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4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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14 **************************************************************************/
16 // Author: Dariusz Miskowiec <mailto:d.miskowiec@gsi.de> 2007
18 //=============================================================================
19 // single particle analyzer
20 // Loop over tracks of one event and, for tracks that fulfill the quality
21 // and pid cuts, fill single track histograms.
22 //=============================================================================
28 #include <TParticlePDG.h>
29 #include "AliUnicorHN.h"
30 #include "AliUnicorEvent.h"
31 #include "AliUnicorAnalSingle.h"
33 ClassImp(AliUnicorAnalSingle)
35 //=============================================================================
36 AliUnicorAnalSingle::AliUnicorAnalSingle(const char *nam, Double_t emi, Double_t ema, Int_t pid) :
37 AliUnicorAnal(nam), fPid(pid), fMass(0.0)
40 // emi and ema define the rapidity range for histograms
43 TParticlePDG *part = AliUnicorAnal::fgPDG.GetParticle(fPid);
44 fMass = part? part->Mass() : 0;
46 double pi = TMath::Pi();
48 ax[0] = new TAxis(30,-1,1); ax[0]->SetTitle("vertex z");
49 ax[1] = new TAxis(80,emi,ema); ax[1]->SetTitle("eta");
50 ax[2] = new TAxis(90,-pi,pi); ax[2]->SetTitle("phi");
51 AliUnicorHN *zep = new AliUnicorHN("zep",3,ax);
52 for (int i=0; i<3; i++) delete ax[i];
54 ax[0] = new TAxis(20,0,1); ax[0]->SetTitle("centrality");
55 ax[1] = new TAxis(80,emi,ema); ax[1]->SetTitle("y");
56 ax[2] = new TAxis(80,0,2); ax[2]->SetTitle("pt (GeV)");
57 AliUnicorHN *cyp = new AliUnicorHN("cyp",3,ax);
58 for (int i=0; i<3; i++) delete ax[i];
60 ax[0] = new TAxis(10,emi,ema); ax[0]->SetTitle("eta");
61 ax[1] = new TAxis(150,0,3); ax[1]->SetTitle("p (GeV)");
62 ax[2] = new TAxis(150,0.5,3.5);ax[2]->SetTitle("sqrt(dedx (mips))");
63 AliUnicorHN *epd = new AliUnicorHN("epd",3,ax);
64 for (int i=0; i<3; i++) delete ax[i];
71 //=============================================================================
72 void AliUnicorAnalSingle::Process(AliUnicorEvent *ev)
74 // fill single particle histograms
76 AliUnicorHN *zep = (AliUnicorHN*) fHistos.At(0);
77 AliUnicorHN *cyp = (AliUnicorHN*) fHistos.At(1);
78 AliUnicorHN *epd = (AliUnicorHN*) fHistos.At(2);
79 for (int i=0; i<ev->NParticles(); i++) {
80 if (!ev->ParticleGood(i,fPid)) continue;
81 zep->Fill(ev->Zver(),ev->ParticleEta(i),ev->ParticlePhi(i),1.0);
82 double y = fMass>0? ev->ParticleY(i,fMass) : ev->ParticleEta(i);
83 cyp->Fill(ev->Centrality(),y,ev->ParticlePt(i),1.0);
84 epd->Fill(ev->ParticleEta(i),ev->ParticleP(i),sqrt(ev->ParticleDedx(i)),1.0);
87 //=============================================================================