelastic = 2.4;
|
|---|
| 416 | cofTotal = 2.0;
|
|---|
| 417 | }
|
|---|
| 418 | else
|
|---|
| 419 | {
|
|---|
| 420 | sigma = GetHadronNucleonXscNS(aParticle, A, Z);
|
|---|
| 421 | cofInelastic = 2.2;
|
|---|
| 422 | cofTotal = 2.0;
|
|---|
| 423 | }
|
|---|
| 424 | nucleusSquare = cofTotal*pi*R*R; // basically 2piRR
|
|---|
| 425 | ratio = sigma/nucleusSquare;
|
|---|
| 426 |
|
|---|
| 427 | fInelasticXsc = nucleusSquare*std::log( 1. + cofInelastic*ratio )/cofInelastic;
|
|---|
| 428 |
|
|---|
| 429 | G4double difratio = ratio/(1.+ratio);
|
|---|
| 430 |
|
|---|
| 431 | fDiffractionXsc = 0.5*nucleusSquare*( difratio - std::log( 1. + difratio ) );
|
|---|
| 432 |
|
|---|
| 433 | if (fInelasticXsc > 0.) ratio = fDiffractionXsc/fInelasticXsc;
|
|---|
| 434 | else ratio = 0.;
|
|---|
| 435 |
|
|---|
| 436 | return ratio;
|
|---|
| 437 | }
|
|---|
| 438 |
|
|---|
| 439 | //////////////////////////////////////////////////////////////////////////
|
|---|
| 440 | //
|
|---|
| 441 | // Return suasi-elastic/inelastic cross-section ratio
|
|---|
| 442 |
|
|---|
| 443 | G4double G4GlauberGribovCrossSection::
|
|---|
| 444 | GetRatioQE(const G4DynamicParticle* aParticle, G4double A, G4double Z)
|
|---|
| 445 | {
|
|---|
| 446 | G4double sigma, cofInelastic, cofTotal, nucleusSquare, ratio;
|
|---|
| 447 | G4double R = GetNucleusRadius(A);
|
|---|
| 448 |
|
|---|
| 449 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition();
|
|---|
| 450 |
|
|---|
| 451 | if( theParticle == theProton ||
|
|---|
| 452 | theParticle == theNeutron ||
|
|---|
| 453 | theParticle == thePiPlus ||
|
|---|
| 454 | theParticle == thePiMinus )
|
|---|
| 455 | {
|
|---|
| 456 | sigma = GetHadronNucleonXscNS(aParticle, A, Z);
|
|---|
| 457 | cofInelastic = 2.4;
|
|---|
| 458 | cofTotal = 2.0;
|
|---|
| 459 | }
|
|---|
| 460 | else
|
|---|
| 461 | {
|
|---|
| 462 | sigma = GetHadronNucleonXscNS(aParticle, A, Z);
|
|---|
| 463 | cofInelastic = 2.2;
|
|---|
| 464 | cofTotal = 2.0;
|
|---|
| 465 | }
|
|---|
| 466 | nucleusSquare = cofTotal*pi*R*R; // basically 2piRR
|
|---|
| 467 | ratio = sigma/nucleusSquare;
|
|---|
| 468 |
|
|---|
| 469 | fInelasticXsc = nucleusSquare*std::log( 1. + cofInelastic*ratio )/cofInelastic;
|
|---|
| 470 |
|
|---|
| 471 | sigma = GetHNinelasticXsc(aParticle, A, Z);
|
|---|
| 472 | ratio = sigma/nucleusSquare;
|
|---|
| 473 |
|
|---|
| 474 | fProductionXsc = nucleusSquare*std::log( 1. + cofInelastic*ratio )/cofInelastic;
|
|---|
| 475 |
|
|---|
| 476 | if (fInelasticXsc > fProductionXsc) ratio = (fInelasticXsc-fProductionXsc)/fInelasticXsc;
|
|---|
| 477 | else ratio = 0.;
|
|---|
| 478 | if ( ratio < 0. ) ratio = 0.;
|
|---|
| 479 |
|
|---|
| 480 | return ratio;
|
|---|
| 481 | }
|
|---|
| 482 |
|
|---|
| 483 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 484 | //
|
|---|
| 485 | // Returns hadron-nucleon Xsc according to differnt parametrisations:
|
|---|
| 486 | // [2] E. Levin, hep-ph/9710546
|
|---|
| 487 | // [3] U. Dersch, et al, hep-ex/9910052
|
|---|
| 488 | // [4] M.J. Longo, et al, Phys.Rev.Lett. 33 (1974) 725
|
|---|
| 489 |
|
|---|
| 490 | G4double
|
|---|
| 491 | G4GlauberGribovCrossSection::GetHadronNucleonXsc(const G4DynamicParticle* aParticle,
|
|---|
| 492 | const G4Element* anElement )
|
|---|
| 493 | {
|
|---|
| 494 | G4double At = anElement->GetN(); // number of nucleons
|
|---|
| 495 | G4double Zt = anElement->GetZ(); // number of protons
|
|---|
| 496 |
|
|---|
| 497 |
|
|---|
| 498 | return GetHadronNucleonXsc( aParticle, At, Zt );
|
|---|
| 499 | }
|
|---|
| 500 |
|
|---|
| 501 |
|
|---|
| 502 |
|
|---|
| 503 |
|
|---|
| 504 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 505 | //
|
|---|
| 506 | // Returns hadron-nucleon Xsc according to differnt parametrisations:
|
|---|
| 507 | // [2] E. Levin, hep-ph/9710546
|
|---|
| 508 | // [3] U. Dersch, et al, hep-ex/9910052
|
|---|
| 509 | // [4] M.J. Longo, et al, Phys.Rev.Lett. 33 (1974) 725
|
|---|
| 510 |
|
|---|
| 511 | G4double
|
|---|
| 512 | G4GlauberGribovCrossSection::GetHadronNucleonXsc(const G4DynamicParticle* aParticle,
|
|---|
| 513 | G4double At, G4double Zt )
|
|---|
| 514 | {
|
|---|
| 515 | G4double xsection;
|
|---|
| 516 |
|
|---|
| 517 |
|
|---|
| 518 | G4double targ_mass = G4ParticleTable::GetParticleTable()->
|
|---|
| 519 | GetIonTable()->GetIonMass( G4int(Zt+0.5) , G4int(At+0.5) );
|
|---|
| 520 |
|
|---|
| 521 | targ_mass = 0.939*GeV; // ~mean neutron and proton ???
|
|---|
| 522 |
|
|---|
| 523 | G4double proj_mass = aParticle->GetMass();
|
|---|
| 524 | G4double proj_momentum = aParticle->GetMomentum().mag();
|
|---|
| 525 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum );
|
|---|
| 526 |
|
|---|
| 527 | sMand /= GeV*GeV; // in GeV for parametrisation
|
|---|
| 528 | proj_momentum /= GeV;
|
|---|
| 529 |
|
|---|
| 530 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition();
|
|---|
| 531 |
|
|---|
| 532 |
|
|---|
| 533 | if(theParticle == theGamma)
|
|---|
| 534 | {
|
|---|
| 535 | xsection = At*(0.0677*std::pow(sMand,0.0808) + 0.129*std::pow(sMand,-0.4525));
|
|---|
| 536 | }
|
|---|
| 537 | else if(theParticle == theNeutron) // as proton ???
|
|---|
| 538 | {
|
|---|
| 539 | xsection = At*(21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525));
|
|---|
| 540 | }
|
|---|
| 541 | else if(theParticle == theProton)
|
|---|
| 542 | {
|
|---|
| 543 | xsection = At*(21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525));
|
|---|
| 544 | // xsection = At*( 49.51*std::pow(sMand,-0.097) + 0.314*std::log(sMand)*std::log(sMand) );
|
|---|
| 545 | // xsection = At*( 38.4 + 0.85*std::abs(std::pow(log(sMand),1.47)) );
|
|---|
| 546 | }
|
|---|
| 547 | else if(theParticle == theAProton)
|
|---|
| 548 | {
|
|---|
| 549 | xsection = At*( 21.70*std::pow(sMand,0.0808) + 98.39*std::pow(sMand,-0.4525));
|
|---|
| 550 | }
|
|---|
| 551 | else if(theParticle == thePiPlus)
|
|---|
| 552 | {
|
|---|
| 553 | xsection = At*(13.63*std::pow(sMand,0.0808) + 27.56*std::pow(sMand,-0.4525));
|
|---|
| 554 | }
|
|---|
| 555 | else if(theParticle == thePiMinus)
|
|---|
| 556 | {
|
|---|
| 557 | // xsection = At*( 55.2*std::pow(sMand,-0.255) + 0.346*std::log(sMand)*std::log(sMand) );
|
|---|
| 558 | xsection = At*(13.63*std::pow(sMand,0.0808) + 36.02*std::pow(sMand,-0.4525));
|
|---|
| 559 | }
|
|---|
| 560 | else if(theParticle == theKPlus)
|
|---|
| 561 | {
|
|---|
| 562 | xsection = At*(11.82*std::pow(sMand,0.0808) + 8.15*std::pow(sMand,-0.4525));
|
|---|
| 563 | }
|
|---|
| 564 | else if(theParticle == theKMinus)
|
|---|
| 565 | {
|
|---|
| 566 | xsection = At*(11.82*std::pow(sMand,0.0808) + 26.36*std::pow(sMand,-0.4525));
|
|---|
| 567 | }
|
|---|
| 568 | else // as proton ???
|
|---|
| 569 | {
|
|---|
| 570 | xsection = At*(21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525));
|
|---|
| 571 | }
|
|---|
| 572 | xsection *= millibarn;
|
|---|
| 573 | return xsection;
|
|---|
| 574 | }
|
|---|
| 575 |
|
|---|
| 576 |
|
|---|
| 577 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 578 | //
|
|---|
| 579 | // Returns hadron-nucleon Xsc according to PDG parametrisation (2005):
|
|---|
| 580 | // http://pdg.lbl.gov/2006/reviews/hadronicrpp.pdf
|
|---|
| 581 |
|
|---|
| 582 | G4double
|
|---|
| 583 | G4GlauberGribovCrossSection::GetHadronNucleonXscPDG(const G4DynamicParticle* aParticle,
|
|---|
| 584 | const G4Element* anElement )
|
|---|
| 585 | {
|
|---|
| 586 | G4double At = anElement->GetN(); // number of nucleons
|
|---|
| 587 | G4double Zt = anElement->GetZ(); // number of protons
|
|---|
| 588 |
|
|---|
| 589 |
|
|---|
| 590 | return GetHadronNucleonXscPDG( aParticle, At, Zt );
|
|---|
| 591 | }
|
|---|
| 592 |
|
|---|
| 593 |
|
|---|
| 594 |
|
|---|
| 595 |
|
|---|
| 596 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 597 | //
|
|---|
| 598 | // Returns hadron-nucleon Xsc according to PDG parametrisation (2005):
|
|---|
| 599 | // http://pdg.lbl.gov/2006/reviews/hadronicrpp.pdf
|
|---|
| 600 | // At = number of nucleons, Zt = number of protons
|
|---|
| 601 |
|
|---|
| 602 | G4double
|
|---|
| 603 | G4GlauberGribovCrossSection::GetHadronNucleonXscPDG(const G4DynamicParticle* aParticle,
|
|---|
| 604 | G4double At, G4double Zt )
|
|---|
| 605 | {
|
|---|
| 606 | G4double xsection;
|
|---|
| 607 |
|
|---|
| 608 | G4double Nt = At-Zt; // number of neutrons
|
|---|
| 609 | if (Nt < 0.) Nt = 0.;
|
|---|
| 610 |
|
|---|
| 611 |
|
|---|
| 612 | G4double targ_mass = G4ParticleTable::GetParticleTable()->
|
|---|
| 613 | GetIonTable()->GetIonMass( G4int(Zt+0.5) , G4int(At+0.5) );
|
|---|
| 614 |
|
|---|
| 615 | targ_mass = 0.939*GeV; // ~mean neutron and proton ???
|
|---|
| 616 |
|
|---|
| 617 | G4double proj_mass = aParticle->GetMass();
|
|---|
| 618 | G4double proj_momentum = aParticle->GetMomentum().mag();
|
|---|
| 619 |
|
|---|
| 620 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum );
|
|---|
| 621 |
|
|---|
| 622 | sMand /= GeV*GeV; // in GeV for parametrisation
|
|---|
| 623 |
|
|---|
| 624 | // General PDG fit constants
|
|---|
| 625 |
|
|---|
| 626 | G4double s0 = 5.38*5.38; // in Gev^2
|
|---|
| 627 | G4double eta1 = 0.458;
|
|---|
| 628 | G4double eta2 = 0.458;
|
|---|
| 629 | G4double B = 0.308;
|
|---|
| 630 |
|
|---|
| 631 |
|
|---|
| 632 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition();
|
|---|
| 633 |
|
|---|
| 634 |
|
|---|
| 635 | if(theParticle == theNeutron) // proton-neutron fit
|
|---|
| 636 | {
|
|---|
| 637 | xsection = Zt*( 35.80 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 638 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2));
|
|---|
| 639 | xsection += Nt*( 35.45 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 640 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2)); // pp for nn
|
|---|
| 641 | }
|
|---|
| 642 | else if(theParticle == theProton)
|
|---|
| 643 | {
|
|---|
| 644 |
|
|---|
| 645 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 646 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2));
|
|---|
| 647 |
|
|---|
| 648 | xsection += Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 649 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2));
|
|---|
| 650 | }
|
|---|
| 651 | else if(theParticle == theAProton)
|
|---|
| 652 | {
|
|---|
| 653 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 654 | + 42.53*std::pow(sMand,-eta1) + 33.34*std::pow(sMand,-eta2));
|
|---|
| 655 |
|
|---|
| 656 | xsection += Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 657 | + 40.15*std::pow(sMand,-eta1) + 30.*std::pow(sMand,-eta2));
|
|---|
| 658 | }
|
|---|
| 659 | else if(theParticle == thePiPlus)
|
|---|
| 660 | {
|
|---|
| 661 | xsection = At*( 20.86 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 662 | + 19.24*std::pow(sMand,-eta1) - 6.03*std::pow(sMand,-eta2));
|
|---|
| 663 | }
|
|---|
| 664 | else if(theParticle == thePiMinus)
|
|---|
| 665 | {
|
|---|
| 666 | xsection = At*( 20.86 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 667 | + 19.24*std::pow(sMand,-eta1) + 6.03*std::pow(sMand,-eta2));
|
|---|
| 668 | }
|
|---|
| 669 | else if(theParticle == theKPlus)
|
|---|
| 670 | {
|
|---|
| 671 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 672 | + 7.14*std::pow(sMand,-eta1) - 13.45*std::pow(sMand,-eta2));
|
|---|
| 673 |
|
|---|
| 674 | xsection += Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 675 | + 5.17*std::pow(sMand,-eta1) - 7.23*std::pow(sMand,-eta2));
|
|---|
| 676 | }
|
|---|
| 677 | else if(theParticle == theKMinus)
|
|---|
| 678 | {
|
|---|
| 679 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 680 | + 7.14*std::pow(sMand,-eta1) + 13.45*std::pow(sMand,-eta2));
|
|---|
| 681 |
|
|---|
| 682 | xsection += Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 683 | + 5.17*std::pow(sMand,-eta1) + 7.23*std::pow(sMand,-eta2));
|
|---|
| 684 | }
|
|---|
| 685 | else if(theParticle == theSMinus)
|
|---|
| 686 | {
|
|---|
| 687 | xsection = At*( 35.20 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 688 | - 199.*std::pow(sMand,-eta1) + 264.*std::pow(sMand,-eta2));
|
|---|
| 689 | }
|
|---|
| 690 | else if(theParticle == theGamma) // modify later on
|
|---|
| 691 | {
|
|---|
| 692 | xsection = At*( 0.0 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 693 | + 0.032*std::pow(sMand,-eta1) - 0.0*std::pow(sMand,-eta2));
|
|---|
| 694 |
|
|---|
| 695 | }
|
|---|
| 696 | else // as proton ???
|
|---|
| 697 | {
|
|---|
| 698 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 699 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2));
|
|---|
| 700 |
|
|---|
| 701 | xsection += Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 702 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2));
|
|---|
| 703 | }
|
|---|
| 704 | xsection *= millibarn; // parametrised in mb
|
|---|
| 705 | return xsection;
|
|---|
| 706 | }
|
|---|
| 707 |
|
|---|
| 708 |
|
|---|
| 709 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 710 | //
|
|---|
| 711 | // Returns hadron-nucleon cross-section based on N. Starkov parametrisation of
|
|---|
| 712 | // data from mainly http://wwwppds.ihep.su:8001/c5-6A.html database
|
|---|
| 713 |
|
|---|
| 714 | G4double
|
|---|
| 715 | G4GlauberGribovCrossSection::GetHadronNucleonXscNS(const G4DynamicParticle* aParticle,
|
|---|
| 716 | const G4Element* anElement )
|
|---|
| 717 | {
|
|---|
| 718 | G4double At = anElement->GetN(); // number of nucleons
|
|---|
| 719 | G4double Zt = anElement->GetZ(); // number of protons
|
|---|
| 720 |
|
|---|
| 721 |
|
|---|
| 722 | return GetHadronNucleonXscNS( aParticle, At, Zt );
|
|---|
| 723 | }
|
|---|
| 724 |
|
|---|
| 725 |
|
|---|
| 726 |
|
|---|
| 727 |
|
|---|
| 728 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 729 | //
|
|---|
| 730 | // Returns hadron-nucleon cross-section based on N. Starkov parametrisation of
|
|---|
| 731 | // data from mainly http://wwwppds.ihep.su:8001/c5-6A.html database
|
|---|
| 732 |
|
|---|
| 733 | G4double
|
|---|
| 734 | G4GlauberGribovCrossSection::GetHadronNucleonXscNS(const G4DynamicParticle* aParticle,
|
|---|
| 735 | G4double At, G4double Zt )
|
|---|
| 736 | {
|
|---|
| 737 | G4double xsection(0), Delta, A0, B0;
|
|---|
| 738 | G4double hpXsc(0);
|
|---|
| 739 | G4double hnXsc(0);
|
|---|
| 740 |
|
|---|
| 741 | G4double Nt = At-Zt; // number of neutrons
|
|---|
| 742 | if (Nt < 0.) Nt = 0.;
|
|---|
| 743 |
|
|---|
| 744 |
|
|---|
| 745 | G4double targ_mass = G4ParticleTable::GetParticleTable()->
|
|---|
| 746 | GetIonTable()->GetIonMass( G4int(Zt+0.5) , G4int(At+0.5) );
|
|---|
| 747 |
|
|---|
| 748 | targ_mass = 0.939*GeV; // ~mean neutron and proton ???
|
|---|
| 749 |
|
|---|
| 750 | G4double proj_mass = aParticle->GetMass();
|
|---|
| 751 | G4double proj_energy = aParticle->GetTotalEnergy();
|
|---|
| 752 | G4double proj_momentum = aParticle->GetMomentum().mag();
|
|---|
| 753 |
|
|---|
| 754 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum );
|
|---|
| 755 |
|
|---|
| 756 | sMand /= GeV*GeV; // in GeV for parametrisation
|
|---|
| 757 | proj_momentum /= GeV;
|
|---|
| 758 | proj_energy /= GeV;
|
|---|
| 759 | proj_mass /= GeV;
|
|---|
| 760 |
|
|---|
| 761 | // General PDG fit constants
|
|---|
| 762 |
|
|---|
| 763 | G4double s0 = 5.38*5.38; // in Gev^2
|
|---|
| 764 | G4double eta1 = 0.458;
|
|---|
| 765 | G4double eta2 = 0.458;
|
|---|
| 766 | G4double B = 0.308;
|
|---|
| 767 |
|
|---|
| 768 |
|
|---|
| 769 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition();
|
|---|
| 770 |
|
|---|
| 771 |
|
|---|
| 772 | if(theParticle == theNeutron)
|
|---|
| 773 | {
|
|---|
| 774 | if( proj_momentum >= 10.)
|
|---|
| 775 | // if( proj_momentum >= 2.)
|
|---|
| 776 | {
|
|---|
| 777 | Delta = 1.;
|
|---|
| 778 |
|
|---|
| 779 | if( proj_energy < 40. ) Delta = 0.916+0.0021*proj_energy;
|
|---|
| 780 |
|
|---|
| 781 | if(proj_momentum >= 10.)
|
|---|
| 782 | {
|
|---|
| 783 | B0 = 7.5;
|
|---|
| 784 | A0 = 100. - B0*std::log(3.0e7);
|
|---|
| 785 |
|
|---|
| 786 | xsection = A0 + B0*std::log(proj_energy) - 11
|
|---|
| 787 | + 103*std::pow(2*0.93827*proj_energy + proj_mass*proj_mass+
|
|---|
| 788 | 0.93827*0.93827,-0.165); // mb
|
|---|
| 789 | }
|
|---|
| 790 | xsection *= Zt + Nt;
|
|---|
| 791 | }
|
|---|
| 792 | else
|
|---|
| 793 | {
|
|---|
| 794 | // nn to be pp
|
|---|
| 795 |
|
|---|
| 796 | if( proj_momentum < 0.73 )
|
|---|
| 797 | {
|
|---|
| 798 | hnXsc = 23 + 50*( std::pow( std::log(0.73/proj_momentum), 3.5 ) );
|
|---|
| 799 | }
|
|---|
| 800 | else if( proj_momentum < 1.05 )
|
|---|
| 801 | {
|
|---|
| 802 | hnXsc = 23 + 40*(std::log(proj_momentum/0.73))*
|
|---|
| 803 | (std::log(proj_momentum/0.73));
|
|---|
| 804 | }
|
|---|
| 805 | else // if( proj_momentum < 10. )
|
|---|
| 806 | {
|
|---|
| 807 | hnXsc = 39.0+
|
|---|
| 808 | 75*(proj_momentum - 1.2)/(std::pow(proj_momentum,3.0) + 0.15);
|
|---|
| 809 | }
|
|---|
| 810 | // pn to be np
|
|---|
| 811 |
|
|---|
| 812 | if( proj_momentum < 0.8 )
|
|---|
| 813 | {
|
|---|
| 814 | hpXsc = 33+30*std::pow(std::log(proj_momentum/1.3),4.0);
|
|---|
| 815 | }
|
|---|
| 816 | else if( proj_momentum < 1.4 )
|
|---|
| 817 | {
|
|---|
| 818 | hpXsc = 33+30*std::pow(std::log(proj_momentum/0.95),2.0);
|
|---|
| 819 | }
|
|---|
| 820 | else // if( proj_momentum < 10. )
|
|---|
| 821 | {
|
|---|
| 822 | hpXsc = 33.3+
|
|---|
| 823 | 20.8*(std::pow(proj_momentum,2.0)-1.35)/
|
|---|
| 824 | (std::pow(proj_momentum,2.50)+0.95);
|
|---|
| 825 | }
|
|---|
| 826 | xsection = hpXsc*Zt + hnXsc*Nt;
|
|---|
| 827 | }
|
|---|
| 828 | }
|
|---|
| 829 | else if(theParticle == theProton)
|
|---|
| 830 | {
|
|---|
| 831 | if( proj_momentum >= 10.)
|
|---|
| 832 | // if( proj_momentum >= 2.)
|
|---|
| 833 | {
|
|---|
| 834 | Delta = 1.;
|
|---|
| 835 |
|
|---|
| 836 | if( proj_energy < 40. ) Delta = 0.916+0.0021*proj_energy;
|
|---|
| 837 |
|
|---|
| 838 | if(proj_momentum >= 10.)
|
|---|
| 839 | {
|
|---|
| 840 | B0 = 7.5;
|
|---|
| 841 | A0 = 100. - B0*std::log(3.0e7);
|
|---|
| 842 |
|
|---|
| 843 | xsection = A0 + B0*std::log(proj_energy) - 11
|
|---|
| 844 | + 103*std::pow(2*0.93827*proj_energy + proj_mass*proj_mass+
|
|---|
| 845 | 0.93827*0.93827,-0.165); // mb
|
|---|
| 846 | }
|
|---|
| 847 | xsection *= Zt + Nt;
|
|---|
| 848 | }
|
|---|
| 849 | else
|
|---|
| 850 | {
|
|---|
| 851 | // pp
|
|---|
| 852 |
|
|---|
| 853 | if( proj_momentum < 0.73 )
|
|---|
| 854 | {
|
|---|
| 855 | hpXsc = 23 + 50*( std::pow( std::log(0.73/proj_momentum), 3.5 ) );
|
|---|
| 856 | }
|
|---|
| 857 | else if( proj_momentum < 1.05 )
|
|---|
| 858 | {
|
|---|
| 859 | hpXsc = 23 + 40*(std::log(proj_momentum/0.73))*
|
|---|
| 860 | (std::log(proj_momentum/0.73));
|
|---|
| 861 | }
|
|---|
| 862 | else // if( proj_momentum < 10. )
|
|---|
| 863 | {
|
|---|
| 864 | hpXsc = 39.0+
|
|---|
| 865 | 75*(proj_momentum - 1.2)/(std::pow(proj_momentum,3.0) + 0.15);
|
|---|
| 866 | }
|
|---|
| 867 | // pn to be np
|
|---|
| 868 |
|
|---|
| 869 | if( proj_momentum < 0.8 )
|
|---|
| 870 | {
|
|---|
| 871 | hnXsc = 33+30*std::pow(std::log(proj_momentum/1.3),4.0);
|
|---|
| 872 | }
|
|---|
| 873 | else if( proj_momentum < 1.4 )
|
|---|
| 874 | {
|
|---|
| 875 | hnXsc = 33+30*std::pow(std::log(proj_momentum/0.95),2.0);
|
|---|
| 876 | }
|
|---|
| 877 | else // if( proj_momentum < 10. )
|
|---|
| 878 | {
|
|---|
| 879 | hnXsc = 33.3+
|
|---|
| 880 | 20.8*(std::pow(proj_momentum,2.0)-1.35)/
|
|---|
| 881 | (std::pow(proj_momentum,2.50)+0.95);
|
|---|
| 882 | }
|
|---|
| 883 | xsection = hpXsc*Zt + hnXsc*Nt;
|
|---|
| 884 | // xsection = hpXsc*(Zt + Nt);
|
|---|
| 885 | // xsection = hnXsc*(Zt + Nt);
|
|---|
| 886 | }
|
|---|
| 887 | // xsection *= 0.95;
|
|---|
| 888 | }
|
|---|
| 889 | else if(theParticle == theAProton)
|
|---|
| 890 | {
|
|---|
| 891 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 892 | + 42.53*std::pow(sMand,-eta1) + 33.34*std::pow(sMand,-eta2));
|
|---|
| 893 |
|
|---|
| 894 | xsection += Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 895 | + 40.15*std::pow(sMand,-eta1) + 30.*std::pow(sMand,-eta2));
|
|---|
| 896 | }
|
|---|
| 897 | else if(theParticle == thePiPlus)
|
|---|
| 898 | {
|
|---|
| 899 | if(proj_momentum < 0.4)
|
|---|
| 900 | {
|
|---|
| 901 | G4double Ex3 = 180*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.085/0.085);
|
|---|
| 902 | hpXsc = Ex3+20.0;
|
|---|
| 903 | }
|
|---|
| 904 | else if(proj_momentum < 1.15)
|
|---|
| 905 | {
|
|---|
| 906 | G4double Ex4 = 88*(std::log(proj_momentum/0.75))*(std::log(proj_momentum/0.75));
|
|---|
| 907 | hpXsc = Ex4+14.0;
|
|---|
| 908 | }
|
|---|
| 909 | else if(proj_momentum < 3.5)
|
|---|
| 910 | {
|
|---|
| 911 | G4double Ex1 = 3.2*std::exp(-(proj_momentum-2.55)*(proj_momentum-2.55)/0.55/0.55);
|
|---|
| 912 | G4double Ex2 = 12*std::exp(-(proj_momentum-1.47)*(proj_momentum-1.47)/0.225/0.225);
|
|---|
| 913 | hpXsc = Ex1+Ex2+27.5;
|
|---|
| 914 | }
|
|---|
| 915 | else // if(proj_momentum > 3.5) // mb
|
|---|
| 916 | {
|
|---|
| 917 | hpXsc = 10.6+2.*std::log(proj_energy)+25*std::pow(proj_energy,-0.43);
|
|---|
| 918 | }
|
|---|
| 919 | // pi+n = pi-p??
|
|---|
| 920 |
|
|---|
| 921 | if(proj_momentum < 0.37)
|
|---|
| 922 | {
|
|---|
| 923 | hnXsc = 28.0 + 40*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.07/0.07);
|
|---|
| 924 | }
|
|---|
| 925 | else if(proj_momentum<0.65)
|
|---|
| 926 | {
|
|---|
| 927 | hnXsc = 26+110*(std::log(proj_momentum/0.48))*(std::log(proj_momentum/0.48));
|
|---|
| 928 | }
|
|---|
| 929 | else if(proj_momentum<1.3)
|
|---|
| 930 | {
|
|---|
| 931 | hnXsc = 36.1+
|
|---|
| 932 | 10*std::exp(-(proj_momentum-0.72)*(proj_momentum-0.72)/0.06/0.06)+
|
|---|
| 933 | 24*std::exp(-(proj_momentum-1.015)*(proj_momentum-1.015)/0.075/0.075);
|
|---|
| 934 | }
|
|---|
| 935 | else if(proj_momentum<3.0)
|
|---|
| 936 | {
|
|---|
| 937 | hnXsc = 36.1+0.079-4.313*std::log(proj_momentum)+
|
|---|
| 938 | 3*std::exp(-(proj_momentum-2.1)*(proj_momentum-2.1)/0.4/0.4)+
|
|---|
| 939 | 1.5*std::exp(-(proj_momentum-1.4)*(proj_momentum-1.4)/0.12/0.12);
|
|---|
| 940 | }
|
|---|
| 941 | else // mb
|
|---|
| 942 | {
|
|---|
| 943 | hnXsc = 10.6+2*std::log(proj_energy)+30*std::pow(proj_energy,-0.43);
|
|---|
| 944 | }
|
|---|
| 945 | xsection = hpXsc*Zt + hnXsc*Nt;
|
|---|
| 946 | }
|
|---|
| 947 | else if(theParticle == thePiMinus)
|
|---|
| 948 | {
|
|---|
| 949 | // pi-n = pi+p??
|
|---|
| 950 |
|
|---|
| 951 | if(proj_momentum < 0.4)
|
|---|
| 952 | {
|
|---|
| 953 | G4double Ex3 = 180*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.085/0.085);
|
|---|
| 954 | hnXsc = Ex3+20.0;
|
|---|
| 955 | }
|
|---|
| 956 | else if(proj_momentum < 1.15)
|
|---|
| 957 | {
|
|---|
| 958 | G4double Ex4 = 88*(std::log(proj_momentum/0.75))*(std::log(proj_momentum/0.75));
|
|---|
| 959 | hnXsc = Ex4+14.0;
|
|---|
| 960 | }
|
|---|
| 961 | else if(proj_momentum < 3.5)
|
|---|
| 962 | {
|
|---|
| 963 | G4double Ex1 = 3.2*std::exp(-(proj_momentum-2.55)*(proj_momentum-2.55)/0.55/0.55);
|
|---|
| 964 | G4double Ex2 = 12*std::exp(-(proj_momentum-1.47)*(proj_momentum-1.47)/0.225/0.225);
|
|---|
| 965 | hnXsc = Ex1+Ex2+27.5;
|
|---|
| 966 | }
|
|---|
| 967 | else // if(proj_momentum > 3.5) // mb
|
|---|
| 968 | {
|
|---|
| 969 | hnXsc = 10.6+2.*std::log(proj_energy)+25*std::pow(proj_energy,-0.43);
|
|---|
| 970 | }
|
|---|
| 971 | // pi-p
|
|---|
| 972 |
|
|---|
| 973 | if(proj_momentum < 0.37)
|
|---|
| 974 | {
|
|---|
| 975 | hpXsc = 28.0 + 40*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.07/0.07);
|
|---|
| 976 | }
|
|---|
| 977 | else if(proj_momentum<0.65)
|
|---|
| 978 | {
|
|---|
| 979 | hpXsc = 26+110*(std::log(proj_momentum/0.48))*(std::log(proj_momentum/0.48));
|
|---|
| 980 | }
|
|---|
| 981 | else if(proj_momentum<1.3)
|
|---|
| 982 | {
|
|---|
| 983 | hpXsc = 36.1+
|
|---|
| 984 | 10*std::exp(-(proj_momentum-0.72)*(proj_momentum-0.72)/0.06/0.06)+
|
|---|
| 985 | 24*std::exp(-(proj_momentum-1.015)*(proj_momentum-1.015)/0.075/0.075);
|
|---|
| 986 | }
|
|---|
| 987 | else if(proj_momentum<3.0)
|
|---|
| 988 | {
|
|---|
| 989 | hpXsc = 36.1+0.079-4.313*std::log(proj_momentum)+
|
|---|
| 990 | 3*std::exp(-(proj_momentum-2.1)*(proj_momentum-2.1)/0.4/0.4)+
|
|---|
| 991 | 1.5*std::exp(-(proj_momentum-1.4)*(proj_momentum-1.4)/0.12/0.12);
|
|---|
| 992 | }
|
|---|
| 993 | else // mb
|
|---|
| 994 | {
|
|---|
| 995 | hpXsc = 10.6+2*std::log(proj_energy)+30*std::pow(proj_energy,-0.43);
|
|---|
| 996 | }
|
|---|
| 997 | xsection = hpXsc*Zt + hnXsc*Nt;
|
|---|
| 998 | }
|
|---|
| 999 | else if(theParticle == theKPlus)
|
|---|
| 1000 | {
|
|---|
| 1001 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1002 | + 7.14*std::pow(sMand,-eta1) - 13.45*std::pow(sMand,-eta2));
|
|---|
| 1003 |
|
|---|
| 1004 | xsection += Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1005 | + 5.17*std::pow(sMand,-eta1) - 7.23*std::pow(sMand,-eta2));
|
|---|
| 1006 | }
|
|---|
| 1007 | else if(theParticle == theKMinus)
|
|---|
| 1008 | {
|
|---|
| 1009 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1010 | + 7.14*std::pow(sMand,-eta1) + 13.45*std::pow(sMand,-eta2));
|
|---|
| 1011 |
|
|---|
| 1012 | xsection += Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1013 | + 5.17*std::pow(sMand,-eta1) + 7.23*std::pow(sMand,-eta2));
|
|---|
| 1014 | }
|
|---|
| 1015 | else if(theParticle == theSMinus)
|
|---|
| 1016 | {
|
|---|
| 1017 | xsection = At*( 35.20 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1018 | - 199.*std::pow(sMand,-eta1) + 264.*std::pow(sMand,-eta2));
|
|---|
| 1019 | }
|
|---|
| 1020 | else if(theParticle == theGamma) // modify later on
|
|---|
| 1021 | {
|
|---|
| 1022 | xsection = At*( 0.0 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1023 | + 0.032*std::pow(sMand,-eta1) - 0.0*std::pow(sMand,-eta2));
|
|---|
| 1024 |
|
|---|
| 1025 | }
|
|---|
| 1026 | else // as proton ???
|
|---|
| 1027 | {
|
|---|
| 1028 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1029 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2));
|
|---|
| 1030 |
|
|---|
| 1031 | xsection += Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.)
|
|---|
| 1032 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2));
|
|---|
| 1033 | }
|
|---|
| 1034 | xsection *= millibarn; // parametrised in mb
|
|---|
| 1035 | return xsection;
|
|---|
| 1036 | }
|
|---|
| 1037 |
|
|---|
| 1038 |
|
|---|
| 1039 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 1040 | //
|
|---|
| 1041 | // Returns hadron-nucleon inelastic cross-section based on proper parametrisation
|
|---|
| 1042 |
|
|---|
| 1043 | G4double
|
|---|
| 1044 | G4GlauberGribovCrossSection::GetHNinelasticXsc(const G4DynamicParticle* aParticle,
|
|---|
| 1045 | const G4Element* anElement )
|
|---|
| 1046 | {
|
|---|
| 1047 | G4double At = anElement->GetN(); // number of nucleons
|
|---|
| 1048 | G4double Zt = anElement->GetZ(); // number of protons
|
|---|
| 1049 |
|
|---|
| 1050 |
|
|---|
| 1051 | return GetHNinelasticXsc( aParticle, At, Zt );
|
|---|
| 1052 | }
|
|---|
| 1053 |
|
|---|
| 1054 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 1055 | //
|
|---|
| 1056 | // Returns hadron-nucleon inelastic cross-section based on FTF-parametrisation
|
|---|
| 1057 |
|
|---|
| 1058 | G4double
|
|---|
| 1059 | G4GlauberGribovCrossSection::GetHNinelasticXsc(const G4DynamicParticle* aParticle,
|
|---|
| 1060 | G4double At, G4double Zt )
|
|---|
| 1061 | {
|
|---|
| 1062 | G4ParticleDefinition* hadron = aParticle->GetDefinition();
|
|---|
| 1063 | G4double sumInelastic, Nt = At - Zt;
|
|---|
| 1064 | if(Nt < 0.) Nt = 0.;
|
|---|
| 1065 |
|
|---|
| 1066 | if( hadron == theKPlus )
|
|---|
| 1067 | {
|
|---|
| 1068 | sumInelastic = GetHNinelasticXscVU(aParticle, At, Zt);
|
|---|
| 1069 | }
|
|---|
| 1070 | else
|
|---|
| 1071 | {
|
|---|
| 1072 | //sumInelastic = Zt*GetHadronNucleonXscMK(aParticle, theProton);
|
|---|
| 1073 | // sumInelastic += Nt*GetHadronNucleonXscMK(aParticle, theNeutron);
|
|---|
| 1074 | sumInelastic = Zt*GetHadronNucleonXscNS(aParticle, 1.0, 1.0);
|
|---|
| 1075 | sumInelastic += Nt*GetHadronNucleonXscNS(aParticle, 1.0, 0.0);
|
|---|
| 1076 | }
|
|---|
| 1077 | return sumInelastic;
|
|---|
| 1078 | }
|
|---|
| 1079 |
|
|---|
| 1080 |
|
|---|
| 1081 | /////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 1082 | //
|
|---|
| 1083 | // Returns hadron-nucleon inelastic cross-section based on FTF-parametrisation
|
|---|
| 1084 |
|
|---|
| 1085 | G4double
|
|---|
| 1086 | G4GlauberGribovCrossSection::GetHNinelasticXscVU(const G4DynamicParticle* aParticle,
|
|---|
| 1087 | G4double At, G4double Zt )
|
|---|
| 1088 | {
|
|---|
| 1089 | G4int PDGcode = aParticle->GetDefinition()->GetPDGEncoding();
|
|---|
| 1090 | G4int absPDGcode = std::abs(PDGcode);
|
|---|
| 1091 |
|
|---|
| 1092 | G4double Elab = aParticle->GetTotalEnergy();
|
|---|
| 1093 | // (s - 2*0.88*GeV*GeV)/(2*0.939*GeV)/GeV;
|
|---|
| 1094 | G4double Plab = aParticle->GetMomentum().mag();
|
|---|
| 1095 | // std::sqrt(Elab * Elab - 0.88);
|
|---|
| 1096 |
|
|---|
| 1097 | Elab /= GeV;
|
|---|
| 1098 | Plab /= GeV;
|
|---|
| 1099 |
|
|---|
| 1100 | G4double LogPlab = std::log( Plab );
|
|---|
| 1101 | G4double sqrLogPlab = LogPlab * LogPlab;
|
|---|
| 1102 |
|
|---|
| 1103 | //G4cout<<"Plab = "<<Plab<<G4endl;
|
|---|
| 1104 |
|
|---|
| 1105 | G4double NumberOfTargetProtons = Zt;
|
|---|
| 1106 | G4double NumberOfTargetNucleons = At;
|
|---|
| 1107 | G4double NumberOfTargetNeutrons = NumberOfTargetNucleons - NumberOfTargetProtons;
|
|---|
| 1108 |
|
|---|
| 1109 | if(NumberOfTargetNeutrons < 0.) NumberOfTargetNeutrons = 0.;
|
|---|
| 1110 |
|
|---|
| 1111 | G4double Xtotal, Xelastic, Xinelastic;
|
|---|
| 1112 |
|
|---|
| 1113 | if( absPDGcode > 1000 ) //------Projectile is baryon --------
|
|---|
| 1114 | {
|
|---|
| 1115 | G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1116 | 0.522*sqrLogPlab - 4.51*LogPlab;
|
|---|
| 1117 |
|
|---|
| 1118 | G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1119 | 0.513*sqrLogPlab - 4.27*LogPlab;
|
|---|
| 1120 |
|
|---|
| 1121 | G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) +
|
|---|
| 1122 | 0.169*sqrLogPlab - 1.85*LogPlab;
|
|---|
| 1123 |
|
|---|
| 1124 | G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) +
|
|---|
| 1125 | 0.169*sqrLogPlab - 1.85*LogPlab;
|
|---|
| 1126 |
|
|---|
| 1127 | Xtotal = ( NumberOfTargetProtons * XtotPP +
|
|---|
| 1128 | NumberOfTargetNeutrons * XtotPN );
|
|---|
| 1129 |
|
|---|
| 1130 | Xelastic = ( NumberOfTargetProtons * XelPP +
|
|---|
| 1131 | NumberOfTargetNeutrons * XelPN );
|
|---|
| 1132 | }
|
|---|
| 1133 | else if( PDGcode == 211 ) //------Projectile is PionPlus -------
|
|---|
| 1134 | {
|
|---|
| 1135 | G4double XtotPiP = 16.4 + 19.3 *std::pow(Plab,-0.42) +
|
|---|
| 1136 | 0.19 *sqrLogPlab - 0.0 *LogPlab;
|
|---|
| 1137 |
|
|---|
| 1138 | G4double XtotPiN = 33.0 + 14.0 *std::pow(Plab,-1.36) +
|
|---|
| 1139 | 0.456*sqrLogPlab - 4.03*LogPlab;
|
|---|
| 1140 |
|
|---|
| 1141 | G4double XelPiP = 0.0 + 11.4*std::pow(Plab,-0.40) +
|
|---|
| 1142 | 0.079*sqrLogPlab - 0.0 *LogPlab;
|
|---|
| 1143 |
|
|---|
| 1144 | G4double XelPiN = 1.76 + 11.2*std::pow(Plab,-0.64) +
|
|---|
| 1145 | 0.043*sqrLogPlab - 0.0 *LogPlab;
|
|---|
| 1146 |
|
|---|
| 1147 | Xtotal = ( NumberOfTargetProtons * XtotPiP +
|
|---|
| 1148 | NumberOfTargetNeutrons * XtotPiN );
|
|---|
| 1149 |
|
|---|
| 1150 | Xelastic = ( NumberOfTargetProtons * XelPiP +
|
|---|
| 1151 | NumberOfTargetNeutrons * XelPiN );
|
|---|
| 1152 | }
|
|---|
| 1153 | else if( PDGcode == -211 ) //------Projectile is PionMinus -------
|
|---|
| 1154 | {
|
|---|
| 1155 | G4double XtotPiP = 33.0 + 14.0 *std::pow(Plab,-1.36) +
|
|---|
| 1156 | 0.456*sqrLogPlab - 4.03*LogPlab;
|
|---|
| 1157 |
|
|---|
| 1158 | G4double XtotPiN = 16.4 + 19.3 *std::pow(Plab,-0.42) +
|
|---|
| 1159 | 0.19 *sqrLogPlab - 0.0 *LogPlab;
|
|---|
| 1160 |
|
|---|
| 1161 | G4double XelPiP = 1.76 + 11.2*std::pow(Plab,-0.64) +
|
|---|
| 1162 | 0.043*sqrLogPlab - 0.0 *LogPlab;
|
|---|
| 1163 |
|
|---|
| 1164 | G4double XelPiN = 0.0 + 11.4*std::pow(Plab,-0.40) +
|
|---|
| 1165 | 0.079*sqrLogPlab - 0.0 *LogPlab;
|
|---|
| 1166 |
|
|---|
| 1167 | Xtotal = ( NumberOfTargetProtons * XtotPiP +
|
|---|
| 1168 | NumberOfTargetNeutrons * XtotPiN );
|
|---|
| 1169 |
|
|---|
| 1170 | Xelastic = ( NumberOfTargetProtons * XelPiP +
|
|---|
| 1171 | NumberOfTargetNeutrons * XelPiN );
|
|---|
| 1172 | }
|
|---|
| 1173 | else if( PDGcode == 111 ) //------Projectile is PionZero -------
|
|---|
| 1174 | {
|
|---|
| 1175 | G4double XtotPiP =(16.4 + 19.3 *std::pow(Plab,-0.42) +
|
|---|
| 1176 | 0.19 *sqrLogPlab - 0.0 *LogPlab + //Pi+
|
|---|
| 1177 | 33.0 + 14.0 *std::pow(Plab,-1.36) +
|
|---|
| 1178 | 0.456*sqrLogPlab - 4.03*LogPlab)/2; //Pi-
|
|---|
| 1179 |
|
|---|
| 1180 | G4double XtotPiN =(33.0 + 14.0 *std::pow(Plab,-1.36) +
|
|---|
| 1181 | 0.456*sqrLogPlab - 4.03*LogPlab + //Pi+
|
|---|
| 1182 | 16.4 + 19.3 *std::pow(Plab,-0.42) +
|
|---|
| 1183 | 0.19 *sqrLogPlab - 0.0 *LogPlab)/2; //Pi-
|
|---|
| 1184 |
|
|---|
| 1185 | G4double XelPiP =( 0.0 + 11.4*std::pow(Plab,-0.40) +
|
|---|
| 1186 | 0.079*sqrLogPlab - 0.0 *LogPlab + //Pi+
|
|---|
| 1187 | 1.76 + 11.2*std::pow(Plab,-0.64) +
|
|---|
| 1188 | 0.043*sqrLogPlab - 0.0 *LogPlab)/2; //Pi-
|
|---|
| 1189 |
|
|---|
| 1190 | G4double XelPiN =( 1.76 + 11.2*std::pow(Plab,-0.64) +
|
|---|
| 1191 | 0.043*sqrLogPlab - 0.0 *LogPlab + //Pi+
|
|---|
| 1192 | 0.0 + 11.4*std::pow(Plab,-0.40) +
|
|---|
| 1193 | 0.079*sqrLogPlab - 0.0 *LogPlab)/2; //Pi-
|
|---|
| 1194 |
|
|---|
| 1195 | Xtotal = ( NumberOfTargetProtons * XtotPiP +
|
|---|
| 1196 | NumberOfTargetNeutrons * XtotPiN );
|
|---|
| 1197 |
|
|---|
| 1198 | Xelastic = ( NumberOfTargetProtons * XelPiP +
|
|---|
| 1199 | NumberOfTargetNeutrons * XelPiN );
|
|---|
| 1200 | }
|
|---|
| 1201 | else if( PDGcode == 321 ) //------Projectile is KaonPlus -------
|
|---|
| 1202 | {
|
|---|
| 1203 | G4double XtotKP = 18.1 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1204 | 0.26 *sqrLogPlab - 1.0 *LogPlab;
|
|---|
| 1205 | G4double XtotKN = 18.7 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1206 | 0.21 *sqrLogPlab - 0.89*LogPlab;
|
|---|
| 1207 |
|
|---|
| 1208 | G4double XelKP = 5.0 + 8.1*std::pow(Plab,-1.8 ) +
|
|---|
| 1209 | 0.16 *sqrLogPlab - 1.3 *LogPlab;
|
|---|
| 1210 |
|
|---|
| 1211 | G4double XelKN = 7.3 + 0. *std::pow(Plab,-0. ) +
|
|---|
| 1212 | 0.29 *sqrLogPlab - 2.4 *LogPlab;
|
|---|
| 1213 |
|
|---|
| 1214 | Xtotal = ( NumberOfTargetProtons * XtotKP +
|
|---|
| 1215 | NumberOfTargetNeutrons * XtotKN );
|
|---|
| 1216 |
|
|---|
| 1217 | Xelastic = ( NumberOfTargetProtons * XelKP +
|
|---|
| 1218 | NumberOfTargetNeutrons * XelKN );
|
|---|
| 1219 | }
|
|---|
| 1220 | else if( PDGcode ==-321 ) //------Projectile is KaonMinus ------
|
|---|
| 1221 | {
|
|---|
| 1222 | G4double XtotKP = 32.1 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1223 | 0.66 *sqrLogPlab - 5.6 *LogPlab;
|
|---|
| 1224 | G4double XtotKN = 25.2 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1225 | 0.38 *sqrLogPlab - 2.9 *LogPlab;
|
|---|
| 1226 |
|
|---|
| 1227 | G4double XelKP = 7.3 + 0. *std::pow(Plab,-0. ) +
|
|---|
| 1228 | 0.29 *sqrLogPlab - 2.4 *LogPlab;
|
|---|
| 1229 |
|
|---|
| 1230 | G4double XelKN = 5.0 + 8.1*std::pow(Plab,-1.8 ) +
|
|---|
| 1231 | 0.16 *sqrLogPlab - 1.3 *LogPlab;
|
|---|
| 1232 |
|
|---|
| 1233 | Xtotal = ( NumberOfTargetProtons * XtotKP +
|
|---|
| 1234 | NumberOfTargetNeutrons * XtotKN );
|
|---|
| 1235 |
|
|---|
| 1236 | Xelastic = ( NumberOfTargetProtons * XelKP +
|
|---|
| 1237 | NumberOfTargetNeutrons * XelKN );
|
|---|
| 1238 | }
|
|---|
| 1239 | else if( PDGcode == 311 ) //------Projectile is KaonZero ------
|
|---|
| 1240 | {
|
|---|
| 1241 | G4double XtotKP = ( 18.1 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1242 | 0.26 *sqrLogPlab - 1.0 *LogPlab + //K+
|
|---|
| 1243 | 32.1 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1244 | 0.66 *sqrLogPlab - 5.6 *LogPlab)/2; //K-
|
|---|
| 1245 |
|
|---|
| 1246 | G4double XtotKN = ( 18.7 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1247 | 0.21 *sqrLogPlab - 0.89*LogPlab + //K+
|
|---|
| 1248 | 25.2 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1249 | 0.38 *sqrLogPlab - 2.9 *LogPlab)/2; //K-
|
|---|
| 1250 |
|
|---|
| 1251 | G4double XelKP = ( 5.0 + 8.1*std::pow(Plab,-1.8 )
|
|---|
| 1252 | + 0.16 *sqrLogPlab - 1.3 *LogPlab + //K+
|
|---|
| 1253 | 7.3 + 0. *std::pow(Plab,-0. ) +
|
|---|
| 1254 | 0.29 *sqrLogPlab - 2.4 *LogPlab)/2; //K-
|
|---|
| 1255 |
|
|---|
| 1256 | G4double XelKN = ( 7.3 + 0. *std::pow(Plab,-0. ) +
|
|---|
| 1257 | 0.29 *sqrLogPlab - 2.4 *LogPlab + //K+
|
|---|
| 1258 | 5.0 + 8.1*std::pow(Plab,-1.8 ) +
|
|---|
| 1259 | 0.16 *sqrLogPlab - 1.3 *LogPlab)/2; //K-
|
|---|
| 1260 |
|
|---|
| 1261 | Xtotal = ( NumberOfTargetProtons * XtotKP +
|
|---|
| 1262 | NumberOfTargetNeutrons * XtotKN );
|
|---|
| 1263 |
|
|---|
| 1264 | Xelastic = ( NumberOfTargetProtons * XelKP +
|
|---|
| 1265 | NumberOfTargetNeutrons * XelKN );
|
|---|
| 1266 | }
|
|---|
| 1267 | else //------Projectile is undefined, Nucleon assumed
|
|---|
| 1268 | {
|
|---|
| 1269 | G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1270 | 0.522*sqrLogPlab - 4.51*LogPlab;
|
|---|
| 1271 |
|
|---|
| 1272 | G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) +
|
|---|
| 1273 | 0.513*sqrLogPlab - 4.27*LogPlab;
|
|---|
| 1274 |
|
|---|
| 1275 | G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) +
|
|---|
| 1276 | 0.169*sqrLogPlab - 1.85*LogPlab;
|
|---|
| 1277 | G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) +
|
|---|
| 1278 | 0.169*sqrLogPlab - 1.85*LogPlab;
|
|---|
| 1279 |
|
|---|
| 1280 | Xtotal = ( NumberOfTargetProtons * XtotPP +
|
|---|
| 1281 | NumberOfTargetNeutrons * XtotPN );
|
|---|
| 1282 |
|
|---|
| 1283 | Xelastic = ( NumberOfTargetProtons * XelPP +
|
|---|
| 1284 | NumberOfTargetNeutrons * XelPN );
|
|---|
| 1285 | }
|
|---|
| 1286 | Xinelastic = Xtotal - Xelastic;
|
|---|
| 1287 |
|
|---|
| 1288 | if(Xinelastic < 0.) Xinelastic = 0.;
|
|---|
| 1289 |
|
|---|
| 1290 | return Xinelastic*= millibarn;
|
|---|
| 1291 | }
|
|---|
| 1292 |
|
|---|
| 1293 | ////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 1294 | //
|
|---|
| 1295 | //
|
|---|
| 1296 |
|
|---|
| 1297 | G4double
|
|---|
| 1298 | G4GlauberGribovCrossSection::GetNucleusRadius( const G4DynamicParticle* ,
|
|---|
| 1299 | const G4Element* anElement)
|
|---|
| 1300 | {
|
|---|
| 1301 | G4double At = anElement->GetN();
|
|---|
| 1302 | G4double oneThird = 1.0/3.0;
|
|---|
| 1303 | G4double cubicrAt = std::pow (At, oneThird);
|
|---|
| 1304 |
|
|---|
| 1305 | G4double R; // = fRadiusConst*cubicrAt;
|
|---|
| 1306 | /*
|
|---|
| 1307 | G4double tmp = std::pow( cubicrAt-1., 3.);
|
|---|
| 1308 | tmp += At;
|
|---|
| 1309 | tmp *= 0.5;
|
|---|
| 1310 |
|
|---|
| 1311 | if (At > 20.) // 20.
|
|---|
| 1312 | {
|
|---|
| 1313 | R = fRadiusConst*std::pow (tmp, oneThird);
|
|---|
| 1314 | }
|
|---|
| 1315 | else
|
|---|
| 1316 | {
|
|---|
| 1317 | R = fRadiusConst*cubicrAt;
|
|---|
| 1318 | }
|
|---|
| 1319 | */
|
|---|
| 1320 |
|
|---|
| 1321 | R = fRadiusConst*cubicrAt;
|
|---|
| 1322 |
|
|---|
| 1323 | G4double meanA = 21.;
|
|---|
| 1324 |
|
|---|
| 1325 | G4double tauA1 = 40.;
|
|---|
| 1326 | G4double tauA2 = 10.;
|
|---|
| 1327 | G4double tauA3 = 5.;
|
|---|
| 1328 |
|
|---|
| 1329 | G4double a1 = 0.85;
|
|---|
| 1330 | G4double b1 = 1. - a1;
|
|---|
| 1331 |
|
|---|
| 1332 | G4double b2 = 0.3;
|
|---|
| 1333 | G4double b3 = 4.;
|
|---|
| 1334 |
|
|---|
| 1335 | if (At > 20.) // 20.
|
|---|
| 1336 | {
|
|---|
| 1337 | R *= ( a1 + b1*std::exp( -(At - meanA)/tauA1) );
|
|---|
| 1338 | }
|
|---|
| 1339 | else if (At > 3.5)
|
|---|
| 1340 | {
|
|---|
| 1341 | R *= ( 1.0 + b2*( 1. - std::exp( (At - meanA)/tauA2) ) );
|
|---|
| 1342 | }
|
|---|
| 1343 | else
|
|---|
| 1344 | {
|
|---|
| 1345 | R *= ( 1.0 + b3*( 1. - std::exp( (At - meanA)/tauA3) ) );
|
|---|
| 1346 | }
|
|---|
| 1347 | return R;
|
|---|
| 1348 |
|
|---|
| 1349 | }
|
|---|
| 1350 | ////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 1351 | //
|
|---|
| 1352 | //
|
|---|
| 1353 |
|
|---|
| 1354 | G4double
|
|---|
| 1355 | G4GlauberGribovCrossSection::GetNucleusRadius(G4double At)
|
|---|
| 1356 | {
|
|---|
| 1357 | G4double oneThird = 1.0/3.0;
|
|---|
| 1358 | G4double cubicrAt = std::pow (At, oneThird);
|
|---|
| 1359 |
|
|---|
| 1360 | G4double R; // = fRadiusConst*cubicrAt;
|
|---|
| 1361 |
|
|---|
| 1362 | /*
|
|---|
| 1363 | G4double tmp = std::pow( cubicrAt-1., 3.);
|
|---|
| 1364 | tmp += At;
|
|---|
| 1365 | tmp *= 0.5;
|
|---|
| 1366 |
|
|---|
| 1367 | if (At > 20.)
|
|---|
| 1368 | {
|
|---|
| 1369 | R = fRadiusConst*std::pow (tmp, oneThird);
|
|---|
| 1370 | }
|
|---|
| 1371 | else
|
|---|
| 1372 | {
|
|---|
| 1373 | R = fRadiusConst*cubicrAt;
|
|---|
| 1374 | }
|
|---|
| 1375 | */
|
|---|
| 1376 |
|
|---|
| 1377 | R = fRadiusConst*cubicrAt;
|
|---|
| 1378 |
|
|---|
| 1379 | G4double meanA = 20.;
|
|---|
| 1380 | G4double tauA = 20.;
|
|---|
| 1381 |
|
|---|
| 1382 | if (At > 20.) // 20.
|
|---|
| 1383 | {
|
|---|
| 1384 | R *= ( 0.8 + 0.2*std::exp( -(At - meanA)/tauA) );
|
|---|
| 1385 | }
|
|---|
| 1386 | else
|
|---|
| 1387 | {
|
|---|
| 1388 | R *= ( 1.0 + 0.1*( 1. - std::exp( (At - meanA)/tauA) ) );
|
|---|
| 1389 | }
|
|---|
| 1390 |
|
|---|
| 1391 | return R;
|
|---|
| 1392 | }
|
|---|
| 1393 |
|
|---|
| 1394 | ////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 1395 | //
|
|---|
| 1396 | //
|
|---|
| 1397 |
|
|---|
| 1398 | G4double G4GlauberGribovCrossSection::CalculateEcmValue( const G4double mp ,
|
|---|
| 1399 | const G4double mt ,
|
|---|
| 1400 | const G4double Plab )
|
|---|
| 1401 | {
|
|---|
| 1402 | G4double Elab = std::sqrt ( mp * mp + Plab * Plab );
|
|---|
| 1403 | G4double Ecm = std::sqrt ( mp * mp + mt * mt + 2 * Elab * mt );
|
|---|
| 1404 | // G4double Pcm = Plab * mt / Ecm;
|
|---|
| 1405 | // G4double KEcm = std::sqrt ( Pcm * Pcm + mp * mp ) - mp;
|
|---|
| 1406 |
|
|---|
| 1407 | return Ecm ; // KEcm;
|
|---|
| 1408 | }
|
|---|
| 1409 |
|
|---|
| 1410 |
|
|---|
| 1411 | ////////////////////////////////////////////////////////////////////////////////////
|
|---|
| 1412 | //
|
|---|
| 1413 | //
|
|---|
| 1414 |
|
|---|
| 1415 | G4double G4GlauberGribovCrossSection::CalcMandelstamS( const G4double mp ,
|
|---|
| 1416 | const G4double mt ,
|
|---|
| 1417 | const G4double Plab )
|
|---|
| 1418 | {
|
|---|
| 1419 | G4double Elab = std::sqrt ( mp * mp + Plab * Plab );
|
|---|
| 1420 | G4double sMand = mp*mp + mt*mt + 2*Elab*mt ;
|
|---|
| 1421 |
|
|---|
| 1422 | return sMand;
|
|---|
| 1423 | }
|
|---|
| 1424 |
|
|---|
| 1425 |
|
|---|
| 1426 | //
|
|---|
| 1427 | //
|
|---|
| 1428 | ///////////////////////////////////////////////////////////////////////////////////////
|
|---|
