/************************************************************************** * Copyright(c) 1998-2008, ALICE Experiment at CERN, All rights reserved. * * * * Author: The ALICE Off-line Project. * * Contributors are mentioned in the code where appropriate. * * * * Permission to use, copy, modify and distribute this software and its * * documentation strictly for non-commercial purposes is hereby granted * * without fee, provided that the above copyright notice appears in all * * copies and that both the copyright notice and this permission notice * * appear in the supporting documentation. The authors make no claims * * about the suitability of this software for any purpose. It is * * provided "as is" without express or implied warranty. * **************************************************************************/ ///////////////////////////////////////////////////////////// // // AliAnalysisTaskSE for the extraction of signal(e.g D+) of heavy flavor // decay candidates with the MC truth. // Author: Renu Bala, bala@to.infn.it ///////////////////////////////////////////////////////////// #include #include #include #include #include "AliAODEvent.h" #include "AliAODVertex.h" #include "AliAODTrack.h" #include "AliAODMCHeader.h" #include "AliAODMCParticle.h" #include "AliAODRecoDecayHF3Prong.h" #include "AliAnalysisVertexingHF.h" #include "AliAnalysisTaskSE.h" #include "AliAnalysisTaskSEDplus.h" ClassImp(AliAnalysisTaskSEDplus) //________________________________________________________________________ AliAnalysisTaskSEDplus::AliAnalysisTaskSEDplus(): AliAnalysisTaskSE(), fOutput(0), fNtupleDplus(0), fNtupleDplusbackg(0), fHistMass(0), fHistSignal(0), fHistBackground(0), fVHF(0) { // Default constructor } //________________________________________________________________________ AliAnalysisTaskSEDplus::AliAnalysisTaskSEDplus(const char *name): AliAnalysisTaskSE(name), fOutput(0), fNtupleDplus(0), fNtupleDplusbackg(0), fHistMass(0), fHistSignal(0), fHistBackground(0), fVHF(0) { // Default constructor // Output slot #1 writes into a TList container DefineOutput(1,TList::Class()); //My private output // Output slot #2 writes into a TNtuple container DefineOutput(2,TNtuple::Class()); //My private output // Output slot #3 writes into a TNtuple container DefineOutput(3,TNtuple::Class()); //My private output } //________________________________________________________________________ AliAnalysisTaskSEDplus::~AliAnalysisTaskSEDplus() { // Destructor if (fOutput) { delete fOutput; fOutput = 0; } if (fVHF) { delete fVHF; fVHF = 0; } } //________________________________________________________________________ void AliAnalysisTaskSEDplus::Init() { // Initialization if(fDebug > 1) printf("AnalysisTaskSEDplus::Init() \n"); gROOT->LoadMacro("ConfigVertexingHF.C"); fVHF = (AliAnalysisVertexingHF*)gROOT->ProcessLine("ConfigVertexingHF()"); fVHF->PrintStatus(); return; } //________________________________________________________________________ void AliAnalysisTaskSEDplus::UserCreateOutputObjects() { // Create the output container // if(fDebug > 1) printf("AnalysisTaskSEDplus::UserCreateOutputObjects() \n"); // Several histograms are more conveniently managed in a TList fOutput = new TList(); fOutput->SetOwner(); fHistMass = new TH1F("fHistMass", "D^{+} invariant mass; M [GeV]; Entries",100,1.765,1.965); fHistSignal = new TH1F("fHistSignal", "D^{+} invariant mass - MC; M [GeV]; Entries",100,1.765,1.965); fHistBackground =new TH1F("fHistBackground", "Background invariant mass - MC; M [GeV]; Entries",100,1.765,1.965); fHistMass->Sumw2(); fHistSignal->Sumw2(); fHistBackground->Sumw2(); //fHistMass->SetMinimum(0); //fHistSignal->SetMinimum(0); //fHistBackground->SetMinimum(0); fOutput->Add(fHistMass); fOutput->Add(fHistSignal); fOutput->Add(fHistBackground); fNtupleDplus = new TNtuple("fNtupleDplus","D +","pdg:Px:Py:Pz:Ptpi:PtK:Ptpi2:PtRec:PtTrue:PointingAngle:DecLeng:VxTrue:VxRec:VyRec,VzRec,InvMass:sigvert:d0Pi:d0K:d0Pi2"); fNtupleDplusbackg = new TNtuple("fNtupleDplusbackg","D + backg","Ptpibkg:Ptkbkg:Ptpi2bkg:PtRecbkg:PointingAnglebkg:DLbkg:VxRecbkg:VyRecbkg:VzRecbkg:InvMassbkg:sigvertbkg:d0Pibkg:d0Kbkg:d0Pi2bkg"); return; } //________________________________________________________________________ void AliAnalysisTaskSEDplus::UserExec(Option_t */*option*/) { // Execute analysis for current event: // heavy flavor candidates association to MC truth AliAODEvent *aod = dynamic_cast (InputEvent()); // load Dplus->Kpipi candidates TClonesArray *array3Prong = (TClonesArray*)aod->GetList()->FindObject("Charm3Prong"); if(!array3Prong) { printf("AliAnalysisTaskSEDplus::UserExec: Charm3Prong branch not found!\n"); return; } // AOD primary vertex AliAODVertex *vtx1 = (AliAODVertex*)aod->GetPrimaryVertex(); // vtx1->Print(); // load MC particles TClonesArray *arrayMC = (TClonesArray*)aod->GetList()->FindObject(AliAODMCParticle::StdBranchName()); if(!arrayMC) { printf("AliAnalysisTaskSEDplus::UserExec: MC particles branch not found!\n"); return; } // load MC header AliAODMCHeader *mcHeader = (AliAODMCHeader*)aod->GetList()->FindObject(AliAODMCHeader::StdBranchName()); if(!mcHeader) { printf("AliAnalysisTaskSEDplus::UserExec: MC header branch not found!\n"); return; } Int_t n3Prong = array3Prong->GetEntriesFast(); printf("Number of D+->Kpipi: %d\n",n3Prong); for (Int_t i3Prong = 0; i3Prong < n3Prong; i3Prong++) { AliAODRecoDecayHF3Prong *d = (AliAODRecoDecayHF3Prong*)array3Prong->UncheckedAt(i3Prong); Bool_t unsetvtx=kFALSE; if(!d->GetOwnPrimaryVtx()){ d->SetOwnPrimaryVtx(vtx1); unsetvtx=kTRUE; } if(d->SelectDplus(fVHF->GetDplusCuts())) { Int_t labDp = d->MatchToMC(411,arrayMC); if(labDp>=0) { AliAODMCParticle *partDp = (AliAODMCParticle*)arrayMC->At(labDp); Int_t pdgDp = TMath::Abs(partDp->GetPdgCode()); if(pdgDp==411){ fHistSignal->Fill(d->InvMassDplus()); fHistMass->Fill(d->InvMassDplus()); // Post the data already here PostData(1,fOutput); AliAODMCParticle *dg0 = (AliAODMCParticle*)arrayMC->At(partDp->GetDaughter(0)); Float_t tmp[20]; tmp[0]=pdgDp; tmp[1]=partDp->Px()-d->Px(); tmp[2]=partDp->Py()-d->Py(); tmp[3]=partDp->Pz()-d->Pz(); tmp[4]=d->PtProng(0); tmp[5]=d->PtProng(1); tmp[6]=d->PtProng(2); tmp[7]=d->Pt(); tmp[8]=partDp->Pt(); tmp[9]=d->CosPointingAngle(); tmp[10]=d->DecayLength(); tmp[11]=dg0->Xv(); tmp[12]=d->Xv(); tmp[13]=d->Yv(); tmp[14]=d->Zv(); tmp[15]=d->InvMassDplus(); tmp[16]=d->GetSigmaVert(); tmp[17]=d->Getd0Prong(0); tmp[18]=d->Getd0Prong(1); tmp[19]=d->Getd0Prong(2); fNtupleDplus->Fill(tmp); PostData(2,fNtupleDplus); } } else { Float_t tmpbkg[14]; tmpbkg[0]=d->PtProng(0); tmpbkg[1]=d->PtProng(1); tmpbkg[2]=d->PtProng(2); tmpbkg[3]=d->Pt(); tmpbkg[4]=d->CosPointingAngle(); tmpbkg[5]=d->DecayLength(); tmpbkg[6]=d->Xv(); tmpbkg[7]=d->Yv(); tmpbkg[8]=d->Zv(); tmpbkg[9]=d->InvMassDplus(); tmpbkg[10]=d->GetSigmaVert(); tmpbkg[11]=d->Getd0Prong(0); tmpbkg[12]=d->Getd0Prong(1); tmpbkg[13]=d->Getd0Prong(2); fHistBackground->Fill(d->InvMassDplus()); fNtupleDplusbackg->Fill(tmpbkg); PostData(3,fNtupleDplusbackg); fHistMass->Fill(d->InvMassDplus()); } } if(unsetvtx) d->UnsetOwnPrimaryVtx(); } // end loop on D+->Kpipi return; } //________________________________________________________________________ void AliAnalysisTaskSEDplus::Terminate(Option_t */*option*/) { // Terminate analysis // if(fDebug > 1) printf("AnalysisTaskSEDplus: Terminate() \n"); fOutput = dynamic_cast (GetOutputData(1)); if (!fOutput) { printf("ERROR: fOutput not available\n"); return; } fHistMass = dynamic_cast(fOutput->FindObject("fHistMass")); fHistSignal = dynamic_cast(fOutput->FindObject("fHistSignal")); fHistBackground = dynamic_cast(fOutput->FindObject("fHistBackground")); fNtupleDplus = dynamic_cast(GetOutputData(2)); fNtupleDplusbackg = dynamic_cast(GetOutputData(3)); return; }