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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> | |
13 | #include "AliAODVertex.h" | |
14 | #include "AliVirtualParticle.h" | |
15 | ||
16 | class AliAODRecoDecay : public AliVirtualParticle { | |
17 | ||
18 | public: | |
19 | ||
20 | AliAODRecoDecay(); | |
21 | AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge, | |
22 | Double_t *px,Double_t *py,Double_t *pz, | |
23 | Double_t *d0); | |
24 | AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge, | |
25 | Double_t *d0); | |
26 | virtual ~AliAODRecoDecay(); | |
27 | ||
28 | AliAODRecoDecay(const AliAODRecoDecay& source); | |
29 | AliAODRecoDecay& operator=(const AliAODRecoDecay& source); | |
30 | ||
31 | ||
32 | // decay vertex | |
33 | Double_t GetSecVtxX() const {return fSecondaryVtx->GetX();} | |
34 | Double_t GetSecVtxY() const {return fSecondaryVtx->GetY();} | |
35 | Double_t GetSecVtxZ() const {return fSecondaryVtx->GetZ();} | |
36 | Double_t RadiusSecVtx() const; | |
37 | void SetSecondaryVtx(AliAODVertex *vtx2) {fSecondaryVtx=vtx2;} | |
38 | AliAODVertex* GetSecondaryVtx() const {return fSecondaryVtx;} | |
39 | void GetSecondaryVtx(Double_t vtx[3]) const; | |
40 | Double_t GetReducedChi2() const {return fSecondaryVtx->GetChi2perNDF();} | |
41 | Short_t Charge() const {return fCharge;} | |
42 | Short_t GetCharge() const {return fCharge;} | |
43 | void SetCharge(Short_t charge=0) {fCharge=charge;} | |
44 | ||
45 | // PID | |
46 | void SetPID(Int_t nprongs,Double_t *pid); | |
47 | Double_t *GetPID() const { return fPID; } | |
48 | void GetPIDProng(Int_t ip,Double_t *pid) const; | |
49 | virtual const Double_t *PID() const { return fPID; } | |
50 | ||
51 | // prong-to-prong DCAs | |
52 | void SetDCAs(Int_t nDCA,Float_t *dca); | |
53 | void SetDCA(Float_t dca); // 2 prong | |
54 | Float_t GetDCA(Int_t i=0) const {return fDCA[i];} | |
55 | ||
56 | //event and run number | |
57 | void SetEventRunNumbers(Int_t en,Int_t rn) | |
58 | { fEventNumber=en; fRunNumber=rn; return; } | |
59 | Int_t GetEventNumber() const { return fEventNumber; } | |
60 | Int_t GetRunNumber() const { return fRunNumber; } | |
61 | ||
62 | // kinematics & topology | |
63 | Double_t Px() const; | |
64 | Double_t Py() const; | |
65 | Double_t Pz() const; | |
66 | Double_t P() const {return TMath::Sqrt(Px()*Px()+Py()*Py()+Pz()*Pz());} | |
67 | Double_t Pt() const {return TMath::Sqrt(Px()*Px()+Py()*Py());} | |
68 | Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);} | |
69 | Double_t Phi() const {return TMath::ATan2(Py(),Px());} | |
70 | Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));} | |
71 | Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));} | |
72 | Double_t E(UInt_t pdg) const; | |
73 | Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));} | |
74 | Double_t DecayLength(Double_t point[3]) const; | |
75 | Double_t DecayLength(AliAODVertex *vtx1) const | |
76 | {return fSecondaryVtx->DistanceToVertex(vtx1);} | |
77 | Double_t DecayLengthError(AliAODVertex *vtx1) const | |
78 | {return fSecondaryVtx->ErrorDistanceToVertex(vtx1);} | |
79 | Double_t NormalizedDecayLength(AliAODVertex *vtx1) const | |
80 | {return DecayLength(vtx1)/DecayLengthError(vtx1);} | |
81 | Double_t DecayLengthXY(Double_t point[3]) const; | |
82 | Double_t DecayLengthXY(AliAODVertex *vtx1) const | |
83 | {return fSecondaryVtx->DistanceXYToVertex(vtx1);} | |
84 | Double_t DecayLengthXYError(AliAODVertex *vtx1) const | |
85 | {return fSecondaryVtx->ErrorDistanceXYToVertex(vtx1);} | |
86 | Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const | |
87 | {return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);} | |
88 | Double_t Ct(UInt_t pdg,Double_t point[3]) const; | |
89 | Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const; | |
90 | Double_t CosPointingAngle(Double_t point[3]) const; | |
91 | Double_t CosPointingAngle(AliAODVertex *vtx1) const; | |
92 | Double_t CosPointingAngleXY(Double_t point[3]) const; | |
93 | Double_t CosPointingAngleXY(AliAODVertex *vtx1) const; | |
94 | Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const; | |
95 | Double_t InvMass(Int_t npdg,UInt_t *pdg) const; | |
96 | Double_t ImpParXY(Double_t point[3]) const; | |
97 | Double_t ImpParXY(AliAODVertex *vtx1) const; | |
98 | ||
99 | // prongs | |
100 | //Int_t GetNProngs() const {return fSecondaryVtx->GetNDaughters();} | |
101 | Int_t GetNProngs() const {return fNProngs;} | |
102 | ||
103 | Short_t ChargeProng(Int_t ip) const; | |
104 | Double_t Getd0Prong(Int_t ip) const {return fd0[ip];} | |
105 | Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];} | |
106 | Double_t PxProng(Int_t ip) const {return fPx[ip];} | |
107 | Double_t PyProng(Int_t ip) const {return fPy[ip];} | |
108 | Double_t PzProng(Int_t ip) const {return fPz[ip];} | |
109 | Double_t PtProng(Int_t ip) const; | |
110 | Double_t PProng(Int_t ip) const; | |
111 | Double_t PhiProng(Int_t ip) const | |
112 | {return TMath::ATan2(PyProng(ip),PxProng(ip));} | |
113 | Double_t ThetaProng(Int_t ip) const | |
114 | {return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));} | |
115 | Double_t EtaProng(Int_t ip) const | |
116 | {return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));} | |
117 | Double_t EProng(Int_t ip,UInt_t pdg) const; | |
118 | Double_t YProng(Int_t ip,UInt_t pdg) const | |
119 | {return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));} | |
120 | Double_t Alpha() const; // for Armenteros-Podolanski plot (V0's) | |
121 | Double_t QlProng(Int_t ip) const; | |
122 | Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's) | |
123 | Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const; | |
124 | Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
125 | Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const; | |
126 | Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
127 | Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const; | |
128 | Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const; | |
129 | ||
130 | // relate to other objects | |
131 | //Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex | |
132 | //Double_t DistanceToTrack(AliAODTrack *trk) // distance to a AliAODTrack | |
133 | ||
134 | ||
135 | ||
136 | void Print(Option_t* option = "") const; | |
137 | //void PrintIndices() const {fSecondaryVtx->PrintIndices();} | |
138 | ||
139 | // dummy functions for inheritance from AliVirtualParticle | |
140 | Double_t E() const | |
141 | {printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;} | |
142 | Double_t Y() const | |
143 | {printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;} | |
144 | Double_t M() const | |
145 | {printf("Dummy function"); return (Double_t)-999.;} | |
146 | ||
147 | protected: | |
148 | ||
149 | AliAODVertex *fSecondaryVtx; // decay vertex | |
150 | Short_t fCharge; // charge, use this convention for prongs charges: | |
151 | // if(charge== 0) even-index prongs are + | |
152 | // odd-index prongs are - | |
153 | // if(charge==+1) even-index prongs are + | |
154 | // odd-index prongs are - | |
155 | // if(charge==-1) even-index prongs are - | |
156 | // odd-index prongs are + | |
157 | ||
158 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
159 | Int_t fNProngs; // number of prongs | |
160 | Int_t fNDCA; // number of dca's | |
161 | Int_t fNPID; // number of PID probabilities | |
162 | Double_t *fPx; //[fNProngs] px of tracks at the vertex [GeV/c] | |
163 | Double_t *fPy; //[fNProngs] py of tracks at the vertex [GeV/c] | |
164 | Double_t *fPz; //[fNProngs] pz of tracks at the vertex [GeV/c] | |
165 | Double_t *fd0; //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm] | |
166 | Float_t *fDCA; //[fNDCA] prong-to-prong DCA [cm] | |
167 | // convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,... | |
168 | Double_t *fPID; //[fNPID] combined pid | |
169 | // (combined detector response probabilities) | |
170 | ||
171 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
172 | Int_t fEventNumber; | |
173 | Int_t fRunNumber; | |
174 | // TO BE PUT IN SPECIAL MC CLASS | |
175 | //Bool_t fSignal; // TRUE if signal, FALSE if background (for simulation) | |
176 | //Int_t fEvent; // number of the event this candidate comes from | |
177 | //Int_t fTrkNum[2]; // numbers of the two decay tracks | |
178 | //Int_t fPdg[2]; // PDG codes of the two tracks (for sim.) | |
179 | //Int_t fMum[2]; // PDG codes of the mothers (for sim.) | |
180 | ||
181 | // | |
182 | ||
183 | ClassDef(AliAODRecoDecay,1) // base class for AOD reconstructed decays | |
184 | }; | |
185 | ||
186 | ||
187 | inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const | |
188 | { | |
189 | if(fCharge==0 || fCharge==+1) { | |
190 | if(ip%2==0) { | |
191 | return (Short_t)1; | |
192 | } else { | |
193 | return (Short_t)-1; | |
194 | } | |
195 | } else { // fCharge==-1 | |
196 | if(ip%2==0) { | |
197 | return (Short_t)-1; | |
198 | } else { | |
199 | return (Short_t)1; | |
200 | } | |
201 | } | |
202 | } | |
203 | ||
204 | inline Double_t AliAODRecoDecay::RadiusSecVtx() const | |
205 | { | |
206 | return TMath::Sqrt(GetSecVtxX()*GetSecVtxX()+GetSecVtxY()*GetSecVtxY()); | |
207 | } | |
208 | ||
209 | inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const | |
210 | { | |
211 | fSecondaryVtx->GetPosition(vtx); | |
212 | return; | |
213 | } | |
214 | ||
215 | inline Double_t AliAODRecoDecay::Px() const | |
216 | { | |
217 | Double_t px=0.; | |
218 | for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i); | |
219 | return px; | |
220 | } | |
221 | ||
222 | inline Double_t AliAODRecoDecay::Py() const | |
223 | { | |
224 | Double_t py=0.; | |
225 | for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i); | |
226 | return py; | |
227 | } | |
228 | ||
229 | inline Double_t AliAODRecoDecay::Pz() const | |
230 | { | |
231 | Double_t pz=0.; | |
232 | for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i); | |
233 | return pz; | |
234 | } | |
235 | ||
236 | inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const | |
237 | { | |
238 | Double_t v[3]; | |
239 | vtx1->GetPosition(v); | |
240 | return Ct(pdg,v); | |
241 | } | |
242 | ||
243 | inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const | |
244 | { | |
245 | Double_t v[3]; | |
246 | vtx1->GetPosition(v); | |
247 | return CosPointingAngle(v); | |
248 | } | |
249 | ||
250 | inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const | |
251 | { | |
252 | Double_t v[3]; | |
253 | vtx1->GetPosition(v); | |
254 | return CosPointingAngleXY(v); | |
255 | } | |
256 | ||
257 | inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const | |
258 | { | |
259 | Double_t v[3]; | |
260 | vtx1->GetPosition(v); | |
261 | return ImpParXY(v); | |
262 | } | |
263 | ||
264 | inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const | |
265 | { | |
266 | return TMath::Sqrt(PxProng(ip)*PxProng(ip)+PyProng(ip)*PyProng(ip)); | |
267 | } | |
268 | ||
269 | inline Double_t AliAODRecoDecay::PProng(Int_t ip) const | |
270 | { | |
271 | return TMath::Sqrt(PtProng(ip)*PtProng(ip)+PzProng(ip)*PzProng(ip)); | |
272 | } | |
273 | ||
274 | inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
275 | { | |
276 | Double_t v[3]; | |
277 | vtx1->GetPosition(v); | |
278 | return QlProngFlightLine(ip,v); | |
279 | } | |
280 | ||
281 | inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
282 | { | |
283 | Double_t v[3]; | |
284 | vtx1->GetPosition(v); | |
285 | return QtProngFlightLine(ip,v); | |
286 | } | |
287 | ||
288 | inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Float_t *dca) | |
289 | { | |
290 | if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) { | |
291 | printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2"); | |
292 | return; | |
293 | } | |
294 | if(fDCA) delete [] fDCA; | |
295 | fDCA = new Float_t[nDCA]; | |
296 | for(Int_t i=0;i<nDCA;i++) | |
297 | fDCA[i] = dca[i]; | |
298 | return; | |
299 | } | |
300 | ||
301 | inline void AliAODRecoDecay::SetDCA(Float_t dca) | |
302 | { | |
303 | Float_t ddca[1]; ddca[0]=dca; | |
304 | SetDCAs(1,ddca); | |
305 | return; | |
306 | } | |
307 | ||
308 | inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid) | |
309 | { | |
310 | if(nprongs!=GetNProngs()) { | |
311 | printf("Wrong number of prongs"); | |
312 | return; | |
313 | } | |
314 | if(fPID) delete [] fPID; | |
315 | fPID = new Double_t[nprongs*5]; | |
316 | for(Int_t i=0;i<nprongs;i++) | |
317 | for(Int_t j=0;j<5;j++) | |
318 | fPID[i*5+j] = pid[i*5+j]; | |
319 | return; | |
320 | } | |
321 | ||
322 | inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const | |
323 | { | |
324 | for(Int_t j=0;j<5;j++) | |
325 | pid[j] = fPID[ip*5+j]; | |
326 | return; | |
327 | } | |
328 | ||
329 | ||
330 | ||
331 | #endif |