[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 "AliAODVertex.h"
#include "AliAODTrack.h"
#include "AliVParticle.h"

class AliAODRecoDecay : public AliVParticle {

 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;}

  // 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; }

  // 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 GetSecondaryVtx()->GetNDaughters();}
  Int_t   GetNProngs() const {return fNProngs;}
  TObject *GetDaughter(Int_t i) const {return GetSecondaryVtx()->GetDaughter(i);}

  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:

  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,3)  // 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>
7de7497b	14	#include "AliAODVertex.h"
58b0186f	15	#include "AliAODTrack.h"
ff7c57dd	16	#include "AliVParticle.h"
7de7497b	17
ff7c57dd	18	class AliAODRecoDecay : public AliVParticle {
7de7497b	19
	20	public:
	21
	22	AliAODRecoDecay();
	23	AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
	24	Double_t px,Double_t py,Double_t *pz,
	25	Double_t *d0);
	26	AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
	27	Double_t *d0);
	28	virtual ~AliAODRecoDecay();
	29
	30	AliAODRecoDecay(const AliAODRecoDecay& source);
	31	AliAODRecoDecay& operator=(const AliAODRecoDecay& source);
	32
	33
	34	// decay vertex
5cc73331	35	Double_t GetSecVtxX() const {return GetSecondaryVtx()->GetX();}
	36	Double_t GetSecVtxY() const {return GetSecondaryVtx()->GetY();}
	37	Double_t GetSecVtxZ() const {return GetSecondaryVtx()->GetZ();}
7de7497b	38	Double_t RadiusSecVtx() const;
7de7497b	39	void SetSecondaryVtx(AliAODVertex *vtx2) {fSecondaryVtx=vtx2;}
a11de4a0	40	AliAODVertex* GetSecondaryVtx() const { return (((AliAODVertex)fSecondaryVtx.GetObject()) ? (AliAODVertex)fSecondaryVtx.GetObject() : GetOwnSecondaryVtx()); }
	41	void SetOwnSecondaryVtx(AliAODVertex *vtx2) {fOwnSecondaryVtx=vtx2;}
	42	AliAODVertex* GetOwnSecondaryVtx() const {return fOwnSecondaryVtx;}
7de7497b	43	void GetSecondaryVtx(Double_t vtx[3]) const;
5cc73331	44	Double_t GetReducedChi2() const {return GetSecondaryVtx()->GetChi2perNDF();}
7de7497b	45	Short_t Charge() const {return fCharge;}
	46	Short_t GetCharge() const {return fCharge;}
	47	void SetCharge(Short_t charge=0) {fCharge=charge;}
	48
	49	// PID
	50	void SetPID(Int_t nprongs,Double_t *pid);
	51	Double_t *GetPID() const { return fPID; }
	52	void GetPIDProng(Int_t ip,Double_t *pid) const;
	53	virtual const Double_t *PID() const { return fPID; }
	54
	55	// prong-to-prong DCAs
5cc73331	56	void SetDCAs(Int_t nDCA,Double_t *dca);
	57	void SetDCA(Double_t dca); // 2 prong
	58	Double_t GetDCA(Int_t i=0) const {return fDCA[i];}
7de7497b	59
	60	//event and run number
	61	void SetEventRunNumbers(Int_t en,Int_t rn)
	62	{ fEventNumber=en; fRunNumber=rn; return; }
	63	Int_t GetEventNumber() const { return fEventNumber; }
	64	Int_t GetRunNumber() const { return fRunNumber; }
	65
	66	// kinematics & topology
	67	Double_t Px() const;
	68	Double_t Py() const;
	69	Double_t Pz() const;
	70	Double_t P() const {return TMath::Sqrt(Px()Px()+Py()Py()+Pz()*Pz());}
	71	Double_t Pt() const {return TMath::Sqrt(Px()Px()+Py()Py());}
	72	Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);}
c683ddc2	73	Bool_t PxPyPz(Double_t p[3]) const { p[0] = Px(); p[1] = Py(); p[2] = Pz(); return kTRUE; }
1eab4b5c	74	Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());}
7de7497b	75	Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));}
7de7497b	76	Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));}
c683ddc2	77	Double_t Xv() const { return GetSecVtxX(); }
	78	Double_t Yv() const { return GetSecVtxY(); }
	79	Double_t Zv() const { return GetSecVtxZ(); }
	80	virtual Bool_t XvYvZv(Double_t x[3]) const { x[0] = Xv(); x[1] = Yv(); x[2] = Zv(); return kTRUE; }
7de7497b	81	Double_t E(UInt_t pdg) const;
	82	Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));}
	83	Double_t DecayLength(Double_t point[3]) const;
	84	Double_t DecayLength(AliAODVertex *vtx1) const
5cc73331	85	{return GetSecondaryVtx()->DistanceToVertex(vtx1);}
7de7497b	86	Double_t DecayLengthError(AliAODVertex *vtx1) const
5cc73331	87	{return GetSecondaryVtx()->ErrorDistanceToVertex(vtx1);}
7de7497b	88	Double_t NormalizedDecayLength(AliAODVertex *vtx1) const
	89	{return DecayLength(vtx1)/DecayLengthError(vtx1);}
	90	Double_t DecayLengthXY(Double_t point[3]) const;
	91	Double_t DecayLengthXY(AliAODVertex *vtx1) const
5cc73331	92	{return GetSecondaryVtx()->DistanceXYToVertex(vtx1);}
7de7497b	93	Double_t DecayLengthXYError(AliAODVertex *vtx1) const
5cc73331	94	{return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);}
7de7497b	95	Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const
	96	{return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);}
	97	Double_t Ct(UInt_t pdg,Double_t point[3]) const;
	98	Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const;
	99	Double_t CosPointingAngle(Double_t point[3]) const;
	100	Double_t CosPointingAngle(AliAODVertex *vtx1) const;
	101	Double_t CosPointingAngleXY(Double_t point[3]) const;
	102	Double_t CosPointingAngleXY(AliAODVertex *vtx1) const;
	103	Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const;
	104	Double_t InvMass(Int_t npdg,UInt_t *pdg) const;
	105	Double_t ImpParXY(Double_t point[3]) const;
	106	Double_t ImpParXY(AliAODVertex *vtx1) const;
	107
	108	// prongs
5cc73331	109	//Int_t GetNProngs() const {return GetSecondaryVtx()->GetNDaughters();}
7de7497b	110	Int_t GetNProngs() const {return fNProngs;}
58b0186f	111	TObject *GetDaughter(Int_t i) const {return GetSecondaryVtx()->GetDaughter(i);}
7de7497b	112
	113	Short_t ChargeProng(Int_t ip) const;
	114	Double_t Getd0Prong(Int_t ip) const {return fd0[ip];}
	115	Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];}
	116	Double_t PxProng(Int_t ip) const {return fPx[ip];}
	117	Double_t PyProng(Int_t ip) const {return fPy[ip];}
	118	Double_t PzProng(Int_t ip) const {return fPz[ip];}
	119	Double_t PtProng(Int_t ip) const;
	120	Double_t PProng(Int_t ip) const;
	121	Double_t PhiProng(Int_t ip) const
	122	{return TMath::ATan2(PyProng(ip),PxProng(ip));}
	123	Double_t ThetaProng(Int_t ip) const
	124	{return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));}
	125	Double_t EtaProng(Int_t ip) const
	126	{return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));}
	127	Double_t EProng(Int_t ip,UInt_t pdg) const;
	128	Double_t YProng(Int_t ip,UInt_t pdg) const
	129	{return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));}
	130	Double_t Alpha() const; // for Armenteros-Podolanski plot (V0's)
	131	Double_t QlProng(Int_t ip) const;
	132	Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's)
	133	Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const;
	134	Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
	135	Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const;
	136	Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
	137	Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const;
	138	Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const;
	139
	140	// relate to other objects
	141	//Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex
	142	//Double_t DistanceToTrack(AliAODTrack *trk) // distance to a AliAODTrack
	143
	144
	145	// print
	146	void Print(Option_t* option = "") const;
5cc73331	147	//void PrintIndices() const {GetSecondaryVtx()->PrintIndices();}
7de7497b	148
ff7c57dd	149	// dummy functions for inheritance from AliVParticle
7de7497b	150	Double_t E() const
	151	{printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;}
	152	Double_t Y() const
	153	{printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;}
	154	Double_t M() const
	155	{printf("Dummy function"); return (Double_t)-999.;}
3c43fb2b	156	Int_t GetLabel() const {return -1;}
7de7497b	157	protected:
7de7497b	158
5cc73331	159	TRef fSecondaryVtx; // decay vertex
a11de4a0	160	AliAODVertex *fOwnSecondaryVtx; // temporary solution (to work outside AliAODEvent)
5cc73331	161	Short_t fCharge; // charge, use this convention for prongs charges:
	162	// if(charge== 0) even-index prongs are +
	163	// odd-index prongs are -
	164	// if(charge==+1) even-index prongs are +
	165	// odd-index prongs are -
	166	// if(charge==-1) even-index prongs are -
	167	// odd-index prongs are +
7de7497b	168
7de7497b	169	// TEMPORARY, to be removed when we do analysis on AliAODEvent
5cc73331	170	Int_t fNProngs; // number of prongs
	171	Int_t fNDCA; // number of dca's
	172	Int_t fNPID; // number of PID probabilities
	173	Double32_t *fPx; //[fNProngs] px of tracks at the vertex [GeV/c]
	174	Double32_t *fPy; //[fNProngs] py of tracks at the vertex [GeV/c]
	175	Double32_t *fPz; //[fNProngs] pz of tracks at the vertex [GeV/c]
	176	Double32_t *fd0; //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm]
	177	Double32_t *fDCA; //[fNDCA] prong-to-prong DCA [cm]
	178	// convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,...
	179	Double32_t *fPID; //[fNPID] combined pid
	180	// (combined detector response probabilities)
7de7497b	181
	182	// TEMPORARY, to be removed when we do analysis on AliAODEvent
	183	Int_t fEventNumber;
	184	Int_t fRunNumber;
	185	// TO BE PUT IN SPECIAL MC CLASS
	186	//Bool_t fSignal; // TRUE if signal, FALSE if background (for simulation)
7de7497b	187	//Int_t fTrkNum[2]; // numbers of the two decay tracks
	188	//Int_t fPdg[2]; // PDG codes of the two tracks (for sim.)
	189	//Int_t fMum[2]; // PDG codes of the mothers (for sim.)
	190
	191	//
	192
0fc99302	193	ClassDef(AliAODRecoDecay,3) // base class for AOD reconstructed decays
7de7497b	194	};
	195
	196
	197	inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const
	198	{
	199	if(fCharge==0 \|\| fCharge==+1) {
	200	if(ip%2==0) {
	201	return (Short_t)1;
	202	} else {
	203	return (Short_t)-1;
	204	}
	205	} else { // fCharge==-1
	206	if(ip%2==0) {
	207	return (Short_t)-1;
	208	} else {
	209	return (Short_t)1;
	210	}
	211	}
	212	}
	213
	214	inline Double_t AliAODRecoDecay::RadiusSecVtx() const
	215	{
	216	return TMath::Sqrt(GetSecVtxX()GetSecVtxX()+GetSecVtxY()GetSecVtxY());
	217	}
	218
	219	inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const
	220	{
5cc73331	221	GetSecondaryVtx()->GetPosition(vtx);
7de7497b	222	return;
	223	}
	224
	225	inline Double_t AliAODRecoDecay::Px() const
	226	{
	227	Double_t px=0.;
	228	for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i);
	229	return px;
	230	}
	231
	232	inline Double_t AliAODRecoDecay::Py() const
	233	{
	234	Double_t py=0.;
	235	for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i);
	236	return py;
	237	}
	238
	239	inline Double_t AliAODRecoDecay::Pz() const
	240	{
	241	Double_t pz=0.;
	242	for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i);
	243	return pz;
	244	}
	245
	246	inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const
	247	{
	248	Double_t v[3];
	249	vtx1->GetPosition(v);
	250	return Ct(pdg,v);
	251	}
	252
	253	inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const
	254	{
	255	Double_t v[3];
	256	vtx1->GetPosition(v);
	257	return CosPointingAngle(v);
	258	}
	259
	260	inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const
	261	{
	262	Double_t v[3];
	263	vtx1->GetPosition(v);
	264	return CosPointingAngleXY(v);
	265	}
	266
	267	inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const
	268	{
	269	Double_t v[3];
	270	vtx1->GetPosition(v);
	271	return ImpParXY(v);
	272	}
	273
	274	inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const
	275	{
	276	return TMath::Sqrt(PxProng(ip)PxProng(ip)+PyProng(ip)PyProng(ip));
	277	}
	278
	279	inline Double_t AliAODRecoDecay::PProng(Int_t ip) const
	280	{
	281	return TMath::Sqrt(PtProng(ip)PtProng(ip)+PzProng(ip)PzProng(ip));
	282	}
	283
	284	inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
	285	{
286	Double_t v[3];
287	vtx1->GetPosition(v);
288	return QlProngFlightLine(ip,v);
289	}
290
291	inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
292	{
293	Double_t v[3];
294	vtx1->GetPosition(v);
295	return QtProngFlightLine(ip,v);
296	}
297
5cc73331	298	inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca)
7de7497b	299	{
	300	if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) {
	301	printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2");
	302	return;
	303	}
	304	if(fDCA) delete [] fDCA;
94de4057	305	fNDCA = nDCA;
5cc73331	306	fDCA = new Double32_t[nDCA];
7de7497b	307	for(Int_t i=0;i<nDCA;i++)
	308	fDCA[i] = dca[i];
	309	return;
	310	}
	311
5cc73331	312	inline void AliAODRecoDecay::SetDCA(Double_t dca)
7de7497b	313	{
5cc73331	314	Double_t ddca[1]; ddca[0]=dca;
7de7497b	315	SetDCAs(1,ddca);
	316	return;
	317	}
	318
	319	inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid)
	320	{
	321	if(nprongs!=GetNProngs()) {
	322	printf("Wrong number of prongs");
	323	return;
	324	}
	325	if(fPID) delete [] fPID;
58b0186f	326	fNPID = nprongs*5;
5cc73331	327	fPID = new Double32_t[nprongs*5];
7de7497b	328	for(Int_t i=0;i<nprongs;i++)
	329	for(Int_t j=0;j<5;j++)
	330	fPID[i5+j] = pid[i5+j];
	331	return;
	332	}
	333
	334	inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const
	335	{
	336	for(Int_t j=0;j<5;j++)
	337	pid[j] = fPID[ip*5+j];
	338	return;
	339	}
	340
	341
	342
	343	#endif