[819] | 1 | // |
---|
| 2 | // ******************************************************************** |
---|
| 3 | // * License and Disclaimer * |
---|
| 4 | // * * |
---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
| 9 | // * include a list of copyright holders. * |
---|
| 10 | // * * |
---|
| 11 | // * Neither the authors of this software system, nor their employing * |
---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
---|
| 13 | // * work make any representation or warranty, express or implied, * |
---|
| 14 | // * regarding this software system or assume any liability for its * |
---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
---|
| 17 | // * * |
---|
| 18 | // * This code implementation is the result of the scientific and * |
---|
| 19 | // * technical work of the GEANT4 collaboration. * |
---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
---|
| 22 | // * use in resulting scientific publications, and indicate your * |
---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
| 24 | // ******************************************************************** |
---|
| 25 | // |
---|
| 26 | // |
---|
| 27 | // 14.03.07 V. Grichine - first implementation |
---|
| 28 | // |
---|
| 29 | |
---|
| 30 | #include "G4HadronNucleonXsc.hh" |
---|
| 31 | |
---|
| 32 | #include "G4ParticleTable.hh" |
---|
| 33 | #include "G4IonTable.hh" |
---|
| 34 | #include "G4ParticleDefinition.hh" |
---|
| 35 | |
---|
| 36 | ////////////////////////////////////////////////////////////////////////////////////// |
---|
| 37 | // |
---|
| 38 | // |
---|
| 39 | |
---|
| 40 | |
---|
| 41 | G4HadronNucleonXsc::G4HadronNucleonXsc() |
---|
| 42 | : fUpperLimit( 10000 * GeV ), |
---|
| 43 | fLowerLimit( 0.03 * MeV ) |
---|
| 44 | { |
---|
| 45 | theGamma = G4Gamma::Gamma(); |
---|
| 46 | theProton = G4Proton::Proton(); |
---|
| 47 | theNeutron = G4Neutron::Neutron(); |
---|
| 48 | theAProton = G4AntiProton::AntiProton(); |
---|
| 49 | theANeutron = G4AntiNeutron::AntiNeutron(); |
---|
| 50 | thePiPlus = G4PionPlus::PionPlus(); |
---|
| 51 | thePiMinus = G4PionMinus::PionMinus(); |
---|
| 52 | thePiZero = G4PionZero::PionZero(); |
---|
| 53 | theKPlus = G4KaonPlus::KaonPlus(); |
---|
| 54 | theKMinus = G4KaonMinus::KaonMinus(); |
---|
| 55 | theK0S = G4KaonZeroShort::KaonZeroShort(); |
---|
| 56 | theK0L = G4KaonZeroLong::KaonZeroLong(); |
---|
| 57 | theL = G4Lambda::Lambda(); |
---|
| 58 | theAntiL = G4AntiLambda::AntiLambda(); |
---|
| 59 | theSPlus = G4SigmaPlus::SigmaPlus(); |
---|
| 60 | theASPlus = G4AntiSigmaPlus::AntiSigmaPlus(); |
---|
| 61 | theSMinus = G4SigmaMinus::SigmaMinus(); |
---|
| 62 | theASMinus = G4AntiSigmaMinus::AntiSigmaMinus(); |
---|
| 63 | theS0 = G4SigmaZero::SigmaZero(); |
---|
| 64 | theAS0 = G4AntiSigmaZero::AntiSigmaZero(); |
---|
| 65 | theXiMinus = G4XiMinus::XiMinus(); |
---|
| 66 | theXi0 = G4XiZero::XiZero(); |
---|
| 67 | theAXiMinus = G4AntiXiMinus::AntiXiMinus(); |
---|
| 68 | theAXi0 = G4AntiXiZero::AntiXiZero(); |
---|
| 69 | theOmega = G4OmegaMinus::OmegaMinus(); |
---|
| 70 | theAOmega = G4AntiOmegaMinus::AntiOmegaMinus(); |
---|
| 71 | theD = G4Deuteron::Deuteron(); |
---|
| 72 | theT = G4Triton::Triton(); |
---|
| 73 | theA = G4Alpha::Alpha(); |
---|
| 74 | theHe3 = G4He3::He3(); |
---|
| 75 | } |
---|
| 76 | |
---|
| 77 | /////////////////////////////////////////////////////////////////////////////////////// |
---|
| 78 | // |
---|
| 79 | // |
---|
| 80 | |
---|
| 81 | G4HadronNucleonXsc::~G4HadronNucleonXsc() |
---|
| 82 | { |
---|
| 83 | } |
---|
| 84 | |
---|
| 85 | |
---|
| 86 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
| 87 | // |
---|
| 88 | // |
---|
| 89 | |
---|
| 90 | |
---|
| 91 | G4bool |
---|
| 92 | G4HadronNucleonXsc::IsApplicable(const G4DynamicParticle* aDP, |
---|
| 93 | const G4Element* anElement) |
---|
| 94 | { |
---|
| 95 | return IsZAApplicable(aDP, anElement->GetZ(), anElement->GetN()); |
---|
| 96 | } |
---|
| 97 | |
---|
| 98 | //////////////////////////////////////////////////////////////////////////////////////// |
---|
| 99 | // |
---|
| 100 | // |
---|
| 101 | |
---|
| 102 | G4bool |
---|
| 103 | G4HadronNucleonXsc::IsZAApplicable(const G4DynamicParticle* aDP, |
---|
| 104 | G4double Z, G4double) |
---|
| 105 | { |
---|
| 106 | G4bool applicable = false; |
---|
| 107 | // G4int baryonNumber = aDP->GetDefinition()->GetBaryonNumber(); |
---|
| 108 | G4double kineticEnergy = aDP->GetKineticEnergy(); |
---|
| 109 | |
---|
| 110 | const G4ParticleDefinition* theParticle = aDP->GetDefinition(); |
---|
| 111 | |
---|
| 112 | if ( ( kineticEnergy >= fLowerLimit && |
---|
| 113 | Z > 1.5 && // >= He |
---|
| 114 | ( theParticle == theAProton || |
---|
| 115 | theParticle == theGamma || |
---|
| 116 | theParticle == theKPlus || |
---|
| 117 | theParticle == theKMinus || |
---|
| 118 | theParticle == theSMinus) ) || |
---|
| 119 | |
---|
| 120 | ( kineticEnergy >= 0.1*fLowerLimit && |
---|
| 121 | Z > 1.5 && // >= He |
---|
| 122 | ( theParticle == theProton || |
---|
| 123 | theParticle == theNeutron || |
---|
| 124 | theParticle == thePiPlus || |
---|
| 125 | theParticle == thePiMinus ) ) ) applicable = true; |
---|
| 126 | |
---|
| 127 | return applicable; |
---|
| 128 | } |
---|
| 129 | |
---|
| 130 | |
---|
| 131 | |
---|
| 132 | |
---|
| 133 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 134 | // |
---|
| 135 | // Returns hadron-nucleon Xsc according to differnt parametrisations: |
---|
| 136 | // [2] E. Levin, hep-ph/9710546 |
---|
| 137 | // [3] U. Dersch, et al, hep-ex/9910052 |
---|
| 138 | // [4] M.J. Longo, et al, Phys.Rev.Lett. 33 (1974) 725 |
---|
| 139 | |
---|
| 140 | G4double |
---|
| 141 | G4HadronNucleonXsc::GetHadronNucleonXscEL(const G4DynamicParticle* aParticle, |
---|
| 142 | const G4ParticleDefinition* nucleon ) |
---|
| 143 | { |
---|
| 144 | G4double xsection; |
---|
| 145 | |
---|
| 146 | |
---|
| 147 | G4double targ_mass = 0.939*GeV; // ~mean neutron and proton ??? |
---|
| 148 | |
---|
| 149 | G4double proj_mass = aParticle->GetMass(); |
---|
| 150 | G4double proj_momentum = aParticle->GetMomentum().mag(); |
---|
| 151 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum ); |
---|
| 152 | |
---|
| 153 | sMand /= GeV*GeV; // in GeV for parametrisation |
---|
| 154 | proj_momentum /= GeV; |
---|
| 155 | |
---|
| 156 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition(); |
---|
| 157 | |
---|
| 158 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
---|
| 159 | |
---|
| 160 | |
---|
| 161 | if(theParticle == theGamma && pORn ) |
---|
| 162 | { |
---|
| 163 | xsection = (0.0677*std::pow(sMand,0.0808) + 0.129*std::pow(sMand,-0.4525)); |
---|
| 164 | } |
---|
| 165 | else if(theParticle == theNeutron && pORn ) // as proton ??? |
---|
| 166 | { |
---|
| 167 | xsection = (21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525)); |
---|
| 168 | } |
---|
| 169 | else if(theParticle == theProton && pORn ) |
---|
| 170 | { |
---|
| 171 | xsection = (21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525)); |
---|
| 172 | |
---|
| 173 | // xsection = At*( 49.51*std::pow(sMand,-0.097) + 0.314*std::log(sMand)*std::log(sMand) ); |
---|
| 174 | // xsection = At*( 38.4 + 0.85*std::abs(std::pow(log(sMand),1.47)) ); |
---|
| 175 | } |
---|
| 176 | else if(theParticle == theAProton && pORn ) |
---|
| 177 | { |
---|
| 178 | xsection = ( 21.70*std::pow(sMand,0.0808) + 98.39*std::pow(sMand,-0.4525)); |
---|
| 179 | } |
---|
| 180 | else if(theParticle == thePiPlus && pORn ) |
---|
| 181 | { |
---|
| 182 | xsection = (13.63*std::pow(sMand,0.0808) + 27.56*std::pow(sMand,-0.4525)); |
---|
| 183 | } |
---|
| 184 | else if(theParticle == thePiMinus && pORn ) |
---|
| 185 | { |
---|
| 186 | // xsection = At*( 55.2*std::pow(sMand,-0.255) + 0.346*std::log(sMand)*std::log(sMand) ); |
---|
| 187 | xsection = (13.63*std::pow(sMand,0.0808) + 36.02*std::pow(sMand,-0.4525)); |
---|
| 188 | } |
---|
| 189 | else if(theParticle == theKPlus && pORn ) |
---|
| 190 | { |
---|
| 191 | xsection = (11.82*std::pow(sMand,0.0808) + 8.15*std::pow(sMand,-0.4525)); |
---|
| 192 | } |
---|
| 193 | else if(theParticle == theKMinus && pORn ) |
---|
| 194 | { |
---|
| 195 | xsection = (11.82*std::pow(sMand,0.0808) + 26.36*std::pow(sMand,-0.4525)); |
---|
| 196 | } |
---|
| 197 | else // as proton ??? |
---|
| 198 | { |
---|
| 199 | xsection = (21.70*std::pow(sMand,0.0808) + 56.08*std::pow(sMand,-0.4525)); |
---|
| 200 | } |
---|
| 201 | xsection *= millibarn; |
---|
| 202 | |
---|
| 203 | fTotalXsc = xsection; |
---|
| 204 | fInelasticXsc = 0.83*xsection; |
---|
| 205 | fElasticXsc = fTotalXsc - fInelasticXsc; |
---|
| 206 | if (fElasticXsc < 0.)fElasticXsc = 0.; |
---|
| 207 | |
---|
| 208 | return xsection; |
---|
| 209 | } |
---|
| 210 | |
---|
| 211 | |
---|
| 212 | |
---|
| 213 | |
---|
| 214 | |
---|
| 215 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 216 | // |
---|
| 217 | // Returns hadron-nucleon Xsc according to PDG parametrisation (2005): |
---|
| 218 | // http://pdg.lbl.gov/2006/reviews/hadronicrpp.pdf |
---|
| 219 | // At = number of nucleons, Zt = number of protons |
---|
| 220 | |
---|
| 221 | G4double |
---|
| 222 | G4HadronNucleonXsc::GetHadronNucleonXscPDG(const G4DynamicParticle* aParticle, |
---|
| 223 | const G4ParticleDefinition* nucleon ) |
---|
| 224 | { |
---|
| 225 | G4double xsection(0); |
---|
| 226 | G4int Zt=1, Nt=1, At=1; |
---|
| 227 | |
---|
| 228 | G4double targ_mass = 0.939*GeV; // ~mean neutron and proton ??? |
---|
| 229 | |
---|
| 230 | G4double proj_mass = aParticle->GetMass(); |
---|
| 231 | G4double proj_momentum = aParticle->GetMomentum().mag(); |
---|
| 232 | |
---|
| 233 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum ); |
---|
| 234 | |
---|
| 235 | sMand /= GeV*GeV; // in GeV for parametrisation |
---|
| 236 | |
---|
| 237 | // General PDG fit constants |
---|
| 238 | |
---|
| 239 | G4double s0 = 5.38*5.38; // in Gev^2 |
---|
| 240 | G4double eta1 = 0.458; |
---|
| 241 | G4double eta2 = 0.458; |
---|
| 242 | G4double B = 0.308; |
---|
| 243 | |
---|
| 244 | |
---|
| 245 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition(); |
---|
| 246 | |
---|
| 247 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
---|
| 248 | G4bool proton = (nucleon == theProton); |
---|
| 249 | G4bool neutron = (nucleon == theNeutron); |
---|
| 250 | |
---|
| 251 | |
---|
| 252 | if(theParticle == theNeutron) // proton-neutron fit |
---|
| 253 | { |
---|
| 254 | if ( proton ) |
---|
| 255 | { |
---|
| 256 | xsection = Zt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 257 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2));// on p |
---|
| 258 | } |
---|
| 259 | if ( neutron ) |
---|
| 260 | { |
---|
| 261 | xsection = Nt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 262 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2)); // on n pp for nn |
---|
| 263 | } |
---|
| 264 | } |
---|
| 265 | else if(theParticle == theProton) |
---|
| 266 | { |
---|
| 267 | if ( proton ) |
---|
| 268 | { |
---|
| 269 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 270 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2)); |
---|
| 271 | } |
---|
| 272 | if ( neutron ) |
---|
| 273 | { |
---|
| 274 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 275 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2)); |
---|
| 276 | } |
---|
| 277 | } |
---|
| 278 | else if(theParticle == theAProton) |
---|
| 279 | { |
---|
| 280 | if ( proton ) |
---|
| 281 | { |
---|
| 282 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 283 | + 42.53*std::pow(sMand,-eta1) + 33.34*std::pow(sMand,-eta2)); |
---|
| 284 | } |
---|
| 285 | if ( neutron ) |
---|
| 286 | { |
---|
| 287 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 288 | + 40.15*std::pow(sMand,-eta1) + 30.*std::pow(sMand,-eta2)); |
---|
| 289 | } |
---|
| 290 | } |
---|
| 291 | else if(theParticle == thePiPlus && pORn ) |
---|
| 292 | { |
---|
| 293 | xsection = At*( 20.86 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 294 | + 19.24*std::pow(sMand,-eta1) - 6.03*std::pow(sMand,-eta2)); |
---|
| 295 | } |
---|
| 296 | else if(theParticle == thePiMinus && pORn ) |
---|
| 297 | { |
---|
| 298 | xsection = At*( 20.86 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 299 | + 19.24*std::pow(sMand,-eta1) + 6.03*std::pow(sMand,-eta2)); |
---|
| 300 | } |
---|
| 301 | else if(theParticle == theKPlus) |
---|
| 302 | { |
---|
| 303 | if ( proton ) |
---|
| 304 | { |
---|
| 305 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 306 | + 7.14*std::pow(sMand,-eta1) - 13.45*std::pow(sMand,-eta2)); |
---|
| 307 | } |
---|
| 308 | if ( neutron ) |
---|
| 309 | { |
---|
| 310 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 311 | + 5.17*std::pow(sMand,-eta1) - 7.23*std::pow(sMand,-eta2)); |
---|
| 312 | } |
---|
| 313 | } |
---|
| 314 | else if(theParticle == theKMinus) |
---|
| 315 | { |
---|
| 316 | if ( proton ) |
---|
| 317 | { |
---|
| 318 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 319 | + 7.14*std::pow(sMand,-eta1) + 13.45*std::pow(sMand,-eta2)); |
---|
| 320 | } |
---|
| 321 | if ( neutron ) |
---|
| 322 | { |
---|
| 323 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 324 | + 5.17*std::pow(sMand,-eta1) + 7.23*std::pow(sMand,-eta2) ); |
---|
| 325 | } |
---|
| 326 | } |
---|
| 327 | else if(theParticle == theSMinus && pORn ) |
---|
| 328 | { |
---|
| 329 | xsection = At*( 35.20 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 330 | - 199.*std::pow(sMand,-eta1) + 264.*std::pow(sMand,-eta2) ); |
---|
| 331 | } |
---|
| 332 | else if(theParticle == theGamma && pORn ) // modify later on |
---|
| 333 | { |
---|
| 334 | xsection = At*( 0.0 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 335 | + 0.032*std::pow(sMand,-eta1) - 0.0*std::pow(sMand,-eta2) ); |
---|
| 336 | |
---|
| 337 | } |
---|
| 338 | else // as proton ??? |
---|
| 339 | { |
---|
| 340 | if ( proton ) |
---|
| 341 | { |
---|
| 342 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 343 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2) ); |
---|
| 344 | } |
---|
| 345 | if ( neutron ) |
---|
| 346 | { |
---|
| 347 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 348 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2)); |
---|
| 349 | } |
---|
| 350 | } |
---|
| 351 | xsection *= millibarn; // parametrised in mb |
---|
| 352 | |
---|
| 353 | fTotalXsc = xsection; |
---|
| 354 | fInelasticXsc = 0.83*xsection; |
---|
| 355 | fElasticXsc = fTotalXsc - fInelasticXsc; |
---|
| 356 | if (fElasticXsc < 0.)fElasticXsc = 0.; |
---|
| 357 | |
---|
| 358 | return xsection; |
---|
| 359 | } |
---|
| 360 | |
---|
| 361 | |
---|
| 362 | |
---|
| 363 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 364 | // |
---|
| 365 | // Returns hadron-nucleon cross-section based on N. Starkov parametrisation of |
---|
| 366 | // data from mainly http://wwwppds.ihep.su:8001/c5-6A.html database |
---|
| 367 | |
---|
| 368 | G4double |
---|
| 369 | G4HadronNucleonXsc::GetHadronNucleonXscNS(const G4DynamicParticle* aParticle, |
---|
| 370 | const G4ParticleDefinition* nucleon ) |
---|
| 371 | { |
---|
| 372 | G4double xsection(0), Delta, A0, B0; |
---|
| 373 | G4int Zt=1, Nt=1, At=1; |
---|
| 374 | G4double hpXsc(0); |
---|
| 375 | G4double hnXsc(0); |
---|
| 376 | |
---|
| 377 | |
---|
| 378 | G4double targ_mass = 0.939*GeV; // ~mean neutron and proton ??? |
---|
| 379 | |
---|
| 380 | G4double proj_mass = aParticle->GetMass(); |
---|
| 381 | G4double proj_energy = aParticle->GetTotalEnergy(); |
---|
| 382 | G4double proj_momentum = aParticle->GetMomentum().mag(); |
---|
| 383 | |
---|
| 384 | G4double sMand = CalcMandelstamS ( proj_mass , targ_mass , proj_momentum ); |
---|
| 385 | |
---|
| 386 | sMand /= GeV*GeV; // in GeV for parametrisation |
---|
| 387 | proj_momentum /= GeV; |
---|
| 388 | proj_energy /= GeV; |
---|
| 389 | proj_mass /= GeV; |
---|
| 390 | |
---|
| 391 | // General PDG fit constants |
---|
| 392 | |
---|
| 393 | G4double s0 = 5.38*5.38; // in Gev^2 |
---|
| 394 | G4double eta1 = 0.458; |
---|
| 395 | G4double eta2 = 0.458; |
---|
| 396 | G4double B = 0.308; |
---|
| 397 | |
---|
| 398 | |
---|
| 399 | const G4ParticleDefinition* theParticle = aParticle->GetDefinition(); |
---|
| 400 | |
---|
| 401 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
---|
| 402 | G4bool proton = (nucleon == theProton); |
---|
| 403 | G4bool neutron = (nucleon == theNeutron); |
---|
| 404 | |
---|
| 405 | if( theParticle == theNeutron && pORn) |
---|
| 406 | { |
---|
| 407 | if( proj_momentum >= 10.) |
---|
| 408 | // if( proj_momentum >= 2.) |
---|
| 409 | { |
---|
| 410 | Delta = 1.; |
---|
| 411 | |
---|
| 412 | if( proj_energy < 40. ) Delta = 0.916+0.0021*proj_energy; |
---|
| 413 | |
---|
| 414 | if(proj_momentum >= 10.) |
---|
| 415 | { |
---|
| 416 | B0 = 7.5; |
---|
| 417 | A0 = 100. - B0*std::log(3.0e7); |
---|
| 418 | |
---|
| 419 | xsection = A0 + B0*std::log(proj_energy) - 11 |
---|
| 420 | + 103*std::pow(2*0.93827*proj_energy + proj_mass*proj_mass+ |
---|
| 421 | 0.93827*0.93827,-0.165); // mb |
---|
| 422 | } |
---|
| 423 | fTotalXsc = xsection; |
---|
| 424 | } |
---|
| 425 | else |
---|
| 426 | { |
---|
| 427 | // nn to be pp |
---|
| 428 | |
---|
| 429 | if(neutron) |
---|
| 430 | { |
---|
| 431 | if( proj_momentum < 0.73 ) |
---|
| 432 | { |
---|
| 433 | hnXsc = 23 + 50*( std::pow( std::log(0.73/proj_momentum), 3.5 ) ); |
---|
| 434 | } |
---|
| 435 | else if( proj_momentum < 1.05 ) |
---|
| 436 | { |
---|
| 437 | hnXsc = 23 + 40*(std::log(proj_momentum/0.73))* |
---|
| 438 | (std::log(proj_momentum/0.73)); |
---|
| 439 | } |
---|
| 440 | else // if( proj_momentum < 10. ) |
---|
| 441 | { |
---|
| 442 | hnXsc = 39.0+ |
---|
| 443 | 75*(proj_momentum - 1.2)/(std::pow(proj_momentum,3.0) + 0.15); |
---|
| 444 | } |
---|
| 445 | fTotalXsc = hnXsc; |
---|
| 446 | } |
---|
| 447 | // pn to be np |
---|
| 448 | |
---|
| 449 | if(proton) |
---|
| 450 | { |
---|
| 451 | if( proj_momentum < 0.8 ) |
---|
| 452 | { |
---|
| 453 | hpXsc = 33+30*std::pow(std::log(proj_momentum/1.3),4.0); |
---|
| 454 | } |
---|
| 455 | else if( proj_momentum < 1.4 ) |
---|
| 456 | { |
---|
| 457 | hpXsc = 33+30*std::pow(std::log(proj_momentum/0.95),2.0); |
---|
| 458 | } |
---|
| 459 | else // if( proj_momentum < 10. ) |
---|
| 460 | { |
---|
| 461 | hpXsc = 33.3+ |
---|
| 462 | 20.8*(std::pow(proj_momentum,2.0)-1.35)/ |
---|
| 463 | (std::pow(proj_momentum,2.50)+0.95); |
---|
| 464 | } |
---|
| 465 | fTotalXsc = hpXsc; |
---|
| 466 | } |
---|
| 467 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
| 468 | } |
---|
| 469 | } |
---|
| 470 | else if(theParticle == theProton && pORn) |
---|
| 471 | { |
---|
| 472 | if( proj_momentum >= 10.) |
---|
| 473 | // if( proj_momentum >= 2.) |
---|
| 474 | { |
---|
| 475 | Delta = 1.; |
---|
| 476 | |
---|
| 477 | if( proj_energy < 40. ) Delta = 0.916+0.0021*proj_energy; |
---|
| 478 | |
---|
| 479 | if(proj_momentum >= 10.) |
---|
| 480 | { |
---|
| 481 | B0 = 7.5; |
---|
| 482 | A0 = 100. - B0*std::log(3.0e7); |
---|
| 483 | |
---|
| 484 | xsection = A0 + B0*std::log(proj_energy) - 11 |
---|
| 485 | + 103*std::pow(2*0.93827*proj_energy + proj_mass*proj_mass+ |
---|
| 486 | 0.93827*0.93827,-0.165); // mb |
---|
| 487 | } |
---|
| 488 | fTotalXsc = xsection; |
---|
| 489 | } |
---|
| 490 | else |
---|
| 491 | { |
---|
| 492 | // pp |
---|
| 493 | |
---|
| 494 | if(proton) |
---|
| 495 | { |
---|
| 496 | if( proj_momentum < 0.73 ) |
---|
| 497 | { |
---|
| 498 | hpXsc = 23 + 50*( std::pow( std::log(0.73/proj_momentum), 3.5 ) ); |
---|
| 499 | } |
---|
| 500 | else if( proj_momentum < 1.05 ) |
---|
| 501 | { |
---|
| 502 | hpXsc = 23 + 40*(std::log(proj_momentum/0.73))* |
---|
| 503 | (std::log(proj_momentum/0.73)); |
---|
| 504 | } |
---|
| 505 | else // if( proj_momentum < 10. ) |
---|
| 506 | { |
---|
| 507 | hpXsc = 39.0+ |
---|
| 508 | 75*(proj_momentum - 1.2)/(std::pow(proj_momentum,3.0) + 0.15); |
---|
| 509 | } |
---|
| 510 | fTotalXsc = hpXsc; |
---|
| 511 | } |
---|
| 512 | // pn to be np |
---|
| 513 | |
---|
| 514 | if(neutron) |
---|
| 515 | { |
---|
| 516 | if( proj_momentum < 0.8 ) |
---|
| 517 | { |
---|
| 518 | hnXsc = 33+30*std::pow(std::log(proj_momentum/1.3),4.0); |
---|
| 519 | } |
---|
| 520 | else if( proj_momentum < 1.4 ) |
---|
| 521 | { |
---|
| 522 | hnXsc = 33+30*std::pow(std::log(proj_momentum/0.95),2.0); |
---|
| 523 | } |
---|
| 524 | else // if( proj_momentum < 10. ) |
---|
| 525 | { |
---|
| 526 | hnXsc = 33.3+ |
---|
| 527 | 20.8*(std::pow(proj_momentum,2.0)-1.35)/ |
---|
| 528 | (std::pow(proj_momentum,2.50)+0.95); |
---|
| 529 | } |
---|
| 530 | fTotalXsc = hnXsc; |
---|
| 531 | } |
---|
| 532 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
| 533 | // xsection = hpXsc*(Zt + Nt); |
---|
| 534 | // xsection = hnXsc*(Zt + Nt); |
---|
| 535 | } |
---|
| 536 | // xsection *= 0.95; |
---|
| 537 | } |
---|
| 538 | else if(theParticle == theAProton && pORn) |
---|
| 539 | { |
---|
| 540 | if(proton) |
---|
| 541 | { |
---|
| 542 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 543 | + 42.53*std::pow(sMand,-eta1) + 33.34*std::pow(sMand,-eta2)); |
---|
| 544 | } |
---|
| 545 | if(proton) |
---|
| 546 | { |
---|
| 547 | xsection = Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 548 | + 40.15*std::pow(sMand,-eta1) + 30.*std::pow(sMand,-eta2)); |
---|
| 549 | } |
---|
| 550 | fTotalXsc = xsection; |
---|
| 551 | } |
---|
| 552 | else if(theParticle == thePiPlus && pORn) |
---|
| 553 | { |
---|
| 554 | if(proton) |
---|
| 555 | { |
---|
| 556 | if(proj_momentum < 0.4) |
---|
| 557 | { |
---|
| 558 | G4double Ex3 = 180*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.085/0.085); |
---|
| 559 | hpXsc = Ex3+20.0; |
---|
| 560 | } |
---|
| 561 | else if(proj_momentum < 1.15) |
---|
| 562 | { |
---|
| 563 | G4double Ex4 = 88*(std::log(proj_momentum/0.75))*(std::log(proj_momentum/0.75)); |
---|
| 564 | hpXsc = Ex4+14.0; |
---|
| 565 | } |
---|
| 566 | else if(proj_momentum < 3.5) |
---|
| 567 | { |
---|
| 568 | G4double Ex1 = 3.2*std::exp(-(proj_momentum-2.55)*(proj_momentum-2.55)/0.55/0.55); |
---|
| 569 | G4double Ex2 = 12*std::exp(-(proj_momentum-1.47)*(proj_momentum-1.47)/0.225/0.225); |
---|
| 570 | hpXsc = Ex1+Ex2+27.5; |
---|
| 571 | } |
---|
| 572 | else // if(proj_momentum > 3.5) // mb |
---|
| 573 | { |
---|
| 574 | hpXsc = 10.6+2.*std::log(proj_energy)+25*std::pow(proj_energy,-0.43); |
---|
| 575 | } |
---|
| 576 | fTotalXsc = hpXsc; |
---|
| 577 | } |
---|
| 578 | |
---|
| 579 | // pi+n = pi-p?? |
---|
| 580 | |
---|
| 581 | if(neutron) |
---|
| 582 | { |
---|
| 583 | if(proj_momentum < 0.37) |
---|
| 584 | { |
---|
| 585 | hnXsc = 28.0 + 40*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.07/0.07); |
---|
| 586 | } |
---|
| 587 | else if(proj_momentum<0.65) |
---|
| 588 | { |
---|
| 589 | hnXsc = 26+110*(std::log(proj_momentum/0.48))*(std::log(proj_momentum/0.48)); |
---|
| 590 | } |
---|
| 591 | else if(proj_momentum<1.3) |
---|
| 592 | { |
---|
| 593 | hnXsc = 36.1+ |
---|
| 594 | 10*std::exp(-(proj_momentum-0.72)*(proj_momentum-0.72)/0.06/0.06)+ |
---|
| 595 | 24*std::exp(-(proj_momentum-1.015)*(proj_momentum-1.015)/0.075/0.075); |
---|
| 596 | } |
---|
| 597 | else if(proj_momentum<3.0) |
---|
| 598 | { |
---|
| 599 | hnXsc = 36.1+0.079-4.313*std::log(proj_momentum)+ |
---|
| 600 | 3*std::exp(-(proj_momentum-2.1)*(proj_momentum-2.1)/0.4/0.4)+ |
---|
| 601 | 1.5*std::exp(-(proj_momentum-1.4)*(proj_momentum-1.4)/0.12/0.12); |
---|
| 602 | } |
---|
| 603 | else // mb |
---|
| 604 | { |
---|
| 605 | hnXsc = 10.6+2*std::log(proj_energy)+30*std::pow(proj_energy,-0.43); |
---|
| 606 | } |
---|
| 607 | fTotalXsc = hnXsc; |
---|
| 608 | } |
---|
| 609 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
| 610 | } |
---|
| 611 | else if(theParticle == thePiMinus && pORn) |
---|
| 612 | { |
---|
| 613 | // pi-n = pi+p?? |
---|
| 614 | |
---|
| 615 | if(neutron) |
---|
| 616 | { |
---|
| 617 | if(proj_momentum < 0.4) |
---|
| 618 | { |
---|
| 619 | G4double Ex3 = 180*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.085/0.085); |
---|
| 620 | hnXsc = Ex3+20.0; |
---|
| 621 | } |
---|
| 622 | else if(proj_momentum < 1.15) |
---|
| 623 | { |
---|
| 624 | G4double Ex4 = 88*(std::log(proj_momentum/0.75))*(std::log(proj_momentum/0.75)); |
---|
| 625 | hnXsc = Ex4+14.0; |
---|
| 626 | } |
---|
| 627 | else if(proj_momentum < 3.5) |
---|
| 628 | { |
---|
| 629 | G4double Ex1 = 3.2*std::exp(-(proj_momentum-2.55)*(proj_momentum-2.55)/0.55/0.55); |
---|
| 630 | G4double Ex2 = 12*std::exp(-(proj_momentum-1.47)*(proj_momentum-1.47)/0.225/0.225); |
---|
| 631 | hnXsc = Ex1+Ex2+27.5; |
---|
| 632 | } |
---|
| 633 | else // if(proj_momentum > 3.5) // mb |
---|
| 634 | { |
---|
| 635 | hnXsc = 10.6+2.*std::log(proj_energy)+25*std::pow(proj_energy,-0.43); |
---|
| 636 | } |
---|
| 637 | fTotalXsc = hnXsc; |
---|
| 638 | } |
---|
| 639 | // pi-p |
---|
| 640 | |
---|
| 641 | if(proton) |
---|
| 642 | { |
---|
| 643 | if(proj_momentum < 0.37) |
---|
| 644 | { |
---|
| 645 | hpXsc = 28.0 + 40*std::exp(-(proj_momentum-0.29)*(proj_momentum-0.29)/0.07/0.07); |
---|
| 646 | } |
---|
| 647 | else if(proj_momentum<0.65) |
---|
| 648 | { |
---|
| 649 | hpXsc = 26+110*(std::log(proj_momentum/0.48))*(std::log(proj_momentum/0.48)); |
---|
| 650 | } |
---|
| 651 | else if(proj_momentum<1.3) |
---|
| 652 | { |
---|
| 653 | hpXsc = 36.1+ |
---|
| 654 | 10*std::exp(-(proj_momentum-0.72)*(proj_momentum-0.72)/0.06/0.06)+ |
---|
| 655 | 24*std::exp(-(proj_momentum-1.015)*(proj_momentum-1.015)/0.075/0.075); |
---|
| 656 | } |
---|
| 657 | else if(proj_momentum<3.0) |
---|
| 658 | { |
---|
| 659 | hpXsc = 36.1+0.079-4.313*std::log(proj_momentum)+ |
---|
| 660 | 3*std::exp(-(proj_momentum-2.1)*(proj_momentum-2.1)/0.4/0.4)+ |
---|
| 661 | 1.5*std::exp(-(proj_momentum-1.4)*(proj_momentum-1.4)/0.12/0.12); |
---|
| 662 | } |
---|
| 663 | else // mb |
---|
| 664 | { |
---|
| 665 | hpXsc = 10.6+2*std::log(proj_energy)+30*std::pow(proj_energy,-0.43); |
---|
| 666 | } |
---|
| 667 | fTotalXsc = hpXsc; |
---|
| 668 | } |
---|
| 669 | // xsection = hpXsc*Zt + hnXsc*Nt; |
---|
| 670 | } |
---|
| 671 | else if(theParticle == theKPlus && pORn) |
---|
| 672 | { |
---|
| 673 | if(proton) |
---|
| 674 | { |
---|
| 675 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 676 | + 7.14*std::pow(sMand,-eta1) - 13.45*std::pow(sMand,-eta2)); |
---|
| 677 | } |
---|
| 678 | if(neutron) |
---|
| 679 | { |
---|
| 680 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 681 | + 5.17*std::pow(sMand,-eta1) - 7.23*std::pow(sMand,-eta2)); |
---|
| 682 | } |
---|
| 683 | fTotalXsc = xsection; |
---|
| 684 | } |
---|
| 685 | else if(theParticle == theKMinus && pORn) |
---|
| 686 | { |
---|
| 687 | if(proton) |
---|
| 688 | { |
---|
| 689 | xsection = Zt*( 17.91 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 690 | + 7.14*std::pow(sMand,-eta1) + 13.45*std::pow(sMand,-eta2)); |
---|
| 691 | } |
---|
| 692 | if(neutron) |
---|
| 693 | { |
---|
| 694 | xsection = Nt*( 17.87 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 695 | + 5.17*std::pow(sMand,-eta1) + 7.23*std::pow(sMand,-eta2)); |
---|
| 696 | } |
---|
| 697 | fTotalXsc = xsection; |
---|
| 698 | } |
---|
| 699 | else if(theParticle == theSMinus && pORn) |
---|
| 700 | { |
---|
| 701 | xsection = At*( 35.20 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 702 | - 199.*std::pow(sMand,-eta1) + 264.*std::pow(sMand,-eta2)); |
---|
| 703 | } |
---|
| 704 | else if(theParticle == theGamma && pORn) // modify later on |
---|
| 705 | { |
---|
| 706 | xsection = At*( 0.0 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 707 | + 0.032*std::pow(sMand,-eta1) - 0.0*std::pow(sMand,-eta2)); |
---|
| 708 | fTotalXsc = xsection; |
---|
| 709 | } |
---|
| 710 | else // as proton ??? |
---|
| 711 | { |
---|
| 712 | if(proton) |
---|
| 713 | { |
---|
| 714 | xsection = Zt*( 35.45 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 715 | + 42.53*std::pow(sMand,-eta1) - 33.34*std::pow(sMand,-eta2)); |
---|
| 716 | } |
---|
| 717 | if(neutron) |
---|
| 718 | { |
---|
| 719 | xsection += Nt*( 35.80 + B*std::pow(std::log(sMand/s0),2.) |
---|
| 720 | + 40.15*std::pow(sMand,-eta1) - 30.*std::pow(sMand,-eta2)); |
---|
| 721 | } |
---|
| 722 | fTotalXsc = xsection; |
---|
| 723 | } |
---|
| 724 | fTotalXsc *= millibarn; // parametrised in mb |
---|
| 725 | // xsection *= millibarn; // parametrised in mb |
---|
| 726 | |
---|
| 727 | fInelasticXsc = 0.83*fTotalXsc; |
---|
| 728 | fElasticXsc = fTotalXsc - fInelasticXsc; |
---|
| 729 | if (fElasticXsc < 0.)fElasticXsc = 0.; |
---|
| 730 | |
---|
| 731 | return fTotalXsc; |
---|
| 732 | } |
---|
| 733 | |
---|
| 734 | ///////////////////////////////////////////////////////////////////////////////////// |
---|
| 735 | // |
---|
| 736 | // Returns hadron-nucleon cross-section based on V. Uzjinsky parametrisation of |
---|
| 737 | // data from G4FTFCrossSection class |
---|
| 738 | |
---|
| 739 | G4double |
---|
| 740 | G4HadronNucleonXsc::GetHadronNucleonXscVU(const G4DynamicParticle* aParticle, |
---|
| 741 | const G4ParticleDefinition* nucleon ) |
---|
| 742 | { |
---|
| 743 | G4int PDGcode = aParticle->GetDefinition()->GetPDGEncoding(); |
---|
| 744 | G4int absPDGcode = std::abs(PDGcode); |
---|
| 745 | G4double Elab = aParticle->GetTotalEnergy(); |
---|
| 746 | // (s - 2*0.88*GeV*GeV)/(2*0.939*GeV)/GeV; |
---|
| 747 | G4double Plab = aParticle->GetMomentum().mag(); |
---|
| 748 | // std::sqrt(Elab * Elab - 0.88); |
---|
| 749 | |
---|
| 750 | Elab /= GeV; |
---|
| 751 | Plab /= GeV; |
---|
| 752 | |
---|
| 753 | G4double LogPlab = std::log( Plab ); |
---|
| 754 | G4double sqrLogPlab = LogPlab * LogPlab; |
---|
| 755 | |
---|
| 756 | G4bool pORn = (nucleon == theProton || nucleon == theNeutron ); |
---|
| 757 | G4bool proton = (nucleon == theProton); |
---|
| 758 | G4bool neutron = (nucleon == theNeutron); |
---|
| 759 | |
---|
| 760 | |
---|
| 761 | |
---|
| 762 | |
---|
| 763 | if( absPDGcode > 1000 && pORn ) //------Projectile is baryon - |
---|
| 764 | { |
---|
| 765 | if(proton) |
---|
| 766 | { |
---|
| 767 | fTotalXsc = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; |
---|
| 768 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
| 769 | } |
---|
| 770 | if(neutron) |
---|
| 771 | { |
---|
| 772 | fTotalXsc = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; |
---|
| 773 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
| 774 | } |
---|
| 775 | } |
---|
| 776 | else if( PDGcode == 211 && pORn ) //------Projectile is PionPlus ---- |
---|
| 777 | { |
---|
| 778 | if(proton) |
---|
| 779 | { |
---|
| 780 | fTotalXsc = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; |
---|
| 781 | fElasticXsc = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; |
---|
| 782 | } |
---|
| 783 | if(neutron) |
---|
| 784 | { |
---|
| 785 | fTotalXsc = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; |
---|
| 786 | fElasticXsc = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; |
---|
| 787 | } |
---|
| 788 | } |
---|
| 789 | else if( PDGcode == -211 && pORn ) //------Projectile is PionMinus ---- |
---|
| 790 | { |
---|
| 791 | if(proton) |
---|
| 792 | { |
---|
| 793 | fTotalXsc = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; |
---|
| 794 | fElasticXsc = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; |
---|
| 795 | } |
---|
| 796 | if(neutron) |
---|
| 797 | { |
---|
| 798 | fTotalXsc = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; |
---|
| 799 | fElasticXsc = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; |
---|
| 800 | } |
---|
| 801 | } |
---|
| 802 | else if( PDGcode == 111 && pORn ) //------Projectile is PionZero -- |
---|
| 803 | { |
---|
| 804 | if(proton) |
---|
| 805 | { |
---|
| 806 | fTotalXsc = (16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab + //Pi+ |
---|
| 807 | 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab)/2; //Pi- |
---|
| 808 | |
---|
| 809 | fElasticXsc = ( 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab + //Pi+ |
---|
| 810 | 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
---|
| 811 | |
---|
| 812 | } |
---|
| 813 | if(neutron) |
---|
| 814 | { |
---|
| 815 | fTotalXsc = (33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab + //Pi+ |
---|
| 816 | 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
---|
| 817 | fElasticXsc = ( 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab + //Pi+ |
---|
| 818 | 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- |
---|
| 819 | } |
---|
| 820 | } |
---|
| 821 | else if( PDGcode == 321 && pORn ) //------Projectile is KaonPlus -- |
---|
| 822 | { |
---|
| 823 | if(proton) |
---|
| 824 | { |
---|
| 825 | fTotalXsc = 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab; |
---|
| 826 | fElasticXsc = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab; |
---|
| 827 | } |
---|
| 828 | if(neutron) |
---|
| 829 | { |
---|
| 830 | fTotalXsc = 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab; |
---|
| 831 | fElasticXsc = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab; |
---|
| 832 | } |
---|
| 833 | } |
---|
| 834 | else if( PDGcode ==-321 && pORn ) //------Projectile is KaonMinus ---- |
---|
| 835 | { |
---|
| 836 | if(proton) |
---|
| 837 | { |
---|
| 838 | fTotalXsc = 32.1 + 0. *std::pow(Plab, 0. ) + 0.66*sqrLogPlab - 5.6*LogPlab; |
---|
| 839 | fElasticXsc = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29*sqrLogPlab - 2.4*LogPlab; |
---|
| 840 | } |
---|
| 841 | if(neutron) |
---|
| 842 | { |
---|
| 843 | fTotalXsc = 25.2 + 0. *std::pow(Plab, 0. ) + 0.38*sqrLogPlab - 2.9*LogPlab; |
---|
| 844 | fElasticXsc = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16*sqrLogPlab - 1.3*LogPlab; |
---|
| 845 | } |
---|
| 846 | } |
---|
| 847 | else if( PDGcode == 311 && pORn ) //------Projectile is KaonZero ----- |
---|
| 848 | { |
---|
| 849 | if(proton) |
---|
| 850 | { |
---|
| 851 | fTotalXsc = ( 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab + //K+ |
---|
| 852 | 32.1 + 0. *std::pow(Plab, 0. ) + 0.66 *sqrLogPlab - 5.6 *LogPlab)/2; //K- |
---|
| 853 | fElasticXsc = ( 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab + //K+ |
---|
| 854 | 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab)/2; //K- |
---|
| 855 | } |
---|
| 856 | if(neutron) |
---|
| 857 | { |
---|
| 858 | fTotalXsc = ( 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab + //K+ |
---|
| 859 | 25.2 + 0. *std::pow(Plab, 0. ) + 0.38 *sqrLogPlab - 2.9 *LogPlab)/2; //K- |
---|
| 860 | fElasticXsc = ( 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab + //K+ |
---|
| 861 | 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab)/2; //K- |
---|
| 862 | } |
---|
| 863 | } |
---|
| 864 | else //------Projectile is undefined, Nucleon assumed |
---|
| 865 | { |
---|
| 866 | if(proton) |
---|
| 867 | { |
---|
| 868 | fTotalXsc = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; |
---|
| 869 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
| 870 | } |
---|
| 871 | if(neutron) |
---|
| 872 | { |
---|
| 873 | fTotalXsc = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; |
---|
| 874 | fElasticXsc = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; |
---|
| 875 | } |
---|
| 876 | } |
---|
| 877 | fTotalXsc *= millibarn; |
---|
| 878 | fElasticXsc *= millibarn; |
---|
| 879 | fInelasticXsc = fTotalXsc - fElasticXsc; |
---|
| 880 | if (fInelasticXsc < 0.) fInelasticXsc = 0.; |
---|
| 881 | |
---|
| 882 | return fTotalXsc; |
---|
| 883 | } |
---|
| 884 | |
---|
| 885 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 886 | // |
---|
| 887 | // |
---|
| 888 | |
---|
| 889 | G4double G4HadronNucleonXsc::CalculateEcmValue( const G4double mp , |
---|
| 890 | const G4double mt , |
---|
| 891 | const G4double Plab ) |
---|
| 892 | { |
---|
| 893 | G4double Elab = std::sqrt ( mp * mp + Plab * Plab ); |
---|
| 894 | G4double Ecm = std::sqrt ( mp * mp + mt * mt + 2 * Elab * mt ); |
---|
| 895 | // G4double Pcm = Plab * mt / Ecm; |
---|
| 896 | // G4double KEcm = std::sqrt ( Pcm * Pcm + mp * mp ) - mp; |
---|
| 897 | |
---|
| 898 | return Ecm ; // KEcm; |
---|
| 899 | } |
---|
| 900 | |
---|
| 901 | |
---|
| 902 | //////////////////////////////////////////////////////////////////////////////////// |
---|
| 903 | // |
---|
| 904 | // |
---|
| 905 | |
---|
| 906 | G4double G4HadronNucleonXsc::CalcMandelstamS( const G4double mp , |
---|
| 907 | const G4double mt , |
---|
| 908 | const G4double Plab ) |
---|
| 909 | { |
---|
| 910 | G4double Elab = std::sqrt ( mp * mp + Plab * Plab ); |
---|
| 911 | G4double sMand = mp*mp + mt*mt + 2*Elab*mt ; |
---|
| 912 | |
---|
| 913 | return sMand; |
---|
| 914 | } |
---|
| 915 | |
---|
| 916 | |
---|
| 917 | // |
---|
| 918 | // |
---|
| 919 | /////////////////////////////////////////////////////////////////////////////////////// |
---|