AliAnalysisTaskFlavourJetCorrelations.h

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#ifndef ALIANALYSISTASKFLAVOURJETCORRELATIONS_H
#define ALIANALYSISTASKFLAVOURJETCORRELATIONS_H
/**************************************************************************
* 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.                  *
**************************************************************************/

//-----------------------------------------------------------------------
// Author : S. Antônio (University of São Paulo) antonio.silva@cern.ch
//          A. Grelli,  Utrecht University
//          C. Bianchin, Utrecht University
//          X. Zhang, LBNL
//-----------------------------------------------------------------------


#include <TH2F.h>
#include "AliAODEvent.h"
#include "AliAnalysisTaskEmcalJet.h"

class TParticle;
class TClonesArray;
class THnSparse;
class AliMCParticle;
class AliAODMCParticle;
class AliRDHFCuts;
class AliEmcalJet;
class AliAODRecoDecayHF;
class AliAODRecoCascadeHF;
class AliAODEvent;
class AliParticleContainer;
class AliClusterContainer;
class AliJetContainer;

class AliAnalysisTaskFlavourJetCorrelations : public AliAnalysisTaskEmcalJet 
{
   
public:
   
   enum ECandidateType{ kD0toKpi, kDstartoKpipi };
   enum ECorrelationMethod{ kConstituent, kAngular, kResponseMatrix };
   
   AliAnalysisTaskFlavourJetCorrelations();
   AliAnalysisTaskFlavourJetCorrelations(const Char_t* name,AliRDHFCuts* cuts, ECandidateType candtype);
   virtual ~AliAnalysisTaskFlavourJetCorrelations();
   
   virtual void     UserCreateOutputObjects();
   virtual Bool_t   Run();
   virtual void     Terminate(Option_t *);
   virtual void     Init();
   virtual void     LocalInit() {Init();}
   
   // inizializations
   Bool_t DefineHistoForAnalysis();  
   
   // set MC usage
   void   SetMC(Bool_t theMCon) {fUseMCInfo = theMCon;}
   Bool_t GetMC() const {return fUseMCInfo;}
   // set usage of reconstructed tracks
   void   SetUseReco(Bool_t reco) {fUseReco=reco;}
   Bool_t GetUseReco() const {return fUseReco;}
   
   void SetMassLimits(Double_t range, Int_t pdg);
   void SetMassLimits(Double_t lowlimit, Double_t uplimit);
   
   void SetCorrelationMethod(Int_t c) {fCorrelationMethod=c;}
   Int_t GetCorrelationMethod() const {return fCorrelationMethod;}

   void SetUseCandArray(Bool_t b) {fUseCandArray=b;}
   Bool_t GetUseCandArray() const {return fUseCandArray;}

   void SetUseSBArray(Bool_t b) {fUseSBArray=b;}
   Bool_t GetUseSBArray() const {return fUseSBArray;}

   // Array of D0 width for the Dstar
   Bool_t SetD0WidthForDStar(Int_t nptbins,Float_t* width);
   void ConstituentCorrelationMethod(Bool_t IsBkg, AliAODEvent* aodEvent);
   void AngularCorrelationMethod(Bool_t IsBkg, AliAODEvent* aodEvent);
   void CreateResponseMatrix(AliEmcalJet* jet);
   void FillDJetHistograms(AliEmcalJet* jet, Double_t rho, Bool_t IsBkg, AliAODEvent* aodEvent);
   void GetHFJet(AliEmcalJet*& jet, Bool_t IsBkg);
   void FillHistogramsD0JetCorr(AliAODRecoDecayHF* candidate, Double_t z, Double_t ptD, Double_t ptj, Bool_t IsBkg, Bool_t bDInEMCalAcc, Bool_t bJetInEMCalAcc, AliAODEvent* aodEvent);
   void FillHistogramsDstarJetCorr(AliAODRecoCascadeHF* dstar, Double_t z, Double_t ptD, Double_t ptj, Bool_t IsBkg, Bool_t bDInEMCalAcc, Bool_t bJetInEMCalAcc);
   void FillHistogramsMCGenDJetCorr(Double_t z,Double_t ptD,Double_t ptjet, Bool_t bDInEMCalAcc, Bool_t bJetInEMCalAcc);
   void FindMCJet(AliEmcalJet*& mcjet);
   Int_t IsDzeroSideBand(AliAODRecoCascadeHF *candDstar);
   Bool_t InEMCalAcceptance(AliVParticle *vpart);

   void SetAnalyseDBackground(Bool_t b){ fAnalyseDBkg=b; }
   Bool_t GetAnalyseDBackground() const {return fAnalyseDBkg;}
   void SetBuildResponseMatrix(Bool_t b){ fBuildRM=b; }
   Bool_t GetBuildResponseMatrix() const {return fBuildRM;}
   
   
private:
   
   AliAnalysisTaskFlavourJetCorrelations(const AliAnalysisTaskFlavourJetCorrelations &source);
   AliAnalysisTaskFlavourJetCorrelations& operator=(const AliAnalysisTaskFlavourJetCorrelations& source); 
   
   Double_t Z(AliVParticle* part, AliEmcalJet* jet, Double_t rho) const;
   Double_t Z(AliVParticle* part, AliEmcalJet* jet) const;
   Double_t Z(Double_t* p, Double_t *pj) const;
   Double_t ZT(Double_t* p, Double_t *pj) const;
   Float_t DeltaR(AliEmcalJet *p1, AliVParticle *p2, Double_t rho) const;
   Float_t CheckDeltaR(AliEmcalJet *p1, AliVParticle *p2) const;


   Bool_t fUseMCInfo;               // Use MC info
   Bool_t fUseReco;                 // use reconstructed tracks when running on MC
   Int_t  fCandidateType;           // Dstar or D0
   Int_t  fCorrelationMethod;       // Method to correlate D mesons and jets
   Int_t  fPDGmother;               // PDG code of D meson
   Int_t  fNProngs;                 // number of prong of the decay channel
   Int_t  fPDGdaughters[4];         // PDG codes of daughters
   Float_t fSigmaD0[30];            // Sigma of D0 for D*
   TString fBranchName;             // AOD branch name
   AliRDHFCuts *fCuts;              // Cuts

   Double_t fMinMass;               // mass lower limit histogram
   Double_t fMaxMass;               // mass upper limit histogram

   TClonesArray *fCandidateArray;   
   TClonesArray *fSideBandArray;    
   Bool_t fAnalyseDBkg;             // flag to switch off/on the SB analysis (default is off)
   Bool_t fBuildRM;                 // flag to switch on/off the Response Matrix (Needs MC)
    
   Int_t fNAxesBigSparse;           // number of axis
   Bool_t fUseCandArray;            
   Bool_t fUseSBArray;              

   // Histograms
   TH1I* fhstat;                    
   TH1F* fhCentDjet;                
   //generic jet and jet track distributions
   TH1F* fhPtJetTrks;       
   TH1F* fhPhiJetTrks;              
   TH1F* fhEtaJetTrks;              
   TH1F* fhPtJet;                   
   TH1F* fhPhiJet;                  
   TH1F* fhEtaJet;                  

   //D mesons
   TH2F* fhInvMassptD;              
   TH2F* fhDiffSideBand;            
   TH2F* fhInvMassptDbg;            
   TH1F* fhPtPion;                  
   //main histograms
   THnSparse* fhsDphiz;             
   THnSparse* fResponseMatrix;      
   

   ClassDef(AliAnalysisTaskFlavourJetCorrelations,7); // class for charm-jet CorrelationsExch
};

#endif