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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> | |
13 | #include <TRef.h> | |
14 | #include <TClonesArray.h> | |
15 | #include "AliAODVertex.h" | |
16 | #include "AliAODTrack.h" | |
17 | #include "AliVTrack.h" | |
18 | ||
19 | class AliAODRecoDecay : public AliVTrack { | |
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 | |
36 | Double_t GetSecVtxX() const {return GetSecondaryVtx()->GetX();} | |
37 | Double_t GetSecVtxY() const {return GetSecondaryVtx()->GetY();} | |
38 | Double_t GetSecVtxZ() const {return GetSecondaryVtx()->GetZ();} | |
39 | Double_t RadiusSecVtx() const; | |
40 | void SetSecondaryVtx(AliAODVertex *vtx2) {fSecondaryVtx=vtx2;} | |
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;} | |
44 | void GetSecondaryVtx(Double_t vtx[3]) const; | |
45 | Double_t GetReducedChi2() const {return GetSecondaryVtx()->GetChi2perNDF();} | |
46 | Short_t Charge() const {return fCharge;} | |
47 | Short_t GetCharge() const {return fCharge;} | |
48 | void SetCharge(Short_t charge=0) {fCharge=charge;} | |
49 | ||
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; | |
55 | ||
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 | |
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];} | |
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 | ||
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 | ||
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.);} | |
87 | Bool_t PxPyPz(Double_t p[3]) const { p[0] = Px(); p[1] = Py(); p[2] = Pz(); return kTRUE; } | |
88 | Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());} | |
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));} | |
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; } | |
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 | |
99 | {return GetSecondaryVtx()->DistanceToVertex(vtx1);} | |
100 | Double_t DecayLengthError(AliAODVertex *vtx1) const | |
101 | {return GetSecondaryVtx()->ErrorDistanceToVertex(vtx1);} | |
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 | |
106 | {return GetSecondaryVtx()->DistanceXYToVertex(vtx1);} | |
107 | Double_t DecayLengthXYError(AliAODVertex *vtx1) const | |
108 | {return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);} | |
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 | |
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);} | |
126 | ||
127 | Short_t ChargeProng(Int_t ip) const; | |
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 | ||
160 | void Print(Option_t* option = "") const; | |
161 | //void PrintIndices() const {GetSecondaryVtx()->PrintIndices();} | |
162 | ||
163 | // dummy functions for inheritance from AliVParticle | |
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.;} | |
170 | Int_t GetLabel() const {return -1;} | |
171 | protected: | |
172 | ||
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 | ||
176 | TRef fSecondaryVtx; // decay vertex | |
177 | AliAODVertex *fOwnSecondaryVtx; // temporary solution (to work outside AliAODEvent) | |
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 + | |
185 | ||
186 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
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) | |
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) | |
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 | ||
210 | ClassDef(AliAODRecoDecay,4) // base class for AOD reconstructed decays | |
211 | }; | |
212 | ||
213 | ||
214 | inline 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 | ||
231 | inline Double_t AliAODRecoDecay::RadiusSecVtx() const | |
232 | { | |
233 | return TMath::Sqrt(GetSecVtxX()*GetSecVtxX()+GetSecVtxY()*GetSecVtxY()); | |
234 | } | |
235 | ||
236 | inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const | |
237 | { | |
238 | GetSecondaryVtx()->GetPosition(vtx); | |
239 | return; | |
240 | } | |
241 | ||
242 | inline 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 | ||
249 | inline 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 | ||
256 | inline 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 | ||
263 | inline 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 | ||
270 | inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const | |
271 | { | |
272 | Double_t v[3]; | |
273 | vtx1->GetPosition(v); | |
274 | return CosPointingAngle(v); | |
275 | } | |
276 | ||
277 | inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const | |
278 | { | |
279 | Double_t v[3]; | |
280 | vtx1->GetPosition(v); | |
281 | return CosPointingAngleXY(v); | |
282 | } | |
283 | ||
284 | inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const | |
285 | { | |
286 | Double_t v[3]; | |
287 | vtx1->GetPosition(v); | |
288 | return ImpParXY(v); | |
289 | } | |
290 | ||
291 | inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const | |
292 | { | |
293 | return TMath::Sqrt(PxProng(ip)*PxProng(ip)+PyProng(ip)*PyProng(ip)); | |
294 | } | |
295 | ||
296 | inline Double_t AliAODRecoDecay::PProng(Int_t ip) const | |
297 | { | |
298 | return TMath::Sqrt(PtProng(ip)*PtProng(ip)+PzProng(ip)*PzProng(ip)); | |
299 | } | |
300 | ||
301 | inline 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 | ||
308 | inline 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 | ||
315 | inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca) | |
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; | |
322 | fNDCA = nDCA; | |
323 | fDCA = new Double32_t[nDCA]; | |
324 | for(Int_t i=0;i<nDCA;i++) | |
325 | fDCA[i] = dca[i]; | |
326 | return; | |
327 | } | |
328 | ||
329 | inline void AliAODRecoDecay::SetDCA(Double_t dca) | |
330 | { | |
331 | Double_t ddca[1]; ddca[0]=dca; | |
332 | SetDCAs(1,ddca); | |
333 | return; | |
334 | } | |
335 | ||
336 | inline 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; | |
343 | fNPID = nprongs*5; | |
344 | fPID = new Double32_t[nprongs*5]; | |
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 | ||
351 | inline 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 | |
361 |