AliAnalysisTaskPhiFlow.h

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/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. */
/* See cxx source for full Copyright notice */
/* $Id$ */

// AliAnalysisTaskPhiFlow:
// origin: Redmer Alexander Bertens (rbertens@nikhef.nl)
// analyis task for phi-meson reconstruction and estimation of v_n

#ifndef ALIANALYSISTASKPHIFLOW_H
#define ALIANALYSISTASKPHIFLOW_H

class TH1F;
class TH2F;
class TProfile;
class AliESDEvent;
class AliESDtrackCuts;
class AliFlowTrackCuts;
class AliFlowEvent;
class AliFlowCandidateTrack;
class AliFlowBayesianPID;
class AliEventPoolManager;
class AliPIDCombined;
class AliVVertex;

#include "AliAnalysisTaskSE.h"

class AliPhiMesonHelperTrack : public TObject
{
    public:
        AliPhiMesonHelperTrack(Float_t eta, Float_t phi, Float_t p, Float_t px, Float_t py, Float_t pz, Float_t pt, Int_t charge) : fEta(eta), fPhi(phi), fp(p), fpX(px), fpY(py), fpZ(pz), fpT(pt), fCharge(charge) {  }
        ~AliPhiMesonHelperTrack() {}
        virtual Double_t P()                const { return fp; }
        virtual Double_t Px()               const { return fpX; }
        virtual Double_t Py()               const { return fpY; }
        virtual Double_t Pz()               const { return fpZ; }
        virtual Double_t Pt()               const { return fpT; }
        virtual Double_t Phi()              const { return fPhi; }
        virtual Double_t Eta()              const { return fEta; }
        virtual Int_t Charge()              const { return fCharge; }
        void    InitializeHelperTrack(Float_t eta, Float_t phi, Float_t p, Float_t px, Float_t py, Float_t pz, Float_t pt, Int_t charge) { fEta = eta; fPhi = phi; fp = p; fpX = px; fpY = py; fpZ = pz; fpT = pt; fCharge = charge; }
    private:
        Float_t                             fEta;      // eta
        Float_t                             fPhi;      // phi
        Float_t                             fp;        // p
        Float_t                             fpX;       // pX
        Float_t                             fpY;       // pY
        Float_t                             fpZ;       // pZ
        Float_t                             fpT;       // pT
        Int_t                               fCharge;   // charge
        ClassDef(AliPhiMesonHelperTrack, 1); // lightweight helper track for phi reconstruction
};

class AliAnalysisTaskPhiFlow : public AliAnalysisTaskSE
{
    public:
        AliAnalysisTaskPhiFlow();
        AliAnalysisTaskPhiFlow(const char *name);
        virtual ~AliAnalysisTaskPhiFlow();
        Int_t                                SetDebugLevelPhiTask(Int_t debug) {fDebug = debug; return fDebug; }
        Bool_t                               SetIsMC(Bool_t ismc) {fIsMC = ismc; return fIsMC; }
        Bool_t                               UseEventMixing(Bool_t mix, Bool_t type) {fEventMixing = mix; fTypeMixing = type; return mix; }
        TH1F*                                BookHistogram(const char * name);
        TH2F*                                BookPIDHistogram(const char * name, Bool_t TPC);
        TH1F*                                InitPtSpectraHistograms(Float_t nmin, Float_t nmax);
        TH1F*                                BookPtHistogram(const char* name);
        void                                 AddPhiIdentificationOutputObjects();
        virtual void                         UserCreateOutputObjects();
        AliEventPoolManager*                 InitializeEventMixing();
        void                                 SetPtBins(Float_t bin[19], Int_t n) { for(Int_t i = 0; i < n+1; i++) fPtBins[i] = bin[i]; fNPtBins = n; }
        template <typename T> Double_t       InvariantMass(const T* track1, const T* track2) const;
        //   template <typename T> Double_t       DeltaDipAngle(const T* track1, const T* track2) const;
        //   template <typename T> Bool_t         CheckDeltaDipAngle(const T* track1, const T* track2) const;
        template <typename T> Bool_t         CheckCandidateEtaPtCut(const T* track1, const T* track2) const;
        void                                 SetCentralityWeights(TH1* hist) {fHistCentralityWeights = hist;}
        void                                 SetCentralityParameters(Double_t min, Double_t max, const char* a, const char* b, Bool_t c, Bool_t d) { 
            fCentralityMin = min; 
            fCentralityMax = max; 
            fkCentralityMethodA = a; 
            fkCentralityMethodB = b;
            fCentralityCut2010 = c; 
            fCentralityCut2011 = d;}
        void                                 SetCentralityEstimator(TString name) {fCentralityEstimator = name;}
        void                                 SetCurrentCentralityBin(Double_t c) {fCentrality = c; }
        Double_t                             GetCenMin() const {return fCentralityMin; }
        Double_t                             GetCenMax() const {return fCentralityMax; }
        const char*                          GetCentralityMethod() const {return fkCentralityMethodA; }
        void                                 SetVertexZ(Float_t z) { fVertexRange = z; }
        void                                 SetHarmonic(Float_t h) {fHarmonic = h; }
        Float_t                              GetVertexZ() const { return fVertexRange; }
        //   void                                 SetMaxDeltaDipAngleAndPt(Float_t a, Float_t pt) { fDeltaDipAngle = a;
        //                                                                                          fDeltaDipPt = pt;
        //                                                                                          fApplyDeltaDipCut = kTRUE; };
        //   Float_t                              GetDeltaDipAngle() const {return fDeltaDipAngle; }
        //   Float_t                              GetDeltaDipPt() const {return fDeltaDipPt; }
        template <typename T> Bool_t         EventCut(T* event);
        template <typename T> void           PlotMultiplcities(const T* event) const;
        template <typename T> Bool_t         CheckVertex(const T* event);
        template <typename T> Bool_t         CheckCentrality(T* event);
        void                                 InitializeBayesianPID(AliAODEvent* event);
        template <typename T> Bool_t         PassesTPCbayesianCut(T* track) const;
        Bool_t                               PassesDCACut(AliAODTrack* track) const;
        Bool_t                               IsKaon(AliAODTrack* track) const;
        template <typename T> Double_t       PhiPt(const T* track_1, const T* track_2) const;
        template <typename T> void           PtSelector(Int_t _track_type, const T* track_1, const T* track_2) const;
        template <typename T> Bool_t         PhiTrack(T* track) const;
        template <typename T> void           SetNullCuts(T* esd);
        void                                 PrepareFlowEvent(Int_t iMulti);
        virtual void                         UserExec(Option_t *option);
        virtual void                         Exec(Option_t *);
        void                                 ReconstructionWithEventMixing(TObjArray* MixingCandidates) const;
        virtual void                         Terminate(Option_t *);
        void                                 SetPOICuts(AliFlowTrackCuts *cutsPOI) { fPOICuts = cutsPOI; }
        void                                 SetRPCuts(AliFlowTrackCuts *cutsRP) { fCutsRP = cutsRP; }
        AliFlowTrackCuts*                    GetPOICuts() const {return fPOICuts;}
        AliFlowTrackCuts*                    GetRPCuts() const {return fCutsRP;}
        void                                 SetPIDConfiguration(Double_t prob[7]) { for(Int_t i = 0; i < 7; i++) fPIDConfig[i] = prob[i]; }
        void                                 GetPIDConfiguration(Double_t prob[7]) const {for(Int_t i = 0; i < 7; i++) prob[i] = fPIDConfig[i]; }
        void                                 SetPOIDCAXYZ(Double_t dca[5]) { for(Int_t i = 0; i < 5; i++) fDCAConfig[i] = dca[i]; }
        void                                 GetPOIDCZXYZ(Double_t dca[5]) const { for(Int_t i = 0; i < 5; i++) dca[i] = fDCAConfig[i]; }
        void                                 SetMixingBins(Int_t c[20], Int_t v[20]) {for(Int_t i = 0; i < 20; i++) { fCentralityMixingBins[i] = c[i];
            fVertexMixingBins[i] = v[i]; } }
        void                                 SetMixingParameters(Int_t p[3]) { for(Int_t i = 0; i < 3; i++) fMixingParameters[i] = p[i]; }
        void                                 GetMixingParameters(Int_t p[3]) const { for(Int_t i = 0; i < 3; i++) p[i] = fMixingParameters[i]; } 
        void                                 SetCandidateEtaAndPt(Double_t mineta, Double_t maxeta, Double_t minpt, Double_t maxpt) { fCandidateMinEta = mineta;
            fCandidateMaxEta = maxeta;
            fCandidateMinPt = minpt;
            fCandidateMaxPt = maxpt;
            fCandidateEtaPtCut = kTRUE;}
        void                                 SetCandidateMinMaxY(Double_t min, Double_t max){
            fCandidateMinY = min;
            fCandidateMaxY = max;
            fCandidateYCut = kTRUE;
        }
        void                                 GetCandidateEtaAndPt(Double_t etapt[4]) const { etapt[0] = fCandidateMinEta;
            etapt[1] = fCandidateMaxEta;
            etapt[2] = fCandidateMinPt;
            etapt[3] = fCandidateMaxPt; }
        void                                 SetCommonConstants(Int_t massBins, Double_t minMass, Double_t maxMass) {        fMassBins = massBins;
            fMinMass = minMass;
            fMaxMass= maxMass; }
        void                                 IsMC();
        Bool_t                               SetQA(Bool_t qa) {fQA = qa; return fQA;}
        void                                 SetSkipEventSelection(Bool_t s) {
            fSkipEventSelection = s;
            fUsePidResponse = kTRUE; // bayesian pid object will require some event info
            fCentrality = 5.;}        // should be set by user, skipping event selection will also forego centrality selection
        void                                 SetUsePidResponse(Bool_t s)     {fUsePidResponse = s;}
        Double_t GetWDist(const AliVVertex* v0, const AliVVertex* v1);
        Bool_t                               plpMV(const AliAODEvent* aod);
        void                                 SetRemovePileup(Bool_t p) {fPileUp = p;}
        Short_t                              FindMinNSigma(Double_t nSpi, Double_t nSk, Double_t nSp) const;
        Bool_t                               GetDoubleCountingK(Double_t nSk, Short_t minNSigma) const;

    private:

        Int_t                fDebug; // debug level (0 none, 1 fcn calls, 2 verbose)
        Bool_t               fIsMC; // use mc mode
        Bool_t               fEventMixing; // use event mixing
        Bool_t               fTypeMixing; // select type: kTRUE for unlike sign background, kFALSE for like sign background
        Bool_t               fQA; // make qa plots
        Bool_t               fV0; // use three subevents including vzero
        Int_t                fMassBins; // mass bins
        Double_t             fMinMass; // mass range
        Double_t             fMaxMass; // mass range
        AliFlowTrackCuts     *fCutsRP; // track cuts for reference particles
        AliFlowTrackCuts     *fNullCuts; // dummy cuts for flow event tracks
        AliPIDResponse       *fPIDResponse; 
        AliFlowEvent         *fFlowEvent; 
        AliFlowBayesianPID   *fBayesianResponse; 
        TObjArray            *fCandidates; // candidate array
        Bool_t               fCandidateEtaPtCut; // set eta and pt cut for candidate tracks and combinatorial background
        Double_t             fCandidateMinEta; // minimum eta for candidates
        Double_t             fCandidateMaxEta; // maximum eta for candidates
        Double_t             fCandidateMinPt; // minimum pt for candidates
        Double_t             fCandidateMaxPt; // maximum pt for candidates
        Bool_t               fCandidateYCut; // y cut on candidates
        Double_t             fCandidateMinY; // min y value for candidate
        Double_t             fCandidateMaxY; // max y value for canddiates
        Double_t             fPIDConfig[7]; // configure pid routine
        Double_t             fDCAConfig[5]; // configure dca routine
        Int_t                fMixingParameters[3]; // mixing: poolsize, mixing tracks, pool buffer
        Int_t                fCentralityMixingBins[20]; // configure centrality bins for event mixing
        Int_t                fVertexMixingBins[20]; // configure vertex bins for event mixing
        Float_t              fPtBins[19]; // pt bin borders
        Int_t                fNPtBins; // no of pt bins + 1
        Double_t             fCentrality; // event centrality
        Double_t             fVertex; // event vertex z 
        AliAODEvent          *fAOD;    
        AliEventPoolManager  *fPoolManager; 
        TList                *fOutputList; // ! Output list
        TH1F                 *fEventStats; // ! Histogram for event statistics
        TH1F                 *fCentralityPass; // ! QA histogram of events that pass centrality cut
        TH1F                 *fCentralityNoPass; 
        TH2F                 *fNOPID;
        TH2F                 *fPIDk;
        TH2F                 *fNOPIDTOF; 
        TH2F                 *fPIDTOF; 
        TH1F                 *fInvMNP[18]; 
        TH1F                 *fInvMNN[18]; 
        TH1F                 *fInvMPP[18]; 
        TH1F                 *fPtSpectra[18]; 
        TH1F                 *fPtP; 
        TH1F                 *fPtN; 
        TH1F                 *fPtKP; 
        TH1F                 *fPtKN; 
        TH2F                 *fMultCorAfterCuts; 
        TH2F                 *fMultvsCentr; 
        Double_t             fCentralityMin; // lower bound of cenrality bin
        Double_t             fCentralityMax; // upper bound of centrality bin
        const char           *fkCentralityMethodA; // method used to determine centrality, default
        const char           *fkCentralityMethodB; // method used to determine centrality, fallback
        Bool_t               fCentralityCut2010; // cut away the multiplicity outliers 2010
        Bool_t               fCentralityCut2011; // cut away the multiplicity outliers 2011
        TString              fCentralityEstimator; // centrality estimator for mult selection framework
        AliFlowTrackCuts     *fPOICuts; // cuts for particles of interest (flow package)
        Float_t              fVertexRange; // absolute value of maximum distance of vertex along the z-axis
        TH1F                 *fPhi; 
        TH1F                 *fPt; 
        TH1F                 *fEta; 
        TH1F                 *fVZEROA; 
        TH1F                 *fVZEROC; 
        TH1F                 *fTPCM; 
        //   Float_t              fDeltaDipAngle; // absolute value of delta dip angle to be excluded
        //   Float_t              fDeltaDipPt; // upper value of pt range in which delta dip angle must be applied
        //   Bool_t               fApplyDeltaDipCut; // enforce delta dip cut
        TH2F                 *fDCAAll;
        TH1F                 *fDCAXYQA; 
        TH1F                 *fDCAZQA; 
        TH2F                 *fDCAPrim; 
        TH2F                 *fDCASecondaryWeak; 
        TH2F                 *fDCAMaterial; 
        TProfile             *fSubEventDPhiv2; 
        TProfile             *fV0Data[18][2]; 
        Bool_t               fSkipEventSelection;// skip event selection and set bayesian pid object to MC mode
        Bool_t               fUsePidResponse;//use pid response instead of aliflowbayesianpid object for pid
        AliPIDCombined*      fPIDCombined;   // pid combined
        Bool_t               fPileUp;        // cut pile up
        TF1                  *fLowCut;       
        TF1                  *fHighCut;      
        TF1                  *fMultTOFLowCut;
        TF1                  *fMultTOFHighCut;
        TH1                  *fHistCentralityWeights; // 
        Float_t              fCentralityWeight;
        TH1F                 *fVertexZ; 
        Float_t              fHarmonic; // which harmonic to take

        AliAnalysisTaskPhiFlow(const AliAnalysisTaskPhiFlow&); // Not implemented
        AliAnalysisTaskPhiFlow& operator=(const AliAnalysisTaskPhiFlow&); // Not implemented
        void                 MakeTrack(Double_t, Double_t, Double_t, Double_t, Int_t , Int_t[], Double_t p = 0., Double_t pz = 0.) const;

        ClassDef(AliAnalysisTaskPhiFlow, 9);
};

#endif