[u/mrichter/AliRoot.git] / STEER / AliAODRecoDecay.h

#ifndef ALIAODRECODECAY_H
#define ALIAODRECODECAY_H
/* Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

//***********************************************************
// Class AliAODRecoDecay
// base class for AOD reconstructed decays
// Author: A.Dainese, andrea.dainese@lnl.infn.it
//***********************************************************

#include <TMath.h>
#include <TRef.h>
#include <TClonesArray.h>
#include "AliAODVertex.h"
#include "AliAODTrack.h"
#include "AliVTrack.h"

class AliAODRecoDecay : public AliVTrack {

 public:

  AliAODRecoDecay();
  AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
		  Double_t *px,Double_t *py,Double_t *pz,
		  Double_t *d0);
  AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
		  Double_t *d0);
  virtual ~AliAODRecoDecay();

  AliAODRecoDecay(const AliAODRecoDecay& source);
  AliAODRecoDecay& operator=(const AliAODRecoDecay& source); 
   

  // decay vertex
  Double_t GetSecVtxX() const {return GetSecondaryVtx()->GetX();}
  Double_t GetSecVtxY() const {return GetSecondaryVtx()->GetY();}
  Double_t GetSecVtxZ() const {return GetSecondaryVtx()->GetZ();}
  Double_t RadiusSecVtx() const;
  void     SetSecondaryVtx(AliAODVertex *vtx2) {fSecondaryVtx=vtx2;}
  AliAODVertex* GetSecondaryVtx() const { return (((AliAODVertex*)fSecondaryVtx.GetObject()) ? (AliAODVertex*)fSecondaryVtx.GetObject() : GetOwnSecondaryVtx()); }
  void     SetOwnSecondaryVtx(AliAODVertex *vtx2) {fOwnSecondaryVtx=vtx2;}
  AliAODVertex* GetOwnSecondaryVtx() const {return fOwnSecondaryVtx;}
  void     GetSecondaryVtx(Double_t vtx[3]) const;
  Double_t GetReducedChi2() const {return GetSecondaryVtx()->GetChi2perNDF();}
  Short_t  Charge() const {return fCharge;}
  Short_t  GetCharge() const {return fCharge;}
  void     SetCharge(Short_t charge=0) {fCharge=charge;}

  // Match to MC signal:
  // check if this candidate is matched to a MC signal
  // If no, return -1
  // If yes, return label (>=0) of the AliAODMCParticle
  Int_t    MatchToMC(Int_t pdgabs,TClonesArray *mcArray) const;

  // PID
  void      SetPID(Int_t nprongs,Double_t *pid);
  Double_t *GetPID() const { return fPID; }
  void      GetPIDProng(Int_t ip,Double_t *pid) const;
  virtual const Double_t *PID() const { return fPID; }

  // prong-to-prong DCAs
  void    SetDCAs(Int_t nDCA,Double_t *dca);
  void    SetDCA(Double_t dca); // 2 prong
  Double_t GetDCA(Int_t i=0) const {return fDCA[i];}

  //event and run number
  void SetEventRunNumbers(Int_t en,Int_t rn) 
    { fEventNumber=en; fRunNumber=rn; return; }
  Int_t GetEventNumber() const { return fEventNumber; }
  Int_t GetRunNumber() const { return fRunNumber; }

  // methods of AliVTrack
  virtual Int_t    GetID() const { return -1; }
  virtual UChar_t  GetITSClusterMap() const;
  virtual ULong_t  GetStatus() const;
  virtual Bool_t   GetXYZ(Double_t *p) const { return XvYvZv(p); }
  virtual Bool_t   GetCovarianceXYZPxPyPz(Double_t cv[21]) const;

  // kinematics & topology
  Double_t Px() const; 
  Double_t Py() const;
  Double_t Pz() const;
  Double_t P() const {return TMath::Sqrt(Px()*Px()+Py()*Py()+Pz()*Pz());}
  Double_t Pt() const {return TMath::Sqrt(Px()*Px()+Py()*Py());}
  Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);}
  Bool_t   PxPyPz(Double_t p[3]) const { p[0] = Px(); p[1] = Py(); p[2] = Pz(); return kTRUE; }
  Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());}
  Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));}
  Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));}
  Double_t Xv() const { return GetSecVtxX(); }
  Double_t Yv() const { return GetSecVtxY(); }
  Double_t Zv() const { return GetSecVtxZ(); }
  virtual Bool_t   XvYvZv(Double_t x[3]) const { x[0] = Xv(); x[1] = Yv(); x[2] = Zv(); return kTRUE; }
  Double_t E(UInt_t pdg) const;
  Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));}
  Double_t DecayLength(Double_t point[3]) const;
  Double_t DecayLength(AliAODVertex *vtx1) const
  {return GetSecondaryVtx()->DistanceToVertex(vtx1);}
  Double_t DecayLengthError(AliAODVertex *vtx1) const
    {return GetSecondaryVtx()->ErrorDistanceToVertex(vtx1);}
  Double_t NormalizedDecayLength(AliAODVertex *vtx1) const 
    {return DecayLength(vtx1)/DecayLengthError(vtx1);}
  Double_t DecayLengthXY(Double_t point[3]) const;
  Double_t DecayLengthXY(AliAODVertex *vtx1) const
    {return GetSecondaryVtx()->DistanceXYToVertex(vtx1);}
  Double_t DecayLengthXYError(AliAODVertex *vtx1) const
    {return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);}
  Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const 
    {return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);}
  Double_t Ct(UInt_t pdg,Double_t point[3]) const;
  Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const;
  Double_t CosPointingAngle(Double_t point[3]) const;
  Double_t CosPointingAngle(AliAODVertex *vtx1) const;
  Double_t CosPointingAngleXY(Double_t point[3]) const;
  Double_t CosPointingAngleXY(AliAODVertex *vtx1) const;
  Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const;
  Double_t InvMass(Int_t npdg,UInt_t *pdg) const;
  Double_t ImpParXY(Double_t point[3]) const;
  Double_t ImpParXY(AliAODVertex *vtx1) const;

  // prongs
  Int_t    GetNProngs() const {return fNProngs;}
  Int_t    GetNDaughters() const {return GetSecondaryVtx()->GetNDaughters();}
  TObject *GetDaughter(Int_t i) const {return (GetNDaughters()>i ? GetSecondaryVtx()->GetDaughter(i) : 0x0);}

  Short_t  ChargeProng(Int_t ip) const;
  Double_t Getd0Prong(Int_t ip) const {return fd0[ip];}
  Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];} 
  Double_t PxProng(Int_t ip) const {return fPx[ip];}
  Double_t PyProng(Int_t ip) const {return fPy[ip];}
  Double_t PzProng(Int_t ip) const {return fPz[ip];}
  Double_t PtProng(Int_t ip) const; 
  Double_t PProng(Int_t ip) const;
  Double_t PhiProng(Int_t ip) const 
    {return TMath::ATan2(PyProng(ip),PxProng(ip));}
    Double_t ThetaProng(Int_t ip) const 
      {return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));}
  Double_t EtaProng(Int_t ip) const 
    {return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));}
  Double_t EProng(Int_t ip,UInt_t pdg) const;
  Double_t YProng(Int_t ip,UInt_t pdg) const 
    {return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));}
  Double_t Alpha() const;             // for Armenteros-Podolanski plot (V0's)
  Double_t QlProng(Int_t ip) const;
  Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's)
  Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const;
  Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
  Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const;
  Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
  Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const;
  Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const;

  // relate to other objects
  //Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex
  //Double_t DistanceToTrack(AliAODTrack *trk)   // distance to a AliAODTrack


  // print
  void    Print(Option_t* option = "") const;
  //void    PrintIndices() const {GetSecondaryVtx()->PrintIndices();}

  // dummy functions for inheritance from AliVParticle
  Double_t E() const 
    {printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;}
  Double_t Y() const 
    {printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;}
  Double_t M() const 
    {printf("Dummy function"); return (Double_t)-999.;}
  Int_t GetLabel() const {return -1;}
 protected:

  Int_t    MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t dgLabels[10],Int_t ndg) const;
  Int_t    MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t dgLabels[10]) const { return MatchToMC(pdgabs,mcArray,dgLabels,GetNDaughters()); }

  TRef     fSecondaryVtx;  // decay vertex
  AliAODVertex *fOwnSecondaryVtx;  // temporary solution (to work outside AliAODEvent)
  Short_t  fCharge;  // charge, use this convention for prongs charges:
                     // if(charge== 0) even-index prongs are +
                     //                odd-index prongs are -
                     // if(charge==+1) even-index prongs are +
                     //                odd-index prongs are -
                     // if(charge==-1) even-index prongs are -
                     //                odd-index prongs are +

  // TEMPORARY, to be removed when we do analysis on AliAODEvent
  Int_t fNProngs;    // number of prongs
  Int_t fNDCA;       // number of dca's
  Int_t fNPID;       // number of PID probabilities
  Double32_t *fPx;   //[fNProngs] px of tracks at the vertex [GeV/c]
  Double32_t *fPy;   //[fNProngs] py of tracks at the vertex [GeV/c]
  Double32_t *fPz;   //[fNProngs] pz of tracks at the vertex [GeV/c]
  Double32_t *fd0;   //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm]
  Double32_t *fDCA;  //[fNDCA] prong-to-prong DCA [cm]
                     // convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,...
  Double32_t *fPID;  //[fNPID] combined pid
                     //  (combined detector response probabilities)
                            
  // TEMPORARY, to be removed when we do analysis on AliAODEvent
  Int_t fEventNumber;
  Int_t fRunNumber;
  // TO BE PUT IN SPECIAL MC CLASS
  //Bool_t   fSignal; // TRUE if signal, FALSE if background (for simulation)
  //Int_t  fTrkNum[2]; // numbers of the two decay tracks  
  //Int_t fPdg[2];  // PDG codes of the two tracks (for sim.)
  //Int_t fMum[2];  // PDG codes of the mothers    (for sim.)

  //

  ClassDef(AliAODRecoDecay,4)  // base class for AOD reconstructed decays
};


inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const
{
  if(fCharge==0 || fCharge==+1) {
    if(ip%2==0) {
      return (Short_t)1;
    } else {
      return (Short_t)-1;
    }
  } else { // fCharge==-1
    if(ip%2==0) {
      return (Short_t)-1;
    } else {
      return (Short_t)1;
    }
  }
}

inline Double_t AliAODRecoDecay::RadiusSecVtx() const 
{ 
  return TMath::Sqrt(GetSecVtxX()*GetSecVtxX()+GetSecVtxY()*GetSecVtxY());
}

inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const 
{
  GetSecondaryVtx()->GetPosition(vtx);
  return;
}

inline Double_t AliAODRecoDecay::Px() const 
{
  Double_t px=0.; 
  for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i); 
  return px;
}

inline Double_t AliAODRecoDecay::Py() const 
{
  Double_t py=0.; 
  for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i); 
  return py;
}

inline Double_t AliAODRecoDecay::Pz() const 
{
  Double_t pz=0.; 
  for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i); 
  return pz;
}

inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const
{
  Double_t v[3];
  vtx1->GetPosition(v);
  return Ct(pdg,v);
}

inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const
{
  Double_t v[3];
  vtx1->GetPosition(v);
  return CosPointingAngle(v);
}

inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const
{
  Double_t v[3];
  vtx1->GetPosition(v);
  return CosPointingAngleXY(v);
}

inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const
{
  Double_t v[3];
  vtx1->GetPosition(v);
  return ImpParXY(v);
}

inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const 
{
  return TMath::Sqrt(PxProng(ip)*PxProng(ip)+PyProng(ip)*PyProng(ip));
}

inline Double_t AliAODRecoDecay::PProng(Int_t ip) const 
{
  return TMath::Sqrt(PtProng(ip)*PtProng(ip)+PzProng(ip)*PzProng(ip));
}

inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
{
  Double_t v[3];
  vtx1->GetPosition(v);
  return QlProngFlightLine(ip,v);
}

inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
{
  Double_t v[3];
  vtx1->GetPosition(v);
  return QtProngFlightLine(ip,v);
}

inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca) 
{
  if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) { 
    printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2");
    return;
  }
  if(fDCA) delete [] fDCA;
  fNDCA = nDCA;
  fDCA = new Double32_t[nDCA];
  for(Int_t i=0;i<nDCA;i++) 
    fDCA[i] = dca[i]; 
  return;
}

inline void AliAODRecoDecay::SetDCA(Double_t dca) 
{
  Double_t ddca[1]; ddca[0]=dca;
  SetDCAs(1,ddca);
  return;
}

inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid) 
{
  if(nprongs!=GetNProngs()) {
    printf("Wrong number of prongs");
    return;
  }
  if(fPID) delete [] fPID;
  fNPID = nprongs*5;
  fPID = new Double32_t[nprongs*5];
  for(Int_t i=0;i<nprongs;i++) 
    for(Int_t j=0;j<5;j++)
      fPID[i*5+j] = pid[i*5+j]; 
  return;
}

inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const
{ 
  for(Int_t j=0;j<5;j++)
    pid[j] = fPID[ip*5+j];
  return;
}


#endif
Commit	Line	Data
7de7497b	1	#ifndef ALIAODRECODECAY_H
	2	#define ALIAODRECODECAY_H
	3	/* Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. *
	4	* See cxx source for full Copyright notice */
	5
	6	//***********************************************************
	7	// Class AliAODRecoDecay
	8	// base class for AOD reconstructed decays
	9	// Author: A.Dainese, andrea.dainese@lnl.infn.it
	10	//***********************************************************
	11
	12	#include <TMath.h>
5cc73331	13	#include <TRef.h>
bfd68286	14	#include <TClonesArray.h>
7de7497b	15	#include "AliAODVertex.h"
58b0186f	16	#include "AliAODTrack.h"
e045ffda	17	#include "AliVTrack.h"
7de7497b	18
e045ffda	19	class AliAODRecoDecay : public AliVTrack {
7de7497b	20
	21	public:
	22
	23	AliAODRecoDecay();
	24	AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
	25	Double_t px,Double_t py,Double_t *pz,
	26	Double_t *d0);
	27	AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
	28	Double_t *d0);
	29	virtual ~AliAODRecoDecay();
	30
	31	AliAODRecoDecay(const AliAODRecoDecay& source);
	32	AliAODRecoDecay& operator=(const AliAODRecoDecay& source);
	33
	34
	35	// decay vertex
5cc73331	36	Double_t GetSecVtxX() const {return GetSecondaryVtx()->GetX();}
	37	Double_t GetSecVtxY() const {return GetSecondaryVtx()->GetY();}
	38	Double_t GetSecVtxZ() const {return GetSecondaryVtx()->GetZ();}
7de7497b	39	Double_t RadiusSecVtx() const;
7de7497b	40	void SetSecondaryVtx(AliAODVertex *vtx2) {fSecondaryVtx=vtx2;}
a11de4a0	41	AliAODVertex* GetSecondaryVtx() const { return (((AliAODVertex)fSecondaryVtx.GetObject()) ? (AliAODVertex)fSecondaryVtx.GetObject() : GetOwnSecondaryVtx()); }
	42	void SetOwnSecondaryVtx(AliAODVertex *vtx2) {fOwnSecondaryVtx=vtx2;}
	43	AliAODVertex* GetOwnSecondaryVtx() const {return fOwnSecondaryVtx;}
7de7497b	44	void GetSecondaryVtx(Double_t vtx[3]) const;
5cc73331	45	Double_t GetReducedChi2() const {return GetSecondaryVtx()->GetChi2perNDF();}
7de7497b	46	Short_t Charge() const {return fCharge;}
	47	Short_t GetCharge() const {return fCharge;}
	48	void SetCharge(Short_t charge=0) {fCharge=charge;}
	49
bfd68286	50	// Match to MC signal:
	51	// check if this candidate is matched to a MC signal
	52	// If no, return -1
	53	// If yes, return label (>=0) of the AliAODMCParticle
	54	Int_t MatchToMC(Int_t pdgabs,TClonesArray *mcArray) const;
bfd68286	55
7de7497b	56	// PID
	57	void SetPID(Int_t nprongs,Double_t *pid);
	58	Double_t *GetPID() const { return fPID; }
	59	void GetPIDProng(Int_t ip,Double_t *pid) const;
	60	virtual const Double_t *PID() const { return fPID; }
	61
	62	// prong-to-prong DCAs
5cc73331	63	void SetDCAs(Int_t nDCA,Double_t *dca);
	64	void SetDCA(Double_t dca); // 2 prong
	65	Double_t GetDCA(Int_t i=0) const {return fDCA[i];}
7de7497b	66
	67	//event and run number
	68	void SetEventRunNumbers(Int_t en,Int_t rn)
	69	{ fEventNumber=en; fRunNumber=rn; return; }
	70	Int_t GetEventNumber() const { return fEventNumber; }
	71	Int_t GetRunNumber() const { return fRunNumber; }
	72
e045ffda	73	// methods of AliVTrack
	74	virtual Int_t GetID() const { return -1; }
	75	virtual UChar_t GetITSClusterMap() const;
	76	virtual ULong_t GetStatus() const;
	77	virtual Bool_t GetXYZ(Double_t *p) const { return XvYvZv(p); }
	78	virtual Bool_t GetCovarianceXYZPxPyPz(Double_t cv[21]) const;
	79
7de7497b	80	// kinematics & topology
	81	Double_t Px() const;
	82	Double_t Py() const;
	83	Double_t Pz() const;
	84	Double_t P() const {return TMath::Sqrt(Px()Px()+Py()Py()+Pz()*Pz());}
	85	Double_t Pt() const {return TMath::Sqrt(Px()Px()+Py()Py());}
	86	Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);}
c683ddc2	87	Bool_t PxPyPz(Double_t p[3]) const { p[0] = Px(); p[1] = Py(); p[2] = Pz(); return kTRUE; }
1eab4b5c	88	Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());}
7de7497b	89	Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));}
7de7497b	90	Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));}
c683ddc2	91	Double_t Xv() const { return GetSecVtxX(); }
	92	Double_t Yv() const { return GetSecVtxY(); }
	93	Double_t Zv() const { return GetSecVtxZ(); }
	94	virtual Bool_t XvYvZv(Double_t x[3]) const { x[0] = Xv(); x[1] = Yv(); x[2] = Zv(); return kTRUE; }
7de7497b	95	Double_t E(UInt_t pdg) const;
	96	Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));}
	97	Double_t DecayLength(Double_t point[3]) const;
	98	Double_t DecayLength(AliAODVertex *vtx1) const
5cc73331	99	{return GetSecondaryVtx()->DistanceToVertex(vtx1);}
7de7497b	100	Double_t DecayLengthError(AliAODVertex *vtx1) const
5cc73331	101	{return GetSecondaryVtx()->ErrorDistanceToVertex(vtx1);}
7de7497b	102	Double_t NormalizedDecayLength(AliAODVertex *vtx1) const
	103	{return DecayLength(vtx1)/DecayLengthError(vtx1);}
	104	Double_t DecayLengthXY(Double_t point[3]) const;
	105	Double_t DecayLengthXY(AliAODVertex *vtx1) const
5cc73331	106	{return GetSecondaryVtx()->DistanceXYToVertex(vtx1);}
7de7497b	107	Double_t DecayLengthXYError(AliAODVertex *vtx1) const
5cc73331	108	{return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);}
7de7497b	109	Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const
	110	{return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);}
	111	Double_t Ct(UInt_t pdg,Double_t point[3]) const;
	112	Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const;
	113	Double_t CosPointingAngle(Double_t point[3]) const;
	114	Double_t CosPointingAngle(AliAODVertex *vtx1) const;
	115	Double_t CosPointingAngleXY(Double_t point[3]) const;
	116	Double_t CosPointingAngleXY(AliAODVertex *vtx1) const;
	117	Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const;
	118	Double_t InvMass(Int_t npdg,UInt_t *pdg) const;
	119	Double_t ImpParXY(Double_t point[3]) const;
	120	Double_t ImpParXY(AliAODVertex *vtx1) const;
	121
	122	// prongs
e045ffda	123	Int_t GetNProngs() const {return fNProngs;}
	124	Int_t GetNDaughters() const {return GetSecondaryVtx()->GetNDaughters();}
	125	TObject *GetDaughter(Int_t i) const {return (GetNDaughters()>i ? GetSecondaryVtx()->GetDaughter(i) : 0x0);}
7de7497b	126
e045ffda	127	Short_t ChargeProng(Int_t ip) const;
7de7497b	128	Double_t Getd0Prong(Int_t ip) const {return fd0[ip];}
	129	Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];}
	130	Double_t PxProng(Int_t ip) const {return fPx[ip];}
	131	Double_t PyProng(Int_t ip) const {return fPy[ip];}
	132	Double_t PzProng(Int_t ip) const {return fPz[ip];}
	133	Double_t PtProng(Int_t ip) const;
	134	Double_t PProng(Int_t ip) const;
	135	Double_t PhiProng(Int_t ip) const
	136	{return TMath::ATan2(PyProng(ip),PxProng(ip));}
	137	Double_t ThetaProng(Int_t ip) const
	138	{return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));}
	139	Double_t EtaProng(Int_t ip) const
	140	{return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));}
	141	Double_t EProng(Int_t ip,UInt_t pdg) const;
	142	Double_t YProng(Int_t ip,UInt_t pdg) const
	143	{return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));}
	144	Double_t Alpha() const; // for Armenteros-Podolanski plot (V0's)
	145	Double_t QlProng(Int_t ip) const;
	146	Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's)
	147	Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const;
	148	Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
	149	Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const;
	150	Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
	151	Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const;
	152	Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const;
	153
	154	// relate to other objects
	155	//Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex
	156	//Double_t DistanceToTrack(AliAODTrack *trk) // distance to a AliAODTrack
	157
	158
	159	// print
	160	void Print(Option_t* option = "") const;
5cc73331	161	//void PrintIndices() const {GetSecondaryVtx()->PrintIndices();}
7de7497b	162
ff7c57dd	163	// dummy functions for inheritance from AliVParticle
7de7497b	164	Double_t E() const
	165	{printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;}
	166	Double_t Y() const
	167	{printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;}
	168	Double_t M() const
	169	{printf("Dummy function"); return (Double_t)-999.;}
3c43fb2b	170	Int_t GetLabel() const {return -1;}
7de7497b	171	protected:
7de7497b	172
8862e6bf	173	Int_t MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t dgLabels[10],Int_t ndg) const;
	174	Int_t MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t dgLabels[10]) const { return MatchToMC(pdgabs,mcArray,dgLabels,GetNDaughters()); }
	175
5cc73331	176	TRef fSecondaryVtx; // decay vertex
a11de4a0	177	AliAODVertex *fOwnSecondaryVtx; // temporary solution (to work outside AliAODEvent)
5cc73331	178	Short_t fCharge; // charge, use this convention for prongs charges:
	179	// if(charge== 0) even-index prongs are +
	180	// odd-index prongs are -
	181	// if(charge==+1) even-index prongs are +
	182	// odd-index prongs are -
	183	// if(charge==-1) even-index prongs are -
	184	// odd-index prongs are +
7de7497b	185
7de7497b	186	// TEMPORARY, to be removed when we do analysis on AliAODEvent
5cc73331	187	Int_t fNProngs; // number of prongs
	188	Int_t fNDCA; // number of dca's
	189	Int_t fNPID; // number of PID probabilities
	190	Double32_t *fPx; //[fNProngs] px of tracks at the vertex [GeV/c]
	191	Double32_t *fPy; //[fNProngs] py of tracks at the vertex [GeV/c]
	192	Double32_t *fPz; //[fNProngs] pz of tracks at the vertex [GeV/c]
	193	Double32_t *fd0; //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm]
	194	Double32_t *fDCA; //[fNDCA] prong-to-prong DCA [cm]
	195	// convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,...
	196	Double32_t *fPID; //[fNPID] combined pid
	197	// (combined detector response probabilities)
7de7497b	198
	199	// TEMPORARY, to be removed when we do analysis on AliAODEvent
	200	Int_t fEventNumber;
	201	Int_t fRunNumber;
	202	// TO BE PUT IN SPECIAL MC CLASS
	203	//Bool_t fSignal; // TRUE if signal, FALSE if background (for simulation)
7de7497b	204	//Int_t fTrkNum[2]; // numbers of the two decay tracks
	205	//Int_t fPdg[2]; // PDG codes of the two tracks (for sim.)
	206	//Int_t fMum[2]; // PDG codes of the mothers (for sim.)
	207
	208	//
	209
e045ffda	210	ClassDef(AliAODRecoDecay,4) // base class for AOD reconstructed decays
7de7497b	211	};
	212
	213
	214	inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const
	215	{
	216	if(fCharge==0 \|\| fCharge==+1) {
	217	if(ip%2==0) {
	218	return (Short_t)1;
	219	} else {
	220	return (Short_t)-1;
	221	}
	222	} else { // fCharge==-1
	223	if(ip%2==0) {
	224	return (Short_t)-1;
	225	} else {
	226	return (Short_t)1;
	227	}
	228	}
	229	}
	230
	231	inline Double_t AliAODRecoDecay::RadiusSecVtx() const
	232	{
	233	return TMath::Sqrt(GetSecVtxX()GetSecVtxX()+GetSecVtxY()GetSecVtxY());
	234	}
	235
	236	inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const
	237	{
5cc73331	238	GetSecondaryVtx()->GetPosition(vtx);
7de7497b	239	return;
	240	}
	241
	242	inline Double_t AliAODRecoDecay::Px() const
	243	{
	244	Double_t px=0.;
	245	for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i);
	246	return px;
	247	}
	248
	249	inline Double_t AliAODRecoDecay::Py() const
	250	{
	251	Double_t py=0.;
	252	for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i);
	253	return py;
	254	}
	255
	256	inline Double_t AliAODRecoDecay::Pz() const
	257	{
	258	Double_t pz=0.;
	259	for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i);
	260	return pz;
	261	}
	262
	263	inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const
	264	{
	265	Double_t v[3];
	266	vtx1->GetPosition(v);
	267	return Ct(pdg,v);
	268	}
	269
	270	inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const
	271	{
	272	Double_t v[3];
	273	vtx1->GetPosition(v);
	274	return CosPointingAngle(v);
	275	}
	276
	277	inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const
	278	{
	279	Double_t v[3];
	280	vtx1->GetPosition(v);
	281	return CosPointingAngleXY(v);
	282	}
	283
	284	inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const
	285	{
	286	Double_t v[3];
	287	vtx1->GetPosition(v);
	288	return ImpParXY(v);
	289	}
	290
	291	inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const
	292	{
	293	return TMath::Sqrt(PxProng(ip)PxProng(ip)+PyProng(ip)PyProng(ip));
	294	}
	295
	296	inline Double_t AliAODRecoDecay::PProng(Int_t ip) const
	297	{
	298	return TMath::Sqrt(PtProng(ip)PtProng(ip)+PzProng(ip)PzProng(ip));
	299	}
	300
	301	inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
	302	{
303	Double_t v[3];
304	vtx1->GetPosition(v);
305	return QlProngFlightLine(ip,v);
306	}
307
308	inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
309	{
310	Double_t v[3];
311	vtx1->GetPosition(v);
312	return QtProngFlightLine(ip,v);
313	}
314
5cc73331	315	inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca)
7de7497b	316	{
	317	if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) {
	318	printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2");
	319	return;
	320	}
	321	if(fDCA) delete [] fDCA;
94de4057	322	fNDCA = nDCA;
5cc73331	323	fDCA = new Double32_t[nDCA];
7de7497b	324	for(Int_t i=0;i<nDCA;i++)
	325	fDCA[i] = dca[i];
	326	return;
	327	}
	328
5cc73331	329	inline void AliAODRecoDecay::SetDCA(Double_t dca)
7de7497b	330	{
5cc73331	331	Double_t ddca[1]; ddca[0]=dca;
7de7497b	332	SetDCAs(1,ddca);
	333	return;
	334	}
	335
	336	inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid)
	337	{
	338	if(nprongs!=GetNProngs()) {
	339	printf("Wrong number of prongs");
	340	return;
	341	}
	342	if(fPID) delete [] fPID;
58b0186f	343	fNPID = nprongs*5;
5cc73331	344	fPID = new Double32_t[nprongs*5];
7de7497b	345	for(Int_t i=0;i<nprongs;i++)
	346	for(Int_t j=0;j<5;j++)
	347	fPID[i5+j] = pid[i5+j];
	348	return;
	349	}
	350
	351	inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const
	352	{
	353	for(Int_t j=0;j<5;j++)
	354	pid[j] = fPID[ip*5+j];
	355	return;
	356	}
	357
	358
	359
	360	#endif
bfd68286	361