source: trunk/source/processes/hadronic/cross_sections/src/G4GlauberGribovCrossSection.cc@ 1007

Last change on this file since 1007 was 962, checked in by garnier, 17 years ago

update processes
File size: 60.6 KB
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[819]1//
2// ********************************************************************
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18// * This code implementation is the result of the scientific and *
19// * technical work of the GEANT4 collaboration. *
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24// ********************************************************************
25//
26//
27// 17.07.06 V. Grichine - first implementation
28// 22.01.07 V.Ivanchenko - add interface with Z and A
29// 05.03.07 V.Ivanchenko - add IfZAApplicable
30//
31
32#include "G4GlauberGribovCrossSection.hh"
33
34#include "G4ParticleTable.hh"
35#include "G4IonTable.hh"
36#include "G4ParticleDefinition.hh"
37
38//////////////////////////////////////////////////////////////////////////////////////
39//
40//
41
[962]42const G4double G4GlauberGribovCrossSection::fNeutronBarCorrectionTot[93] = {
[819]43
[962]441.0, 1.0, 1.118517e+00, 1.082002e+00, 1.116171e+00, 1.078747e+00, 1.061315e+00,
451.058205e+00, 1.082663e+00, 1.068500e+00, 1.076912e+00, 1.083475e+00, 1.079117e+00,
461.071856e+00, 1.071990e+00, 1.073774e+00, 1.079356e+00, 1.081314e+00, 1.082056e+00,
471.090772e+00, 1.096776e+00, 1.095828e+00, 1.097678e+00, 1.099157e+00, 1.103677e+00,
481.105132e+00, 1.109806e+00, 1.110816e+00, 1.117378e+00, 1.115165e+00, 1.115710e+00,
491.111855e+00, 1.110482e+00, 1.110112e+00, 1.106676e+00, 1.108706e+00, 1.105549e+00,
501.106318e+00, 1.106242e+00, 1.107672e+00, 1.107342e+00, 1.108119e+00, 1.106655e+00,
511.102588e+00, 1.096657e+00, 1.092920e+00, 1.086629e+00, 1.083592e+00, 1.076030e+00,
521.083777e+00, 1.089460e+00, 1.086545e+00, 1.079924e+00, 1.082218e+00, 1.077798e+00,
531.077062e+00, 1.072825e+00, 1.072241e+00, 1.072104e+00, 1.072490e+00, 1.069829e+00,
541.070398e+00, 1.065458e+00, 1.064968e+00, 1.060524e+00, 1.060048e+00, 1.057620e+00,
551.056428e+00, 1.055366e+00, 1.055017e+00, 1.052304e+00, 1.051767e+00, 1.049728e+00,
561.048745e+00, 1.047399e+00, 1.045876e+00, 1.042972e+00, 1.041824e+00, 1.039993e+00,
571.039021e+00, 1.036627e+00, 1.034176e+00, 1.032526e+00, 1.033633e+00, 1.036107e+00,
581.037803e+00, 1.031266e+00, 1.032991e+00, 1.033284e+00, 1.035015e+00, 1.033945e+00,
591.037075e+00, 1.034721e+00
60
61};
62
63const G4double G4GlauberGribovCrossSection::fNeutronBarCorrectionIn[93] = {
64
651.0, 1.0, 1.167421e+00, 1.156250e+00, 1.205364e+00, 1.154225e+00, 1.120391e+00,
661.124632e+00, 1.129460e+00, 1.107863e+00, 1.102152e+00, 1.104593e+00, 1.100285e+00,
671.098450e+00, 1.092677e+00, 1.101124e+00, 1.106461e+00, 1.115049e+00, 1.123903e+00,
681.126661e+00, 1.131259e+00, 1.133949e+00, 1.134185e+00, 1.133767e+00, 1.132813e+00,
691.131515e+00, 1.130338e+00, 1.134171e+00, 1.139206e+00, 1.141474e+00, 1.142189e+00,
701.140725e+00, 1.140100e+00, 1.139848e+00, 1.137674e+00, 1.138645e+00, 1.136339e+00,
711.136439e+00, 1.135946e+00, 1.136431e+00, 1.135702e+00, 1.135703e+00, 1.134113e+00,
721.131935e+00, 1.128381e+00, 1.126373e+00, 1.122453e+00, 1.120908e+00, 1.115953e+00,
731.115947e+00, 1.114426e+00, 1.111749e+00, 1.106207e+00, 1.107494e+00, 1.103622e+00,
741.102576e+00, 1.098816e+00, 1.097889e+00, 1.097306e+00, 1.097130e+00, 1.094578e+00,
751.094552e+00, 1.090222e+00, 1.089358e+00, 1.085409e+00, 1.084560e+00, 1.082182e+00,
761.080773e+00, 1.079464e+00, 1.078724e+00, 1.076121e+00, 1.075235e+00, 1.073159e+00,
771.071920e+00, 1.070395e+00, 1.069503e+00, 1.067525e+00, 1.066919e+00, 1.065779e+00,
781.065319e+00, 1.063730e+00, 1.062092e+00, 1.061085e+00, 1.059908e+00, 1.059815e+00,
791.059109e+00, 1.051920e+00, 1.051258e+00, 1.049473e+00, 1.048823e+00, 1.045984e+00,
801.046435e+00, 1.042614e+00
81
82};
83
84const G4double G4GlauberGribovCrossSection::fProtonBarCorrectionTot[93] = {
85
861.0, 1.0,
871.118515e+00, 1.082000e+00, 1.116169e+00, 1.078745e+00, 1.061313e+00, 1.058203e+00,
881.082661e+00, 1.068498e+00, 1.076910e+00, 1.083474e+00, 1.079115e+00, 1.071854e+00,
891.071988e+00, 1.073772e+00, 1.079355e+00, 1.081312e+00, 1.082054e+00, 1.090770e+00,
901.096774e+00, 1.095827e+00, 1.097677e+00, 1.099156e+00, 1.103676e+00, 1.105130e+00,
911.109805e+00, 1.110814e+00, 1.117377e+00, 1.115163e+00, 1.115708e+00, 1.111853e+00,
921.110480e+00, 1.110111e+00, 1.106674e+00, 1.108705e+00, 1.105548e+00, 1.106317e+00,
931.106241e+00, 1.107671e+00, 1.107341e+00, 1.108118e+00, 1.106654e+00, 1.102586e+00,
941.096655e+00, 1.092918e+00, 1.086628e+00, 1.083590e+00, 1.076028e+00, 1.083776e+00,
951.089458e+00, 1.086543e+00, 1.079923e+00, 1.082216e+00, 1.077797e+00, 1.077061e+00,
961.072824e+00, 1.072239e+00, 1.072103e+00, 1.072488e+00, 1.069828e+00, 1.070396e+00,
971.065456e+00, 1.064966e+00, 1.060523e+00, 1.060047e+00, 1.057618e+00, 1.056427e+00,
981.055365e+00, 1.055016e+00, 1.052303e+00, 1.051766e+00, 1.049727e+00, 1.048743e+00,
991.047397e+00, 1.045875e+00, 1.042971e+00, 1.041823e+00, 1.039992e+00, 1.039019e+00,
1001.036626e+00, 1.034175e+00, 1.032525e+00, 1.033632e+00, 1.036106e+00, 1.037802e+00,
1011.031265e+00, 1.032990e+00, 1.033283e+00, 1.035014e+00, 1.033944e+00, 1.037074e+00,
1021.034720e+00
103
104};
105
106const G4double G4GlauberGribovCrossSection::fProtonBarCorrectionIn[93] = {
107
1081.0, 1.0,
1091.167419e+00, 1.156248e+00, 1.205362e+00, 1.154224e+00, 1.120390e+00, 1.124630e+00,
1101.129459e+00, 1.107861e+00, 1.102151e+00, 1.104591e+00, 1.100284e+00, 1.098449e+00,
1111.092675e+00, 1.101122e+00, 1.106460e+00, 1.115048e+00, 1.123902e+00, 1.126659e+00,
1121.131258e+00, 1.133948e+00, 1.134183e+00, 1.133766e+00, 1.132812e+00, 1.131514e+00,
1131.130337e+00, 1.134170e+00, 1.139205e+00, 1.141472e+00, 1.142188e+00, 1.140724e+00,
1141.140099e+00, 1.139847e+00, 1.137672e+00, 1.138644e+00, 1.136338e+00, 1.136438e+00,
1151.135945e+00, 1.136429e+00, 1.135701e+00, 1.135702e+00, 1.134112e+00, 1.131934e+00,
1161.128380e+00, 1.126371e+00, 1.122452e+00, 1.120907e+00, 1.115952e+00, 1.115946e+00,
1171.114425e+00, 1.111748e+00, 1.106205e+00, 1.107493e+00, 1.103621e+00, 1.102575e+00,
1181.098815e+00, 1.097888e+00, 1.097305e+00, 1.097129e+00, 1.094577e+00, 1.094551e+00,
1191.090221e+00, 1.089357e+00, 1.085408e+00, 1.084559e+00, 1.082181e+00, 1.080772e+00,
1201.079463e+00, 1.078723e+00, 1.076120e+00, 1.075234e+00, 1.073158e+00, 1.071919e+00,
1211.070394e+00, 1.069502e+00, 1.067524e+00, 1.066918e+00, 1.065778e+00, 1.065318e+00,
1221.063729e+00, 1.062091e+00, 1.061084e+00, 1.059907e+00, 1.059814e+00, 1.059108e+00,
1231.051919e+00, 1.051257e+00, 1.049472e+00, 1.048822e+00, 1.045983e+00, 1.046434e+00,
1241.042613e+00
125
126};
127
128
129const G4double G4GlauberGribovCrossSection::fPionPlusBarCorrectionTot[93] = {
130
1311.0, 1.0,
1321.075927e+00, 1.074407e+00, 1.126098e+00, 1.100127e+00, 1.089742e+00, 1.083536e+00,
1331.089988e+00, 1.103566e+00, 1.096922e+00, 1.126573e+00, 1.132734e+00, 1.136512e+00,
1341.136629e+00, 1.133086e+00, 1.132428e+00, 1.129299e+00, 1.125622e+00, 1.126992e+00,
1351.127840e+00, 1.162670e+00, 1.160392e+00, 1.157864e+00, 1.157227e+00, 1.154627e+00,
1361.192555e+00, 1.197243e+00, 1.197911e+00, 1.200326e+00, 1.220053e+00, 1.215019e+00,
1371.211703e+00, 1.209080e+00, 1.204248e+00, 1.203328e+00, 1.198671e+00, 1.196840e+00,
1381.194392e+00, 1.193037e+00, 1.190408e+00, 1.188583e+00, 1.206127e+00, 1.210028e+00,
1391.206434e+00, 1.204456e+00, 1.200547e+00, 1.199058e+00, 1.200174e+00, 1.200276e+00,
1401.198912e+00, 1.213048e+00, 1.207160e+00, 1.208020e+00, 1.203814e+00, 1.202380e+00,
1411.198306e+00, 1.197002e+00, 1.196027e+00, 1.195449e+00, 1.192563e+00, 1.192135e+00,
1421.187556e+00, 1.186308e+00, 1.182124e+00, 1.180900e+00, 1.178224e+00, 1.176471e+00,
1431.174811e+00, 1.173702e+00, 1.170827e+00, 1.169581e+00, 1.167205e+00, 1.165626e+00,
1441.180244e+00, 1.177626e+00, 1.175121e+00, 1.173903e+00, 1.172192e+00, 1.171128e+00,
1451.168997e+00, 1.166826e+00, 1.164130e+00, 1.165412e+00, 1.165504e+00, 1.165020e+00,
1461.158462e+00, 1.158014e+00, 1.156519e+00, 1.156081e+00, 1.153602e+00, 1.154190e+00,
1471.152974e+00
148
149};
150
151const G4double G4GlauberGribovCrossSection::fPionPlusBarCorrectionIn[93] = {
152
1531.0, 1.0,
1541.140246e+00, 1.097872e+00, 1.104301e+00, 1.068722e+00, 1.044495e+00, 1.062622e+00,
1551.047987e+00, 1.037032e+00, 1.035686e+00, 1.042870e+00, 1.052222e+00, 1.065100e+00,
1561.070480e+00, 1.078286e+00, 1.081488e+00, 1.089713e+00, 1.099105e+00, 1.098003e+00,
1571.102175e+00, 1.117707e+00, 1.121734e+00, 1.125229e+00, 1.126457e+00, 1.128905e+00,
1581.137312e+00, 1.126263e+00, 1.126459e+00, 1.115191e+00, 1.116986e+00, 1.117184e+00,
1591.117037e+00, 1.116777e+00, 1.115858e+00, 1.115745e+00, 1.114489e+00, 1.113993e+00,
1601.113226e+00, 1.112818e+00, 1.111890e+00, 1.111238e+00, 1.111209e+00, 1.111775e+00,
1611.110256e+00, 1.109414e+00, 1.107647e+00, 1.106980e+00, 1.106096e+00, 1.107331e+00,
1621.107849e+00, 1.106407e+00, 1.103426e+00, 1.103896e+00, 1.101756e+00, 1.101031e+00,
1631.098915e+00, 1.098260e+00, 1.097768e+00, 1.097487e+00, 1.095964e+00, 1.095773e+00,
1641.093348e+00, 1.092687e+00, 1.090465e+00, 1.089821e+00, 1.088394e+00, 1.087462e+00,
1651.086571e+00, 1.085997e+00, 1.084451e+00, 1.083798e+00, 1.082513e+00, 1.081670e+00,
1661.080735e+00, 1.075659e+00, 1.074341e+00, 1.073689e+00, 1.072787e+00, 1.072237e+00,
1671.071107e+00, 1.069955e+00, 1.064856e+00, 1.065873e+00, 1.065938e+00, 1.065694e+00,
1681.062192e+00, 1.061967e+00, 1.061180e+00, 1.060960e+00, 1.059646e+00, 1.059975e+00,
1691.059658e+00
170
171};
172
173
174const G4double G4GlauberGribovCrossSection::fPionMinusBarCorrectionTot[93] = {
175
1761.0, 1.0,
1771.075927e+00, 1.077959e+00, 1.129145e+00, 1.102088e+00, 1.089765e+00, 1.083542e+00,
1781.089995e+00, 1.104895e+00, 1.097154e+00, 1.127663e+00, 1.133063e+00, 1.137425e+00,
1791.136724e+00, 1.133859e+00, 1.132498e+00, 1.130276e+00, 1.127896e+00, 1.127656e+00,
1801.127905e+00, 1.164210e+00, 1.162259e+00, 1.160075e+00, 1.158978e+00, 1.156649e+00,
1811.194157e+00, 1.199177e+00, 1.198983e+00, 1.202325e+00, 1.221967e+00, 1.217548e+00,
1821.214389e+00, 1.211760e+00, 1.207335e+00, 1.206081e+00, 1.201766e+00, 1.199779e+00,
1831.197283e+00, 1.195706e+00, 1.193071e+00, 1.191115e+00, 1.208838e+00, 1.212681e+00,
1841.209235e+00, 1.207163e+00, 1.203451e+00, 1.201807e+00, 1.203283e+00, 1.203388e+00,
1851.202244e+00, 1.216509e+00, 1.211066e+00, 1.211504e+00, 1.207539e+00, 1.205991e+00,
1861.202143e+00, 1.200724e+00, 1.199595e+00, 1.198815e+00, 1.196025e+00, 1.195390e+00,
1871.191137e+00, 1.189791e+00, 1.185888e+00, 1.184575e+00, 1.181996e+00, 1.180229e+00,
1881.178545e+00, 1.177355e+00, 1.174616e+00, 1.173312e+00, 1.171016e+00, 1.169424e+00,
1891.184120e+00, 1.181478e+00, 1.179085e+00, 1.177817e+00, 1.176124e+00, 1.175003e+00,
1901.172947e+00, 1.170858e+00, 1.168170e+00, 1.169397e+00, 1.169304e+00, 1.168706e+00,
1911.162774e+00, 1.162217e+00, 1.160740e+00, 1.160196e+00, 1.157857e+00, 1.158220e+00,
1921.157267e+00
193};
194
195
196const G4double G4GlauberGribovCrossSection::fPionMinusBarCorrectionIn[93] = {
197
1981.0, 1.0,
1991.140246e+00, 1.100898e+00, 1.106773e+00, 1.070289e+00, 1.044514e+00, 1.062628e+00,
2001.047992e+00, 1.038041e+00, 1.035862e+00, 1.043679e+00, 1.052466e+00, 1.065780e+00,
2011.070551e+00, 1.078869e+00, 1.081541e+00, 1.090455e+00, 1.100847e+00, 1.098511e+00,
2021.102226e+00, 1.118865e+00, 1.123143e+00, 1.126904e+00, 1.127785e+00, 1.130444e+00,
2031.138502e+00, 1.127678e+00, 1.127244e+00, 1.116634e+00, 1.118347e+00, 1.118988e+00,
2041.118957e+00, 1.118696e+00, 1.118074e+00, 1.117722e+00, 1.116717e+00, 1.116111e+00,
2051.115311e+00, 1.114745e+00, 1.113814e+00, 1.113069e+00, 1.113141e+00, 1.113660e+00,
2061.112249e+00, 1.111343e+00, 1.109718e+00, 1.108942e+00, 1.108310e+00, 1.109549e+00,
2071.110227e+00, 1.108846e+00, 1.106183e+00, 1.106354e+00, 1.104388e+00, 1.103583e+00,
2081.101632e+00, 1.100896e+00, 1.100296e+00, 1.099873e+00, 1.098420e+00, 1.098082e+00,
2091.095892e+00, 1.095162e+00, 1.093144e+00, 1.092438e+00, 1.091083e+00, 1.090142e+00,
2101.089236e+00, 1.088604e+00, 1.087159e+00, 1.086465e+00, 1.085239e+00, 1.084388e+00,
2111.083473e+00, 1.078373e+00, 1.077136e+00, 1.076450e+00, 1.075561e+00, 1.074973e+00,
2121.073898e+00, 1.072806e+00, 1.067706e+00, 1.068684e+00, 1.068618e+00, 1.068294e+00,
2131.065241e+00, 1.064939e+00, 1.064166e+00, 1.063872e+00, 1.062659e+00, 1.062828e+00,
2141.062699e+00
215
216};
217
218
219
220
221////////////////////////////////////////////////////////////////////////////////
222//
223//
224
[819]225G4GlauberGribovCrossSection::G4GlauberGribovCrossSection()
[962]226: fUpperLimit( 100000 * GeV ),
[819]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
266G4GlauberGribovCrossSection::~G4GlauberGribovCrossSection()
267{
268}
269
270
271////////////////////////////////////////////////////////////////////////////////////////
272//
273//
274
275
276G4bool
277G4GlauberGribovCrossSection::IsApplicable(const G4DynamicParticle* aDP,
278 const G4Element* anElement)
279{
280 return IsZAApplicable(aDP, anElement->GetZ(), anElement->GetN());
281}
282
283////////////////////////////////////////////////////////////////////////////////////////
284//
285//
286
287G4bool
288G4GlauberGribovCrossSection::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
[962]305 ( kineticEnergy >= fLowerLimit &&
[819]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
323G4double G4GlauberGribovCrossSection::
324GetCrossSection(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
338G4double G4GlauberGribovCrossSection::
339GetIsoZACrossSection(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 = GetHadronNucleonXscPDG(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
[962]369 xsection *= GetParticleBarCorTot(theParticle, Z);
370
[819]371 fTotalXsc = xsection;
372
373
374
375 fInelasticXsc = nucleusSquare*std::log( 1. + cofInelastic*ratio )/cofInelastic;
376
[962]377 fInelasticXsc *= GetParticleBarCorIn(theParticle, Z);
378
[819]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
401G4double G4GlauberGribovCrossSection::
402GetRatioSD(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 = GetHadronNucleonXscPDG(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
443G4double G4GlauberGribovCrossSection::
444GetRatioQE(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 = GetHadronNucleonXscPDG(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
490G4double
491G4GlauberGribovCrossSection::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
511G4double
512G4GlauberGribovCrossSection::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
582G4double
583G4GlauberGribovCrossSection::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
602G4double
603G4GlauberGribovCrossSection::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
714G4double
715G4GlauberGribovCrossSection::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
733G4double
734G4GlauberGribovCrossSection::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
1043G4double
1044G4GlauberGribovCrossSection::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
1058G4double
1059G4GlauberGribovCrossSection::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 }
1075 return sumInelastic;
1076}
1077
1078
1079/////////////////////////////////////////////////////////////////////////////////////
1080//
1081// Returns hadron-nucleon inelastic cross-section based on FTF-parametrisation
1082
1083G4double
1084G4GlauberGribovCrossSection::GetHNinelasticXscVU(const G4DynamicParticle* aParticle,
1085 G4double At, G4double Zt )
1086{
1087 G4int PDGcode = aParticle->GetDefinition()->GetPDGEncoding();
1088 G4int absPDGcode = std::abs(PDGcode);
1089
1090 G4double Elab = aParticle->GetTotalEnergy();
1091 // (s - 2*0.88*GeV*GeV)/(2*0.939*GeV)/GeV;
1092 G4double Plab = aParticle->GetMomentum().mag();
1093 // std::sqrt(Elab * Elab - 0.88);
1094
1095 Elab /= GeV;
1096 Plab /= GeV;
1097
1098 G4double LogPlab = std::log( Plab );
1099 G4double sqrLogPlab = LogPlab * LogPlab;
1100
1101 //G4cout<<"Plab = "<<Plab<<G4endl;
1102
1103 G4double NumberOfTargetProtons = Zt;
1104 G4double NumberOfTargetNucleons = At;
1105 G4double NumberOfTargetNeutrons = NumberOfTargetNucleons - NumberOfTargetProtons;
1106
1107 if(NumberOfTargetNeutrons < 0.) NumberOfTargetNeutrons = 0.;
1108
1109 G4double Xtotal, Xelastic, Xinelastic;
1110
1111 if( absPDGcode > 1000 ) //------Projectile is baryon --------
1112 {
1113 G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) +
1114 0.522*sqrLogPlab - 4.51*LogPlab;
1115
1116 G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) +
1117 0.513*sqrLogPlab - 4.27*LogPlab;
1118
1119 G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) +
1120 0.169*sqrLogPlab - 1.85*LogPlab;
1121
1122 G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) +
1123 0.169*sqrLogPlab - 1.85*LogPlab;
1124
1125 Xtotal = ( NumberOfTargetProtons * XtotPP +
1126 NumberOfTargetNeutrons * XtotPN );
1127
1128 Xelastic = ( NumberOfTargetProtons * XelPP +
1129 NumberOfTargetNeutrons * XelPN );
1130 }
1131 else if( PDGcode == 211 ) //------Projectile is PionPlus -------
1132 {
1133 G4double XtotPiP = 16.4 + 19.3 *std::pow(Plab,-0.42) +
1134 0.19 *sqrLogPlab - 0.0 *LogPlab;
1135
1136 G4double XtotPiN = 33.0 + 14.0 *std::pow(Plab,-1.36) +
1137 0.456*sqrLogPlab - 4.03*LogPlab;
1138
1139 G4double XelPiP = 0.0 + 11.4*std::pow(Plab,-0.40) +
1140 0.079*sqrLogPlab - 0.0 *LogPlab;
1141
1142 G4double XelPiN = 1.76 + 11.2*std::pow(Plab,-0.64) +
1143 0.043*sqrLogPlab - 0.0 *LogPlab;
1144
1145 Xtotal = ( NumberOfTargetProtons * XtotPiP +
1146 NumberOfTargetNeutrons * XtotPiN );
1147
1148 Xelastic = ( NumberOfTargetProtons * XelPiP +
1149 NumberOfTargetNeutrons * XelPiN );
1150 }
1151 else if( PDGcode == -211 ) //------Projectile is PionMinus -------
1152 {
1153 G4double XtotPiP = 33.0 + 14.0 *std::pow(Plab,-1.36) +
1154 0.456*sqrLogPlab - 4.03*LogPlab;
1155
1156 G4double XtotPiN = 16.4 + 19.3 *std::pow(Plab,-0.42) +
1157 0.19 *sqrLogPlab - 0.0 *LogPlab;
1158
1159 G4double XelPiP = 1.76 + 11.2*std::pow(Plab,-0.64) +
1160 0.043*sqrLogPlab - 0.0 *LogPlab;
1161
1162 G4double XelPiN = 0.0 + 11.4*std::pow(Plab,-0.40) +
1163 0.079*sqrLogPlab - 0.0 *LogPlab;
1164
1165 Xtotal = ( NumberOfTargetProtons * XtotPiP +
1166 NumberOfTargetNeutrons * XtotPiN );
1167
1168 Xelastic = ( NumberOfTargetProtons * XelPiP +
1169 NumberOfTargetNeutrons * XelPiN );
1170 }
1171 else if( PDGcode == 111 ) //------Projectile is PionZero -------
1172 {
1173 G4double XtotPiP =(16.4 + 19.3 *std::pow(Plab,-0.42) +
1174 0.19 *sqrLogPlab - 0.0 *LogPlab + //Pi+
1175 33.0 + 14.0 *std::pow(Plab,-1.36) +
1176 0.456*sqrLogPlab - 4.03*LogPlab)/2; //Pi-
1177
1178 G4double XtotPiN =(33.0 + 14.0 *std::pow(Plab,-1.36) +
1179 0.456*sqrLogPlab - 4.03*LogPlab + //Pi+
1180 16.4 + 19.3 *std::pow(Plab,-0.42) +
1181 0.19 *sqrLogPlab - 0.0 *LogPlab)/2; //Pi-
1182
1183 G4double XelPiP =( 0.0 + 11.4*std::pow(Plab,-0.40) +
1184 0.079*sqrLogPlab - 0.0 *LogPlab + //Pi+
1185 1.76 + 11.2*std::pow(Plab,-0.64) +
1186 0.043*sqrLogPlab - 0.0 *LogPlab)/2; //Pi-
1187
1188 G4double XelPiN =( 1.76 + 11.2*std::pow(Plab,-0.64) +
1189 0.043*sqrLogPlab - 0.0 *LogPlab + //Pi+
1190 0.0 + 11.4*std::pow(Plab,-0.40) +
1191 0.079*sqrLogPlab - 0.0 *LogPlab)/2; //Pi-
1192
1193 Xtotal = ( NumberOfTargetProtons * XtotPiP +
1194 NumberOfTargetNeutrons * XtotPiN );
1195
1196 Xelastic = ( NumberOfTargetProtons * XelPiP +
1197 NumberOfTargetNeutrons * XelPiN );
1198 }
1199 else if( PDGcode == 321 ) //------Projectile is KaonPlus -------
1200 {
1201 G4double XtotKP = 18.1 + 0. *std::pow(Plab, 0. ) +
1202 0.26 *sqrLogPlab - 1.0 *LogPlab;
1203 G4double XtotKN = 18.7 + 0. *std::pow(Plab, 0. ) +
1204 0.21 *sqrLogPlab - 0.89*LogPlab;
1205
1206 G4double XelKP = 5.0 + 8.1*std::pow(Plab,-1.8 ) +
1207 0.16 *sqrLogPlab - 1.3 *LogPlab;
1208
1209 G4double XelKN = 7.3 + 0. *std::pow(Plab,-0. ) +
1210 0.29 *sqrLogPlab - 2.4 *LogPlab;
1211
1212 Xtotal = ( NumberOfTargetProtons * XtotKP +
1213 NumberOfTargetNeutrons * XtotKN );
1214
1215 Xelastic = ( NumberOfTargetProtons * XelKP +
1216 NumberOfTargetNeutrons * XelKN );
1217 }
1218 else if( PDGcode ==-321 ) //------Projectile is KaonMinus ------
1219 {
1220 G4double XtotKP = 32.1 + 0. *std::pow(Plab, 0. ) +
1221 0.66 *sqrLogPlab - 5.6 *LogPlab;
1222 G4double XtotKN = 25.2 + 0. *std::pow(Plab, 0. ) +
1223 0.38 *sqrLogPlab - 2.9 *LogPlab;
1224
1225 G4double XelKP = 7.3 + 0. *std::pow(Plab,-0. ) +
1226 0.29 *sqrLogPlab - 2.4 *LogPlab;
1227
1228 G4double XelKN = 5.0 + 8.1*std::pow(Plab,-1.8 ) +
1229 0.16 *sqrLogPlab - 1.3 *LogPlab;
1230
1231 Xtotal = ( NumberOfTargetProtons * XtotKP +
1232 NumberOfTargetNeutrons * XtotKN );
1233
1234 Xelastic = ( NumberOfTargetProtons * XelKP +
1235 NumberOfTargetNeutrons * XelKN );
1236 }
1237 else if( PDGcode == 311 ) //------Projectile is KaonZero ------
1238 {
1239 G4double XtotKP = ( 18.1 + 0. *std::pow(Plab, 0. ) +
1240 0.26 *sqrLogPlab - 1.0 *LogPlab + //K+
1241 32.1 + 0. *std::pow(Plab, 0. ) +
1242 0.66 *sqrLogPlab - 5.6 *LogPlab)/2; //K-
1243
1244 G4double XtotKN = ( 18.7 + 0. *std::pow(Plab, 0. ) +
1245 0.21 *sqrLogPlab - 0.89*LogPlab + //K+
1246 25.2 + 0. *std::pow(Plab, 0. ) +
1247 0.38 *sqrLogPlab - 2.9 *LogPlab)/2; //K-
1248
1249 G4double XelKP = ( 5.0 + 8.1*std::pow(Plab,-1.8 )
1250 + 0.16 *sqrLogPlab - 1.3 *LogPlab + //K+
1251 7.3 + 0. *std::pow(Plab,-0. ) +
1252 0.29 *sqrLogPlab - 2.4 *LogPlab)/2; //K-
1253
1254 G4double XelKN = ( 7.3 + 0. *std::pow(Plab,-0. ) +
1255 0.29 *sqrLogPlab - 2.4 *LogPlab + //K+
1256 5.0 + 8.1*std::pow(Plab,-1.8 ) +
1257 0.16 *sqrLogPlab - 1.3 *LogPlab)/2; //K-
1258
1259 Xtotal = ( NumberOfTargetProtons * XtotKP +
1260 NumberOfTargetNeutrons * XtotKN );
1261
1262 Xelastic = ( NumberOfTargetProtons * XelKP +
1263 NumberOfTargetNeutrons * XelKN );
1264 }
1265 else //------Projectile is undefined, Nucleon assumed
1266 {
1267 G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) +
1268 0.522*sqrLogPlab - 4.51*LogPlab;
1269
1270 G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) +
1271 0.513*sqrLogPlab - 4.27*LogPlab;
1272
1273 G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) +
1274 0.169*sqrLogPlab - 1.85*LogPlab;
1275 G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) +
1276 0.169*sqrLogPlab - 1.85*LogPlab;
1277
1278 Xtotal = ( NumberOfTargetProtons * XtotPP +
1279 NumberOfTargetNeutrons * XtotPN );
1280
1281 Xelastic = ( NumberOfTargetProtons * XelPP +
1282 NumberOfTargetNeutrons * XelPN );
1283 }
1284 Xinelastic = Xtotal - Xelastic;
1285
1286 if(Xinelastic < 0.) Xinelastic = 0.;
1287
1288 return Xinelastic*= millibarn;
1289}
1290
1291/////////////////////////////////////////////////////////////////////////////////////
1292//
1293// Returns hadron-nucleon cross-section based on Mikhail Kossov CHIPS parametrisation of
1294// data from G4QuasiFreeRatios class
1295
1296G4double
1297G4GlauberGribovCrossSection::GetHadronNucleonXscMK(const G4DynamicParticle* aParticle,
1298 const G4ParticleDefinition* nucleon )
1299{
1300 G4int I = -1;
1301 G4int PDG = aParticle->GetDefinition()->GetPDGEncoding();
1302 G4double totalXsc = 0;
1303 G4double elasticXsc = 0;
1304 G4double inelasticXsc;
1305 // G4int absPDG = std::abs(PDG);
1306
1307 G4double p = aParticle->GetMomentum().mag()/GeV;
1308
1309 G4bool F = false;
1310 if(nucleon == theProton) F = true;
1311 else if(nucleon == theNeutron) F = false;
1312 else
1313 {
1314 G4cout << "nucleon is not proton or neutron, return xsc for proton" << G4endl;
1315 F = true;
1316 }
1317
1318 G4bool kfl = true; // Flag of K0/aK0 oscillation
1319 G4bool kf = false;
1320
1321 if( PDG == 130 || PDG == 310 )
1322 {
1323 kf = true;
1324 if( G4UniformRand() > .5 ) kfl = false;
1325 }
1326 if ( (PDG == 2212 && F) || (PDG == 2112 && !F) ) I = 0; // pp/nn
1327 else if( (PDG == 2112 && F) || (PDG == 2212 && !F) ) I = 1; // np/pn
1328
1329 else if( (PDG == -211 && F) || (PDG == 211 && !F) ) I = 2; // pimp/pipn
1330 else if( (PDG == 211 && F) || (PDG ==-211 && !F) ) I = 3; // pipp/pimn
1331
1332 else if( PDG == -321 || PDG == -311 || ( kf && !kfl ) ) I = 4; // KmN/K0N
1333 else if( PDG == 321 || PDG == 311 || ( kf && kfl ) ) I = 5; // KpN/aK0N
1334
1335 else if( PDG > 3000 && PDG < 3335) I = 6; // @@ for all hyperons - take Lambda
1336 else if( PDG < -2000 && PDG > -3335) I = 7; // @@ for all anti-baryons - anti-p/anti-n
1337 else
1338 {
1339 G4cout<<"MK PDG = "<<PDG
1340 <<", while it is defined only for p,n,hyperons,anti-baryons,pi,K/antiK"<<G4endl;
1341 G4Exception("G4QuasiFreeRatio::FetchElTot:","22",FatalException,"CHIPScrash");
1342 }
1343
1344 // Each parameter set can have not more than nPoints = 128 parameters
1345
1346 static const G4double lmi = 3.5; // min of (lnP-lmi)^2 parabola
1347 static const G4double pbe = .0557; // elastic (lnP-lmi)^2 parabola coefficient
1348 static const G4double pbt = .3; // total (lnP-lmi)^2 parabola coefficient
1349 static const G4double pmi = .1; // Below that fast LE calculation is made
1350 static const G4double pma = 1000.; // Above that fast HE calculation is made
1351
1352 if( p <= 0.)
1353 {
1354 G4cout<<" p = "<<p<<" is zero or negative"<<G4endl;
1355
1356 elasticXsc = 0.;
1357 inelasticXsc = 0.;
1358 totalXsc = 0.;
1359
1360 return totalXsc;
1361 }
1362 if (!I) // pp/nn
1363 {
1364 if( p < pmi )
1365 {
1366 G4double p2 = p*p;
1367 elasticXsc = 1./(.00012 + p2*.2);
1368 totalXsc = elasticXsc;
1369 }
1370 else if(p>pma)
1371 {
1372 G4double lp = std::log(p)-lmi;
1373 G4double lp2 = lp*lp;
1374 elasticXsc = pbe*lp2 + 6.72;
1375 totalXsc = pbt*lp2 + 38.2;
1376 }
1377 else
1378 {
1379 G4double p2 = p*p;
1380 G4double LE = 1./( .00012 + p2*.2);
1381 G4double lp = std::log(p) - lmi;
1382 G4double lp2 = lp*lp;
1383 G4double rp2 = 1./p2;
1384 elasticXsc = LE + ( pbe*lp2 + 6.72+32.6/p)/( 1. + rp2/p);
1385 totalXsc = LE + ( pbt*lp2 + 38.2+52.7*rp2)/( 1. + 2.72*rp2*rp2);
1386 }
1387 }
1388 else if( I==1 ) // np/pn
1389 {
1390 if( p < pmi )
1391 {
1392 G4double p2 = p*p;
1393 elasticXsc = 1./( .00012 + p2*( .051 + .1*p2));
1394 totalXsc = elasticXsc;
1395 }
1396 else if( p > pma )
1397 {
1398 G4double lp = std::log(p) - lmi;
1399 G4double lp2 = lp*lp;
1400 elasticXsc = pbe*lp2 + 6.72;
1401 totalXsc = pbt*lp2 + 38.2;
1402 }
1403 else
1404 {
1405 G4double p2 = p*p;
1406 G4double LE = 1./( .00012 + p2*( .051 + .1*p2 ) );
1407 G4double lp = std::log(p) - lmi;
1408 G4double lp2 = lp*lp;
1409 G4double rp2 = 1./p2;
1410 elasticXsc = LE + (pbe*lp2 + 6.72 + 30./p)/( 1. + .49*rp2/p);
1411 totalXsc = LE + (pbt*lp2 + 38.2)/( 1. + .54*rp2*rp2);
1412 }
1413 }
1414 else if( I == 2 ) // pimp/pipn
1415 {
1416 G4double lp = std::log(p);
1417
1418 if(p<pmi)
1419 {
1420 G4double lr = lp + 1.27;
1421 elasticXsc = 1.53/( lr*lr + .0676);
1422 totalXsc = elasticXsc*3;
1423 }
1424 else if( p > pma )
1425 {
1426 G4double ld = lp - lmi;
1427 G4double ld2 = ld*ld;
1428 G4double sp = std::sqrt(p);
1429 elasticXsc = pbe*ld2 + 2.4 + 7./sp;
1430 totalXsc = pbt*ld2 + 22.3 + 12./sp;
1431 }
1432 else
1433 {
1434 G4double lr = lp + 1.27;
1435 G4double LE = 1.53/( lr*lr + .0676);
1436 G4double ld = lp - lmi;
1437 G4double ld2 = ld*ld;
1438 G4double p2 = p*p;
1439 G4double p4 = p2*p2;
1440 G4double sp = std::sqrt(p);
1441 G4double lm = lp + .36;
1442 G4double md = lm*lm + .04;
1443 G4double lh = lp - .017;
1444 G4double hd = lh*lh + .0025;
1445 elasticXsc = LE + (pbe*ld2 + 2.4 + 7./sp)/( 1. + .7/p4) + .6/md + .05/hd;
1446 totalXsc = LE*3 + (pbt*ld2 + 22.3 + 12./sp)/(1. + .4/p4) + 1./md + .06/hd;
1447 }
1448 }
1449 else if( I == 3 ) // pipp/pimn
1450 {
1451 G4double lp = std::log(p);
1452
1453 if( p < pmi )
1454 {
1455 G4double lr = lp + 1.27;
1456 G4double lr2 = lr*lr;
1457 elasticXsc = 13./( lr2 + lr2*lr2 + .0676);
1458 totalXsc = elasticXsc;
1459 }
1460 else if( p > pma )
1461 {
1462 G4double ld = lp - lmi;
1463 G4double ld2 = ld*ld;
1464 G4double sp = std::sqrt(p);
1465 elasticXsc = pbe*ld2 + 2.4 + 6./sp;
1466 totalXsc = pbt*ld2 + 22.3 + 5./sp;
1467 }
1468 else
1469 {
1470 G4double lr = lp + 1.27;
1471 G4double lr2 = lr*lr;
1472 G4double LE = 13./(lr2 + lr2*lr2 + .0676);
1473 G4double ld = lp - lmi;
1474 G4double ld2 = ld*ld;
1475 G4double p2 = p*p;
1476 G4double p4 = p2*p2;
1477 G4double sp = std::sqrt(p);
1478 G4double lm = lp - .32;
1479 G4double md = lm*lm + .0576;
1480 elasticXsc = LE + (pbe*ld2 + 2.4 + 6./sp)/(1. + 3./p4) + .7/md;
1481 totalXsc = LE + (pbt*ld2 + 22.3 + 5./sp)/(1. + 1./p4) + .8/md;
1482 }
1483 }
1484 else if( I == 4 ) // Kmp/Kmn/K0p/K0n
1485 {
1486 if( p < pmi)
1487 {
1488 G4double psp = p*std::sqrt(p);
1489 elasticXsc = 5.2/psp;
1490 totalXsc = 14./psp;
1491 }
1492 else if( p > pma )
1493 {
1494 G4double ld = std::log(p) - lmi;
1495 G4double ld2 = ld*ld;
1496 elasticXsc = pbe*ld2 + 2.23;
1497 totalXsc = pbt*ld2 + 19.5;
1498 }
1499 else
1500 {
1501 G4double ld = std::log(p) - lmi;
1502 G4double ld2 = ld*ld;
1503 G4double sp = std::sqrt(p);
1504 G4double psp = p*sp;
1505 G4double p2 = p*p;
1506 G4double p4 = p2*p2;
1507 G4double lm = p - .39;
1508 G4double md = lm*lm + .000156;
1509 G4double lh = p - 1.;
1510 G4double hd = lh*lh + .0156;
1511 elasticXsc = 5.2/psp + (pbe*ld2 + 2.23)/(1. - .7/sp + .075/p4) + .004/md + .15/hd;
1512 totalXsc = 14./psp + (pbt*ld2 + 19.5)/(1. - .21/sp + .52/p4) + .006/md + .30/hd;
1513 }
1514 }
1515 else if( I == 5 ) // Kpp/Kpn/aKp/aKn
1516 {
1517 if( p < pmi )
1518 {
1519 G4double lr = p - .38;
1520 G4double lm = p - 1.;
1521 G4double md = lm*lm + .372;
1522 elasticXsc = .7/(lr*lr + .0676) + 2./md;
1523 totalXsc = elasticXsc + .6/md;
1524 }
1525 else if( p > pma )
1526 {
1527 G4double ld = std::log(p) - lmi;
1528 G4double ld2 = ld*ld;
1529 elasticXsc = pbe*ld2 + 2.23;
1530 totalXsc = pbt*ld2 + 19.5;
1531 }
1532 else
1533 {
1534 G4double ld = std::log(p) - lmi;
1535 G4double ld2 = ld*ld;
1536 G4double lr = p - .38;
1537 G4double LE = .7/(lr*lr + .0676);
1538 G4double sp = std::sqrt(p);
1539 G4double p2 = p*p;
1540 G4double p4 = p2*p2;
1541 G4double lm = p - 1.;
1542 G4double md = lm*lm + .372;
1543 elasticXsc = LE + (pbe*ld2 + 2.23)/(1. - .7/sp + .1/p4) + 2./md;
1544 totalXsc = LE + (pbt*ld2 + 19.5)/(1. + .46/sp + 1.6/p4) + 2.6/md;
1545 }
1546 }
1547 else if( I == 6 ) // hyperon-N
1548 {
1549 if( p < pmi )
1550 {
1551 G4double p2 = p*p;
1552 elasticXsc = 1./(.002 + p2*(.12 + p2));
1553 totalXsc = elasticXsc;
1554 }
1555 else if( p > pma )
1556 {
1557 G4double lp = std::log(p) - lmi;
1558 G4double lp2 = lp*lp;
1559 G4double sp = std::sqrt(p);
1560 elasticXsc = (pbe*lp2 + 6.72)/(1. + 2./sp);
1561 totalXsc = (pbt*lp2 + 38.2 + 900./sp)/(1. + 27./sp);
1562 }
1563 else
1564 {
1565 G4double p2 = p*p;
1566 G4double LE = 1./(.002 + p2*(.12 + p2));
1567 G4double lp = std::log(p) - lmi;
1568 G4double lp2 = lp*lp;
1569 G4double p4 = p2*p2;
1570 G4double sp = std::sqrt(p);
1571 elasticXsc = LE + (pbe*lp2 + 6.72 + 99./p2)/(1. + 2./sp + 2./p4);
1572 totalXsc = LE + (pbt*lp2 + 38.2 + 900./sp)/(1. + 27./sp + 3./p4);
1573 }
1574 }
1575 else if( I == 7 ) // antibaryon-N
1576 {
1577 if( p > pma )
1578 {
1579 G4double lp = std::log(p) - lmi;
1580 G4double lp2 = lp*lp;
1581 elasticXsc = pbe*lp2 + 6.72;
1582 totalXsc = pbt*lp2 + 38.2;
1583 }
1584 else
1585 {
1586 G4double ye = std::pow(p, 1.25);
1587 G4double yt = std::pow(p, .35);
1588 G4double lp = std::log(p) - lmi;
1589 G4double lp2 = lp*lp;
1590 elasticXsc = 80./(ye + 1.) + pbe*lp2 + 6.72;
1591 totalXsc = (80./yt + .3)/yt +pbt*lp2 + 38.2;
1592 }
1593 }
1594 else
1595 {
1596 G4cout<<"PDG incoding = "<<I<<" is not defined (0-7)"<<G4endl;
1597
1598 }
1599 if( elasticXsc > totalXsc ) elasticXsc = totalXsc;
1600
1601 totalXsc *= millibarn;
1602 elasticXsc *= millibarn;
1603 inelasticXsc = totalXsc - elasticXsc;
1604 if (inelasticXsc < 0.) inelasticXsc = 0.;
1605
1606 return inelasticXsc;
1607}
1608
1609////////////////////////////////////////////////////////////////////////////////////
1610//
1611//
1612
1613G4double
1614G4GlauberGribovCrossSection::GetNucleusRadius( const G4DynamicParticle* ,
1615 const G4Element* anElement)
1616{
1617 G4double At = anElement->GetN();
1618 G4double oneThird = 1.0/3.0;
1619 G4double cubicrAt = std::pow (At, oneThird);
1620
1621
1622 G4double R; // = fRadiusConst*cubicrAt;
1623 /*
1624 G4double tmp = std::pow( cubicrAt-1., 3.);
1625 tmp += At;
1626 tmp *= 0.5;
1627
1628 if (At > 20.) // 20.
1629 {
1630 R = fRadiusConst*std::pow (tmp, oneThird);
1631 }
1632 else
1633 {
1634 R = fRadiusConst*cubicrAt;
1635 }
1636 */
1637
1638 R = fRadiusConst*cubicrAt;
1639
1640 // return R; // !!!!
1641
1642
1643
1644 G4double meanA = 21.;
1645
1646 G4double tauA1 = 40.;
1647 G4double tauA2 = 10.;
1648 G4double tauA3 = 5.;
1649
1650 G4double a1 = 0.85;
1651 G4double b1 = 1. - a1;
1652
1653 G4double b2 = 0.3;
1654 G4double b3 = 4.;
1655
1656 if (At > 20.) // 20.
1657 {
1658 R *= ( a1 + b1*std::exp( -(At - meanA)/tauA1) );
1659 }
1660 else if (At > 3.5)
1661 {
1662 R *= ( 1.0 + b2*( 1. - std::exp( (At - meanA)/tauA2) ) );
1663 }
1664 else
1665 {
1666 R *= ( 1.0 + b3*( 1. - std::exp( (At - meanA)/tauA3) ) );
1667 }
1668 return R;
1669
1670}
1671////////////////////////////////////////////////////////////////////////////////////
1672//
1673//
1674
1675G4double
1676G4GlauberGribovCrossSection::GetNucleusRadius(G4double At)
1677{
1678 G4double oneThird = 1.0/3.0;
1679 G4double cubicrAt = std::pow (At, oneThird);
1680
1681
1682 G4double R; // = fRadiusConst*cubicrAt;
1683
1684 /*
1685 G4double tmp = std::pow( cubicrAt-1., 3.);
1686 tmp += At;
1687 tmp *= 0.5;
1688
1689 if (At > 20.)
1690 {
1691 R = fRadiusConst*std::pow (tmp, oneThird);
1692 }
1693 else
1694 {
1695 R = fRadiusConst*cubicrAt;
1696 }
1697 */
1698
1699 R = fRadiusConst*cubicrAt;
1700
1701 G4double meanA = 20.;
1702 G4double tauA = 20.;
1703
1704 if (At > 20.) // 20.
1705 {
1706 R *= ( 0.8 + 0.2*std::exp( -(At - meanA)/tauA) );
1707 }
1708 else
1709 {
1710 R *= ( 1.0 + 0.1*( 1. - std::exp( (At - meanA)/tauA) ) );
1711 }
1712
1713 return R;
1714}
1715
1716////////////////////////////////////////////////////////////////////////////////////
1717//
1718//
1719
1720G4double G4GlauberGribovCrossSection::CalculateEcmValue( const G4double mp ,
1721 const G4double mt ,
1722 const G4double Plab )
1723{
1724 G4double Elab = std::sqrt ( mp * mp + Plab * Plab );
1725 G4double Ecm = std::sqrt ( mp * mp + mt * mt + 2 * Elab * mt );
1726 // G4double Pcm = Plab * mt / Ecm;
1727 // G4double KEcm = std::sqrt ( Pcm * Pcm + mp * mp ) - mp;
1728
1729 return Ecm ; // KEcm;
1730}
1731
1732
1733////////////////////////////////////////////////////////////////////////////////////
1734//
1735//
1736
1737G4double G4GlauberGribovCrossSection::CalcMandelstamS( const G4double mp ,
1738 const G4double mt ,
1739 const G4double Plab )
1740{
1741 G4double Elab = std::sqrt ( mp * mp + Plab * Plab );
1742 G4double sMand = mp*mp + mt*mt + 2*Elab*mt ;
1743
1744 return sMand;
1745}
1746
1747
1748//
1749//
1750///////////////////////////////////////////////////////////////////////////////////////
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