[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 AliVVertex;

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
  // if ndgCk>0, checks also daughters PDGs
  Int_t    MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t ndgCk=0,Int_t *pdgDg=0) 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;
  virtual Bool_t   PropagateToDCA(const AliVVertex* vtx,Double_t b,Double_t maxd,Double_t dz[2],Double_t covar[3]);

  // kinematics & topology
  Double_t Px() const; 
  Double_t Py() const;
  Double_t Pz() const;
  Double_t P2() const {return Px()*Px()+Py()*Py()+Pz()*Pz();}
  Double_t Pt2() const {return Px()*Px()+Py()*Py();}
  Double_t P() const {return TMath::Sqrt(Pt2());}
  Double_t Pt() const {return TMath::Sqrt(P2());}
  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 DecayLength2(Double_t point[3]) const;
  Double_t DecayLength(Double_t point[3]) const {return TMath::Sqrt(DecayLength2(point));}
  Double_t DecayLength2(AliAODVertex *vtx1) const
  {return GetSecondaryVtx()->Distance2ToVertex(vtx1);}
  Double_t DecayLength(AliAODVertex *vtx1) const
    {return TMath::Sqrt(DecayLength2(vtx1));}
  Double_t DecayLengthError2(AliAODVertex *vtx1) const
    {return GetSecondaryVtx()->Error2DistanceToVertex(vtx1);}
  Double_t DecayLengthError(AliAODVertex *vtx1) const
    {return TMath::Sqrt(DecayLengthError2(vtx1));}
  Double_t NormalizedDecayLength2(AliAODVertex *vtx1) const 
    {return DecayLength2(vtx1)/DecayLengthError2(vtx1);}
  Double_t NormalizedDecayLength(AliAODVertex *vtx1) const 
  {return TMath::Sqrt(NormalizedDecayLength2(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];} 
  void     SetPxPyPzProngs(Int_t nprongs,Double_t *px,Double_t *py,Double_t *pz);
  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 {return TMath::Sqrt(Pt2Prong(ip));}
  Double_t Pt2Prong(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;}
  Int_t PdgCode()  const {return  0;}
  
 protected:

  Int_t    MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t dgLabels[10],Int_t ndg,Int_t ndgCk=0,Int_t *pdgDg=0) 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::Pt2Prong(Int_t ip) const 
{
  return 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::SetPxPyPzProngs(Int_t nprongs,Double_t *px,Double_t *py,Double_t *pz) 
{
  if(nprongs!=GetNProngs()) { 
    printf("Wrong number of momenta, must be nProngs");
    return;
  }
  if(!fPx) {
    fPx = new Double32_t[nprongs];
    fPy = new Double32_t[nprongs];
    fPz = new Double32_t[nprongs];
  }
  for(Int_t i=0;i<nprongs;i++) {
    fPx[i] = px[i]; 
    fPy[i] = py[i]; 
    fPz[i] = pz[i]; 
  }

  return;
}

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
6dc40b1c	19	class AliVVertex;
6dc40b1c	20
e045ffda	21	class AliAODRecoDecay : public AliVTrack {
7de7497b	22
	23	public:
	24
	25	AliAODRecoDecay();
	26	AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
	27	Double_t px,Double_t py,Double_t *pz,
	28	Double_t *d0);
	29	AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge,
	30	Double_t *d0);
	31	virtual ~AliAODRecoDecay();
	32
	33	AliAODRecoDecay(const AliAODRecoDecay& source);
	34	AliAODRecoDecay& operator=(const AliAODRecoDecay& source);
	35
	36
	37	// decay vertex
5cc73331	38	Double_t GetSecVtxX() const {return GetSecondaryVtx()->GetX();}
	39	Double_t GetSecVtxY() const {return GetSecondaryVtx()->GetY();}
	40	Double_t GetSecVtxZ() const {return GetSecondaryVtx()->GetZ();}
7de7497b	41	Double_t RadiusSecVtx() const;
7de7497b	42	void SetSecondaryVtx(AliAODVertex *vtx2) {fSecondaryVtx=vtx2;}
a11de4a0	43	AliAODVertex* GetSecondaryVtx() const { return (((AliAODVertex)fSecondaryVtx.GetObject()) ? (AliAODVertex)fSecondaryVtx.GetObject() : GetOwnSecondaryVtx()); }
	44	void SetOwnSecondaryVtx(AliAODVertex *vtx2) {fOwnSecondaryVtx=vtx2;}
	45	AliAODVertex* GetOwnSecondaryVtx() const {return fOwnSecondaryVtx;}
7de7497b	46	void GetSecondaryVtx(Double_t vtx[3]) const;
5cc73331	47	Double_t GetReducedChi2() const {return GetSecondaryVtx()->GetChi2perNDF();}
7de7497b	48	Short_t Charge() const {return fCharge;}
	49	Short_t GetCharge() const {return fCharge;}
	50	void SetCharge(Short_t charge=0) {fCharge=charge;}
	51
bfd68286	52	// Match to MC signal:
	53	// check if this candidate is matched to a MC signal
	54	// If no, return -1
	55	// If yes, return label (>=0) of the AliAODMCParticle
9c4d0454	56	// if ndgCk>0, checks also daughters PDGs
9c4d0454	57	Int_t MatchToMC(Int_t pdgabs,TClonesArray mcArray,Int_t ndgCk=0,Int_t pdgDg=0) const;
bfd68286	58
7de7497b	59	// PID
	60	void SetPID(Int_t nprongs,Double_t *pid);
	61	Double_t *GetPID() const { return fPID; }
	62	void GetPIDProng(Int_t ip,Double_t *pid) const;
	63	virtual const Double_t *PID() const { return fPID; }
	64
	65	// prong-to-prong DCAs
5cc73331	66	void SetDCAs(Int_t nDCA,Double_t *dca);
	67	void SetDCA(Double_t dca); // 2 prong
	68	Double_t GetDCA(Int_t i=0) const {return fDCA[i];}
7de7497b	69
	70	//event and run number
	71	void SetEventRunNumbers(Int_t en,Int_t rn)
	72	{ fEventNumber=en; fRunNumber=rn; return; }
	73	Int_t GetEventNumber() const { return fEventNumber; }
	74	Int_t GetRunNumber() const { return fRunNumber; }
	75
e045ffda	76	// methods of AliVTrack
	77	virtual Int_t GetID() const { return -1; }
	78	virtual UChar_t GetITSClusterMap() const;
	79	virtual ULong_t GetStatus() const;
	80	virtual Bool_t GetXYZ(Double_t *p) const { return XvYvZv(p); }
	81	virtual Bool_t GetCovarianceXYZPxPyPz(Double_t cv[21]) const;
6dc40b1c	82	virtual Bool_t PropagateToDCA(const AliVVertex* vtx,Double_t b,Double_t maxd,Double_t dz[2],Double_t covar[3]);
e045ffda	83
7de7497b	84	// kinematics & topology
	85	Double_t Px() const;
	86	Double_t Py() const;
	87	Double_t Pz() const;
6766c805	88	Double_t P2() const {return Px()Px()+Py()Py()+Pz()*Pz();}
	89	Double_t Pt2() const {return Px()Px()+Py()Py();}
	90	Double_t P() const {return TMath::Sqrt(Pt2());}
	91	Double_t Pt() const {return TMath::Sqrt(P2());}
7de7497b	92	Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);}
c683ddc2	93	Bool_t PxPyPz(Double_t p[3]) const { p[0] = Px(); p[1] = Py(); p[2] = Pz(); return kTRUE; }
1eab4b5c	94	Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());}
7de7497b	95	Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));}
7de7497b	96	Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));}
c683ddc2	97	Double_t Xv() const { return GetSecVtxX(); }
	98	Double_t Yv() const { return GetSecVtxY(); }
	99	Double_t Zv() const { return GetSecVtxZ(); }
	100	virtual Bool_t XvYvZv(Double_t x[3]) const { x[0] = Xv(); x[1] = Yv(); x[2] = Zv(); return kTRUE; }
7de7497b	101	Double_t E(UInt_t pdg) const;
7de7497b	102	Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));}
6766c805	103	Double_t DecayLength2(Double_t point[3]) const;
	104	Double_t DecayLength(Double_t point[3]) const {return TMath::Sqrt(DecayLength2(point));}
	105	Double_t DecayLength2(AliAODVertex *vtx1) const
	106	{return GetSecondaryVtx()->Distance2ToVertex(vtx1);}
7de7497b	107	Double_t DecayLength(AliAODVertex *vtx1) const
6766c805	108	{return TMath::Sqrt(DecayLength2(vtx1));}
	109	Double_t DecayLengthError2(AliAODVertex *vtx1) const
	110	{return GetSecondaryVtx()->Error2DistanceToVertex(vtx1);}
7de7497b	111	Double_t DecayLengthError(AliAODVertex *vtx1) const
6766c805	112	{return TMath::Sqrt(DecayLengthError2(vtx1));}
	113	Double_t NormalizedDecayLength2(AliAODVertex *vtx1) const
	114	{return DecayLength2(vtx1)/DecayLengthError2(vtx1);}
7de7497b	115	Double_t NormalizedDecayLength(AliAODVertex *vtx1) const
6766c805	116	{return TMath::Sqrt(NormalizedDecayLength2(vtx1));}
7de7497b	117	Double_t DecayLengthXY(Double_t point[3]) const;
7de7497b	118	Double_t DecayLengthXY(AliAODVertex *vtx1) const
5cc73331	119	{return GetSecondaryVtx()->DistanceXYToVertex(vtx1);}
7de7497b	120	Double_t DecayLengthXYError(AliAODVertex *vtx1) const
5cc73331	121	{return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);}
7de7497b	122	Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const
	123	{return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);}
	124	Double_t Ct(UInt_t pdg,Double_t point[3]) const;
	125	Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const;
	126	Double_t CosPointingAngle(Double_t point[3]) const;
	127	Double_t CosPointingAngle(AliAODVertex *vtx1) const;
	128	Double_t CosPointingAngleXY(Double_t point[3]) const;
	129	Double_t CosPointingAngleXY(AliAODVertex *vtx1) const;
	130	Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const;
	131	Double_t InvMass(Int_t npdg,UInt_t *pdg) const;
	132	Double_t ImpParXY(Double_t point[3]) const;
	133	Double_t ImpParXY(AliAODVertex *vtx1) const;
	134
	135	// prongs
e045ffda	136	Int_t GetNProngs() const {return fNProngs;}
	137	Int_t GetNDaughters() const {return GetSecondaryVtx()->GetNDaughters();}
	138	TObject *GetDaughter(Int_t i) const {return (GetNDaughters()>i ? GetSecondaryVtx()->GetDaughter(i) : 0x0);}
7de7497b	139
e045ffda	140	Short_t ChargeProng(Int_t ip) const;
7de7497b	141	Double_t Getd0Prong(Int_t ip) const {return fd0[ip];}
7de7497b	142	Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];}
88891753	143	void SetPxPyPzProngs(Int_t nprongs,Double_t px,Double_t py,Double_t *pz);
7de7497b	144	Double_t PxProng(Int_t ip) const {return fPx[ip];}
	145	Double_t PyProng(Int_t ip) const {return fPy[ip];}
	146	Double_t PzProng(Int_t ip) const {return fPz[ip];}
6766c805	147	Double_t PtProng(Int_t ip) const {return TMath::Sqrt(Pt2Prong(ip));}
6766c805	148	Double_t Pt2Prong(Int_t ip) const;
7de7497b	149	Double_t PProng(Int_t ip) const;
	150	Double_t PhiProng(Int_t ip) const
	151	{return TMath::ATan2(PyProng(ip),PxProng(ip));}
	152	Double_t ThetaProng(Int_t ip) const
	153	{return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));}
	154	Double_t EtaProng(Int_t ip) const
	155	{return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));}
	156	Double_t EProng(Int_t ip,UInt_t pdg) const;
	157	Double_t YProng(Int_t ip,UInt_t pdg) const
	158	{return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));}
	159	Double_t Alpha() const; // for Armenteros-Podolanski plot (V0's)
	160	Double_t QlProng(Int_t ip) const;
	161	Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's)
	162	Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const;
	163	Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
	164	Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const;
	165	Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const;
	166	Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const;
	167	Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const;
	168
	169	// relate to other objects
	170	//Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex
	171	//Double_t DistanceToTrack(AliAODTrack *trk) // distance to a AliAODTrack
	172
	173
	174	// print
	175	void Print(Option_t* option = "") const;
5cc73331	176	//void PrintIndices() const {GetSecondaryVtx()->PrintIndices();}
7de7497b	177
ff7c57dd	178	// dummy functions for inheritance from AliVParticle
7de7497b	179	Double_t E() const
	180	{printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;}
	181	Double_t Y() const
	182	{printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;}
	183	Double_t M() const
	184	{printf("Dummy function"); return (Double_t)-999.;}
3c43fb2b	185	Int_t GetLabel() const {return -1;}
6a8e543a	186	Int_t PdgCode() const {return 0;}
c8fe2783	187
7de7497b	188	protected:
7de7497b	189
9c4d0454	190	Int_t MatchToMC(Int_t pdgabs,TClonesArray mcArray,Int_t dgLabels[10],Int_t ndg,Int_t ndgCk=0,Int_t pdgDg=0) const;
8862e6bf	191	Int_t MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t dgLabels[10]) const { return MatchToMC(pdgabs,mcArray,dgLabels,GetNDaughters()); }
8862e6bf	192
5cc73331	193	TRef fSecondaryVtx; // decay vertex
a11de4a0	194	AliAODVertex *fOwnSecondaryVtx; // temporary solution (to work outside AliAODEvent)
5cc73331	195	Short_t fCharge; // charge, use this convention for prongs charges:
	196	// if(charge== 0) even-index prongs are +
	197	// odd-index prongs are -
	198	// if(charge==+1) even-index prongs are +
	199	// odd-index prongs are -
	200	// if(charge==-1) even-index prongs are -
	201	// odd-index prongs are +
7de7497b	202
7de7497b	203	// TEMPORARY, to be removed when we do analysis on AliAODEvent
5cc73331	204	Int_t fNProngs; // number of prongs
	205	Int_t fNDCA; // number of dca's
	206	Int_t fNPID; // number of PID probabilities
	207	Double32_t *fPx; //[fNProngs] px of tracks at the vertex [GeV/c]
	208	Double32_t *fPy; //[fNProngs] py of tracks at the vertex [GeV/c]
	209	Double32_t *fPz; //[fNProngs] pz of tracks at the vertex [GeV/c]
	210	Double32_t *fd0; //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm]
	211	Double32_t *fDCA; //[fNDCA] prong-to-prong DCA [cm]
	212	// convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,...
	213	Double32_t *fPID; //[fNPID] combined pid
	214	// (combined detector response probabilities)
7de7497b	215
	216	// TEMPORARY, to be removed when we do analysis on AliAODEvent
	217	Int_t fEventNumber;
	218	Int_t fRunNumber;
	219	// TO BE PUT IN SPECIAL MC CLASS
	220	//Bool_t fSignal; // TRUE if signal, FALSE if background (for simulation)
7de7497b	221	//Int_t fTrkNum[2]; // numbers of the two decay tracks
	222	//Int_t fPdg[2]; // PDG codes of the two tracks (for sim.)
	223	//Int_t fMum[2]; // PDG codes of the mothers (for sim.)
	224
	225	//
	226
e045ffda	227	ClassDef(AliAODRecoDecay,4) // base class for AOD reconstructed decays
7de7497b	228	};
	229
	230
	231	inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const
	232	{
	233	if(fCharge==0 \|\| fCharge==+1) {
	234	if(ip%2==0) {
	235	return (Short_t)1;
	236	} else {
	237	return (Short_t)-1;
	238	}
	239	} else { // fCharge==-1
	240	if(ip%2==0) {
	241	return (Short_t)-1;
	242	} else {
	243	return (Short_t)1;
	244	}
	245	}
	246	}
	247
	248	inline Double_t AliAODRecoDecay::RadiusSecVtx() const
	249	{
	250	return TMath::Sqrt(GetSecVtxX()GetSecVtxX()+GetSecVtxY()GetSecVtxY());
	251	}
	252
	253	inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const
	254	{
5cc73331	255	GetSecondaryVtx()->GetPosition(vtx);
7de7497b	256	return;
	257	}
	258
	259	inline Double_t AliAODRecoDecay::Px() const
	260	{
	261	Double_t px=0.;
	262	for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i);
	263	return px;
	264	}
	265
	266	inline Double_t AliAODRecoDecay::Py() const
	267	{
	268	Double_t py=0.;
	269	for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i);
	270	return py;
	271	}
	272
	273	inline Double_t AliAODRecoDecay::Pz() const
	274	{
	275	Double_t pz=0.;
	276	for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i);
	277	return pz;
	278	}
	279
	280	inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const
	281	{
	282	Double_t v[3];
	283	vtx1->GetPosition(v);
	284	return Ct(pdg,v);
	285	}
	286
	287	inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const
	288	{
	289	Double_t v[3];
	290	vtx1->GetPosition(v);
	291	return CosPointingAngle(v);
	292	}
	293
	294	inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const
	295	{
	296	Double_t v[3];
	297	vtx1->GetPosition(v);
	298	return CosPointingAngleXY(v);
	299	}
	300
	301	inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const
	302	{
	303	Double_t v[3];
	304	vtx1->GetPosition(v);
	305	return ImpParXY(v);
	306	}
	307
6766c805	308	inline Double_t AliAODRecoDecay::Pt2Prong(Int_t ip) const
7de7497b	309	{
6766c805	310	return PxProng(ip)PxProng(ip)+PyProng(ip)PyProng(ip);
7de7497b	311	}
	312
	313	inline Double_t AliAODRecoDecay::PProng(Int_t ip) const
	314	{
	315	return TMath::Sqrt(PtProng(ip)PtProng(ip)+PzProng(ip)PzProng(ip));
	316	}
	317
	318	inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
	319	{
	320	Double_t v[3];
	321	vtx1->GetPosition(v);
	322	return QlProngFlightLine(ip,v);
	323	}
	324
	325	inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const
	326	{
	327	Double_t v[3];
	328	vtx1->GetPosition(v);
	329	return QtProngFlightLine(ip,v);
	330	}
	331
88891753	332	inline void AliAODRecoDecay::SetPxPyPzProngs(Int_t nprongs,Double_t px,Double_t py,Double_t *pz)
	333	{
	334	if(nprongs!=GetNProngs()) {
	335	printf("Wrong number of momenta, must be nProngs");
	336	return;
	337	}
	338	if(!fPx) {
	339	fPx = new Double32_t[nprongs];
	340	fPy = new Double32_t[nprongs];
	341	fPz = new Double32_t[nprongs];
	342	}
	343	for(Int_t i=0;i<nprongs;i++) {
	344	fPx[i] = px[i];
	345	fPy[i] = py[i];
	346	fPz[i] = pz[i];
	347	}
	348
	349	return;
	350	}
	351
5cc73331	352	inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca)
7de7497b	353	{
	354	if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) {
	355	printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2");
	356	return;
	357	}
	358	if(fDCA) delete [] fDCA;
94de4057	359	fNDCA = nDCA;
5cc73331	360	fDCA = new Double32_t[nDCA];
7de7497b	361	for(Int_t i=0;i<nDCA;i++)
	362	fDCA[i] = dca[i];
	363	return;
	364	}
	365
5cc73331	366	inline void AliAODRecoDecay::SetDCA(Double_t dca)
7de7497b	367	{
5cc73331	368	Double_t ddca[1]; ddca[0]=dca;
7de7497b	369	SetDCAs(1,ddca);
	370	return;
	371	}
	372
	373	inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid)
	374	{
	375	if(nprongs!=GetNProngs()) {
	376	printf("Wrong number of prongs");
	377	return;
	378	}
	379	if(fPID) delete [] fPID;
58b0186f	380	fNPID = nprongs*5;
5cc73331	381	fPID = new Double32_t[nprongs*5];
7de7497b	382	for(Int_t i=0;i<nprongs;i++)
	383	for(Int_t j=0;j<5;j++)
	384	fPID[i5+j] = pid[i5+j];
	385	return;
	386	}
	387
	388	inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const
	389	{
	390	for(Int_t j=0;j<5;j++)
	391	pid[j] = fPID[ip*5+j];
	392	return;
	393	}
	394
	395
	396
	397	#endif
bfd68286	398