// // ******************************************************************** // * License and Disclaimer * // * * // * The Geant4 software is copyright of the Copyright Holders of * // * the Geant4 Collaboration. It is provided under the terms and * // * conditions of the Geant4 Software License, included in the file * // * LICENSE and available at http://cern.ch/geant4/license . These * // * include a list of copyright holders. * // * * // * Neither the authors of this software system, nor their employing * // * institutes,nor the agencies providing financial support for this * // * work make any representation or warranty, express or implied, * // * regarding this software system or assume any liability for its * // * use. Please see the license in the file LICENSE and URL above * // * for the full disclaimer and the limitation of liability. * // * * // * This code implementation is the result of the scientific and * // * technical work of the GEANT4 collaboration. * // * By using, copying, modifying or distributing the software (or * // * any work based on the software) you agree to acknowledge its * // * use in resulting scientific publications, and indicate your * // * acceptance of all terms of the Geant4 Software license. * // ******************************************************************** // // // $Id: G4FTFParameters.cc,v 1.13 2009/12/16 17:51:15 gunter Exp $ // GEANT4 tag $Name: geant4-09-03 $ // #include "G4FTFParameters.hh" #include "G4ios.hh" #include G4FTFParameters::G4FTFParameters() {;} G4FTFParameters::~G4FTFParameters() {;} //********************************************************************************************** G4FTFParameters::G4FTFParameters(const G4ParticleDefinition * particle, G4double theA, G4double theZ, G4double s) { G4int PDGcode = particle->GetPDGEncoding(); G4int absPDGcode = std::abs(PDGcode); G4double ProjectileMass = particle->GetPDGMass(); G4double TargetMass = G4Proton::Proton()->GetPDGMass(); G4double Elab = (s - ProjectileMass*ProjectileMass - TargetMass*TargetMass)/ (2*TargetMass); G4double Plab = std::sqrt(Elab * Elab - ProjectileMass*ProjectileMass); G4double LogPlab = std::log( Plab ); G4double sqrLogPlab = LogPlab * LogPlab; G4int NumberOfTargetProtons = (G4int) theZ; G4int NumberOfTargetNeutrons = (G4int) theA- (G4int) theZ; G4int NumberOfTargetNucleons = NumberOfTargetProtons + NumberOfTargetNeutrons; G4double Xtotal, Xelastic; if( absPDGcode > 1000 ) //------Projectile is baryon -------- { G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; Xtotal = ( NumberOfTargetProtons * XtotPP + NumberOfTargetNeutrons * XtotPN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelPP + NumberOfTargetNeutrons * XelPN ) / NumberOfTargetNucleons; } else if( PDGcode == 211 ) //------Projectile is PionPlus ------- { G4double XtotPiP = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; G4double XtotPiN = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; G4double XelPiP = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; G4double XelPiN = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; Xtotal = ( NumberOfTargetProtons * XtotPiP + NumberOfTargetNeutrons * XtotPiN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelPiP + NumberOfTargetNeutrons * XelPiN ) / NumberOfTargetNucleons; } else if( PDGcode == -211 ) //------Projectile is PionMinus ------- { G4double XtotPiP = 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab; G4double XtotPiN = 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab; G4double XelPiP = 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab; G4double XelPiN = 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab; Xtotal = ( NumberOfTargetProtons * XtotPiP + NumberOfTargetNeutrons * XtotPiN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelPiP + NumberOfTargetNeutrons * XelPiN ) / NumberOfTargetNucleons; } else if( PDGcode == 111 ) //------Projectile is PionZero ------- { G4double XtotPiP =(16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab + //Pi+ 33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab)/2; //Pi- G4double XtotPiN =(33.0 + 14.0 *std::pow(Plab,-1.36) + 0.456*sqrLogPlab - 4.03*LogPlab + //Pi+ 16.4 + 19.3 *std::pow(Plab,-0.42) + 0.19 *sqrLogPlab - 0.0 *LogPlab)/2; //Pi- G4double XelPiP =( 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab + //Pi+ 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- G4double XelPiN =( 1.76 + 11.2*std::pow(Plab,-0.64) + 0.043*sqrLogPlab - 0.0 *LogPlab + //Pi+ 0.0 + 11.4*std::pow(Plab,-0.40) + 0.079*sqrLogPlab - 0.0 *LogPlab)/2; //Pi- Xtotal = ( NumberOfTargetProtons * XtotPiP + NumberOfTargetNeutrons * XtotPiN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelPiP + NumberOfTargetNeutrons * XelPiN ) / NumberOfTargetNucleons; } else if( PDGcode == 321 ) //------Projectile is KaonPlus ------- { G4double XtotKP = 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab; G4double XtotKN = 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab; G4double XelKP = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab; G4double XelKN = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab; Xtotal = ( NumberOfTargetProtons * XtotKP + NumberOfTargetNeutrons * XtotKN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelKP + NumberOfTargetNeutrons * XelKN ) / NumberOfTargetNucleons; } else if( PDGcode ==-321 ) //------Projectile is KaonMinus ------ { G4double XtotKP = 32.1 + 0. *std::pow(Plab, 0. ) + 0.66 *sqrLogPlab - 5.6 *LogPlab; G4double XtotKN = 25.2 + 0. *std::pow(Plab, 0. ) + 0.38 *sqrLogPlab - 2.9 *LogPlab; G4double XelKP = 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab; G4double XelKN = 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab; Xtotal = ( NumberOfTargetProtons * XtotKP + NumberOfTargetNeutrons * XtotKN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelKP + NumberOfTargetNeutrons * XelKN ) / NumberOfTargetNucleons; } else if((PDGcode == 311) || (PDGcode == 130) || (PDGcode == 310))//Projectile is KaonZero { G4double XtotKP =( 18.1 + 0. *std::pow(Plab, 0. ) + 0.26 *sqrLogPlab - 1.0 *LogPlab + //K+ 32.1 + 0. *std::pow(Plab, 0. ) + 0.66 *sqrLogPlab - 5.6 *LogPlab)/2; //K- G4double XtotKN =( 18.7 + 0. *std::pow(Plab, 0. ) + 0.21 *sqrLogPlab - 0.89*LogPlab + //K+ 25.2 + 0. *std::pow(Plab, 0. ) + 0.38 *sqrLogPlab - 2.9 *LogPlab)/2; //K- G4double XelKP =( 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab + //K+ 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab)/2; //K- G4double XelKN =( 7.3 + 0. *std::pow(Plab,-0. ) + 0.29 *sqrLogPlab - 2.4 *LogPlab + //K+ 5.0 + 8.1*std::pow(Plab,-1.8 ) + 0.16 *sqrLogPlab - 1.3 *LogPlab)/2; //K- Xtotal = ( NumberOfTargetProtons * XtotKP + NumberOfTargetNeutrons * XtotKN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelKP + NumberOfTargetNeutrons * XelKN ) / NumberOfTargetNucleons; } else //------Projectile is undefined, Nucleon assumed { G4double XtotPP = 48.0 + 0. *std::pow(Plab, 0. ) + 0.522*sqrLogPlab - 4.51*LogPlab; G4double XtotPN = 47.3 + 0. *std::pow(Plab, 0. ) + 0.513*sqrLogPlab - 4.27*LogPlab; G4double XelPP = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; G4double XelPN = 11.9 + 26.9*std::pow(Plab,-1.21) + 0.169*sqrLogPlab - 1.85*LogPlab; Xtotal = ( NumberOfTargetProtons * XtotPP + NumberOfTargetNeutrons * XtotPN ) / NumberOfTargetNucleons; Xelastic = ( NumberOfTargetProtons * XelPP + NumberOfTargetNeutrons * XelPN ) / NumberOfTargetNucleons; }; // Xtotal and Xelastic in mb //----------- Geometrical parameters ------------------------------------------------ SetTotalCrossSection(Xtotal); SetElastisCrossSection(Xelastic); SetInelasticCrossSection(Xtotal-Xelastic); // // Interactions with elastic and inelastic collisions SetProbabilityOfElasticScatt(Xtotal, Xelastic); SetRadiusOfHNinteractions2(Xtotal/pi/10.); // /* //==== No elastic scattering ============================ SetProbabilityOfElasticScatt(Xtotal, 0.); SetRadiusOfHNinteractions2((Xtotal-Xelastic)/pi/10.); */ //======================================================= //----------------------------------------------------------------------------------- SetSlope( Xtotal*Xtotal/16./pi/Xelastic/0.3894 ); // Slope parameter of elastic scattering // (GeV/c)^(-2)) //----------------------------------------------------------------------------------- SetGamma0( GetSlope()*Xtotal/10./2./pi ); //----------- Parameters of elastic scattering -------------------------------------- // Gaussian parametrization of // elastic scattering amplitude assumed SetAvaragePt2ofElasticScattering(1./(Xtotal*Xtotal/16./pi/Xelastic/0.3894)*GeV*GeV); //----------- Parameters of excitations --------------------------------------------- if( absPDGcode > 1000 ) //------Projectile is baryon -------- { SetMagQuarkExchange(3.4); //3.8); SetSlopeQuarkExchange(1.2); SetDeltaProbAtQuarkExchange(0.1); //(0.1*4.); SetProjMinDiffMass(1.1); // GeV SetProjMinNonDiffMass(1.1); // GeV SetProbabilityOfProjDiff(0.76*std::pow(s/GeV/GeV,-0.35)); SetTarMinDiffMass(1.1); // GeV SetTarMinNonDiffMass(1.1); // GeV SetProbabilityOfTarDiff(0.76*std::pow(s/GeV/GeV,-0.35)); SetAveragePt2(0.3); // GeV^2 } else if( absPDGcode == 211 || PDGcode == 111) //------Projectile is Pion ----------- { SetMagQuarkExchange(120.); // 210. SetSlopeQuarkExchange(2.0); SetDeltaProbAtQuarkExchange(0.6); SetProjMinDiffMass(0.5); // GeV SetProjMinNonDiffMass(0.3); // GeV SetProbabilityOfProjDiff(0.*0.62*std::pow(s/GeV/GeV,-0.51)); // 40/32 X-dif/X-inel SetTarMinDiffMass(1.1); // GeV SetTarMinNonDiffMass(1.1); // GeV SetProbabilityOfTarDiff(2.*0.62*std::pow(s/GeV/GeV,-0.51)); // 40/32 X-dif/X-inel SetAveragePt2(0.3); // GeV^2 } else if( (absPDGcode == 321) || (PDGcode == 311) || (PDGcode == 130) || (PDGcode == 310)) //Projectile is Kaon { // Must be corrected, taken from PiN SetMagQuarkExchange(120.); SetSlopeQuarkExchange(2.0); SetDeltaProbAtQuarkExchange(0.6); SetProjMinDiffMass(0.7); // GeV 1.1 SetProjMinNonDiffMass(0.7); // GeV SetProbabilityOfProjDiff(0.85*std::pow(s/GeV/GeV,-0.5)); // 40/32 X-dif/X-inel SetTarMinDiffMass(1.1); // GeV SetTarMinNonDiffMass(1.1); // GeV SetProbabilityOfTarDiff(0.85*std::pow(s/GeV/GeV,-0.5)); // 40/32 X-dif/X-inel SetAveragePt2(0.3); // GeV^2 } else //------Projectile is undefined, //------Nucleon assumed { SetMagQuarkExchange(3.5); SetSlopeQuarkExchange(1.0); SetDeltaProbAtQuarkExchange(0.1); SetProjMinDiffMass((particle->GetPDGMass()+160.*MeV)/GeV); SetProjMinNonDiffMass((particle->GetPDGMass()+160.*MeV)/GeV); SetProbabilityOfProjDiff(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel SetTarMinDiffMass(1.1); // GeV SetTarMinNonDiffMass(1.1); // GeV SetProbabilityOfTarDiff(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel SetAveragePt2(0.3); // GeV^2 } // ---------- Set parameters of a string kink ------------------------------- SetPt2Kink(6.*GeV*GeV); G4double Puubar(1./3.), Pddbar(1./3.), Pssbar(1./3.); // SU(3) symmetry // G4double Puubar(0.41 ), Pddbar(0.41 ), Pssbar(0.18 ); // Broken SU(3) symmetry SetQuarkProbabilitiesAtGluonSplitUp(Puubar, Pddbar, Pssbar); // --------- Set parameters of nuclear destruction-------------------- if( absPDGcode < 1000 ) { SetCofNuclearDestruction(1.); //1.0); // for meson projectile } else if( theA > 20. ) { SetCofNuclearDestruction(0.2); //2); // for baryon projectile and heavy target } else { SetCofNuclearDestruction(0.2); //1.0); // for baryon projectile and light target } SetR2ofNuclearDestruction(1.5*fermi*fermi); SetExcitationEnergyPerWoundedNucleon(100*MeV); SetDofNuclearDestruction(0.4); SetPt2ofNuclearDestruction(0.17*GeV*GeV); SetMaxPt2ofNuclearDestruction(1.0*GeV*GeV); } //**********************************************************************************************