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This commit is contained in:
Gabriele Cosmo
2016-06-09 16:15:05 +02:00
parent b79225fb37
commit 74cad5e589
3877 changed files with 234205 additions and 167127 deletions
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source/processes/hadronic/models/parton_string/diffraction/src/G4FTFParameters.cc
+64 -27
View File
@@ -24,12 +24,15 @@
// ********************************************************************
//
//
// $Id: G4FTFParameters.cc,v 1.4 2008/12/18 13:02:00 gunter Exp $
// GEANT4 tag $Name: geant4-09-02 $
// $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 <utility>
G4FTFParameters::G4FTFParameters()
{;}
@@ -42,17 +45,19 @@ G4FTFParameters::G4FTFParameters(const G4ParticleDefinition * particle,
G4double theA,
G4double theZ,
G4double s)
{
{
G4int PDGcode = particle->GetPDGEncoding();
G4int absPDGcode = std::abs(PDGcode);
G4double Elab = (s - 2*0.88*GeV*GeV)/(2*0.939*GeV)/GeV;
G4double Plab = std::sqrt(Elab * Elab - 0.88);
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;
//G4cout<<"G4FTFParameters Plab "<<Plab<<G4endl;
G4int NumberOfTargetProtons = (G4int) theZ;
G4int NumberOfTargetNeutrons = (G4int) theA- (G4int) theZ;
G4int NumberOfTargetNucleons = NumberOfTargetProtons + NumberOfTargetNeutrons;
@@ -143,7 +148,7 @@ G4FTFParameters::G4FTFParameters(const G4ParticleDefinition * particle,
Xelastic = ( NumberOfTargetProtons * XelKP +
NumberOfTargetNeutrons * XelKN ) / NumberOfTargetNucleons;
}
else if( PDGcode == 311 ) //------Projectile is KaonZero ------
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-
@@ -180,7 +185,7 @@ G4FTFParameters::G4FTFParameters(const G4ParticleDefinition * particle,
SetElastisCrossSection(Xelastic);
SetInelasticCrossSection(Xtotal-Xelastic);
// // Interactions with elastic ans inelastic collisions
// // Interactions with elastic and inelastic collisions
SetProbabilityOfElasticScatt(Xtotal, Xelastic);
SetRadiusOfHNinteractions2(Xtotal/pi/10.);
//
@@ -189,13 +194,9 @@ G4FTFParameters::G4FTFParameters(const G4ParticleDefinition * particle,
SetRadiusOfHNinteractions2((Xtotal-Xelastic)/pi/10.);
*/ //=======================================================
//G4cout<<" Rnn "<<Xtotal/pi/10.<<" "<<Xtotal/pi/10.*fermi*fermi<<G4endl;
//G4cout<<"G4FTFParameters Xt Xel MeV "<<Xtotal<<" "<<Xelastic<<" "<<GeV<<G4endl;
//-----------------------------------------------------------------------------------
SetSlope( Xtotal*Xtotal/16./pi/Xelastic/0.3894 ); // Slope parameter of elastic scattering
// (GeV/c)^(-2))
//G4cout<<"G4FTFParameters Slope "<<GetSlope()<<G4endl;
//-----------------------------------------------------------------------------------
SetGamma0( GetSlope()*Xtotal/10./2./pi );
@@ -207,36 +208,45 @@ G4FTFParameters::G4FTFParameters(const G4ParticleDefinition * particle,
//----------- 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(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel
SetProbabilityOfProjDiff(0.76*std::pow(s/GeV/GeV,-0.35));
SetTarMinDiffMass(1.1); // GeV
SetTarMinNonDiffMass(1.1); // GeV
SetProbabilityOfTarDiff(0.95*std::pow(s/GeV/GeV,-0.35)); // 40/32 X-dif/X-inel
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(0.62*std::pow(s/GeV/GeV,-0.51)); // 40/32 X-dif/X-inel
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(0.62*std::pow(s/GeV/GeV,-0.51)); // 40/32 X-dif/X-inel
/*
SetProjMinDiffMass(0.5);
SetProjMinNonDiffMass(0.3); // Uzhi 12.06.08
SetProbabilityOfProjDiff(0.05);
SetProbabilityOfTarDiff(0.05);
*/
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) //------Projectile is Kaon -----------
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
@@ -250,6 +260,10 @@ SetProbabilityOfTarDiff(0.05);
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
@@ -259,10 +273,33 @@ SetProbabilityOfTarDiff(0.05);
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);
//G4cout<<"G4FTFParameters Out"<<G4endl;
// --------- 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);
}
//**********************************************************************************************