I improved (by a factor 2.5) the speed of the MatchToMC method
[u/mrichter/AliRoot.git] / STEER / AliAODRecoDecay.h
CommitLineData
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 19class 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;
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));}
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:
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
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
214inline 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
231inline Double_t AliAODRecoDecay::RadiusSecVtx() const
232{
233 return TMath::Sqrt(GetSecVtxX()*GetSecVtxX()+GetSecVtxY()*GetSecVtxY());
234}
235
236inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const
237{
5cc73331 238 GetSecondaryVtx()->GetPosition(vtx);
7de7497b 239 return;
240}
241
242inline 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
249inline 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
256inline 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
263inline 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
270inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const
271{
272 Double_t v[3];
273 vtx1->GetPosition(v);
274 return CosPointingAngle(v);
275}
276
277inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const
278{
279 Double_t v[3];
280 vtx1->GetPosition(v);
281 return CosPointingAngleXY(v);
282}
283
284inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const
285{
286 Double_t v[3];
287 vtx1->GetPosition(v);
288 return ImpParXY(v);
289}
290
291inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const
292{
293 return TMath::Sqrt(PxProng(ip)*PxProng(ip)+PyProng(ip)*PyProng(ip));
294}
295
296inline Double_t AliAODRecoDecay::PProng(Int_t ip) const
297{
298 return TMath::Sqrt(PtProng(ip)*PtProng(ip)+PzProng(ip)*PzProng(ip));
299}
300
301inline 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
308inline 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 315inline 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 329inline 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
336inline 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[i*5+j] = pid[i*5+j];
348 return;
349}
350
351inline 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