2 /**************************************************************************
3 * Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
5 * Author: The ALICE Off-line Project. *
6 * Contributors are mentioned in the code where appropriate. *
8 * Permission to use, copy, modify and distribute this software and its *
9 * documentation strictly for non-commercial purposes is hereby granted *
10 * without fee, provided that the above copyright notice appears in all *
11 * copies and that both the copyright notice and this permission notice *
12 * appear in the supporting documentation. The authors make no claims *
13 * about the suitability of this software for any purpose. It is *
14 * provided "as is" without express or implied warranty. *
15 **************************************************************************/
18 // Task for selecting D mesons to be used as an input for D-Jet correlations
20 //-----------------------------------------------------------------------
22 // C. Bianchin (Utrecht University) chiara.bianchin@cern.ch
23 // A.Grelli (Utrecht University) a.grelli@uu.nl
24 // Xiaoming Zhang (LBNL) XMZhang@lbl.gov
25 //-----------------------------------------------------------------------
27 #include <TDatabasePDG.h>
28 #include <TParticle.h>
33 #include "AliRDHFCutsDStartoKpipi.h"
34 #include "AliRDHFCutsD0toKpi.h"
35 #include "AliAODMCHeader.h"
36 #include "AliAODHandler.h"
37 #include "AliAnalysisManager.h"
39 #include "AliAODVertex.h"
40 #include "AliAODRecoDecay.h"
41 #include "AliAODRecoCascadeHF.h"
42 #include "AliAODRecoDecayHF2Prong.h"
43 #include "AliESDtrack.h"
44 #include "AliAODMCParticle.h"
45 #include "AliAnalysisTaskSEDmesonsFilterCJ.h"
47 ClassImp(AliAnalysisTaskSEDmesonsFilterCJ)
49 //_____________________________________________________________________________
50 AliAnalysisTaskSEDmesonsFilterCJ::AliAnalysisTaskSEDmesonsFilterCJ() :
59 //fOutputCandidates(0),
67 // Default constructor
70 for (Int_t i=4; i--;) fPDGdaughters[i] = 0;
71 for (Int_t i=30; i--;) fSigmaD0[i] = 0.;
74 //_____________________________________________________________________________
75 AliAnalysisTaskSEDmesonsFilterCJ::AliAnalysisTaskSEDmesonsFilterCJ(const char *name, AliRDHFCuts *cuts, ECandidateType candtype) :
76 AliAnalysisTaskSE(name),
78 fCandidateType(candtype),
85 //fOutputCandidates(0),
93 // Constructor. Initialization of Inputs and Outputs
96 Info("AliAnalysisTaskSEDmesonsFilterCJ","Calling Constructor");
98 for (Int_t i=4; i--;) fPDGdaughters[i] = 0;
99 for (Int_t i=30; i--;) fSigmaD0[i] = 0.;
101 const Int_t nptbins = fCuts->GetNPtBins();
102 Float_t defaultSigmaD013[13] = { 0.012, 0.012, 0.012, 0.015, 0.015, 0.018, 0.018, 0.020, 0.020, 0.030, 0.030, 0.037, 0.040 };
104 switch (fCandidateType) {
106 fCandidateName = "D0";
109 fPDGdaughters[0] = 211; // pi
110 fPDGdaughters[1] = 321; // K
111 fPDGdaughters[2] = 0; // empty
112 fPDGdaughters[3] = 0; // empty
113 fBranchName = "D0toKpi";
116 fCandidateName = "Dstar";
119 fPDGdaughters[1] = 211; // pi soft
120 fPDGdaughters[0] = 421; // D0
121 fPDGdaughters[2] = 211; // pi fromD0
122 fPDGdaughters[3] = 321; // K from D0
123 fBranchName = "Dstar";
126 for (Int_t ipt=0; ipt<nptbins;ipt++) fSigmaD0[ipt] = defaultSigmaD013[ipt];
128 AliFatal(Form("Default sigma D0 not enough for %d pt bins, use SetSigmaD0ForDStar to set them",nptbins));
132 printf("%d not accepted!!\n",fCandidateType);
136 if (fCandidateType==kD0toKpi) SetMassLimits(0.15, fPDGmother);
137 if (fCandidateType==kDstartoKpipi) SetMassLimits(0.015, fPDGmother);
139 DefineOutput(1, TList::Class()); // histos
140 DefineOutput(2, AliRDHFCuts::Class()); // my cuts
143 //_____________________________________________________________________________
144 AliAnalysisTaskSEDmesonsFilterCJ::~AliAnalysisTaskSEDmesonsFilterCJ()
150 Info("~AliAnalysisTaskSEDmesonsFilterCJ","Calling Destructor");
152 if (fOutput) { delete fOutput; fOutput = 0; }
153 if (fCuts) { delete fCuts; fCuts = 0; }
154 if (fCandidateArray) { delete fCandidateArray; fCandidateArray = 0; }
155 //if (fIsSelectedArray) { delete fIsSelectedArray; fIsSelectedArray = 0; }
158 //_____________________________________________________________________________
159 void AliAnalysisTaskSEDmesonsFilterCJ::Init()
165 if(fDebug>1) printf("AnalysisTaskSEDmesonsForJetCorrelations::Init() \n");
167 switch (fCandidateType) {
169 AliRDHFCutsD0toKpi* copyfCutsDzero = new AliRDHFCutsD0toKpi(*(static_cast<AliRDHFCutsD0toKpi*>(fCuts)));
170 copyfCutsDzero->SetName("AnalysisCutsDzero");
171 PostData(2, copyfCutsDzero); // Post the data
174 AliRDHFCutsDStartoKpipi* copyfCutsDstar = new AliRDHFCutsDStartoKpipi(*(static_cast<AliRDHFCutsDStartoKpipi*>(fCuts)));
175 copyfCutsDstar->SetName("AnalysisCutsDStar");
176 PostData(2, copyfCutsDstar); // Post the cuts
184 //_____________________________________________________________________________
185 void AliAnalysisTaskSEDmesonsFilterCJ::UserCreateOutputObjects()
191 Info("UserCreateOutputObjects","CreateOutputObjects of task %s\n", GetName());
194 fOutput = new TList(); fOutput->SetOwner();
195 DefineHistoForAnalysis(); // define histograms
197 //fOutputCandidates= new TList();
198 //fOutputCandidates->SetOwner();
200 fCandidateArray = new TClonesArray("AliAODRecoDecayHF",0);
201 fCandidateArray->SetName(Form("fCandidateArray%s",fCandidateName.Data()));
203 //fOutputCandidates->Add(fCandidateArray);
204 //fIsSelectedArray = new TClonesArray("Int_t",0);
205 //fIsSelectedArray->SetName(Form("fIsSelectedArray%s",suffix.Data()));
206 //fOutputCandidates->Add(fIsSelectedArray);
208 PostData(1, fOutput);
209 //PostData(3, fOutputCandidates);
213 //_____________________________________________________________________________
214 void AliAnalysisTaskSEDmesonsFilterCJ::UserExec(Option_t *)
220 // add cadidate branch
221 fCandidateArray->Delete();
222 if (!(InputEvent()->FindListObject(Form("fCandidateArray%s",fCandidateName.Data())))) InputEvent()->AddObject(fCandidateArray);
225 AliAODEvent *aodEvent = dynamic_cast<AliAODEvent*>(fInputEvent);
227 TClonesArray *arrayDStartoD0pi = 0;
228 if (!aodEvent && AODEvent() && IsStandardAOD()) {
230 // In case there is an AOD handler writing a standard AOD, use the AOD
231 // event in memory rather than the input (ESD) event.
232 aodEvent = dynamic_cast<AliAODEvent*>(AODEvent());
234 // in this case the braches in the deltaAOD (AliAOD.VertexingHF.root)
235 // have to taken from the AOD event hold by the AliAODExtension
236 AliAODHandler *aodHandler = (AliAODHandler*)((AliAnalysisManager::GetAnalysisManager())->GetOutputEventHandler());
237 if(aodHandler->GetExtensions()) {
238 AliAODExtension *ext = (AliAODExtension*)aodHandler->GetExtensions()->FindObject("AliAOD.VertexingHF.root");
239 AliAODEvent *aodFromExt = ext->GetAOD();
240 arrayDStartoD0pi = (TClonesArray*)aodFromExt->GetList()->FindObject(fBranchName.Data());
243 arrayDStartoD0pi = (TClonesArray*)aodEvent->GetList()->FindObject(fBranchName.Data());
246 if (!arrayDStartoD0pi) {
247 AliInfo(Form("Could not find array %s, skipping the event",fBranchName.Data()));
250 AliDebug(2, Form("Found %d vertices",arrayDStartoD0pi->GetEntriesFast()));
253 TClonesArray* mcArray = 0x0;
255 mcArray = dynamic_cast<TClonesArray*>(aodEvent->FindListObject(AliAODMCParticle::StdBranchName()));
257 printf("AliAnalysisTaskSEDStarSpectra::UserExec: MC particles not found!\n");
263 TH1I* hstat = (TH1I*)fOutput->FindObject("hstat");
264 TH2F* hInvMassptD = (TH2F*)fOutput->FindObject("hInvMassptD");
267 if (fCandidateType==kDstartoKpipi) hPtPion = (TH1F*)fOutput->FindObject("hPtPion");
270 // fix for temporary bug in ESDfilter
271 // the AODs with null vertex pointer didn't pass the PhysSel
272 if(!aodEvent->GetPrimaryVertex() || TMath::Abs(aodEvent->GetMagneticField())<0.001) return;
275 Bool_t iseventselected=fCuts->IsEventSelected(aodEvent);
276 //TString firedTriggerClasses=((AliAODEvent*)aodEvent)->GetFiredTriggerClasses();
277 if (!iseventselected) return;
280 const Int_t nD = arrayDStartoD0pi->GetEntriesFast();
283 //Int_t icountReco = 0; // counters for efficiencies
285 //D* and D0 prongs needed to MatchToMC method
286 Int_t pdgDgDStartoD0pi[2] = { 421, 211 }; // D0,pi
287 Int_t pdgDgD0toKpi[2] = { 321, 211 }; // K, pi
290 Int_t pdgdaughtersD0[2] = { 211, 321 }; // pi,K
291 Int_t pdgdaughtersD0bar[2] = { 321, 211 }; // K,pi
294 Int_t isSelected = 0;
295 AliAODRecoDecayHF *charmCand = 0;
297 Int_t mcLabel = -9999;
298 Int_t pdgMeson = 413;
299 if (fCandidateType==kD0toKpi) pdgMeson = 421;
301 for (Int_t icharm=0; icharm<nD; icharm++) { //loop over D candidates
302 charmCand = (AliAODRecoDecayHF*)arrayDStartoD0pi->At(icharm); // D candidates
303 if (!charmCand) return;
306 if (fUseMCInfo) { // Look in MC, try to simulate the z
307 if (fCandidateType==kDstartoKpipi) {
308 AliAODRecoCascadeHF *temp = (AliAODRecoCascadeHF*)charmCand;
309 mcLabel = temp->MatchToMC(413,421,pdgDgDStartoD0pi,pdgDgD0toKpi,mcArray);
312 if (fCandidateType==kD0toKpi) mcLabel = charmCand->MatchToMC(421,mcArray,fNProngs,fPDGdaughters);
314 if (mcLabel<=0) continue;
317 // region of interest + cuts
318 if (!fCuts->IsInFiducialAcceptance(charmCand->Pt(),charmCand->Y(pdgMeson))) continue;
320 isSelected = fCuts->IsSelected(charmCand,AliRDHFCuts::kAll,aodEvent); //selected
321 if (!isSelected) continue;
323 new ((*fCandidateArray)[iCand]) AliAODRecoDecayHF(*charmCand);
324 // new ((*fIsSelectedArray)[iCand]) Int_t(isSelected);
328 Double_t ptD = charmCand->Pt();
329 if (fCandidateType==kDstartoKpipi) { //D*->D0pi->Kpipi
331 //softpion from D* decay
332 AliAODRecoCascadeHF *temp = (AliAODRecoCascadeHF*)charmCand;
333 AliAODTrack *track2 = (AliAODTrack*)temp->GetBachelor();
336 // select D* in the D0 window.
337 // In the cut object window is loose to allow side bands
338 Double_t mPDGD0 = TDatabasePDG::Instance()->GetParticle(421)->Mass();
340 // retrieve the corresponding pt bin for the candidate
341 // and set the expected D0 width (x3)
342 // static const Int_t n = fCuts->GetNPtBins();
343 Int_t bin = fCuts->PtBin(ptD);
344 if(bin<0 || bin>=fCuts->GetNPtBins()) {
345 AliError(Form("Pt %.3f out of bounds",ptD));
349 AliInfo(Form("Pt bin %d and sigma D0 %.4f",bin,fSigmaD0[bin]));
350 if ((temp->InvMassD0()>=(mPDGD0-3.*fSigmaD0[bin])) && (temp->InvMassD0()<=(mPDGD0+3.*fSigmaD0[bin]))) {
351 masses[0] = temp->DeltaInvMass(); //D*
352 masses[1] = 0.; //dummy for D*
355 hInvMassptD->Fill(masses[0], ptD); // 2 D slice for pt bins
357 // D* pt and soft pion pt for good candidates
358 Double_t mPDGDstar = TDatabasePDG::Instance()->GetParticle(413)->Mass();
359 Double_t invmassDelta = temp->DeltaInvMass();
360 if (TMath::Abs(invmassDelta-(mPDGDstar-mPDGD0))<0.0021) hPtPion->Fill(track2->Pt());
364 if (fCandidateType==kD0toKpi) { //D0->Kpi
367 masses[0] = charmCand->InvMass(fNProngs, (UInt_t*)pdgdaughtersD0); //D0
368 masses[1] = charmCand->InvMass(fNProngs, (UInt_t*)pdgdaughtersD0bar); //D0bar
372 if (isSelected==1 || isSelected==3) hInvMassptD->Fill(masses[0],ptD);
373 if (isSelected>=2) hInvMassptD->Fill(masses[1],ptD);
377 } // end of D cand loop
379 //AliDebug(2, Form("Found %i Reco particles that are D*!!",icountReco));
381 //PostData(1,fOutput);
382 //PostData(3,fOutputCandidates);
387 //_____________________________________________________________________________
388 void AliAnalysisTaskSEDmesonsFilterCJ::Terminate(Option_t*)
390 // The Terminate() function is the last function to be called during
391 // a query. It always runs on the client, it can be used to present
392 // the results graphically or save the results to file.
394 Info("Terminate"," terminate");
395 AliAnalysisTaskSE::Terminate();
397 fOutput = dynamic_cast<TList*>(GetOutputData(1));
399 printf("ERROR: fOutput not available\n");
406 //_____________________________________________________________________________
407 void AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits(Double_t range, Int_t pdg)
410 // AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits
413 Float_t mass = TDatabasePDG::Instance()->GetParticle(TMath::Abs(pdg))->Mass();
415 // compute the Delta mass for the D*
416 if (fCandidateType==kDstartoKpipi) mass -= TDatabasePDG::Instance()->GetParticle(421)->Mass();
417 //cout << "mass ---------------" << endl;
419 fMinMass = mass - range;
420 fMaxMass = mass + range;
422 AliInfo(Form("Setting mass limits to %f, %f",fMinMass,fMaxMass));
423 if ((fMinMass<0.) || (fMaxMass<=0.) || (fMaxMass<fMinMass)) AliFatal("Wrong mass limits!\n");
428 //_____________________________________________________________________________
429 void AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits(Double_t lowlimit, Double_t uplimit)
432 // AliAnalysisTaskSEDmesonsFilterCJ::SetMassLimits
435 if (uplimit>lowlimit) {
439 printf("Error! Lower limit larger than upper limit!\n");
440 fMinMass = uplimit - uplimit*0.2;
447 //_____________________________________________________________________________
448 Bool_t AliAnalysisTaskSEDmesonsFilterCJ::SetD0WidthForDStar(Int_t nptbins, Float_t *width)
451 // AliAnalysisTaskSEDmesonsFilterCJ::SetD0WidthForDStar
455 AliInfo("Maximum number of bins allowed is 30!");
459 if (!width) return kFALSE;
460 for (Int_t ipt=0; ipt<nptbins; ipt++) fSigmaD0[ipt]=width[ipt];
466 //_____________________________________________________________________________
467 Bool_t AliAnalysisTaskSEDmesonsFilterCJ::DefineHistoForAnalysis()
470 // AliAnalysisTaskSEDmesonsFilterCJ::DefineHistoForAnalysis
474 TH1I* hstat = new TH1I("hstat","Statistics",6,-0.5,5.5);
475 hstat->GetXaxis()->SetBinLabel(1, "N ev anal");
476 hstat->GetXaxis()->SetBinLabel(2, "N ev sel");
477 hstat->GetXaxis()->SetBinLabel(3, "N cand");
478 hstat->GetXaxis()->SetBinLabel(4, "N cand sel cuts");
479 hstat->GetXaxis()->SetBinLabel(5, "N jets");
480 hstat->GetXaxis()->SetBinLabel(6, "N cand in jet");
482 hstat->GetXaxis()->SetBinLabel(7,"N D");
483 hstat->GetXaxis()->SetBinLabel(8,"N D in jet");
485 hstat->SetNdivisions(1);
488 // Invariant mass related histograms
489 const Int_t nbinsmass = 200;
490 TH2F *hInvMass = new TH2F("hInvMassptD", "D invariant mass distribution", nbinsmass, fMinMass, fMaxMass, 100, 0., 50.);
491 hInvMass->SetStats(kTRUE);
492 hInvMass->GetXaxis()->SetTitle("mass (GeV/c)");
493 hInvMass->GetYaxis()->SetTitle("p_{T} (GeV/c)");
494 fOutput->Add(hInvMass);
496 if (fCandidateType==kDstartoKpipi) {
497 TH1F* hPtPion = new TH1F("hPtPion", "Primary pions candidates pt", 500, 0., 10.);
498 hPtPion->SetStats(kTRUE);
499 hPtPion->GetXaxis()->SetTitle("p_{T} (GeV/c)");
500 hPtPion->GetYaxis()->SetTitle("entries");
501 fOutput->Add(hPtPion);