[u/mrichter/AliRoot.git] / HBTAN / AliHBTParticle.h

#ifndef ALIHBTPARTICLE_H
#define ALIHBTPARTICLE_H
//___________________________________________________________
/////////////////////////////////////////////////////////////
//
// class AliHBTParticle
//
// Ali HBT Particle: simplified class TParticle
// Simplified in order to minimize the size of object
//  - we want to keep a lot of such a objects in memory
// Additionaly adjusted for HBT Analysies purposes
// + pointer to Track Points
// + pointer to Cluster Map(s)
//
// Piotr.Skowronski@cern.ch
//
/////////////////////////////////////////////////////////////

#include <TObject.h>
#include <TLorentzVector.h>
#include <TMath.h>
#include <TDatabasePDG.h>


class TParticle;
class AliHBTTrackPoints;
class AliHBTClusterMap;

class AliHBTParticle : public TObject
{
public:
                                // ****** constructors and destructor
  AliHBTParticle();
  AliHBTParticle(const AliHBTParticle& in); 
 
  AliHBTParticle(Int_t pdg, Int_t idx, Double_t px, Double_t py, Double_t pz, Double_t etot,
                 Double_t vx, Double_t vy, Double_t vz, Double_t time);

  AliHBTParticle(Int_t pdg, Float_t prob, Int_t idx, Double_t px, Double_t py, Double_t pz, Double_t etot,
                 Double_t vx, Double_t vy, Double_t vz, Double_t time);

  AliHBTParticle(const TParticle& p,Int_t idx);

  virtual ~AliHBTParticle();
  
  AliHBTParticle& operator=(const AliHBTParticle& in); 
  
  void           SetPIDprobability(Int_t pdg, Float_t prob = 1.0);
  Float_t        GetPIDprobability(Int_t pdg) const;
  
  Int_t          GetPdgCode      () const { return (fPids)?fPids[fPdgIdx]:0;}
  Int_t          GetPid          () const { return GetPdgCode();}
  Float_t        GetPidProb      () const { return (fPidProb)?fPidProb[fPdgIdx]:0;}
  
  Int_t          GetUID          () const { return fIdxInEvent;}
  Int_t          GetNumberOfPids () const { return fNPids;}
  Int_t          GetNthPid         (Int_t idx) const;
  Float_t        GetNthPidProb     (Int_t idx) const;
      
  void           SetPdgCode(Int_t pdg, Float_t prob = 1.0);
  Double_t       GetCalcMass     () const { return fCalcMass; }
  Double_t       GetMass         ()       { return (GetPDG())?GetPDG()->Mass():-1.;}

  TParticlePDG*  GetPDG          (){return TDatabasePDG::Instance()->GetParticle(GetPdgCode());}

  Int_t          Beauty          ()  { return GetPDG()->Beauty(); }
  Int_t          Charm           ()  { return GetPDG()->Charm(); }
  Int_t          Strangeness     ()  { return GetPDG()->Strangeness();}
  void ProductionVertex(TLorentzVector &v) const { v.SetXYZT(fVx,fVy,fVz,fVt);}


  Double_t         Vx    () const { return fVx;}
  Double_t         Vy    () const { return fVy;}
  Double_t         Vz    () const { return fVz;}
  Double_t         T     () const { return fVt;}

  Double_t         Px    () const { return fPx; } //X coordinate of the momentum
  Double_t         Py    () const { return fPy; } //Y coordinate of the momentum
  Double_t         Pz    () const { return fPz; } //Z coordinate of the momentum
  Double_t         P     () const                 //momentum
    { return TMath::Sqrt(fPx*fPx+fPy*fPy+fPz*fPz); }
  
  void Momentum(TLorentzVector &v) const { v.SetPxPyPzE(fPx,fPy,fPz,fE);}
    
  Double_t         Pt    () const  //transverse momentum
    { return TMath::Sqrt(fPx*fPx+fPy*fPy); }
  Double_t         Energy() const { return fE; }
  
                                   //Pseudo Rapidity
  Double_t         Eta   () const { if (P() != fPz) return 0.5*TMath::Log((P()+fPz)/(P()-fPz)); 
                                    else return 1.e30;}

                                   //Rapidity
  Double_t         Y     () const { if (fE  != fPz) return 0.5*TMath::Log((fE+fPz)/(fE-fPz));
                                    else return 1.e30;}

  Double_t         Phi   () const { return TMath::Pi()+TMath::ATan2(-fPy,-fPx); }

  Double_t         Theta () const { return (fPz==0)?TMath::PiOver2():TMath::ACos(fPz/P()); }

  // setters

  void           SetMomentum(Double_t px, Double_t py, Double_t pz, Double_t e)
                             {fPx=px; fPy=py; fPz=pz; fE=e;}
  void           SetMomentum(const TLorentzVector& p)
                             {SetMomentum(p.Px(),p.Py(),p.Pz(),p.Energy());}

  void           SetProductionVertex(Double_t vx, Double_t vy, Double_t vz, Double_t t)
                             {fVx=vx; fVy=vy; fVz=vz; fVt=t;}
  void           SetProductionVertex(const TLorentzVector& v)
                             {SetProductionVertex(v.X(),v.Y(),v.Z(),v.T());}
  void           SetCalcMass(Double_t mass) {fCalcMass = mass;}
  
  void           SetUID(Int_t id){fIdxInEvent = id;}
  
  const Char_t*  GetName() const; 
  void           Print() const;
  
  void           SetTrackPoints(AliHBTTrackPoints* tpts){fTrackPoints = tpts;}
  AliHBTTrackPoints* GetTrackPoints() const {return fTrackPoints;}
  void           SetClusterMap(AliHBTClusterMap* cm){fClusterMap = cm;}
  AliHBTClusterMap* GetClusterMap() const {return fClusterMap;}
  
  static void    SetDebug(Int_t dbg=1){fgDebug=dbg;}
  static Int_t   GetDebug(){return fgDebug;}
  
protected:
  Int_t          GetPidSlot(Int_t pdg) const;//returns position of the given PID in fPids (and fPidProb) array.

private:
  Char_t         fPdgIdx;               // index of PDG code of the particle in fPids
  Int_t          fIdxInEvent;           // index of a particle: the same particle can appear in the event
                                        //  many times with different pid's. Idx allows to check that they are the same particles
  Int_t          fNPids;                // number of non-zero proboble Pids
  Int_t         *fPids;                 // [fNPids] Array with PIDs
  Float_t       *fPidProb;              // [fNPids] PIDs probabilities
  Double_t       fCalcMass;             // Calculated mass

  Double_t       fPx;                   // x component of momentum
  Double_t       fPy;                   // y component of momentum
  Double_t       fPz;                   // z component of momentum
  Double_t       fE;                    // Energy

  Double_t       fVx;                   // x of production vertex
  Double_t       fVy;                   // y of production vertex
  Double_t       fVz;                   // z of production vertex
  Double_t       fVt;                   // t of production vertex

  AliHBTTrackPoints* fTrackPoints;      // track positions along trajectory - used by anti-merging cut
  AliHBTClusterMap*  fClusterMap;       // bit map of cluters occupation; 1 if has cluter on given layer/padrow/...
    
  static Int_t   fgDebug; //debug printout level
  ClassDef(AliHBTParticle,3)  // TParticle vertex particle information
};

#endif
Commit	Line	Data
37e71815	1	#ifndef ALIHBTPARTICLE_H
37e71815	2	#define ALIHBTPARTICLE_H
bfb09ece	3	//___________________________________________________________
	4	/////////////////////////////////////////////////////////////
	5	//
	6	// class AliHBTParticle
	7	//
	8	// Ali HBT Particle: simplified class TParticle
	9	// Simplified in order to minimize the size of object
1b446896	10	// - we want to keep a lot of such a objects in memory
bfb09ece	11	// Additionaly adjusted for HBT Analysies purposes
37e71815	12	// + pointer to Track Points
	13	// + pointer to Cluster Map(s)
	14	//
	15	// Piotr.Skowronski@cern.ch
bfb09ece	16	//
bfb09ece	17	/////////////////////////////////////////////////////////////
1b446896	18
	19	#include <TObject.h>
	20	#include <TLorentzVector.h>
	21	#include <TMath.h>
	22	#include <TDatabasePDG.h>
	23
829f5c7c	24
1b446896	25	class TParticle;
f5de2f09	26	class AliHBTTrackPoints;
66d1d1a4	27	class AliHBTClusterMap;
1b446896	28
	29	class AliHBTParticle : public TObject
	30	{
1b446896	31	public:
	32	// ****** constructors and destructor
	33	AliHBTParticle();
8089a083	34	AliHBTParticle(const AliHBTParticle& in);
	35
	36	AliHBTParticle(Int_t pdg, Int_t idx, Double_t px, Double_t py, Double_t pz, Double_t etot,
	37	Double_t vx, Double_t vy, Double_t vz, Double_t time);
1b446896	38
8089a083	39	AliHBTParticle(Int_t pdg, Float_t prob, Int_t idx, Double_t px, Double_t py, Double_t pz, Double_t etot,
1b446896	40	Double_t vx, Double_t vy, Double_t vz, Double_t time);
1b446896	41
8089a083	42	AliHBTParticle(const TParticle& p,Int_t idx);
1b446896	43
bed069a4	44	virtual ~AliHBTParticle();
	45
	46	AliHBTParticle& operator=(const AliHBTParticle& in);
	47
8089a083	48	void SetPIDprobability(Int_t pdg, Float_t prob = 1.0);
37e71815	49	Float_t GetPIDprobability(Int_t pdg) const;
8089a083	50
	51	Int_t GetPdgCode () const { return (fPids)?fPids[fPdgIdx]:0;}
	52	Int_t GetPid () const { return GetPdgCode();}
	53	Float_t GetPidProb () const { return (fPidProb)?fPidProb[fPdgIdx]:0;}
	54
	55	Int_t GetUID () const { return fIdxInEvent;}
e665964c	56	Int_t GetNumberOfPids () const { return fNPids;}
	57	Int_t GetNthPid (Int_t idx) const;
	58	Float_t GetNthPidProb (Int_t idx) const;
	59
8089a083	60	void SetPdgCode(Int_t pdg, Float_t prob = 1.0);
1b446896	61	Double_t GetCalcMass () const { return fCalcMass; }
8089a083	62	Double_t GetMass () { return (GetPDG())?GetPDG()->Mass():-1.;}
1b446896	63
8089a083	64	TParticlePDG* GetPDG (){return TDatabasePDG::Instance()->GetParticle(GetPdgCode());}
1b446896	65
	66	Int_t Beauty () { return GetPDG()->Beauty(); }
	67	Int_t Charm () { return GetPDG()->Charm(); }
	68	Int_t Strangeness () { return GetPDG()->Strangeness();}
37e71815	69	void ProductionVertex(TLorentzVector &v) const { v.SetXYZT(fVx,fVy,fVz,fVt);}
1b446896	70
	71
	72	Double_t Vx () const { return fVx;}
	73	Double_t Vy () const { return fVy;}
	74	Double_t Vz () const { return fVz;}
	75	Double_t T () const { return fVt;}
	76
	77	Double_t Px () const { return fPx; } //X coordinate of the momentum
	78	Double_t Py () const { return fPy; } //Y coordinate of the momentum
	79	Double_t Pz () const { return fPz; } //Z coordinate of the momentum
	80	Double_t P () const //momentum
	81	{ return TMath::Sqrt(fPxfPx+fPyfPy+fPz*fPz); }
	82
37e71815	83	void Momentum(TLorentzVector &v) const { v.SetPxPyPzE(fPx,fPy,fPz,fE);}
1b446896	84
	85	Double_t Pt () const //transverse momentum
	86	{ return TMath::Sqrt(fPxfPx+fPyfPy); }
	87	Double_t Energy() const { return fE; }
	88
	89	//Pseudo Rapidity
	90	Double_t Eta () const { if (P() != fPz) return 0.5*TMath::Log((P()+fPz)/(P()-fPz));
	91	else return 1.e30;}
	92
	93	//Rapidity
	94	Double_t Y () const { if (fE != fPz) return 0.5*TMath::Log((fE+fPz)/(fE-fPz));
	95	else return 1.e30;}
	96
7052051b	97	Double_t Phi () const { return TMath::Pi()+TMath::ATan2(-fPy,-fPx); }
1b446896	98
4d9301d5	99	Double_t Theta () const { return (fPz==0)?TMath::PiOver2():TMath::ACos(fPz/P()); }
1b446896	100
4d9301d5	101	// setters
1b446896	102
	103	void SetMomentum(Double_t px, Double_t py, Double_t pz, Double_t e)
	104	{fPx=px; fPy=py; fPz=pz; fE=e;}
	105	void SetMomentum(const TLorentzVector& p)
	106	{SetMomentum(p.Px(),p.Py(),p.Pz(),p.Energy());}
	107
	108	void SetProductionVertex(Double_t vx, Double_t vy, Double_t vz, Double_t t)
	109	{fVx=vx; fVy=vy; fVz=vz; fVt=t;}
	110	void SetProductionVertex(const TLorentzVector& v)
	111	{SetProductionVertex(v.X(),v.Y(),v.Z(),v.T());}
4d1d0fe9	112	void SetCalcMass(Double_t mass) {fCalcMass = mass;}
dd82cadc	113
	114	void SetUID(Int_t id){fIdxInEvent = id;}
	115
637fd167	116	const Char_t* GetName() const;
8089a083	117	void Print() const;
f5de2f09	118
	119	void SetTrackPoints(AliHBTTrackPoints* tpts){fTrackPoints = tpts;}
	120	AliHBTTrackPoints* GetTrackPoints() const {return fTrackPoints;}
66d1d1a4	121	void SetClusterMap(AliHBTClusterMap* cm){fClusterMap = cm;}
	122	AliHBTClusterMap* GetClusterMap() const {return fClusterMap;}
	123
8089a083	124	static void SetDebug(Int_t dbg=1){fgDebug=dbg;}
8089a083	125	static Int_t GetDebug(){return fgDebug;}
1b446896	126
1b446896	127	protected:
8089a083	128	Int_t GetPidSlot(Int_t pdg) const;//returns position of the given PID in fPids (and fPidProb) array.
	129
	130	private:
	131	Char_t fPdgIdx; // index of PDG code of the particle in fPids
	132	Int_t fIdxInEvent; // index of a particle: the same particle can appear in the event
	133	// many times with different pid's. Idx allows to check that they are the same particles
ff3d1148	134	Int_t fNPids; // number of non-zero proboble Pids
	135	Int_t *fPids; // [fNPids] Array with PIDs
	136	Float_t *fPidProb; // [fNPids] PIDs probabilities
1b446896	137	Double_t fCalcMass; // Calculated mass
	138
	139	Double_t fPx; // x component of momentum
	140	Double_t fPy; // y component of momentum
	141	Double_t fPz; // z component of momentum
	142	Double_t fE; // Energy
	143
	144	Double_t fVx; // x of production vertex
	145	Double_t fVy; // y of production vertex
	146	Double_t fVz; // z of production vertex
	147	Double_t fVt; // t of production vertex
	148
f5de2f09	149	AliHBTTrackPoints* fTrackPoints; // track positions along trajectory - used by anti-merging cut
66d1d1a4	150	AliHBTClusterMap* fClusterMap; // bit map of cluters occupation; 1 if has cluter on given layer/padrow/...
66d1d1a4	151
37e71815	152	static Int_t fgDebug; //debug printout level
f5de2f09	153	ClassDef(AliHBTParticle,3) // TParticle vertex particle information
1b446896	154	};
	155
	156	#endif