* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.18 2002/11/07 09:13:42 morsch
-Use "Vogt" to label new distributions.
-
-Revision 1.17 2002/11/07 09:06:10 morsch
-J/Psi and Upsilon pt and y distributions from R. Vogt 2002 added.
-
-Revision 1.16 2002/10/14 14:55:35 hristov
-Merging the VirtualMC branch to the main development branch (HEAD)
-
-Revision 1.14.6.1 2002/06/10 14:57:41 hristov
-Merged with v3-08-02
-
-Revision 1.15 2002/04/17 10:11:51 morsch
-Coding Rule violations corrected.
-
-Revision 1.14 2002/02/22 17:26:43 morsch
-Eta and omega added.
-
-Revision 1.13 2001/03/27 11:01:04 morsch
-Charm pt-distribution corrected. More realistic y-distribution for pi and K.
-
-Revision 1.12 2001/03/09 13:01:41 morsch
-- enum constants for paramterisation type (particle family) moved to AliGen*lib.h
-- use AliGenGSIlib::kUpsilon, AliGenPHOSlib::kEtaPrime to access the constants
-
-Revision 1.11 2000/11/30 07:12:50 alibrary
-Introducing new Rndm and QA classes
-
-Revision 1.10 2000/06/29 21:08:27 morsch
-All paramatrisation libraries derive from the pure virtual base class AliGenLib.
-This allows to pass a pointer to a library directly to AliGenParam and avoids the
-use of function pointers in Config.C.
-
-Revision 1.9 2000/06/14 15:20:56 morsch
-Include clean-up (IH)
-
-Revision 1.8 2000/06/09 20:32:11 morsch
-All coding rule violations except RS3 corrected
-
-Revision 1.7 2000/05/02 08:12:13 morsch
-Coding rule violations corrected.
-
-Revision 1.6 1999/09/29 09:24:14 fca
-Introduction of the Copyright and cvs Log
-
-*/
+/* $Id$ */
// Library class for particle pt and y distributions used for
// muon spectrometer simulations.
ClassImp(AliGenMUONlib)
//
// Pions
-Double_t AliGenMUONlib::PtPion(Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::PtPion(const Double_t *px, const Double_t* /*dummy*/)
{
//
// PT-PARAMETERIZATION CDF, PRL 61(88) 1819
//
// y-distribution
//
-Double_t AliGenMUONlib::YPion( Double_t *py, Double_t *dummy)
+Double_t AliGenMUONlib::YPion( const Double_t *py, const Double_t */*dummy*/)
{
// Pion y
Double_t y=TMath::Abs(*py);
//
// pt-distribution
//____________________________________________________________
-Double_t AliGenMUONlib::PtKaon( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::PtKaon( const Double_t *px, const Double_t */*dummy*/)
{
// Kaon pT
return PtScal(*px,2);
// y-distribution
//____________________________________________________________
-Double_t AliGenMUONlib::YKaon( Double_t *py, Double_t *dummy)
+Double_t AliGenMUONlib::YKaon( const Double_t *py, const Double_t */*dummy*/)
{
// Kaon y
Double_t y=TMath::Abs(*py);
//
// pt-distribution
//____________________________________________________________
-Double_t AliGenMUONlib::PtJpsi( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::PtJpsi( const Double_t *px, const Double_t */*dummy*/)
{
// J/Psi pT
const Double_t kpt0 = 4.;
return x/TMath::Power(pass1,kxn);
}
-Double_t AliGenMUONlib::PtJpsiPbPb( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::PtJpsiCDFscaled( const Double_t *px, const Double_t */*dummy*/)
+{
+// J/Psi pT
+//
+// PbPb 5.5 TeV
+// scaled from CDF data at 2 TeV
+// see S.Grigoryan, PWG3 Meeting, 27th Oct 2008
+
+ const Double_t kpt0 = 5.100;
+ const Double_t kxn = 4.102;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtJpsiCDFscaledPP( const Double_t *px, const Double_t */*dummy*/)
+{
+// J/Psi pT
+//
+// pp 14 TeV
+// scaled from CDF data at 2 TeV
+
+ const Double_t kpt0 = 5.630;
+ const Double_t kxn = 4.071;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtJpsiCDFscaledPP10( const Double_t *px, const Double_t */*dummy*/)
+{
+// J/Psi pT
+//
+// pp 10 TeV
+// scaled from CDF data at 2 TeV
+
+ const Double_t kpt0 = 5.334;
+ const Double_t kxn = 4.071;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtJpsiFlat( const Double_t */*px*/, const Double_t */*dummy*/ )
+{
+ return 1.;
+}
+
+Double_t AliGenMUONlib::PtJpsiPbPb( const Double_t *px, const Double_t */*dummy*/)
{
// J/Psi pT spectrum
//
-1.83806e-01, 1.55853e-02, -7.23241e-04, 1.42105e-05
};
- Int_t j;
- Double_t y = c[j = 7];
- while (j > 0) y = y * x +c[--j];
- y = x * TMath::Exp(y);
+ Double_t y;
+ if (x < 10.) {
+ Int_t j;
+ y = c[j = 7];
+ while (j > 0) y = y * x +c[--j];
+ y = x * TMath::Exp(y);
+ } else {
+ y = 0.;
+ }
+ return y;
+}
+
+Double_t AliGenMUONlib::PtJpsiBPbPb( const Double_t *px, const Double_t */*dummy*/)
+{
+// J/Psi pT spectrum
+// B -> J/Psi X
+ Double_t x0 = 4.0384;
+ Double_t n = 3.0288;
+
+ Double_t x = px[0];
+ Double_t y = x / TMath::Power((1. + (x/x0)*(x/x0)), n);
+
return y;
}
+
+
+Double_t AliGenMUONlib::PtJpsiPP( const Double_t *px, const Double_t */*dummy*/)
+{
+// J/Psi pT spectrum
+//
+// R. Vogt 2002
+// pp 14 TeV
+// MRST HO
+// mc = 1.4 GeV, pt-kick 1 GeV
+//
+ Float_t x = px[0];
+ Float_t c[4] = {8.47471e+00, -1.93567e+00, 1.50271e-01, -5.51212e-03};
+
+ Double_t y;
+ if (x < 10.) {
+ Int_t j;
+ y = c[j = 3];
+ while (j > 0) y = y * x +c[--j];
+ y = x * TMath::Exp(y);
+ } else {
+ y = 0.;
+ }
+ return y;
+}
+
//
// y-distribution
//____________________________________________________________
-Double_t AliGenMUONlib::YJpsi(Double_t *py, Double_t *dummy)
+Double_t AliGenMUONlib::YJpsi(const Double_t *py, const Double_t */*dummy*/)
{
// J/psi y
const Double_t ky0 = 4.;
return yj;
}
+Double_t AliGenMUONlib::YJpsiFlat( const Double_t */*py*/, const Double_t */*dummy*/ )
+{
+ return 1.;
+}
+
-Double_t AliGenMUONlib::YJpsiPbPb( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YJpsiPbPb( const Double_t *px, const Double_t */*dummy*/)
{
//
return y;
}
+Double_t AliGenMUONlib::YJpsiCDFscaled( const Double_t *px, const Double_t* dummy)
+{
+ // J/Psi y
+ return AliGenMUONlib::YJpsiPbPb(px, dummy);
+}
+
+Double_t AliGenMUONlib::YJpsiCDFscaledPP( const Double_t *px, const Double_t* dummy)
+{
+ // J/Psi y
+ return AliGenMUONlib::YJpsiPP(px, dummy);
+}
+
+Double_t AliGenMUONlib::YJpsiCDFscaledPP10( const Double_t *px, const Double_t */*dummy*/)
+{
+
+//
+// J/Psi y
+//
+// pp 10 TeV
+// scaled from YJpsiPP(14 TeV) using 10 TeV / 14 TeV ratio of y-spectra in LO pQCD.
+// see S.Grigoryan, PWG3 Meeting, 27th Oct 2008
+//
+
+ Double_t c[5] = {2.46681e+01, 8.91486e+01, -3.21227e+01, 3.63075e+00, -1.32047e-01};
+
+ Double_t x = TMath::Abs(px[0]);
+ Double_t y;
+
+ if (x < 3.2) {
+ y = 98.523 - 1.3664 * x * x;
+ } else if (x < 7.5) {
+ Int_t j;
+ y = c[j = 4];
+ while (j > 0) y = y * x + c[--j];
+ } else {
+ y =0.;
+ }
+
+ if(y<0) y=0;
+
+ return y;
+}
+
+Double_t AliGenMUONlib::YJpsiPP( const Double_t *px, const Double_t */*dummy*/)
+{
+
+//
+// J/Psi y
+//
+//
+// R. Vogt 2002
+// pp 14 TeV
+// MRST HO
+// mc = 1.4 GeV, pt-kick 1 GeV
+//
+
+ Double_t c[5] = {1.38532e+00, 1.00596e+02, -3.46378e+01, 3.94172e+00, -1.48319e-01};
+ Double_t x = TMath::Abs(px[0]);
+ Double_t y;
+
+ if (x < 2.5) {
+ y = 96.455 - 0.8483 * x * x;
+ } else if (x < 7.9) {
+ Int_t j;
+ y = c[j = 4];
+ while (j > 0) y = y * x + c[--j];
+ } else {
+ y =0.;
+ }
+
+ return y;
+}
+
+Double_t AliGenMUONlib::YJpsiBPbPb( const Double_t *px, const Double_t */*dummy*/)
+{
+
+//
+// J/Psi from B->J/Psi X
+//
+//
+
+
+ Double_t c[7] = {7.37025e-02, 0., -2.94487e-03, 0., 6.07953e-06, 0., 5.39219e-07};
+
+ Double_t x = TMath::Abs(px[0]);
+ Double_t y;
+
+ if (x > 6.) {
+ y = 0.;
+ } else {
+ Int_t j;
+ y = c[j = 6];
+ while (j > 0) y = y * x + c[--j];
+ }
+
+ return y;
+}
+
+
+
// particle composition
//
Int_t AliGenMUONlib::IpJpsi(TRandom *)
// J/Psi composition
return 443;
}
+Int_t AliGenMUONlib::IpPsiP(TRandom *)
+{
+// Psi prime composition
+ return 100443;
+}
+Int_t AliGenMUONlib::IpJpsiFamily(TRandom *)
+{
+// J/Psi composition
+ Int_t ip;
+ Float_t r = gRandom->Rndm();
+ if (r < 0.98) {
+ ip = 443;
+ } else {
+ ip = 100443;
+ }
+ return ip;
+}
+
+
// Upsilon
//
//
// pt-distribution
//____________________________________________________________
-Double_t AliGenMUONlib::PtUpsilon( Double_t *px, Double_t *dummy )
+Double_t AliGenMUONlib::PtUpsilon( const Double_t *px, const Double_t */*dummy*/ )
{
// Upsilon pT
const Double_t kpt0 = 5.3;
return x/TMath::Power(pass1,kxn);
}
-Double_t AliGenMUONlib::PtUpsilonPbPb( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::PtUpsilonCDFscaled( const Double_t *px, const Double_t */*dummy*/ )
+{
+// Upsilon pT
+ const Double_t kpt0 = 7.753;
+ const Double_t kxn = 3.042;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtUpsilonCDFscaledPP( const Double_t *px, const Double_t */*dummy*/ )
+{
+// Upsilon pT
+//
+// pp 14 TeV
+//
+// scaled from CDF data at 2 TeV
+
+ const Double_t kpt0 = 8.610;
+ const Double_t kxn = 3.051;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtUpsilonCDFscaledPP10( const Double_t *px, const Double_t */*dummy*/)
+{
+// Upsilon pT
+//
+// pp 10 TeV
+//
+// scaled from CDF data at 2 TeV
+
+ const Double_t kpt0 = 8.235;
+ const Double_t kxn = 3.051;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtUpsilonFlat( const Double_t */*px*/, const Double_t */*dummy*/ )
{
+ return 1.;
+}
+Double_t AliGenMUONlib::PtUpsilonPbPb( const Double_t *px, const Double_t */*dummy*/)
+{
//
// Upsilon pT
//
-1.03488e+01, 1.28065e+01, -6.60500e+00, 1.66140e+00,
-2.34293e-01, 1.86925e-02, -7.80708e-04, 1.30610e-05
};
- Int_t j;
- Double_t y = c[j = 7];
- while (j > 0) y = y * x +c[--j];
- y = x * TMath::Exp(y);
+ Double_t y;
+ if (x < 10.) {
+ Int_t j;
+ y = c[j = 7];
+ while (j > 0) y = y * x +c[--j];
+ y = x * TMath::Exp(y);
+ } else {
+ y = 0.;
+ }
+ return y;
+}
+
+Double_t AliGenMUONlib::PtUpsilonPP( const Double_t *px, const Double_t */*dummy*/)
+{
+//
+// Upsilon pT
+//
+//
+// R. Vogt 2002
+// pp 14 TeV
+// MRST HO
+// mc = 1.4 GeV, pt-kick 1 GeV
+//
+ Float_t x = px[0];
+ Double_t c[8] = {-7.93955e+00, 1.06306e+01, -5.21392e+00, 1.19703e+00,
+ -1.45718e-01, 8.95151e-03, -2.04806e-04, -1.13053e-06};
+
+ Double_t y;
+ if (x < 10.) {
+ Int_t j;
+ y = c[j = 7];
+ while (j > 0) y = y * x +c[--j];
+ y = x * TMath::Exp(y);
+ } else {
+ y = 0.;
+ }
return y;
}
// y-distribution
//
//____________________________________________________________
-Double_t AliGenMUONlib::YUpsilon(Double_t *py, Double_t *dummy)
+Double_t AliGenMUONlib::YUpsilon(const Double_t *py, const Double_t */*dummy*/)
{
// Upsilon y
const Double_t ky0 = 3.;
}
-Double_t AliGenMUONlib::YUpsilonPbPb( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YUpsilonPbPb( const Double_t *px, const Double_t */*dummy*/)
{
//
Double_t c[7] = {3.40036e-01, -3.98882e-07, -4.48398e-03, 8.46411e-08, -6.10854e-04,
-2.99753e-09, 1.28895e-05};
-
- Double_t x = px[0];
- if (TMath::Abs(x) > 5.55) return 0.;
+ Double_t x = TMath::Abs(px[0]);
+ if (x > 5.55) return 0.;
Int_t j;
Double_t y = c[j = 6];
while (j > 0) y = y * x +c[--j];
return y;
}
-// particle composition
-//
-Int_t AliGenMUONlib::IpUpsilon(TRandom *)
+Double_t AliGenMUONlib::YUpsilonCDFscaled( const Double_t *px, const Double_t *dummy)
{
-// y composition
- return 553;
+ // Upsilon y
+ return AliGenMUONlib::YUpsilonPbPb(px, dummy);
+
}
-//
-// Phi
-//
-//
-// pt-distribution (by scaling of pion distribution)
-//____________________________________________________________
-Double_t AliGenMUONlib::PtPhi( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YUpsilonCDFscaledPP( const Double_t *px, const Double_t *dummy)
{
-// Phi pT
- return PtScal(*px,7);
+ // Upsilon y
+ return AliGenMUONlib::YUpsilonPP(px, dummy);
+
}
-// y-distribution
-Double_t AliGenMUONlib::YPhi( Double_t *px, Double_t *dummy)
+
+Double_t AliGenMUONlib::YUpsilonFlat( const Double_t */*px*/, const Double_t */*dummy*/)
{
-// Phi y
- Double_t *dum=0;
- return YJpsi(px,dum);
+ // Upsilon y
+ return 1.;
+
}
-// particle composition
-//
-Int_t AliGenMUONlib::IpPhi(TRandom *)
+
+Double_t AliGenMUONlib::YUpsilonCDFscaledPP10( const Double_t *px, const Double_t */*dummy*/)
{
-// Phi composition
- return 333;
-}
//
-// omega
+// Upsilon y
//
+// pp 10 TeV
+// scaled from YUpsilonPP(14 TeV) using 10 TeV / 14 TeV ratio of y-spectra in LO pQCD.
+// see S.Grigoryan, PWG3 Meeting, 27th Oct 2008
//
-// pt-distribution (by scaling of pion distribution)
-//____________________________________________________________
-Double_t AliGenMUONlib::PtOmega( Double_t *px, Double_t *dummy)
-{
-// Omega pT
- return PtScal(*px,5);
+ Double_t c[4] = {1.12979e+00, -2.46155e-02, -7.37561e-04, 1.58824e-05};
+ Double_t x = TMath::Abs(px[0]);
+ if (x > 6.1) return 0.;
+ Int_t j;
+ Double_t y = c[j = 3];
+ while (j > 0) y = y * x*x +c[--j];
+ return y;
}
-// y-distribution
-Double_t AliGenMUONlib::YOmega( Double_t *px, Double_t *dummy)
+
+Double_t AliGenMUONlib::YUpsilonPP( const Double_t *px, const Double_t */*dummy*/)
+{
+
+//
+// Upsilon y
+//
+//
+// R. Vogt 2002
+// p p 14. TeV
+// MRST HO
+// mc = 1.4 GeV, pt-kick 1 GeV
+//
+ Double_t c[7] = {8.91936e-01, -6.46645e-07, -1.52774e-02, 4.28677e-08, -7.01517e-04,
+ -6.20539e-10, 1.29943e-05};
+ Double_t x = TMath::Abs(px[0]);
+ if (x > 6.2) return 0.;
+ Int_t j;
+ Double_t y = c[j = 6];
+ while (j > 0) y = y * x +c[--j];
+ return y;
+}
+
+// particle composition
+//
+Int_t AliGenMUONlib::IpUpsilon(TRandom *)
+{
+// y composition
+ return 553;
+}
+Int_t AliGenMUONlib::IpUpsilonP(TRandom *)
+{
+// y composition
+ return 100553;
+}
+Int_t AliGenMUONlib::IpUpsilonPP(TRandom *)
+{
+// y composition
+ return 200553;
+}
+Int_t AliGenMUONlib::IpUpsilonFamily(TRandom *)
+{
+// y composition
+ Int_t ip;
+ Float_t r = gRandom->Rndm();
+
+ if (r < 0.712) {
+ ip = 553;
+ } else if (r < 0.896) {
+ ip = 100553;
+ } else {
+ ip = 200553;
+ }
+ return ip;
+}
+
+
+//
+// Phi
+//
+//
+// pt-distribution (by scaling of pion distribution)
+//____________________________________________________________
+Double_t AliGenMUONlib::PtPhi( const Double_t *px, const Double_t */*dummy*/)
+{
+// Phi pT
+ return PtScal(*px,7);
+}
+// y-distribution
+Double_t AliGenMUONlib::YPhi( const Double_t *px, const Double_t */*dummy*/)
+{
+// Phi y
+ Double_t *dum=0;
+ return YJpsi(px,dum);
+}
+// particle composition
+//
+Int_t AliGenMUONlib::IpPhi(TRandom *)
+{
+// Phi composition
+ return 333;
+}
+
+//
+// omega
+//
+//
+// pt-distribution (by scaling of pion distribution)
+//____________________________________________________________
+Double_t AliGenMUONlib::PtOmega( const Double_t *px, const Double_t */*dummy*/)
+{
+// Omega pT
+ return PtScal(*px,5);
+}
+// y-distribution
+Double_t AliGenMUONlib::YOmega( const Double_t *px, const Double_t */*dummy*/)
{
// Omega y
Double_t *dum=0;
return YJpsi(px,dum);
}
-// particle composition
-//
-Int_t AliGenMUONlib::IpOmega(TRandom *)
+// particle composition
+//
+Int_t AliGenMUONlib::IpOmega(TRandom *)
+{
+// Omega composition
+ return 223;
+}
+
+
+//
+// Eta
+//
+//
+// pt-distribution (by scaling of pion distribution)
+//____________________________________________________________
+Double_t AliGenMUONlib::PtEta( const Double_t *px, const Double_t */*dummy*/)
+{
+// Eta pT
+ return PtScal(*px,3);
+}
+// y-distribution
+Double_t AliGenMUONlib::YEta( const Double_t *px, const Double_t */*dummy*/)
+{
+// Eta y
+ Double_t *dum=0;
+ return YJpsi(px,dum);
+}
+// particle composition
+//
+Int_t AliGenMUONlib::IpEta(TRandom *)
+{
+// Eta composition
+ return 221;
+}
+
+//
+// Charm
+//
+//
+// pt-distribution
+//____________________________________________________________
+Double_t AliGenMUONlib::PtCharm( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+ const Double_t kpt0 = 2.25;
+ const Double_t kxn = 3.17;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtCharmCentral( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+ const Double_t kpt0 = 2.12;
+ const Double_t kxn = 2.78;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtCharmF0M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// FiMjSkPP define theoretical uncertainties around F0M0S0PP as follows:
+// PtCharmFiMjSkPP = PtCharmF0M0S0PP * (dN(i,j,k)/dpt / dN(0,0,0)/dpt)_MNR
+// i=0,1,2; j=0,1,2; k=0,1,...,6
+// dN(i,j,k)/dpt - spectra obtained by A.Dainese (hep-ph/0601164, p.88;
+// http://www-zeus.desy.de/~corradi/benchmarks) from NLO pQCD (MNR)
+// calculations for the following inputs:
+// Peterson fragmentation function (F) with \epsilon_c = 0.02, 0.002 & 0.11
+// for i=0,1 & 2 respectively; quark mass (M) of 1.5, 1.3 & 1.7 GeV
+// for j=0,1 & 2 respectively;
+// factorisation \mu_F = a*mt and renormalisation \mu_R = b*mt scales (S)
+// with a/b = 1/1, 1/0.5, 0.5/1, 0.5/0.5, 1/2, 2/1 & 2/2
+// for k = 0, 1, 2, 3, 4, 5 & 6 respectively; CTEQ6.1 PDF set
+// (PDF uncertainty not considered since is small, see hep-ph/0601164, p.89).
+// June 2008, Smbat.Grigoryan@cern.ch
+
+// Charm pT
+// Pythia6.214 (kCharmppMNRwmi, PDF = CTEQ5L, quark mass = 1.2 GeV, PtHard > 2.76 GeV/c)
+// for pp collisions at 14 TeV with one c-cbar pair per event.
+// Corresponding NLO total cross section is 5.68 mb
+
+
+ const Double_t kpt0 = 2.2930;
+ const Double_t kxn = 3.1196;
+ Double_t c[3]={-5.2180e-01,1.8753e-01,2.8669e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF1M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 6.06 mb
+ const Double_t kpt0 = 2.8669;
+ const Double_t kxn = 3.1044;
+ Double_t c[3]={-4.6714e-01,1.5005e-01,4.5003e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF2M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 6.06 mb
+ const Double_t kpt0 = 1.8361;
+ const Double_t kxn = 3.2966;
+ Double_t c[3]={-6.1550e-01,2.6498e-01,1.0728e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M1S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 7.69 mb
+ const Double_t kpt0 = 2.1280;
+ const Double_t kxn = 3.1397;
+ Double_t c[3]={-5.4021e-01,2.0944e-01,2.5211e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M2S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 4.81 mb
+ const Double_t kpt0 = 2.4579;
+ const Double_t kxn = 3.1095;
+ Double_t c[3]={-5.1497e-01,1.7532e-01,3.2429e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M0S1PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 14.09 mb
+ const Double_t kpt0 = 2.1272;
+ const Double_t kxn = 3.1904;
+ Double_t c[3]={-4.6088e-01,2.1918e-01,2.3055e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M0S2PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 1.52 mb
+ const Double_t kpt0 = 2.8159;
+ const Double_t kxn = 3.0857;
+ Double_t c[3]={-6.4691e-01,2.0289e-01,2.4922e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M0S3PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 3.67 mb
+ const Double_t kpt0 = 2.7297;
+ const Double_t kxn = 3.3019;
+ Double_t c[3]={-6.2216e-01,1.9031e-01,1.5341e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M0S4PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 3.38 mb
+ const Double_t kpt0 = 2.3894;
+ const Double_t kxn = 3.1075;
+ Double_t c[3]={-4.9742e-01,1.7032e-01,2.5994e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M0S5PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 10.37 mb
+ const Double_t kpt0 = 2.0187;
+ const Double_t kxn = 3.3011;
+ Double_t c[3]={-3.9869e-01,2.9248e-01,1.1763e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+Double_t AliGenMUONlib::PtCharmF0M0S6PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm pT
+// Corresponding NLO total cross section is 7.22 mb
+ const Double_t kpt0 = 2.1089;
+ const Double_t kxn = 3.1848;
+ Double_t c[3]={-4.6275e-01,1.8114e-01,2.1363e-02};
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn)*(1.+c[0]*x+c[1]*x*x)/(1.+c[2]*x*x);
+}
+
+// y-distribution
+Double_t AliGenMUONlib::YCharm( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y :: Carrer & Dainese : ALICE-INT-2003-019 v.3 (hep-ph/0311225)
+// Pythia tuned to reproduce the distribution given by the HVQMNR program based on NLO calculations (pQCD)
+// shadowing + kt broadening
+
+ Double_t x=px[0];
+ Double_t c[2]={-2.42985e-03,-2.31001e-04};
+ Double_t y=1+(c[0]*TMath::Power(x,2))+(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>8) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// FiMjSkPP define theoretical uncertainties around F0M0S0PP as follows:
+// YCharmFiMjSkPP = YCharmF0M0S0PP * (dN(i,j,k)/dy / dN(0,0,0)/dy)_MNR
+// i=0,1,2; j=0,1,2; k=0,1,...,6
+// dN(i,j,k)/dy - spectra obtained by A.Dainese (hep-ph/0601164, p.88;
+// http://www-zeus.desy.de/~corradi/benchmarks) from NLO pQCD (MNR)
+// calculations for the following inputs:
+// Peterson fragmentation function (F) with \epsilon_c = 0.02, 0.002 & 0.11
+// for i=0,1 & 2 respectively; quark mass (M) of 1.5, 1.3 & 1.7 GeV
+// for j=0,1 & 2 respectively;
+// factorisation \mu_F = a*mt and renormalisation \mu_R = b*mt scales (S)
+// with a/b = 1/1,1/0.5, 0.5/1, 0.5/0.5, 1/2, 2/1 & 2/2 for
+// k = 0, 1, 2, 3, 4, 5 & 6 respectively; CTEQ6.1 PDF set
+// (PDF uncertainty not considered since is small, see hep-ph/0601164, p.89).
+// June 2008, Smbat.Grigoryan@cern.ch
+
+// Charm y
+// Pythia6.214 (kCharmppMNRwmi, PDF = CTEQ5L, quark mass = 1.2 GeV, PtHard > 2.76 GeV/c)
+// for pp collisions at 14 TeV with one c-cbar pair per event.
+// Corresponding NLO total cross section is 5.68 mb
+
+ Double_t x=px[0];
+ Double_t c[2]={7.0909e-03,6.1967e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF1M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 6.06 mb
+ Double_t x=px[0];
+ Double_t c[2]={6.9707e-03,6.0971e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF2M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 6.06 mb
+ Double_t x=px[0];
+ Double_t c[2]={7.1687e-03,6.5303e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M1S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 7.69 mb
+ Double_t x=px[0];
+ Double_t c[2]={5.9090e-03,7.1854e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M2S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 4.81 mb
+ Double_t x=px[0];
+ Double_t c[2]={8.0882e-03,5.5872e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M0S1PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 14.09 mb
+ Double_t x=px[0];
+ Double_t c[2]={7.2520e-03,6.2691e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M0S2PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 1.52 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.1040e-04,1.4498e-04};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M0S3PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 3.67 mb
+ Double_t x=px[0];
+ Double_t c[2]={-3.1328e-03,1.8270e-04};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M0S4PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 3.38 mb
+ Double_t x=px[0];
+ Double_t c[2]={7.0865e-03,6.2532e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M0S5PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 10.37 mb
+ Double_t x=px[0];
+ Double_t c[2]={7.7070e-03,5.3533e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+Double_t AliGenMUONlib::YCharmF0M0S6PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Charm y
+// Corresponding NLO total cross section is 7.22 mb
+ Double_t x=px[0];
+ Double_t c[2]={7.9195e-03,5.3823e-05};
+ Double_t y=1-(c[0]*TMath::Power(x,2))-(c[1]*TMath::Power(x,4));
+ Double_t ycharm;
+
+ if (TMath::Abs(x)>9) {
+ ycharm=0.;
+ }
+ else {
+ ycharm=TMath::Power(y,3);
+ }
+
+ return ycharm;
+}
+
+
+Int_t AliGenMUONlib::IpCharm(TRandom *ran)
+{
+// Charm composition
+ Float_t random;
+ Int_t ip;
+// 411,421,431,4122
+ random = ran->Rndm();
+// Taux de production Carrer & Dainese : ALICE-INT-2003-019 v.3
+// >>>>> cf. tab 4 p 11
+
+ if (random < 0.30) {
+ ip=421;
+ } else if (random < 0.60) {
+ ip=-421;
+ } else if (random < 0.70) {
+ ip=411;
+ } else if (random < 0.80) {
+ ip=-411;
+ } else if (random < 0.86) {
+ ip=431;
+ } else if (random < 0.92) {
+ ip=-431;
+ } else if (random < 0.96) {
+ ip=4122;
+ } else {
+ ip=-4122;
+ }
+
+ return ip;
+}
+
+//
+// Beauty
+//
+//
+// pt-distribution
+//____________________________________________________________
+Double_t AliGenMUONlib::PtBeauty( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+ const Double_t kpt0 = 6.53;
+ const Double_t kxn = 3.59;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+Double_t AliGenMUONlib::PtBeautyCentral( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+ const Double_t kpt0 = 6.14;
+ const Double_t kxn = 2.93;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// FiMjSkPP define theoretical uncertainties around F0M0S0PP as follows:
+// PtBeautyFiMjSkPP = PtBeautyF0M0S0PP * (dN(i,j,k)/dpt / dN(0,0,0)/dpt)_MNR
+// i=0,1,2; j=0,1,2; k=0,1,...,6
+// dN(i,j,k)/dpt - spectra obtained by A.Dainese (hep-ph/0601164, p.88;
+// http://www-zeus.desy.de/~corradi/benchmarks) from NLO pQCD (MNR)
+// calculations for the following inputs:
+// Peterson fragmentation function (F) with \epsilon_b = 0.001, 0.0002 & 0.004
+// for i=0,1 & 2 respectively; quark mass (M) of 4.75, 4.5 & 5.0 GeV
+// for j=0,1 & 2 respectively;
+// factorisation \mu_F = a*mt and renormalisation \mu_R = b*mt scales (S)
+// with a/b = 1/1, 1/0.5, 0.5/1, 0.5/0.5, 1/2, 2/1 & 2/2 for
+// k = 0, 1, 2, 3, 4, 5 & 6 respectively; CTEQ6.1 PDF set
+// (PDF uncertainty not considered since is small, see hep-ph/0601164, p.89).
+// June 2008, Smbat.Grigoryan@cern.ch
+
+// Beauty pT
+// Pythia6.214 (kBeautyppMNRwmi, PDF = CTEQ5L, quark mass = 4.75 GeV, PtHard > 2.76 GeV/c)
+// for pp collisions at 14 TeV with one b-bbar pair per event.
+// Corresponding NLO total cross section is 0.494 mb
+
+ const Double_t kpt0 = 8.0575;
+ const Double_t kxn = 3.1921;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF1M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.445 mb
+ const Double_t kpt0 = 8.6239;
+ const Double_t kxn = 3.2911;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF2M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.445 mb
+ const Double_t kpt0 = 7.3367;
+ const Double_t kxn = 3.0692;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M1S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.518 mb
+ const Double_t kpt0 = 7.6409;
+ const Double_t kxn = 3.1364;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M2S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.384 mb
+ const Double_t kpt0 = 8.4948;
+ const Double_t kxn = 3.2546;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M0S1PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.648 mb
+ const Double_t kpt0 = 7.6631;
+ const Double_t kxn = 3.1621;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M0S2PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.294 mb
+ const Double_t kpt0 = 8.7245;
+ const Double_t kxn = 3.2213;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M0S3PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.475 mb
+ const Double_t kpt0 = 8.5296;
+ const Double_t kxn = 3.2187;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M0S4PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.324 mb
+ const Double_t kpt0 = 7.9440;
+ const Double_t kxn = 3.1614;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M0S5PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.536 mb
+ const Double_t kpt0 = 8.2408;
+ const Double_t kxn = 3.3029;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtBeautyF0M0S6PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty pT
+// Corresponding NLO total cross section is 0.420 mb
+ const Double_t kpt0 = 7.8041;
+ const Double_t kxn = 3.2094;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+// y-distribution
+Double_t AliGenMUONlib::YBeauty( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty y :: Carrer & Dainese : ALICE-INT-2003-019 v.3 (hep-ph/0311225)
+// Pythia tuned to reproduce the distribution given by the HVQMNR program based on NLO calculations (pQCD)
+// shadowing + kt broadening
+
+ Double_t x=px[0];
+ Double_t c[2]={-1.27590e-02,-2.42731e-04};
+ Double_t y=1+c[0]*TMath::Power(x,2)+c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
+}
+Double_t AliGenMUONlib::YBeautyF0M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// FiMjSkPP define theoretical uncertainties around F0M0S0PP as follows:
+// YBeautyFiMjSkPP = YBeautyF0M0S0PP * (dN(i,j,k)/dy / dN(0,0,0)/dy)_MNR
+// i=0,1,2; j=0,1,2; k=0,1,...,6
+// dN(i,j,k)/dy - spectra obtained by A.Dainese (hep-ph/0601164, p.88;
+// http://www-zeus.desy.de/~corradi/benchmarks) from NLO pQCD (MNR)
+// calculations for the following inputs:
+// Peterson fragmentation function (F) with \epsilon_b = 0.001, 0.0002 & 0.004
+// for i=0,1 & 2 respectively; quark mass (M) of 4.75, 4.5 & 5.0 GeV
+// for j=0,1 & 2 respectively;
+// factorisation \mu_F = a*mt and renormalisation \mu_R = b*mt scales (S)
+// with a/b = 1/1, 1/0.5, 0.5/1, 0.5/0.5, 1/2, 2/1 & 2/2
+// for k = 0, 1, 2, 3, 4, 5 & 6 respectively; CTEQ6.1 PDF set
+// (PDF uncertainty not considered since is small, see hep-ph/0601164, p.89).
+// June 2008, Smbat.Grigoryan@cern.ch
+
+// Beauty y
+// Pythia6.214 (kBeautyppMNRwmi, PDF = CTEQ5L, quark mass = 4.75 GeV, PtHard > 2.76 GeV/c)
+// for pp collisions at 14 TeV with one b-bbar pair per event.
+// Corresponding NLO total cross section is 0.494 mb
+
+
+ Double_t x=px[0];
+ Double_t c[2]={1.2350e-02,9.2667e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
+}
+Double_t AliGenMUONlib::YBeautyF1M0S0PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty y
+// Corresponding NLO total cross section is 0.445 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.2292e-02,9.1847e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
+}
+Double_t AliGenMUONlib::YBeautyF2M0S0PP( const Double_t *px, const Double_t */*dummy*/)
{
-// Omega composition
- return 223;
+// Beauty y
+// Corresponding NLO total cross section is 0.445 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.2436e-02,9.3709e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
-
-
-//
-// Eta
-//
-//
-// pt-distribution (by scaling of pion distribution)
-//____________________________________________________________
-Double_t AliGenMUONlib::PtEta( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YBeautyF0M1S0PP( const Double_t *px, const Double_t */*dummy*/)
{
-// Eta pT
- return PtScal(*px,3);
+// Beauty y
+// Corresponding NLO total cross section is 0.518 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.1714e-02,1.0068e-04};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
-// y-distribution
-Double_t AliGenMUONlib::YEta( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YBeautyF0M2S0PP( const Double_t *px, const Double_t */*dummy*/)
{
-// Eta y
- Double_t *dum=0;
- return YJpsi(px,dum);
+// Beauty y
+// Corresponding NLO total cross section is 0.384 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.2944e-02,8.5500e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
-// particle composition
-//
-Int_t AliGenMUONlib::IpEta(TRandom *)
+Double_t AliGenMUONlib::YBeautyF0M0S1PP( const Double_t *px, const Double_t */*dummy*/)
{
-// Eta composition
- return 221;
+// Beauty y
+// Corresponding NLO total cross section is 0.648 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.2455e-02,9.2713e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
-
-//
-// Charm
-//
-//
-// pt-distribution
-//____________________________________________________________
-Double_t AliGenMUONlib::PtCharm( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YBeautyF0M0S2PP( const Double_t *px, const Double_t */*dummy*/)
{
-// Charm pT
- const Double_t kpt0 = 4.08;
- const Double_t kxn = 9.40;
-
- Double_t x=*px;
- //
- Double_t pass1 = 1.+(x/kpt0);
- return x/TMath::Power(pass1,kxn);
+// Beauty y
+// Corresponding NLO total cross section is 0.294 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.0897e-02,1.1878e-04};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
-// y-distribution
-Double_t AliGenMUONlib::YCharm( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YBeautyF0M0S3PP( const Double_t *px, const Double_t */*dummy*/)
{
-// Charm y
- Double_t *dum=0;
- return YJpsi(px,dum);
+// Beauty y
+// Corresponding NLO total cross section is 0.475 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.0912e-02,1.1858e-04};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
-
-Int_t AliGenMUONlib::IpCharm(TRandom *ran)
-{
-// Charm composition
- Float_t random;
- Int_t ip;
-// 411,421,431,4122
- random = ran->Rndm();
- if (random < 0.5) {
- ip=411;
- } else if (random < 0.75) {
- ip=421;
- } else if (random < 0.90) {
- ip=431;
- } else {
- ip=4122;
+Double_t AliGenMUONlib::YBeautyF0M0S4PP( const Double_t *px, const Double_t */*dummy*/)
+{
+// Beauty y
+// Corresponding NLO total cross section is 0.324 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.2378e-02,9.2490e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
}
- if (ran->Rndm() < 0.5) {ip=-ip;}
- return ip;
+ return ybeauty;
}
-
-
-//
-// Beauty
-//
-//
-// pt-distribution
-//____________________________________________________________
-Double_t AliGenMUONlib::PtBeauty( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YBeautyF0M0S5PP( const Double_t *px, const Double_t */*dummy*/)
{
-// Beauty pT
- const Double_t kpt0 = 4.;
- const Double_t kxn = 3.6;
- Double_t x=*px;
- //
- Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
- return x/TMath::Power(pass1,kxn);
+// Beauty y
+// Corresponding NLO total cross section is 0.536 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.2886e-02,8.2912e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
-// y-distribution
-Double_t AliGenMUONlib::YBeauty( Double_t *px, Double_t *dummy)
+Double_t AliGenMUONlib::YBeautyF0M0S6PP( const Double_t *px, const Double_t */*dummy*/)
{
// Beauty y
- Double_t *dum=0;
- return YJpsi(px,dum);
+// Corresponding NLO total cross section is 0.420 mb
+ Double_t x=px[0];
+ Double_t c[2]={1.3106e-02,8.0115e-05};
+ Double_t y=1-c[0]*TMath::Power(x,2)-c[1]*TMath::Power(x,4);
+ Double_t ybeauty;
+
+ if (TMath::Abs(x)>7.6) {
+ ybeauty=0.;
+ }
+ else {
+ ybeauty=TMath::Power(y,3);
+ }
+
+ return ybeauty;
}
Int_t AliGenMUONlib::IpBeauty(TRandom *ran)
// Beauty Composition
Float_t random;
Int_t ip;
- random = ran->Rndm();
- if (random < 0.5) {
- ip=511;
- } else if (random < 0.75) {
- ip=521;
- } else if (random < 0.90) {
- ip=531;
+ random = ran->Rndm();
+
+// Taux de production Carrer & Dainese : ALICE-INT-2003-019 v.3
+// >>>>> cf. tab 4 p 11
+
+ if (random < 0.20) {
+ ip=511;
+ } else if (random < 0.40) {
+ ip=-511;
+ } else if (random < 0.605) {
+ ip=521;
+ } else if (random < 0.81) {
+ ip=-521;
+ } else if (random < 0.87) {
+ ip=531;
+ } else if (random < 0.93) {
+ ip=-531;
+ } else if (random < 0.965) {
+ ip=5122;
} else {
- ip=5122;
+ ip=-5122;
}
- if (ran->Rndm() < 0.5) {ip=-ip;}
- return ip;
+ return ip;
}
-typedef Double_t (*GenFunc) (Double_t*, Double_t*);
+
+typedef Double_t (*GenFunc) (const Double_t*, const Double_t*);
GenFunc AliGenMUONlib::GetPt(Int_t param, const char* tname) const
{
// Return pointer to pT parameterisation
case kEta:
func=PtEta;
break;
+ case kJpsiFamily:
+ case kPsiP:
case kJpsi:
- if (sname == "Vogt") {
+ if (sname == "Vogt" || sname == "Vogt PbPb") {
func=PtJpsiPbPb;
+ } else if (sname == "Vogt pp") {
+ func=PtJpsiPP;
+ } else if (sname == "CDF scaled") {
+ func=PtJpsiCDFscaled;
+ } else if (sname == "CDF pp") {
+ func=PtJpsiCDFscaledPP;
+ } else if (sname == "CDF pp 10") {
+ func=PtJpsiCDFscaledPP10;
+ } else if (sname == "Flat") {
+ func=PtJpsiFlat;
} else {
func=PtJpsi;
}
break;
+ case kJpsiFromB:
+ func = PtJpsiBPbPb;
+ break;
+ case kUpsilonFamily:
+ case kUpsilonP:
+ case kUpsilonPP:
case kUpsilon:
- if (sname == "Vogt") {
+ if (sname == "Vogt" || sname == "Vogt PbPb") {
func=PtUpsilonPbPb;
+ } else if (sname == "Vogt pp") {
+ func=PtUpsilonPP;
+ } else if (sname == "CDF scaled") {
+ func=PtUpsilonCDFscaled;
+ } else if (sname == "CDF pp") {
+ func=PtUpsilonCDFscaledPP;
+ } else if (sname == "CDF pp 10") {
+ func=PtUpsilonCDFscaledPP10;
+ } else if (sname == "Flat") {
+ func=PtUpsilonFlat;
} else {
func=PtUpsilon;
}
- break;
+ break;
case kCharm:
- func=PtCharm;
+ if (sname == "F0M0S0 pp") {
+ func=PtCharmF0M0S0PP;
+ } else if (sname == "F1M0S0 pp") {
+ func=PtCharmF1M0S0PP;
+ } else if (sname == "F2M0S0 pp") {
+ func=PtCharmF2M0S0PP;
+ } else if (sname == "F0M1S0 pp") {
+ func=PtCharmF0M1S0PP;
+ } else if (sname == "F0M2S0 pp") {
+ func=PtCharmF0M2S0PP;
+ } else if (sname == "F0M0S1 pp") {
+ func=PtCharmF0M0S1PP;
+ } else if (sname == "F0M0S2 pp") {
+ func=PtCharmF0M0S2PP;
+ } else if (sname == "F0M0S3 pp") {
+ func=PtCharmF0M0S3PP;
+ } else if (sname == "F0M0S4 pp") {
+ func=PtCharmF0M0S4PP;
+ } else if (sname == "F0M0S5 pp") {
+ func=PtCharmF0M0S5PP;
+ } else if (sname == "F0M0S6 pp") {
+ func=PtCharmF0M0S6PP;
+ } else if (sname == "central") {
+ func=PtCharmCentral;
+ } else {
+ func=PtCharm;
+ }
break;
case kBeauty:
- func=PtBeauty;
+ if (sname == "F0M0S0 pp") {
+ func=PtBeautyF0M0S0PP;
+ } else if (sname == "F1M0S0 pp") {
+ func=PtBeautyF1M0S0PP;
+ } else if (sname == "F2M0S0 pp") {
+ func=PtBeautyF2M0S0PP;
+ } else if (sname == "F0M1S0 pp") {
+ func=PtBeautyF0M1S0PP;
+ } else if (sname == "F0M2S0 pp") {
+ func=PtBeautyF0M2S0PP;
+ } else if (sname == "F0M0S1 pp") {
+ func=PtBeautyF0M0S1PP;
+ } else if (sname == "F0M0S2 pp") {
+ func=PtBeautyF0M0S2PP;
+ } else if (sname == "F0M0S3 pp") {
+ func=PtBeautyF0M0S3PP;
+ } else if (sname == "F0M0S4 pp") {
+ func=PtBeautyF0M0S4PP;
+ } else if (sname == "F0M0S5 pp") {
+ func=PtBeautyF0M0S5PP;
+ } else if (sname == "F0M0S6 pp") {
+ func=PtBeautyF0M0S6PP;
+ } else if (sname == "central") {
+ func=PtBeautyCentral;
+ } else {
+ func=PtBeauty;
+ }
break;
case kPion:
func=PtPion;
case kKaon:
func=PtKaon;
break;
+ case kChic0:
+ func=PtChic0;
+ break;
+ case kChic1:
+ func=PtChic1;
+ break;
+ case kChic2:
+ func=PtChic2;
+ break;
+ case kChic:
+ func=PtChic;
+ break;
default:
func=0;
printf("<AliGenMUONlib::GetPt> unknown parametrisation\n");
GenFunc AliGenMUONlib::GetY(Int_t param, const char* tname) const
{
+ //
+ // Return pointer to y- parameterisation
+ //
TString sname = TString(tname);
-
-// Return pointer to y- parameterisation
GenFunc func;
switch (param)
{
case kOmega:
func=YOmega;
break;
+ case kJpsiFamily:
+ case kPsiP:
case kJpsi:
- if (sname == "Vogt") {
+ if (sname == "Vogt" || sname == "Vogt PbPb") {
func=YJpsiPbPb;
+ } else if (sname == "Vogt pp"){
+ func=YJpsiPP;
+ } else if (sname == "CDF scaled") {
+ func=YJpsiCDFscaled;
+ } else if (sname == "CDF pp") {
+ func=YJpsiCDFscaledPP;
+ } else if (sname == "CDF pp 10") {
+ func=YJpsiCDFscaledPP10;
+ } else if (sname == "Flat") {
+ func=YJpsiFlat;
} else {
func=YJpsi;
}
break;
+ case kJpsiFromB:
+ func = YJpsiBPbPb;
+ break;
+ case kUpsilonFamily:
+ case kUpsilonP:
+ case kUpsilonPP:
case kUpsilon:
- if (sname == "Vogt") {
+ if (sname == "Vogt" || sname == "Vogt PbPb") {
func=YUpsilonPbPb;
+ } else if (sname == "Vogt pp") {
+ func = YUpsilonPP;
+ } else if (sname == "CDF scaled") {
+ func=YUpsilonCDFscaled;
+ } else if (sname == "CDF pp") {
+ func=YUpsilonCDFscaledPP;
+ } else if (sname == "CDF pp 10") {
+ func=YUpsilonCDFscaledPP10;
+ } else if (sname == "Flat") {
+ func=YUpsilonFlat;
} else {
func=YUpsilon;
}
break;
case kCharm:
- func=YCharm;
+ if (sname == "F0M0S0 pp") {
+ func=YCharmF0M0S0PP;
+ } else if (sname == "F1M0S0 pp") {
+ func=YCharmF1M0S0PP;
+ } else if (sname == "F2M0S0 pp") {
+ func=YCharmF2M0S0PP;
+ } else if (sname == "F0M1S0 pp") {
+ func=YCharmF0M1S0PP;
+ } else if (sname == "F0M2S0 pp") {
+ func=YCharmF0M2S0PP;
+ } else if (sname == "F0M0S1 pp") {
+ func=YCharmF0M0S1PP;
+ } else if (sname == "F0M0S2 pp") {
+ func=YCharmF0M0S2PP;
+ } else if (sname == "F0M0S3 pp") {
+ func=YCharmF0M0S3PP;
+ } else if (sname == "F0M0S4 pp") {
+ func=YCharmF0M0S4PP;
+ } else if (sname == "F0M0S5 pp") {
+ func=YCharmF0M0S5PP;
+ } else if (sname == "F0M0S6 pp") {
+ func=YCharmF0M0S6PP;
+ } else {
+ func=YCharm;
+ }
break;
case kBeauty:
- func=YBeauty;
+ if (sname == "F0M0S0 pp") {
+ func=YBeautyF0M0S0PP;
+ } else if (sname == "F1M0S0 pp") {
+ func=YBeautyF1M0S0PP;
+ } else if (sname == "F2M0S0 pp") {
+ func=YBeautyF2M0S0PP;
+ } else if (sname == "F0M1S0 pp") {
+ func=YBeautyF0M1S0PP;
+ } else if (sname == "F0M2S0 pp") {
+ func=YBeautyF0M2S0PP;
+ } else if (sname == "F0M0S1 pp") {
+ func=YBeautyF0M0S1PP;
+ } else if (sname == "F0M0S2 pp") {
+ func=YBeautyF0M0S2PP;
+ } else if (sname == "F0M0S3 pp") {
+ func=YBeautyF0M0S3PP;
+ } else if (sname == "F0M0S4 pp") {
+ func=YBeautyF0M0S4PP;
+ } else if (sname == "F0M0S5 pp") {
+ func=YBeautyF0M0S5PP;
+ } else if (sname == "F0M0S6 pp") {
+ func=YBeautyF0M0S6PP;
+ } else {
+ func=YBeauty;
+ }
break;
case kPion:
func=YPion;
case kKaon:
func=YKaon;
break;
+ case kChic0:
+ func=YChic0;
+ break;
+ case kChic1:
+ func=YChic1;
+ break;
+ case kChic2:
+ func=YChic2;
+ break;
+ case kChic:
+ func=YChic;
+ break;
default:
func=0;
printf("<AliGenMUONlib::GetY> unknown parametrisation\n");
}
return func;
}
+
+//
+// Chi
+//
+//
+// pt-distribution
+//____________________________________________________________
+Double_t AliGenMUONlib::PtChic0( const Double_t *px, const Double_t */*dummy*/)
+{
+// Chi_c1 pT
+ const Double_t kpt0 = 4.;
+ const Double_t kxn = 3.6;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtChic1( const Double_t *px, const Double_t */*dummy*/)
+{
+// Chi_c1 pT
+ const Double_t kpt0 = 4.;
+ const Double_t kxn = 3.6;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtChic2( const Double_t *px, const Double_t */*dummy*/)
+{
+// Chi_c2 pT
+ const Double_t kpt0 = 4.;
+ const Double_t kxn = 3.6;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+Double_t AliGenMUONlib::PtChic( const Double_t *px, const Double_t */*dummy*/)
+{
+// Chi_c family pT
+ const Double_t kpt0 = 4.;
+ const Double_t kxn = 3.6;
+ Double_t x=*px;
+ //
+ Double_t pass1 = 1.+(x/kpt0)*(x/kpt0);
+ return x/TMath::Power(pass1,kxn);
+}
+
+//
+// y-distribution
+//____________________________________________________________
+Double_t AliGenMUONlib::YChic0(const Double_t *py, const Double_t */*dummy*/)
+{
+// Chi-1c y
+ const Double_t ky0 = 4.;
+ const Double_t kb=1.;
+ Double_t yj;
+ Double_t y=TMath::Abs(*py);
+ //
+ if (y < ky0)
+ yj=kb;
+ else
+ yj=kb*TMath::Exp(-(y-ky0)*(y-ky0)/2);
+ return yj;
+}
+
+Double_t AliGenMUONlib::YChic1(const Double_t *py, const Double_t */*dummy*/)
+{
+// Chi-1c y
+ const Double_t ky0 = 4.;
+ const Double_t kb=1.;
+ Double_t yj;
+ Double_t y=TMath::Abs(*py);
+ //
+ if (y < ky0)
+ yj=kb;
+ else
+ yj=kb*TMath::Exp(-(y-ky0)*(y-ky0)/2);
+ return yj;
+}
+
+Double_t AliGenMUONlib::YChic2(const Double_t *py, const Double_t */*dummy*/)
+{
+// Chi-2c y
+ const Double_t ky0 = 4.;
+ const Double_t kb=1.;
+ Double_t yj;
+ Double_t y=TMath::Abs(*py);
+ //
+ if (y < ky0)
+ yj=kb;
+ else
+ yj=kb*TMath::Exp(-(y-ky0)*(y-ky0)/2);
+ return yj;
+}
+
+Double_t AliGenMUONlib::YChic(const Double_t *py, const Double_t */*dummy*/)
+{
+// Chi_c family y
+ const Double_t ky0 = 4.;
+ const Double_t kb=1.;
+ Double_t yj;
+ Double_t y=TMath::Abs(*py);
+ //
+ if (y < ky0)
+ yj=kb;
+ else
+ yj=kb*TMath::Exp(-(y-ky0)*(y-ky0)/2);
+ return yj;
+}
+
+// particle composition
+//
+Int_t AliGenMUONlib::IpChic0(TRandom *)
+{
+// Chi composition
+ return 10441;
+}
+//
+Int_t AliGenMUONlib::IpChic1(TRandom *)
+{
+// Chi composition
+ return 20443;
+}
+Int_t AliGenMUONlib::IpChic2(TRandom *)
+{
+// Chi_c2 prime composition
+ return 445;
+}
+Int_t AliGenMUONlib::IpChic(TRandom *)
+{
+// Chi composition
+ Int_t ip;
+ Float_t r = gRandom->Rndm();
+ if (r < 0.001) {
+ ip = 10441;
+ } else if( r < 0.377 ) {
+ ip = 20443;
+ } else {
+ ip = 445;
+ }
+ return ip;
+}
+
+
+//_____________________________________________________________
+
typedef Int_t (*GenFuncIp) (TRandom *);
-GenFuncIp AliGenMUONlib::GetIp(Int_t param, const char* tname) const
+GenFuncIp AliGenMUONlib::GetIp(Int_t param, const char* /*tname*/) const
{
// Return pointer to particle type parameterisation
GenFuncIp func;
case kOmega:
func=IpOmega;
break;
+ case kJpsiFamily:
+ func=IpJpsiFamily;
+ break;
+ case kPsiP:
+ func=IpPsiP;
+ break;
case kJpsi:
+ case kJpsiFromB:
func=IpJpsi;
break;
case kUpsilon:
func=IpUpsilon;
break;
+ case kUpsilonFamily:
+ func=IpUpsilonFamily;
+ break;
+ case kUpsilonP:
+ func=IpUpsilonP;
+ break;
+ case kUpsilonPP:
+ func=IpUpsilonPP;
+ break;
case kCharm:
func=IpCharm;
break;
case kKaon:
func=IpKaon;
break;
+ case kChic0:
+ func=IpChic0;
+ break;
+ case kChic1:
+ func=IpChic1;
+ break;
+ case kChic2:
+ func=IpChic2;
+ break;
+ case kChic:
+ func=IpChic;
+ break;
default:
func=0;
printf("<AliGenMUONlib::GetIp> unknown parametrisation\n");
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff