ClassImp(AliGenHIJINGparaBa)
-static Double_t ptpi(Double_t *px, Double_t *)
+static Double_t ptpi(const Double_t *px, const Double_t *)
{
//
// PT-PARAMETERIZATION CDF, PRL 61(88) 1819
{
// eta-distribution
//____________________________________________________________
- const Float_t p0 = 1.10343e+02;
- const Float_t p1 = 1.73247e+01;
- const Float_t p2 = -7.23808e+00;
- const Float_t p3 = 4.48334e-01;
- const Double_t y = TMath::Abs(*py);
+ const Float_t kp0 = 1.10343e+02;
+ const Float_t kp1 = 1.73247e+01;
+ const Float_t kp2 = -7.23808e+00;
+ const Float_t kp3 = 4.48334e-01;
+ const Double_t ky = TMath::Abs(*py);
//
- return (p0+p1*y+p2*y*y+p3*y*y*y)/20.;
+ return (kp0+kp1*ky+kp2*ky*ky+kp3*ky*ky*ky)/20.;
}
AliGenHIJINGparaBa::AliGenHIJINGparaBa()
- :AliGenHIJINGpara()
+ :AliGenHIJINGpara(),
+ fPtba(0),
+ fETAba(0)
{
//
// Default constructor
//
fName="HIGINGparaBa";
fTitle="HIJING Parametrisation Particle Generator with Baryons";
- fETAba = 0;
- fPtba = 0;
}
//_____________________________________________________________________________
AliGenHIJINGparaBa::AliGenHIJINGparaBa(Int_t npart)
- :AliGenHIJINGpara(npart)
+ :AliGenHIJINGpara(npart),
+ fPtba(0),
+ fETAba(0)
{
//
// Standard constructor
//
fName="HIGINGparaBa";
fTitle="HIJING Parametrisation Particle Generator with Baryons";
- fETAba = 0;
- fPtba = 0;
}
//_____________________________________________________________________________
fETAkac = new TF1("etakac",&etakac,etaMin,etaMax,0);
fETAba = new TF1("etabaryon",&etabaryon,etaMin,etaMax,0);
- TF1 *etaPic0 = new TF1("etapic",&etapic, -7, 7, 0);
- TF1 *etaKac0 = new TF1("etakac",&etakac, -7, 7, 0);
- TF1 *etaBar0 = new TF1("etabar",&etabaryon, -7, 7, 0);
+ TF1 etaPic0("etapic(-7,7)",&etapic, -7, 7, 0);
+ TF1 etaKac0("etakac(-7,7)",&etakac, -7, 7, 0);
+ TF1 etaBar0("etabar(-7,7)",&etabaryon, -7, 7, 0);
- TF1 *ptPic0 = new TF1("ptpi", &ptpi, 0., 15., 0);
- TF1 *ptKac0 = new TF1("ptka", &ptka, 0., 15., 0);
- TF1 *ptBar0 = new TF1("ptbar", &ptbaryon, 0., 15., 0);
+ TF1 ptPic0("ptpi(0,15)", &ptpi, 0., 15., 0);
+ TF1 ptKac0("ptka(0,15)", &ptka, 0., 15., 0);
+ TF1 ptBar0("ptbar(0,15)", &ptbaryon, 0., 15., 0);
- Float_t intETApi = etaPic0->Integral(-0.5, 0.5);
- Float_t intETAka = etaKac0->Integral(-0.5, 0.5);
- Float_t intETAba = etaBar0->Integral(-0.5, 0.5);
+ Float_t intETApi = etaPic0.Integral(-0.5, 0.5);
+ Float_t intETAka = etaKac0.Integral(-0.5, 0.5);
+ Float_t intETAba = etaBar0.Integral(-0.5, 0.5);
Float_t scalePi = 6979./(intETApi/1.5);
Float_t scaleKa = 657./(intETAka/2.0);
Float_t scaleBa = 364./(intETAba/2.0);
// Fraction of events corresponding to the selected pt-range
- Float_t intPt = (0.837*ptPic0->Integral(0, 15)+
- 0.105*ptKac0->Integral(0, 15)+
- 0.058*ptBar0->Integral(0, 15));
- Float_t intPtSel = (0.837*ptPic0->Integral(fPtMin, fPtMax)+
- 0.105*ptKac0->Integral(fPtMin, fPtMax)+
- 0.058*ptBar0->Integral(fPtMin, fPtMax));
+ Float_t intPt = (0.837*ptPic0.Integral(0, 15)+
+ 0.105*ptKac0.Integral(0, 15)+
+ 0.058*ptBar0.Integral(0, 15));
+ Float_t intPtSel = (0.837*ptPic0.Integral(fPtMin, fPtMax)+
+ 0.105*ptKac0.Integral(fPtMin, fPtMax)+
+ 0.058*ptBar0.Integral(fPtMin, fPtMax));
Float_t ptFrac = intPtSel/intPt;
// Fraction of events corresponding to the selected eta-range
- Float_t intETASel = (scalePi*etaPic0->Integral(etaMin, etaMax)+
- scaleKa*etaKac0->Integral(etaMin, etaMax)+
- scaleBa*etaBar0->Integral(etaMin, etaMax));
+ Float_t intETASel = (scalePi*etaPic0.Integral(etaMin, etaMax)+
+ scaleKa*etaKac0.Integral(etaMin, etaMax)+
+ scaleBa*etaBar0.Integral(etaMin, etaMax));
// Fraction of events corresponding to the selected phi-range
Float_t phiFrac = (fPhiMax-fPhiMin)/2/TMath::Pi();
const Int_t kBaryons[4] = {kProton, kProtonBar, kNeutron, kNeutronBar};
//
Float_t origin[3];
+ Float_t time;
Float_t pt, pl, ptot;
Float_t phi, theta;
Float_t p[3];
Float_t random[6];
//
for (j=0;j<3;j++) origin[j]=fOrigin[j];
+ time = fTimeOrigin;
if(fVertexSmear == kPerEvent) {
Float_t dv[3];
}
}
for (j=0; j < 3; j++) origin[j] += dv[j];
+
+ Rndm(random,2);
+ time += fOsigma[2]/TMath::Ccgs()*
+ TMath::Cos(2*random[0]*TMath::Pi())*
+ TMath::Sqrt(-2*TMath::Log(random[1]));
} // if kPerEvent
TArrayF eventVertex;
eventVertex.Set(3);
eventVertex[0] = origin[0];
eventVertex[1] = origin[1];
eventVertex[2] = origin[2];
+ Float_t eventTime = time;
for(i=0;i<fNpart;i++) {
while(1) {
origin[j]=fOrigin[j]+fOsigma[j]*TMath::Cos(2*random[2*j]*TMath::Pi())*
TMath::Sqrt(-2*TMath::Log(random[2*j+1]));
}
+
+ Rndm(random,2);
+ time = fTimeOrigin + fOsigma[2]/TMath::Ccgs()*
+ TMath::Cos(2*random[0]*TMath::Pi())*
+ TMath::Sqrt(-2*TMath::Log(random[1]));
}
- PushTrack(fTrackIt,-1,part,p,origin,polar,0,kPPrimary,nt,fParentWeight);
+ PushTrack(fTrackIt,-1,part,p,origin,polar,time,kPPrimary,nt,fParentWeight);
break;
} // while(1)
} // Particle loop
AliGenEventHeader* header = new AliGenEventHeader("HIJINGparam");
// Event Vertex
header->SetPrimaryVertex(eventVertex);
+ header->SetInteractionTime(eventTime);
gAlice->SetGenEventHeader(header);
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff