1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
16 //_________________________________________________________________________
18 // Class for track selection and identification (not done now)
19 // Tracks from the CTS are kept in the AOD.
20 // Few histograms produced.
22 //-- Author: Gustavo Conesa (INFN-LNF)
23 //_________________________________________________________________________
26 // --- ROOT system ---
27 #include "TParticle.h"
30 //---- AliRoot system ----
31 #include "AliAnaChargedParticles.h"
32 #include "AliCaloTrackReader.h"
33 #include "AliAODPWG4Particle.h"
35 #include "AliFiducialCut.h"
36 #include "AliVTrack.h"
37 #include "AliAODMCParticle.h"
39 ClassImp(AliAnaChargedParticles)
41 //__________________________________________________
42 AliAnaChargedParticles::AliAnaChargedParticles() :
43 AliAnaCaloTrackCorrBaseClass(),
45 fhNtracks(0), fhPt(0),
46 fhPhiNeg(0), fhEtaNeg(0),
47 fhPhiPos(0), fhEtaPos(0),
48 fhEtaPhiPos(0), fhEtaPhiNeg(0),
50 fhPtPion(0), fhPhiPion(0), fhEtaPion(0),
51 fhPtProton(0), fhPhiProton(0), fhEtaProton(0),
52 fhPtElectron(0),fhPhiElectron(0), fhEtaElectron(0),
53 fhPtKaon(0), fhPhiKaon(0), fhEtaKaon(0),
54 fhPtUnknown(0), fhPhiUnknown(0), fhEtaUnknown(0)
58 //Initialize parameters
63 //_______________________________________________________
64 TList * AliAnaChargedParticles::GetCreateOutputObjects()
66 // Create histograms to be saved in output file and
67 // store them in fOutputContainer
70 TList * outputContainer = new TList() ;
71 outputContainer->SetName("ExampleHistos") ;
73 Int_t nptbins = GetHistogramRanges()->GetHistoPtBins(); Int_t nphibins = GetHistogramRanges()->GetHistoPhiBins(); Int_t netabins = GetHistogramRanges()->GetHistoEtaBins();
74 Float_t ptmax = GetHistogramRanges()->GetHistoPtMax(); Float_t phimax = GetHistogramRanges()->GetHistoPhiMax(); Float_t etamax = GetHistogramRanges()->GetHistoEtaMax();
75 Float_t ptmin = GetHistogramRanges()->GetHistoPtMin(); Float_t phimin = GetHistogramRanges()->GetHistoPhiMin(); Float_t etamin = GetHistogramRanges()->GetHistoEtaMin();
77 fhNtracks = new TH1F ("hNtracks","# of tracks", 1000,0,1000);
78 fhNtracks->SetXTitle("# of tracks");
79 outputContainer->Add(fhNtracks);
81 fhPt = new TH1F ("hPt","p_T distribution", nptbins,ptmin,ptmax);
82 fhPt->SetXTitle("p_{T} (GeV/c)");
83 outputContainer->Add(fhPt);
85 fhPhiNeg = new TH2F ("hPhiNegative","#phi of negative charges distribution",
86 nptbins,ptmin,ptmax, nphibins,phimin,phimax);
87 fhPhiNeg->SetYTitle("#phi (rad)");
88 fhPhiNeg->SetXTitle("p_{T} (GeV/c)");
89 outputContainer->Add(fhPhiNeg);
91 fhEtaNeg = new TH2F ("hEtaNegative","#eta of negative charges distribution",
92 nptbins,ptmin,ptmax, netabins,etamin,etamax);
93 fhEtaNeg->SetYTitle("#eta ");
94 fhEtaNeg->SetXTitle("p_{T} (GeV/c)");
95 outputContainer->Add(fhEtaNeg);
97 fhPhiPos = new TH2F ("hPhiPositive","#phi of positive charges distribution",
98 nptbins,ptmin,ptmax, nphibins,phimin,phimax);
99 fhPhiPos->SetYTitle("#phi (rad)");
100 fhPhiPos->SetXTitle("p_{T} (GeV/c)");
101 outputContainer->Add(fhPhiPos);
103 fhEtaPos = new TH2F ("hEtaPositive","#eta of positive charges distribution",
104 nptbins,ptmin,ptmax, netabins,etamin,etamax);
105 fhEtaPos->SetYTitle("#eta ");
106 fhEtaPos->SetXTitle("p_{T} (GeV/c)");
107 outputContainer->Add(fhEtaPos);
109 fhEtaPhiPos = new TH2F ("hEtaPhiPositive","pt/eta/phi of positive charge",netabins,etamin,etamax, nphibins,phimin,phimax);
110 fhEtaPhiPos->SetXTitle("#eta ");
111 fhEtaPhiPos->SetYTitle("#phi (rad)");
112 outputContainer->Add(fhEtaPhiPos);
114 fhEtaPhiNeg = new TH2F ("hEtaPhiNegative","eta vs phi of negative charge",netabins,etamin,etamax, nphibins,phimin,phimax);
115 fhEtaPhiNeg->SetXTitle("#eta ");
116 fhEtaPhiNeg->SetYTitle("#phi (rad)");
117 outputContainer->Add(fhEtaPhiNeg);
121 fhPtPion = new TH1F ("hPtMCPion","p_T distribution from #pi", nptbins,ptmin,ptmax);
122 fhPtPion->SetXTitle("p_{T} (GeV/c)");
123 outputContainer->Add(fhPtPion);
125 fhPhiPion = new TH2F ("hPhiMCPion","#phi distribution from #pi",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
126 fhPhiPion->SetXTitle("#phi (rad)");
127 outputContainer->Add(fhPhiPion);
129 fhEtaPion = new TH2F ("hEtaMCPion","#eta distribution from #pi",nptbins,ptmin,ptmax, netabins,etamin,etamax);
130 fhEtaPion->SetXTitle("#eta ");
131 outputContainer->Add(fhEtaPion);
133 fhPtProton = new TH1F ("hPtMCProton","p_T distribution from proton", nptbins,ptmin,ptmax);
134 fhPtProton->SetXTitle("p_{T} (GeV/c)");
135 outputContainer->Add(fhPtProton);
137 fhPhiProton = new TH2F ("hPhiMCProton","#phi distribution from proton",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
138 fhPhiProton->SetXTitle("#phi (rad)");
139 outputContainer->Add(fhPhiProton);
141 fhEtaProton = new TH2F ("hEtaMCProton","#eta distribution from proton",nptbins,ptmin,ptmax, netabins,etamin,etamax);
142 fhEtaProton->SetXTitle("#eta ");
143 outputContainer->Add(fhEtaProton);
145 fhPtKaon = new TH1F ("hPtMCKaon","p_T distribution from kaon", nptbins,ptmin,ptmax);
146 fhPtKaon->SetXTitle("p_{T} (GeV/c)");
147 outputContainer->Add(fhPtKaon);
149 fhPhiKaon = new TH2F ("hPhiMCKaon","#phi distribution from kaon",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
150 fhPhiKaon->SetXTitle("#phi (rad)");
151 outputContainer->Add(fhPhiKaon);
153 fhEtaKaon = new TH2F ("hEtaMCKaon","#eta distribution from kaon",nptbins,ptmin,ptmax, netabins,etamin,etamax);
154 fhEtaKaon->SetXTitle("#eta ");
155 outputContainer->Add(fhEtaKaon);
157 fhPtElectron = new TH1F ("hPtMCElectron","p_T distribution from electron", nptbins,ptmin,ptmax);
158 fhPtElectron->SetXTitle("p_{T} (GeV/c)");
159 outputContainer->Add(fhPtElectron);
161 fhPhiElectron = new TH2F ("hPhiMCElectron","#phi distribution from electron",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
162 fhPhiElectron->SetXTitle("#phi (rad)");
163 outputContainer->Add(fhPhiElectron);
165 fhEtaElectron = new TH2F ("hEtaMCElectron","#eta distribution from electron",nptbins,ptmin,ptmax, netabins,etamin,etamax);
166 fhEtaElectron->SetXTitle("#eta ");
167 outputContainer->Add(fhEtaElectron);
169 fhPtUnknown = new TH1F ("hPtMCUnknown","p_T distribution from unknown", nptbins,ptmin,ptmax);
170 fhPtUnknown->SetXTitle("p_{T} (GeV/c)");
171 outputContainer->Add(fhPtUnknown);
173 fhPhiUnknown = new TH2F ("hPhiMCUnknown","#phi distribution from unknown",nptbins,ptmin,ptmax, nphibins,phimin,phimax);
174 fhPhiUnknown->SetXTitle("#phi (rad)");
175 outputContainer->Add(fhPhiUnknown);
177 fhEtaUnknown = new TH2F ("hEtaMCUnknown","#eta distribution from unknown",nptbins,ptmin,ptmax, netabins,etamin,etamax);
178 fhEtaUnknown->SetXTitle("#eta ");
179 outputContainer->Add(fhEtaUnknown);
183 return outputContainer;
187 //___________________________________________
188 void AliAnaChargedParticles::InitParameters()
190 //Initialize the parameters of the analysis.
191 SetOutputAODClassName("AliAODPWG4Particle");
192 SetOutputAODName("PWG4Particle");
194 AddToHistogramsName("AnaCharged_");
196 fPdg = -1; //Select all tracks
200 //____________________________________________________________
201 void AliAnaChargedParticles::Print(const Option_t * opt) const
203 //Print some relevant parameters set for the analysis
207 printf("**** Print %s %s ****\n", GetName(), GetTitle() ) ;
208 AliAnaCaloTrackCorrBaseClass::Print(" ");
210 printf("Min Pt = %3.2f\n", GetMinPt());
211 printf("Max Pt = %3.2f\n", GetMaxPt());
212 printf("Select clusters with pdg %d \n",fPdg);
216 //_________________________________
217 void AliAnaChargedParticles::Init()
221 if(!GetReader()->IsCTSSwitchedOn()){
222 printf("AliAnaChargedParticles::Init() - STOP!: You want to use CTS tracks in analysis but not read!! \n!!Check the configuration file!!\n");
228 //_________________________________________________
229 void AliAnaChargedParticles::MakeAnalysisFillAOD()
231 //Do analysis and fill aods
232 if(!GetCTSTracks() || GetCTSTracks()->GetEntriesFast() == 0) return ;
234 Int_t ntracks = GetCTSTracks()->GetEntriesFast();
235 Double_t vert[3] = {0,0,0}; //vertex ;
239 printf("AliAnaChargedParticles::MakeAnalysisFillAOD() - In CTS aod entries %d\n", ntracks);
241 //Fill AODParticle with CTS aods
244 for(Int_t i = 0; i < ntracks; i++){
246 AliVTrack * track = (AliVTrack*) (GetCTSTracks()->At(i));
248 //Fill AODParticle after some selection
249 Double_t mom[3] = {track->Px(),track->Py(),track->Pz()};
250 p3.SetXYZ(mom[0],mom[1],mom[2]);
252 Bool_t in = GetFiducialCut()->IsInFiducialCut(mom,"CTS") ;
255 printf("AliAnaChargedParticles::MakeAnalysisFillAOD() - Track pt %2.2f, phi %2.2f, eta %2.2f in fiducial cut %d\n",p3.Pt(), p3.Phi(), p3.Eta(),in);
257 //Acceptance selection
258 if(IsFiducialCutOn() && ! in ) continue ;
260 // Momentum selection
261 if(p3.Pt() < GetMinPt() || p3.Pt() > GetMaxPt()) continue;
263 //Keep only particles identified with fPdg
264 //Selection not done for the moment
265 //Should be done here.
268 if (GetMixedEvent()){
269 evtIndex = GetMixedEvent()->EventIndex(track->GetID()) ;
271 GetVertex(vert,evtIndex);
272 if(TMath::Abs(vert[2])> GetZvertexCut()) return;
274 AliAODPWG4Particle tr = AliAODPWG4Particle(mom[0],mom[1],mom[2],0);
275 tr.SetDetector("CTS");
276 tr.SetLabel(track->GetLabel());
277 tr.SetTrackLabel(track->GetID(),-1);
278 tr.SetChargedBit(track->Charge()>0);
285 printf("AliAnaChargedParticles::MakeAnalysisFillAOD() - Final aod branch entries %d\n", GetOutputAODBranch()->GetEntriesFast());
288 //__________________________________________________________________
289 void AliAnaChargedParticles::MakeAnalysisFillHistograms()
291 //Do analysis and fill histograms
293 //Loop on stored AODParticles
294 Int_t naod = GetOutputAODBranch()->GetEntriesFast();
296 fhNtracks->Fill(GetReader()->GetTrackMultiplicity()) ;
299 printf("AliAnaChargedParticles::MakeAnalysisFillHistograms() - aod branch entries %d\n", naod);
301 for(Int_t iaod = 0; iaod < naod ; iaod++){
302 AliAODPWG4Particle* tr = (AliAODPWG4Particle*) (GetOutputAODBranch()->At(iaod));
304 fhPt->Fill(tr->Pt());
306 if(tr->GetChargedBit()){
307 fhPhiPos ->Fill(tr->Pt(), tr->Phi());
308 fhEtaPos ->Fill(tr->Pt(), tr->Eta());
309 fhEtaPhiPos->Fill(tr->Eta(),tr->Phi());
312 fhPhiNeg ->Fill(tr->Pt(), tr->Phi());
313 fhEtaNeg ->Fill(tr->Pt(), tr->Eta());
314 fhEtaPhiNeg->Fill(tr->Eta(),tr->Phi());
318 //Play with the MC stack if available
320 Int_t label = TMath::Abs(tr->GetLabel());
321 if(GetReader()->ReadStack()){
322 TParticle * mom = GetMCStack()->Particle(label);
323 mompdg =TMath::Abs(mom->GetPdgCode());
325 else if(GetReader()->ReadAODMCParticles()){
326 AliAODMCParticle * aodmom = 0;
327 //Get the list of MC particles
328 aodmom = (AliAODMCParticle*) (GetReader()->GetAODMCParticles(tr->GetInputFileIndex()))->At(label);
329 mompdg =TMath::Abs(aodmom->GetPdgCode());
333 fhPtPion ->Fill(tr->Pt());
334 fhPhiPion->Fill(tr->Pt(), tr->Phi());
335 fhEtaPion->Fill(tr->Pt(), tr->Eta());
337 else if(mompdg==2212){
338 fhPtProton ->Fill(tr->Pt());
339 fhPhiProton->Fill(tr->Pt(), tr->Phi());
340 fhEtaProton->Fill(tr->Pt(), tr->Eta());
342 else if(mompdg==321){
343 fhPtKaon ->Fill(tr->Pt());
344 fhPhiKaon->Fill(tr->Pt(), tr->Phi());
345 fhEtaKaon->Fill(tr->Pt(), tr->Eta());
348 fhPtElectron ->Fill(tr->Pt());
349 fhPhiElectron->Fill(tr->Pt(), tr->Phi());
350 fhEtaElectron->Fill(tr->Pt(), tr->Eta());
353 //printf("unknown pdg %d\n",mompdg);
354 fhPtUnknown ->Fill(tr->Pt());
355 fhPhiUnknown->Fill(tr->Pt(), tr->Phi());
356 fhEtaUnknown->Fill(tr->Pt(), tr->Eta());
359 }//Work with stack also