[u/mrichter/AliRoot.git] / PWG3 / vertexingHF / AliAnalysisTaskSEBkgLikeSignJPSI.cxx

/**************************************************************************
 * Copyright(c) 1998-2009, 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 reading both reconstructed JPSI -> ee candidates
// and like sign pairs and for drawing corresponding distributions
//
// Author: C.Di Giglio, carmelo.digiglio@ba.infn.it
///////////////////////////////////////////////////////////////////////////

#include <TSystem.h>
#include <TROOT.h>
#include <TClonesArray.h>
#include <TNtuple.h>
#include <TList.h>
#include <TH1F.h>

#include "AliAODEvent.h"
#include "AliAODVertex.h"
#include "AliAODTrack.h"
#include "AliAODRecoDecayHF2Prong.h"
#include "AliAnalysisVertexingHF.h"
#include "AliAnalysisTaskSE.h"
#include "AliAnalysisTaskSEBkgLikeSignJPSI.h"

ClassImp(AliAnalysisTaskSEBkgLikeSignJPSI)

//________________________________________________________________________
AliAnalysisTaskSEBkgLikeSignJPSI::AliAnalysisTaskSEBkgLikeSignJPSI():
AliAnalysisTaskSE(),
fOutput(0), 
fHistMassJPSI(0),
fHistMassLS(0),
fHistCtsJPSI(0),           
fHistCtsLS(0),
fHistCtsLSpos(0),
fHistCtsLSneg(0),
fHistCPtaJPSI(0),          
fHistCPtaLS(0),
fHistd0d0JPSI(0),          
fHistd0d0LS(0),
fHistDCAJPSI(0),           
fHistDCALS(0),
fVHF(0),
fTotPosPairs(0),
fTotNegPairs(0),
fLsNormalization(1.)
{
  //
  // Default constructor
  //
}

//________________________________________________________________________
AliAnalysisTaskSEBkgLikeSignJPSI::AliAnalysisTaskSEBkgLikeSignJPSI(const char *name):
AliAnalysisTaskSE(name),
fOutput(0),
fHistMassJPSI(0),
fHistMassLS(0),
fHistCtsJPSI(0),
fHistCtsLS(0),
fHistCtsLSpos(0),
fHistCtsLSneg(0),
fHistCPtaJPSI(0),
fHistCPtaLS(0),
fHistd0d0JPSI(0),
fHistd0d0LS(0),
fHistDCAJPSI(0),
fHistDCALS(0),
fVHF(0),
fTotPosPairs(0),
fTotNegPairs(0),
fLsNormalization(1.)
{
  //
  // Standard constructor
  //
  // Output slot #1 writes into a TList container
  DefineOutput(1,TList::Class());  //My private output
}

//________________________________________________________________________
AliAnalysisTaskSEBkgLikeSignJPSI::~AliAnalysisTaskSEBkgLikeSignJPSI()
{
  // Destructor
  if (fOutput) {
    delete fOutput;
    fOutput = 0;
  }

  if (fVHF) {
    delete fVHF;
    fVHF = 0;
  }

}
//________________________________________________________________________
void AliAnalysisTaskSEBkgLikeSignJPSI::Init()
{
  // Initialization

  if(fDebug > 1) printf("AnalysisTaskSEBkgLikeSignJPSI::Init() \n");

  gROOT->LoadMacro("ConfigVertexingHF.C");

  fVHF = (AliAnalysisVertexingHF*)gROOT->ProcessLine("ConfigVertexingHF()");
  fVHF->PrintStatus();

  return;
}

//________________________________________________________________________
void AliAnalysisTaskSEBkgLikeSignJPSI::UserCreateOutputObjects()
{
  // Create the output container
  //
  if(fDebug > 1) printf("AnalysisTaskSEBkgLikeSignJPSI::UserCreateOutputObjects() \n");

  // Several histograms are more conveniently managed in a TList
  fOutput = new TList();
  fOutput->SetOwner();

  fHistMassJPSI = new TH1F("fHistMassJPSI", "J/#Psi invariant mass; M [GeV]; Entries",200,2.8,3.25);
  fHistMassJPSI->Sumw2();
  fHistMassJPSI->SetMinimum(0);
  fOutput->Add(fHistMassJPSI);

  fHistMassLS = new TH1F("fHistMassLS", "Like sign pairs invariant mass; M [GeV]; Entries",200,2.8,3.25);
  fHistMassLS->Sumw2();
  fHistMassLS->SetMinimum(0);
  fOutput->Add(fHistMassLS);

  fHistCtsJPSI = new TH1F("fHistCtsJPSI", "J/#Psi cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
  fHistCtsJPSI->Sumw2();
  fHistCtsJPSI->SetMinimum(0);
  fOutput->Add(fHistCtsJPSI);

  fHistCtsLS = new TH1F("fHistCtsLS", "Like sign pairs cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
  fHistCtsLS->Sumw2();
  fHistCtsLS->SetMinimum(0);
  fOutput->Add(fHistCtsLS);

  fHistCtsLSpos = new TH1F("fHistCtsLSpos", "Like sign ++ pairs cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
  fHistCtsLSpos->Sumw2();
  fHistCtsLSpos->SetMinimum(0);
  fOutput->Add(fHistCtsLSpos);

  fHistCtsLSneg = new TH1F("fHistCtsLSneg", "Like sign -- pairs cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
  fHistCtsLSneg->Sumw2();
  fHistCtsLSneg->SetMinimum(0);
  fOutput->Add(fHistCtsLSneg);

  fHistCPtaJPSI = new TH1F("fHistCPtaJPSI", "J/#Psi cosine of pointing angle; Cos#Theta_{point}; Entries",200,-1.,1.);
  fHistCPtaJPSI->Sumw2();
  fHistCPtaJPSI->SetMinimum(0);
  fOutput->Add(fHistCPtaJPSI);

  fHistCPtaLS = new TH1F("fHistCPtaLS", "Like sign pairs cosine of pointing angle; Cos#Theta_{point}; Entries",200,-1.,1.);
  fHistCPtaLS->Sumw2();
  fHistCPtaLS->SetMinimum(0);
  fOutput->Add(fHistCPtaLS);

  fHistd0d0JPSI = new TH1F("fHistd0d0JPSI", "J/#Psi product of impact parameters; d0xd0 [#mu m^{2}]; Entries",200,-100000.,100000.);
  fHistd0d0JPSI->Sumw2(); 
  fHistd0d0JPSI->SetMinimum(0);
  fOutput->Add(fHistd0d0JPSI);

  fHistd0d0LS = new TH1F("fHistd0d0LS", "Like sign pairs product of impact parameters; d0xd0 [#mu m^{2}]; Entries",200,-100000.,100000.);
  fHistd0d0LS->Sumw2();
  fHistd0d0LS->SetMinimum(0);
  fOutput->Add(fHistd0d0LS);

  fHistDCAJPSI = new TH1F("fHistDCAJPSI", "J/#Psi distance of closest approach; dca [10^{2}#mu m]; Entries",100,0.,5.);
  fHistDCAJPSI->Sumw2(); 
  fHistDCAJPSI->SetMinimum(0);
  fOutput->Add(fHistDCAJPSI);

  fHistDCALS = new TH1F("fHistDCALS", "Like sign pairs distance of closest approach; dca [10^{2}#mu m]; Entries",100,0.,5.);
  fHistDCALS->Sumw2(); 
  fHistDCALS->SetMinimum(0);
  fOutput->Add(fHistDCALS);

  return;
}

//________________________________________________________________________
void AliAnalysisTaskSEBkgLikeSignJPSI::UserExec(Option_t */*option*/)
{
  // Execute analysis for current event:
  // heavy flavor candidates association to MC truth
  
  AliAODEvent *aod = dynamic_cast<AliAODEvent*> (InputEvent());

  // load heavy flavour vertices
  TClonesArray *arrayVerticesHF =
    (TClonesArray*)aod->GetList()->FindObject("VerticesHF");
  if(!arrayVerticesHF) {
    printf("AliAnalysisTaskSEBkgLikeSignJPSI::UserExec: VerticesHF branch not found!\n");
    return;
  }

  // load JPSI->ee candidates                                                   
  TClonesArray *arrayJPSItoEle =
    (TClonesArray*)aod->GetList()->FindObject("JPSItoEle");
  if(!arrayJPSItoEle) {
    printf("AliAnalysisTaskSEBkgLikeSignJPSI::UserExec: JPSItoEle branch not found!\n");
    return;
  }

  // load like sign candidates
  TClonesArray *arrayLikeSign =
    (TClonesArray*)aod->GetList()->FindObject("LikeSign2Prong");
  if(!arrayLikeSign) {
    printf("AliAnalysisTaskSEBkgLikeSignJPSI::UserExec: LikeSign2Prong branch not found!\n");
    return;
  }

  // AOD primary vertex
  AliAODVertex *vtx1 = (AliAODVertex*)aod->GetPrimaryVertex();

  // make trkIDtoEntry register (temporary)
  Int_t trkIDtoEntry[100000];
  for(Int_t it=0;it<aod->GetNumberOfTracks();it++) {
    AliAODTrack *track = aod->GetTrack(it);
    trkIDtoEntry[track->GetID()]=it;
  }

  // loop over Like sign candidates
  Int_t nPosPairs=0,nNegPairs=0;
  Int_t nLikeSign = arrayLikeSign->GetEntriesFast();
  printf("+++\n+++Number of like sign pairs ---> %d \n+++\n", nLikeSign);

  for(Int_t iLikeSign = 0; iLikeSign < nLikeSign; iLikeSign++) {
    AliAODRecoDecayHF2Prong *d = (AliAODRecoDecayHF2Prong*)arrayLikeSign->UncheckedAt(iLikeSign);
    Bool_t unsetvtx=kFALSE;
    if(!d->GetOwnPrimaryVtx()) {
        d->SetOwnPrimaryVtx(vtx1); // needed to compute all variables
        unsetvtx=kTRUE;
    }
    Int_t okBtoJPSIls=0;
    if(d->SelectBtoJPSI(fVHF->GetBtoJPSICuts(),okBtoJPSIls)) {
       AliAODTrack *trk0 = (AliAODTrack*)d->GetDaughter(0);
       fHistMassLS->Fill(d->InvMassJPSIee());
       fHistCPtaLS->Fill(d->CosPointingAngle());
       fHistd0d0LS->Fill(1e8*d->Prodd0d0());
       fHistDCALS->Fill(100*d->GetDCA());
       //PostData(1,fOutput);
       if(!trk0) {
          trk0=aod->GetTrack(trkIDtoEntry[d->GetProngID(0)]);
          printf("references to standard AOD not available \n");
       }
       if((trk0->Charge())==1) {
          nPosPairs++;
          fHistCtsLS->Fill(d->CosThetaStar(0,443,11,11));
          fHistCtsLSpos->Fill(d->CosThetaStar(0,443,11,11));
          //PostData(1,fOutput);
        } else {
          nNegPairs++;
          fHistCtsLS->Fill(d->CosThetaStarJPSI());
          fHistCtsLSneg->Fill(d->CosThetaStarJPSI());
          //PostData(1,fOutput);
        }
       PostData(1,fOutput);
    }
    if(unsetvtx) d->UnsetOwnPrimaryVtx();
  }

  printf("------------ N. of positive pairs in Event ----- %d \n", nPosPairs);
  printf("------------ N. of negative pairs in Event ----- %d \n", nNegPairs);

  fTotPosPairs += nPosPairs;
  fTotNegPairs += nNegPairs;

  // loop over JPSI candidates
  Int_t nBtoJpsiToEle = arrayJPSItoEle->GetEntriesFast();
  printf("Number of like JPSI -> ee candidates ---> %d \n", nBtoJpsiToEle);

  for (Int_t iBtoJpsiToEle = 0; iBtoJpsiToEle < nBtoJpsiToEle; iBtoJpsiToEle++) {
    AliAODRecoDecayHF2Prong *d = (AliAODRecoDecayHF2Prong*)arrayJPSItoEle->UncheckedAt(iBtoJpsiToEle);
    Bool_t unsetvtx=kFALSE;
    if(!d->GetOwnPrimaryVtx()) {
      d->SetOwnPrimaryVtx(vtx1); // needed to compute all variables
      unsetvtx=kTRUE;
    }
    Int_t okBtoJPSI=0;
    if(d->SelectBtoJPSI(fVHF->GetBtoJPSICuts(),okBtoJPSI)) {
      fHistMassJPSI->Fill(d->InvMassJPSIee());
      fHistCtsJPSI->Fill(d->CosThetaStarJPSI());
      fHistd0d0JPSI->Fill(1e8*d->Prodd0d0());
      fHistCPtaJPSI->Fill(d->CosPointingAngle());
      fHistDCAJPSI->Fill(100*d->GetDCA());
      PostData(1,fOutput);
    }
    if(unsetvtx) d->UnsetOwnPrimaryVtx();
  }

  return;
}

//________________________________________________________________________
void AliAnalysisTaskSEBkgLikeSignJPSI::Terminate(Option_t */*option*/)
{
  // Terminate analysis
  //
  if(fDebug > 1) printf("AnalysisTaskSEBkgLikeSignJPSI: Terminate() \n");

  fOutput = dynamic_cast<TList*> (GetOutputData(1));
  if (!fOutput) {     
    printf("ERROR: fOutput not available\n");
    return;
  }

  fLsNormalization = 2.*TMath::Sqrt(fTotPosPairs*fTotNegPairs); 

  fHistMassJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistMassJPSI"));
  fHistMassLS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistMassLS"));
  fHistCtsJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsJPSI"));
  fHistCtsLS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsLS"));
  fHistCtsLSpos = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsLSpos"));
  fHistCtsLSneg = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsLSneg"));
  fHistCPtaJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCPtaJPSI"));
  fHistCPtaLS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCPtaLS"));
  fHistd0d0JPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistd0d0JPSI"));
  fHistd0d0LS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistd0d0LS"));
  fHistDCAJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistDCAJPSI"));
  fHistDCALS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistDCALS"));

  if(fLsNormalization>0.) {
    fHistMassLS->Scale((1/fLsNormalization)*fHistMassLS->GetEntries());
    fHistCtsLS->Scale((1/fLsNormalization)*fHistCtsLS->GetEntries());
    fHistCtsLSpos->Scale((1/fLsNormalization)*fHistCtsLSpos->GetEntries());
    fHistCtsLSneg->Scale((1/fLsNormalization)*fHistCtsLSneg->GetEntries());
    fHistCPtaLS->Scale((1/fLsNormalization)*fHistCPtaLS->GetEntries());
    fHistd0d0LS->Scale((1/fLsNormalization)*fHistd0d0LS->GetEntries());
    fHistDCALS->Scale((1/fLsNormalization)*fHistDCALS->GetEntries());
  }

  return;
}
Commit	Line	Data
adef5d4e	1	/**************************************************************************
	2	* Copyright(c) 1998-2009, ALICE Experiment at CERN, All rights reserved. *
	3	* *
	4	* Author: The ALICE Off-line Project. *
	5	* Contributors are mentioned in the code where appropriate. *
	6	* *
	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	**************************************************************************/
	15
	16	///////////////////////////////////////////////////////////////////////////
	17	//
	18	// AliAnalysisTaskSE for reading both reconstructed JPSI -> ee candidates
	19	// and like sign pairs and for drawing corresponding distributions
	20	//
	21	// Author: C.Di Giglio, carmelo.digiglio@ba.infn.it
	22	///////////////////////////////////////////////////////////////////////////
	23
	24	#include <TSystem.h>
	25	#include <TROOT.h>
	26	#include <TClonesArray.h>
cbfc2f04	27	#include <TNtuple.h>
	28	#include <TList.h>
	29	#include <TH1F.h>
adef5d4e	30
	31	#include "AliAODEvent.h"
	32	#include "AliAODVertex.h"
	33	#include "AliAODTrack.h"
	34	#include "AliAODRecoDecayHF2Prong.h"
cbfc2f04	35	#include "AliAnalysisVertexingHF.h"
adef5d4e	36	#include "AliAnalysisTaskSE.h"
	37	#include "AliAnalysisTaskSEBkgLikeSignJPSI.h"
	38
	39	ClassImp(AliAnalysisTaskSEBkgLikeSignJPSI)
	40
	41	//________________________________________________________________________
	42	AliAnalysisTaskSEBkgLikeSignJPSI::AliAnalysisTaskSEBkgLikeSignJPSI():
	43	AliAnalysisTaskSE(),
	44	fOutput(0),
	45	fHistMassJPSI(0),
	46	fHistMassLS(0),
	47	fHistCtsJPSI(0),
	48	fHistCtsLS(0),
	49	fHistCtsLSpos(0),
	50	fHistCtsLSneg(0),
	51	fHistCPtaJPSI(0),
	52	fHistCPtaLS(0),
	53	fHistd0d0JPSI(0),
	54	fHistd0d0LS(0),
	55	fHistDCAJPSI(0),
	56	fHistDCALS(0),
	57	fVHF(0),
	58	fTotPosPairs(0),
	59	fTotNegPairs(0),
	60	fLsNormalization(1.)
	61	{
	62	//
	63	// Default constructor
	64	//
adef5d4e	65	}
	66
	67	//________________________________________________________________________
	68	AliAnalysisTaskSEBkgLikeSignJPSI::AliAnalysisTaskSEBkgLikeSignJPSI(const char *name):
	69	AliAnalysisTaskSE(name),
	70	fOutput(0),
	71	fHistMassJPSI(0),
	72	fHistMassLS(0),
	73	fHistCtsJPSI(0),
	74	fHistCtsLS(0),
	75	fHistCtsLSpos(0),
	76	fHistCtsLSneg(0),
	77	fHistCPtaJPSI(0),
	78	fHistCPtaLS(0),
	79	fHistd0d0JPSI(0),
	80	fHistd0d0LS(0),
	81	fHistDCAJPSI(0),
	82	fHistDCALS(0),
	83	fVHF(0),
	84	fTotPosPairs(0),
	85	fTotNegPairs(0),
	86	fLsNormalization(1.)
	87	{
	88	//
9d6d35b0	89	// Standard constructor
adef5d4e	90	//
	91	// Output slot #1 writes into a TList container
	92	DefineOutput(1,TList::Class()); //My private output
	93	}
	94
	95	//________________________________________________________________________
	96	AliAnalysisTaskSEBkgLikeSignJPSI::~AliAnalysisTaskSEBkgLikeSignJPSI()
	97	{
	98	// Destructor
	99	if (fOutput) {
	100	delete fOutput;
	101	fOutput = 0;
	102	}
	103
	104	if (fVHF) {
	105	delete fVHF;
	106	fVHF = 0;
	107	}
	108
	109	}
	110	//________________________________________________________________________
	111	void AliAnalysisTaskSEBkgLikeSignJPSI::Init()
	112	{
	113	// Initialization
	114
	115	if(fDebug > 1) printf("AnalysisTaskSEBkgLikeSignJPSI::Init() \n");
	116
	117	gROOT->LoadMacro("ConfigVertexingHF.C");
	118
	119	fVHF = (AliAnalysisVertexingHF*)gROOT->ProcessLine("ConfigVertexingHF()");
	120	fVHF->PrintStatus();
	121
	122	return;
adef5d4e	123	}
	124
	125	//________________________________________________________________________
	126	void AliAnalysisTaskSEBkgLikeSignJPSI::UserCreateOutputObjects()
	127	{
	128	// Create the output container
	129	//
	130	if(fDebug > 1) printf("AnalysisTaskSEBkgLikeSignJPSI::UserCreateOutputObjects() \n");
	131
	132	// Several histograms are more conveniently managed in a TList
	133	fOutput = new TList();
	134	fOutput->SetOwner();
	135
	136	fHistMassJPSI = new TH1F("fHistMassJPSI", "J/#Psi invariant mass; M [GeV]; Entries",200,2.8,3.25);
	137	fHistMassJPSI->Sumw2();
	138	fHistMassJPSI->SetMinimum(0);
	139	fOutput->Add(fHistMassJPSI);
	140
	141	fHistMassLS = new TH1F("fHistMassLS", "Like sign pairs invariant mass; M [GeV]; Entries",200,2.8,3.25);
	142	fHistMassLS->Sumw2();
	143	fHistMassLS->SetMinimum(0);
	144	fOutput->Add(fHistMassLS);
	145
	146	fHistCtsJPSI = new TH1F("fHistCtsJPSI", "J/#Psi cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
	147	fHistCtsJPSI->Sumw2();
	148	fHistCtsJPSI->SetMinimum(0);
	149	fOutput->Add(fHistCtsJPSI);
	150
	151	fHistCtsLS = new TH1F("fHistCtsLS", "Like sign pairs cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
	152	fHistCtsLS->Sumw2();
	153	fHistCtsLS->SetMinimum(0);
	154	fOutput->Add(fHistCtsLS);
	155
	156	fHistCtsLSpos = new TH1F("fHistCtsLSpos", "Like sign ++ pairs cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
	157	fHistCtsLSpos->Sumw2();
	158	fHistCtsLSpos->SetMinimum(0);
	159	fOutput->Add(fHistCtsLSpos);
	160
	161	fHistCtsLSneg = new TH1F("fHistCtsLSneg", "Like sign -- pairs cosine of decay angle; Cos#Theta*; Entries",200,-1.,1.);
	162	fHistCtsLSneg->Sumw2();
	163	fHistCtsLSneg->SetMinimum(0);
	164	fOutput->Add(fHistCtsLSneg);
	165
	166	fHistCPtaJPSI = new TH1F("fHistCPtaJPSI", "J/#Psi cosine of pointing angle; Cos#Theta_{point}; Entries",200,-1.,1.);
	167	fHistCPtaJPSI->Sumw2();
	168	fHistCPtaJPSI->SetMinimum(0);
	169	fOutput->Add(fHistCPtaJPSI);
	170
	171	fHistCPtaLS = new TH1F("fHistCPtaLS", "Like sign pairs cosine of pointing angle; Cos#Theta_{point}; Entries",200,-1.,1.);
	172	fHistCPtaLS->Sumw2();
	173	fHistCPtaLS->SetMinimum(0);
	174	fOutput->Add(fHistCPtaLS);
	175
	176	fHistd0d0JPSI = new TH1F("fHistd0d0JPSI", "J/#Psi product of impact parameters; d0xd0 [#mu m^{2}]; Entries",200,-100000.,100000.);
	177	fHistd0d0JPSI->Sumw2();
	178	fHistd0d0JPSI->SetMinimum(0);
	179	fOutput->Add(fHistd0d0JPSI);
	180
	181	fHistd0d0LS = new TH1F("fHistd0d0LS", "Like sign pairs product of impact parameters; d0xd0 [#mu m^{2}]; Entries",200,-100000.,100000.);
	182	fHistd0d0LS->Sumw2();
	183	fHistd0d0LS->SetMinimum(0);
	184	fOutput->Add(fHistd0d0LS);
	185
	186	fHistDCAJPSI = new TH1F("fHistDCAJPSI", "J/#Psi distance of closest approach; dca [10^{2}#mu m]; Entries",100,0.,5.);
187	fHistDCAJPSI->Sumw2();
188	fHistDCAJPSI->SetMinimum(0);
189	fOutput->Add(fHistDCAJPSI);
190
191	fHistDCALS = new TH1F("fHistDCALS", "Like sign pairs distance of closest approach; dca [10^{2}#mu m]; Entries",100,0.,5.);
192	fHistDCALS->Sumw2();
193	fHistDCALS->SetMinimum(0);
194	fOutput->Add(fHistDCALS);
195
196	return;
197	}
198
199	//________________________________________________________________________
200	void AliAnalysisTaskSEBkgLikeSignJPSI::UserExec(Option_t /option*/)
201	{
202	// Execute analysis for current event:
203	// heavy flavor candidates association to MC truth
204
205	AliAODEvent aod = dynamic_cast<AliAODEvent> (InputEvent());
206
207	// load heavy flavour vertices
208	TClonesArray *arrayVerticesHF =
209	(TClonesArray*)aod->GetList()->FindObject("VerticesHF");
210	if(!arrayVerticesHF) {
211	printf("AliAnalysisTaskSEBkgLikeSignJPSI::UserExec: VerticesHF branch not found!\n");
212	return;
213	}
214
215	// load JPSI->ee candidates
216	TClonesArray *arrayJPSItoEle =
217	(TClonesArray*)aod->GetList()->FindObject("JPSItoEle");
218	if(!arrayJPSItoEle) {
219	printf("AliAnalysisTaskSEBkgLikeSignJPSI::UserExec: JPSItoEle branch not found!\n");
220	return;
221	}
222
223	// load like sign candidates
224	TClonesArray *arrayLikeSign =
225	(TClonesArray*)aod->GetList()->FindObject("LikeSign2Prong");
226	if(!arrayLikeSign) {
227	printf("AliAnalysisTaskSEBkgLikeSignJPSI::UserExec: LikeSign2Prong branch not found!\n");
228	return;
229	}
230
231	// AOD primary vertex
232	AliAODVertex vtx1 = (AliAODVertex)aod->GetPrimaryVertex();
233
234	// make trkIDtoEntry register (temporary)
235	Int_t trkIDtoEntry[100000];
236	for(Int_t it=0;it<aod->GetNumberOfTracks();it++) {
237	AliAODTrack *track = aod->GetTrack(it);
238	trkIDtoEntry[track->GetID()]=it;
239	}
240
241	// loop over Like sign candidates
242	Int_t nPosPairs=0,nNegPairs=0;
243	Int_t nLikeSign = arrayLikeSign->GetEntriesFast();
244	printf("+++\n+++Number of like sign pairs ---> %d \n+++\n", nLikeSign);
245
246	for(Int_t iLikeSign = 0; iLikeSign < nLikeSign; iLikeSign++) {
247	AliAODRecoDecayHF2Prong d = (AliAODRecoDecayHF2Prong)arrayLikeSign->UncheckedAt(iLikeSign);
248	Bool_t unsetvtx=kFALSE;
249	if(!d->GetOwnPrimaryVtx()) {
250	d->SetOwnPrimaryVtx(vtx1); // needed to compute all variables
251	unsetvtx=kTRUE;
252	}
253	Int_t okBtoJPSIls=0;
254	if(d->SelectBtoJPSI(fVHF->GetBtoJPSICuts(),okBtoJPSIls)) {
1fd36d27	255	AliAODTrack trk0 = (AliAODTrack)d->GetDaughter(0);
adef5d4e	256	fHistMassLS->Fill(d->InvMassJPSIee());
	257	fHistCPtaLS->Fill(d->CosPointingAngle());
	258	fHistd0d0LS->Fill(1e8*d->Prodd0d0());
adef5d4e	259	fHistDCALS->Fill(100*d->GetDCA());
1fd36d27	260	//PostData(1,fOutput);
adef5d4e	261	if(!trk0) {
	262	trk0=aod->GetTrack(trkIDtoEntry[d->GetProngID(0)]);
	263	printf("references to standard AOD not available \n");
	264	}
	265	if((trk0->Charge())==1) {
	266	nPosPairs++;
1fd36d27	267	fHistCtsLS->Fill(d->CosThetaStar(0,443,11,11));
	268	fHistCtsLSpos->Fill(d->CosThetaStar(0,443,11,11));
	269	//PostData(1,fOutput);
adef5d4e	270	} else {
adef5d4e	271	nNegPairs++;
1fd36d27	272	fHistCtsLS->Fill(d->CosThetaStarJPSI());
adef5d4e	273	fHistCtsLSneg->Fill(d->CosThetaStarJPSI());
1fd36d27	274	//PostData(1,fOutput);
adef5d4e	275	}
cbfc2f04	276	PostData(1,fOutput);
cbfc2f04	277	}
adef5d4e	278	if(unsetvtx) d->UnsetOwnPrimaryVtx();
	279	}
	280
	281	printf("------------ N. of positive pairs in Event ----- %d \n", nPosPairs);
	282	printf("------------ N. of negative pairs in Event ----- %d \n", nNegPairs);
	283
	284	fTotPosPairs += nPosPairs;
	285	fTotNegPairs += nNegPairs;
	286
	287	// loop over JPSI candidates
	288	Int_t nBtoJpsiToEle = arrayJPSItoEle->GetEntriesFast();
	289	printf("Number of like JPSI -> ee candidates ---> %d \n", nBtoJpsiToEle);
	290
	291	for (Int_t iBtoJpsiToEle = 0; iBtoJpsiToEle < nBtoJpsiToEle; iBtoJpsiToEle++) {
	292	AliAODRecoDecayHF2Prong d = (AliAODRecoDecayHF2Prong)arrayJPSItoEle->UncheckedAt(iBtoJpsiToEle);
	293	Bool_t unsetvtx=kFALSE;
	294	if(!d->GetOwnPrimaryVtx()) {
	295	d->SetOwnPrimaryVtx(vtx1); // needed to compute all variables
	296	unsetvtx=kTRUE;
	297	}
	298	Int_t okBtoJPSI=0;
	299	if(d->SelectBtoJPSI(fVHF->GetBtoJPSICuts(),okBtoJPSI)) {
	300	fHistMassJPSI->Fill(d->InvMassJPSIee());
	301	fHistCtsJPSI->Fill(d->CosThetaStarJPSI());
	302	fHistd0d0JPSI->Fill(1e8*d->Prodd0d0());
	303	fHistCPtaJPSI->Fill(d->CosPointingAngle());
	304	fHistDCAJPSI->Fill(100*d->GetDCA());
	305	PostData(1,fOutput);
	306	}
cbfc2f04	307	if(unsetvtx) d->UnsetOwnPrimaryVtx();
adef5d4e	308	}
	309
	310	return;
	311	}
	312
	313	//________________________________________________________________________
	314	void AliAnalysisTaskSEBkgLikeSignJPSI::Terminate(Option_t /option*/)
	315	{
	316	// Terminate analysis
	317	//
	318	if(fDebug > 1) printf("AnalysisTaskSEBkgLikeSignJPSI: Terminate() \n");
	319
	320	fOutput = dynamic_cast<TList*> (GetOutputData(1));
	321	if (!fOutput) {
	322	printf("ERROR: fOutput not available\n");
	323	return;
	324	}
	325
	326	fLsNormalization = 2.TMath::Sqrt(fTotPosPairsfTotNegPairs);
	327
	328	fHistMassJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistMassJPSI"));
	329	fHistMassLS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistMassLS"));
	330	fHistCtsJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsJPSI"));
	331	fHistCtsLS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsLS"));
	332	fHistCtsLSpos = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsLSpos"));
	333	fHistCtsLSneg = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCtsLSneg"));
	334	fHistCPtaJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCPtaJPSI"));
	335	fHistCPtaLS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistCPtaLS"));
	336	fHistd0d0JPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistd0d0JPSI"));
	337	fHistd0d0LS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistd0d0LS"));
	338	fHistDCAJPSI = dynamic_cast<TH1F*>(fOutput->FindObject("fHistDCAJPSI"));
	339	fHistDCALS = dynamic_cast<TH1F*>(fOutput->FindObject("fHistDCALS"));
	340
7fcc8b15	341	if(fLsNormalization>0.) {
	342	fHistMassLS->Scale((1/fLsNormalization)*fHistMassLS->GetEntries());
	343	fHistCtsLS->Scale((1/fLsNormalization)*fHistCtsLS->GetEntries());
	344	fHistCtsLSpos->Scale((1/fLsNormalization)*fHistCtsLSpos->GetEntries());
	345	fHistCtsLSneg->Scale((1/fLsNormalization)*fHistCtsLSneg->GetEntries());
	346	fHistCPtaLS->Scale((1/fLsNormalization)*fHistCPtaLS->GetEntries());
	347	fHistd0d0LS->Scale((1/fLsNormalization)*fHistd0d0LS->GetEntries());
	348	fHistDCALS->Scale((1/fLsNormalization)*fHistDCALS->GetEntries());
	349	}
adef5d4e	350
	351	return;
	352	}