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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; |
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; |
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 |
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; | |
88 | Double_t P() const {return TMath::Sqrt(Px()*Px()+Py()*Py()+Pz()*Pz());} | |
89 | Double_t Pt() const {return TMath::Sqrt(Px()*Px()+Py()*Py());} | |
90 | Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);} | |
c683ddc2 | 91 | Bool_t PxPyPz(Double_t p[3]) const { p[0] = Px(); p[1] = Py(); p[2] = Pz(); return kTRUE; } |
1eab4b5c | 92 | Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());} |
7de7497b | 93 | Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));} |
94 | Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));} | |
c683ddc2 | 95 | Double_t Xv() const { return GetSecVtxX(); } |
96 | Double_t Yv() const { return GetSecVtxY(); } | |
97 | Double_t Zv() const { return GetSecVtxZ(); } | |
98 | virtual Bool_t XvYvZv(Double_t x[3]) const { x[0] = Xv(); x[1] = Yv(); x[2] = Zv(); return kTRUE; } | |
7de7497b | 99 | Double_t E(UInt_t pdg) const; |
100 | Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));} | |
101 | Double_t DecayLength(Double_t point[3]) const; | |
102 | Double_t DecayLength(AliAODVertex *vtx1) const | |
5cc73331 | 103 | {return GetSecondaryVtx()->DistanceToVertex(vtx1);} |
7de7497b | 104 | Double_t DecayLengthError(AliAODVertex *vtx1) const |
5cc73331 | 105 | {return GetSecondaryVtx()->ErrorDistanceToVertex(vtx1);} |
7de7497b | 106 | Double_t NormalizedDecayLength(AliAODVertex *vtx1) const |
107 | {return DecayLength(vtx1)/DecayLengthError(vtx1);} | |
108 | Double_t DecayLengthXY(Double_t point[3]) const; | |
109 | Double_t DecayLengthXY(AliAODVertex *vtx1) const | |
5cc73331 | 110 | {return GetSecondaryVtx()->DistanceXYToVertex(vtx1);} |
7de7497b | 111 | Double_t DecayLengthXYError(AliAODVertex *vtx1) const |
5cc73331 | 112 | {return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);} |
7de7497b | 113 | Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const |
114 | {return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);} | |
115 | Double_t Ct(UInt_t pdg,Double_t point[3]) const; | |
116 | Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const; | |
117 | Double_t CosPointingAngle(Double_t point[3]) const; | |
118 | Double_t CosPointingAngle(AliAODVertex *vtx1) const; | |
119 | Double_t CosPointingAngleXY(Double_t point[3]) const; | |
120 | Double_t CosPointingAngleXY(AliAODVertex *vtx1) const; | |
121 | Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const; | |
122 | Double_t InvMass(Int_t npdg,UInt_t *pdg) const; | |
123 | Double_t ImpParXY(Double_t point[3]) const; | |
124 | Double_t ImpParXY(AliAODVertex *vtx1) const; | |
125 | ||
126 | // prongs | |
e045ffda | 127 | Int_t GetNProngs() const {return fNProngs;} |
128 | Int_t GetNDaughters() const {return GetSecondaryVtx()->GetNDaughters();} | |
129 | TObject *GetDaughter(Int_t i) const {return (GetNDaughters()>i ? GetSecondaryVtx()->GetDaughter(i) : 0x0);} | |
7de7497b | 130 | |
e045ffda | 131 | Short_t ChargeProng(Int_t ip) const; |
7de7497b | 132 | Double_t Getd0Prong(Int_t ip) const {return fd0[ip];} |
133 | Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];} | |
134 | Double_t PxProng(Int_t ip) const {return fPx[ip];} | |
135 | Double_t PyProng(Int_t ip) const {return fPy[ip];} | |
136 | Double_t PzProng(Int_t ip) const {return fPz[ip];} | |
137 | Double_t PtProng(Int_t ip) const; | |
138 | Double_t PProng(Int_t ip) const; | |
139 | Double_t PhiProng(Int_t ip) const | |
140 | {return TMath::ATan2(PyProng(ip),PxProng(ip));} | |
141 | Double_t ThetaProng(Int_t ip) const | |
142 | {return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));} | |
143 | Double_t EtaProng(Int_t ip) const | |
144 | {return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));} | |
145 | Double_t EProng(Int_t ip,UInt_t pdg) const; | |
146 | Double_t YProng(Int_t ip,UInt_t pdg) const | |
147 | {return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));} | |
148 | Double_t Alpha() const; // for Armenteros-Podolanski plot (V0's) | |
149 | Double_t QlProng(Int_t ip) const; | |
150 | Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's) | |
151 | Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const; | |
152 | Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
153 | Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const; | |
154 | Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
155 | Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const; | |
156 | Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const; | |
157 | ||
158 | // relate to other objects | |
159 | //Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex | |
160 | //Double_t DistanceToTrack(AliAODTrack *trk) // distance to a AliAODTrack | |
161 | ||
162 | ||
163 | ||
164 | void Print(Option_t* option = "") const; | |
5cc73331 | 165 | //void PrintIndices() const {GetSecondaryVtx()->PrintIndices();} |
7de7497b | 166 | |
ff7c57dd | 167 | // dummy functions for inheritance from AliVParticle |
7de7497b | 168 | Double_t E() const |
169 | {printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;} | |
170 | Double_t Y() const | |
171 | {printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;} | |
172 | Double_t M() const | |
173 | {printf("Dummy function"); return (Double_t)-999.;} | |
3c43fb2b | 174 | Int_t GetLabel() const {return -1;} |
6a8e543a | 175 | Int_t PdgCode() const {return 0;} |
c8fe2783 | 176 | |
7de7497b | 177 | protected: |
178 | ||
9c4d0454 | 179 | 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 | 180 | Int_t MatchToMC(Int_t pdgabs,TClonesArray *mcArray,Int_t dgLabels[10]) const { return MatchToMC(pdgabs,mcArray,dgLabels,GetNDaughters()); } |
181 | ||
5cc73331 | 182 | TRef fSecondaryVtx; // decay vertex |
a11de4a0 | 183 | AliAODVertex *fOwnSecondaryVtx; // temporary solution (to work outside AliAODEvent) |
5cc73331 | 184 | Short_t fCharge; // charge, use this convention for prongs charges: |
185 | // if(charge== 0) even-index prongs are + | |
186 | // odd-index prongs are - | |
187 | // if(charge==+1) even-index prongs are + | |
188 | // odd-index prongs are - | |
189 | // if(charge==-1) even-index prongs are - | |
190 | // odd-index prongs are + | |
7de7497b | 191 | |
192 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
5cc73331 | 193 | Int_t fNProngs; // number of prongs |
194 | Int_t fNDCA; // number of dca's | |
195 | Int_t fNPID; // number of PID probabilities | |
196 | Double32_t *fPx; //[fNProngs] px of tracks at the vertex [GeV/c] | |
197 | Double32_t *fPy; //[fNProngs] py of tracks at the vertex [GeV/c] | |
198 | Double32_t *fPz; //[fNProngs] pz of tracks at the vertex [GeV/c] | |
199 | Double32_t *fd0; //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm] | |
200 | Double32_t *fDCA; //[fNDCA] prong-to-prong DCA [cm] | |
201 | // convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,... | |
202 | Double32_t *fPID; //[fNPID] combined pid | |
203 | // (combined detector response probabilities) | |
7de7497b | 204 | |
205 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
206 | Int_t fEventNumber; | |
207 | Int_t fRunNumber; | |
208 | // TO BE PUT IN SPECIAL MC CLASS | |
209 | //Bool_t fSignal; // TRUE if signal, FALSE if background (for simulation) | |
7de7497b | 210 | //Int_t fTrkNum[2]; // numbers of the two decay tracks |
211 | //Int_t fPdg[2]; // PDG codes of the two tracks (for sim.) | |
212 | //Int_t fMum[2]; // PDG codes of the mothers (for sim.) | |
213 | ||
214 | // | |
215 | ||
e045ffda | 216 | ClassDef(AliAODRecoDecay,4) // base class for AOD reconstructed decays |
7de7497b | 217 | }; |
218 | ||
219 | ||
220 | inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const | |
221 | { | |
222 | if(fCharge==0 || fCharge==+1) { | |
223 | if(ip%2==0) { | |
224 | return (Short_t)1; | |
225 | } else { | |
226 | return (Short_t)-1; | |
227 | } | |
228 | } else { // fCharge==-1 | |
229 | if(ip%2==0) { | |
230 | return (Short_t)-1; | |
231 | } else { | |
232 | return (Short_t)1; | |
233 | } | |
234 | } | |
235 | } | |
236 | ||
237 | inline Double_t AliAODRecoDecay::RadiusSecVtx() const | |
238 | { | |
239 | return TMath::Sqrt(GetSecVtxX()*GetSecVtxX()+GetSecVtxY()*GetSecVtxY()); | |
240 | } | |
241 | ||
242 | inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const | |
243 | { | |
5cc73331 | 244 | GetSecondaryVtx()->GetPosition(vtx); |
7de7497b | 245 | return; |
246 | } | |
247 | ||
248 | inline Double_t AliAODRecoDecay::Px() const | |
249 | { | |
250 | Double_t px=0.; | |
251 | for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i); | |
252 | return px; | |
253 | } | |
254 | ||
255 | inline Double_t AliAODRecoDecay::Py() const | |
256 | { | |
257 | Double_t py=0.; | |
258 | for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i); | |
259 | return py; | |
260 | } | |
261 | ||
262 | inline Double_t AliAODRecoDecay::Pz() const | |
263 | { | |
264 | Double_t pz=0.; | |
265 | for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i); | |
266 | return pz; | |
267 | } | |
268 | ||
269 | inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const | |
270 | { | |
271 | Double_t v[3]; | |
272 | vtx1->GetPosition(v); | |
273 | return Ct(pdg,v); | |
274 | } | |
275 | ||
276 | inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const | |
277 | { | |
278 | Double_t v[3]; | |
279 | vtx1->GetPosition(v); | |
280 | return CosPointingAngle(v); | |
281 | } | |
282 | ||
283 | inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const | |
284 | { | |
285 | Double_t v[3]; | |
286 | vtx1->GetPosition(v); | |
287 | return CosPointingAngleXY(v); | |
288 | } | |
289 | ||
290 | inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const | |
291 | { | |
292 | Double_t v[3]; | |
293 | vtx1->GetPosition(v); | |
294 | return ImpParXY(v); | |
295 | } | |
296 | ||
297 | inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const | |
298 | { | |
299 | return TMath::Sqrt(PxProng(ip)*PxProng(ip)+PyProng(ip)*PyProng(ip)); | |
300 | } | |
301 | ||
302 | inline Double_t AliAODRecoDecay::PProng(Int_t ip) const | |
303 | { | |
304 | return TMath::Sqrt(PtProng(ip)*PtProng(ip)+PzProng(ip)*PzProng(ip)); | |
305 | } | |
306 | ||
307 | inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
308 | { | |
309 | Double_t v[3]; | |
310 | vtx1->GetPosition(v); | |
311 | return QlProngFlightLine(ip,v); | |
312 | } | |
313 | ||
314 | inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
315 | { | |
316 | Double_t v[3]; | |
317 | vtx1->GetPosition(v); | |
318 | return QtProngFlightLine(ip,v); | |
319 | } | |
320 | ||
5cc73331 | 321 | inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca) |
7de7497b | 322 | { |
323 | if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) { | |
324 | printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2"); | |
325 | return; | |
326 | } | |
327 | if(fDCA) delete [] fDCA; | |
94de4057 | 328 | fNDCA = nDCA; |
5cc73331 | 329 | fDCA = new Double32_t[nDCA]; |
7de7497b | 330 | for(Int_t i=0;i<nDCA;i++) |
331 | fDCA[i] = dca[i]; | |
332 | return; | |
333 | } | |
334 | ||
5cc73331 | 335 | inline void AliAODRecoDecay::SetDCA(Double_t dca) |
7de7497b | 336 | { |
5cc73331 | 337 | Double_t ddca[1]; ddca[0]=dca; |
7de7497b | 338 | SetDCAs(1,ddca); |
339 | return; | |
340 | } | |
341 | ||
342 | inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid) | |
343 | { | |
344 | if(nprongs!=GetNProngs()) { | |
345 | printf("Wrong number of prongs"); | |
346 | return; | |
347 | } | |
348 | if(fPID) delete [] fPID; | |
58b0186f | 349 | fNPID = nprongs*5; |
5cc73331 | 350 | fPID = new Double32_t[nprongs*5]; |
7de7497b | 351 | for(Int_t i=0;i<nprongs;i++) |
352 | for(Int_t j=0;j<5;j++) | |
353 | fPID[i*5+j] = pid[i*5+j]; | |
354 | return; | |
355 | } | |
356 | ||
357 | inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const | |
358 | { | |
359 | for(Int_t j=0;j<5;j++) | |
360 | pid[j] = fPID[ip*5+j]; | |
361 | return; | |
362 | } | |
363 | ||
364 | ||
365 | ||
366 | #endif | |
bfd68286 | 367 |