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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> |
7de7497b | 14 | #include "AliAODVertex.h" |
ff7c57dd | 15 | #include "AliVParticle.h" |
7de7497b | 16 | |
ff7c57dd | 17 | class AliAODRecoDecay : public AliVParticle { |
7de7497b | 18 | |
19 | public: | |
20 | ||
21 | AliAODRecoDecay(); | |
22 | AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge, | |
23 | Double_t *px,Double_t *py,Double_t *pz, | |
24 | Double_t *d0); | |
25 | AliAODRecoDecay(AliAODVertex *vtx2,Int_t nprongs,Short_t charge, | |
26 | Double_t *d0); | |
27 | virtual ~AliAODRecoDecay(); | |
28 | ||
29 | AliAODRecoDecay(const AliAODRecoDecay& source); | |
30 | AliAODRecoDecay& operator=(const AliAODRecoDecay& source); | |
31 | ||
32 | ||
33 | // decay vertex | |
5cc73331 | 34 | Double_t GetSecVtxX() const {return GetSecondaryVtx()->GetX();} |
35 | Double_t GetSecVtxY() const {return GetSecondaryVtx()->GetY();} | |
36 | Double_t GetSecVtxZ() const {return GetSecondaryVtx()->GetZ();} | |
7de7497b | 37 | Double_t RadiusSecVtx() const; |
38 | void SetSecondaryVtx(AliAODVertex *vtx2) {fSecondaryVtx=vtx2;} | |
5cc73331 | 39 | AliAODVertex* GetSecondaryVtx() const {return (AliAODVertex*)fSecondaryVtx.GetObject();} |
7de7497b | 40 | void GetSecondaryVtx(Double_t vtx[3]) const; |
5cc73331 | 41 | Double_t GetReducedChi2() const {return GetSecondaryVtx()->GetChi2perNDF();} |
7de7497b | 42 | Short_t Charge() const {return fCharge;} |
43 | Short_t GetCharge() const {return fCharge;} | |
44 | void SetCharge(Short_t charge=0) {fCharge=charge;} | |
45 | ||
46 | // PID | |
47 | void SetPID(Int_t nprongs,Double_t *pid); | |
48 | Double_t *GetPID() const { return fPID; } | |
49 | void GetPIDProng(Int_t ip,Double_t *pid) const; | |
50 | virtual const Double_t *PID() const { return fPID; } | |
51 | ||
52 | // prong-to-prong DCAs | |
5cc73331 | 53 | void SetDCAs(Int_t nDCA,Double_t *dca); |
54 | void SetDCA(Double_t dca); // 2 prong | |
55 | Double_t GetDCA(Int_t i=0) const {return fDCA[i];} | |
7de7497b | 56 | |
57 | //event and run number | |
58 | void SetEventRunNumbers(Int_t en,Int_t rn) | |
59 | { fEventNumber=en; fRunNumber=rn; return; } | |
60 | Int_t GetEventNumber() const { return fEventNumber; } | |
61 | Int_t GetRunNumber() const { return fRunNumber; } | |
62 | ||
63 | // kinematics & topology | |
64 | Double_t Px() const; | |
65 | Double_t Py() const; | |
66 | Double_t Pz() const; | |
67 | Double_t P() const {return TMath::Sqrt(Px()*Px()+Py()*Py()+Pz()*Pz());} | |
68 | Double_t Pt() const {return TMath::Sqrt(Px()*Px()+Py()*Py());} | |
69 | Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);} | |
1eab4b5c | 70 | Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());} |
7de7497b | 71 | Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));} |
72 | Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));} | |
73 | Double_t E(UInt_t pdg) const; | |
74 | Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));} | |
75 | Double_t DecayLength(Double_t point[3]) const; | |
76 | Double_t DecayLength(AliAODVertex *vtx1) const | |
5cc73331 | 77 | {return GetSecondaryVtx()->DistanceToVertex(vtx1);} |
7de7497b | 78 | Double_t DecayLengthError(AliAODVertex *vtx1) const |
5cc73331 | 79 | {return GetSecondaryVtx()->ErrorDistanceToVertex(vtx1);} |
7de7497b | 80 | Double_t NormalizedDecayLength(AliAODVertex *vtx1) const |
81 | {return DecayLength(vtx1)/DecayLengthError(vtx1);} | |
82 | Double_t DecayLengthXY(Double_t point[3]) const; | |
83 | Double_t DecayLengthXY(AliAODVertex *vtx1) const | |
5cc73331 | 84 | {return GetSecondaryVtx()->DistanceXYToVertex(vtx1);} |
7de7497b | 85 | Double_t DecayLengthXYError(AliAODVertex *vtx1) const |
5cc73331 | 86 | {return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);} |
7de7497b | 87 | Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const |
88 | {return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);} | |
89 | Double_t Ct(UInt_t pdg,Double_t point[3]) const; | |
90 | Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const; | |
91 | Double_t CosPointingAngle(Double_t point[3]) const; | |
92 | Double_t CosPointingAngle(AliAODVertex *vtx1) const; | |
93 | Double_t CosPointingAngleXY(Double_t point[3]) const; | |
94 | Double_t CosPointingAngleXY(AliAODVertex *vtx1) const; | |
95 | Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const; | |
96 | Double_t InvMass(Int_t npdg,UInt_t *pdg) const; | |
97 | Double_t ImpParXY(Double_t point[3]) const; | |
98 | Double_t ImpParXY(AliAODVertex *vtx1) const; | |
99 | ||
100 | // prongs | |
5cc73331 | 101 | //Int_t GetNProngs() const {return GetSecondaryVtx()->GetNDaughters();} |
7de7497b | 102 | Int_t GetNProngs() const {return fNProngs;} |
103 | ||
104 | Short_t ChargeProng(Int_t ip) const; | |
105 | Double_t Getd0Prong(Int_t ip) const {return fd0[ip];} | |
106 | Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];} | |
107 | Double_t PxProng(Int_t ip) const {return fPx[ip];} | |
108 | Double_t PyProng(Int_t ip) const {return fPy[ip];} | |
109 | Double_t PzProng(Int_t ip) const {return fPz[ip];} | |
110 | Double_t PtProng(Int_t ip) const; | |
111 | Double_t PProng(Int_t ip) const; | |
112 | Double_t PhiProng(Int_t ip) const | |
113 | {return TMath::ATan2(PyProng(ip),PxProng(ip));} | |
114 | Double_t ThetaProng(Int_t ip) const | |
115 | {return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));} | |
116 | Double_t EtaProng(Int_t ip) const | |
117 | {return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));} | |
118 | Double_t EProng(Int_t ip,UInt_t pdg) const; | |
119 | Double_t YProng(Int_t ip,UInt_t pdg) const | |
120 | {return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));} | |
121 | Double_t Alpha() const; // for Armenteros-Podolanski plot (V0's) | |
122 | Double_t QlProng(Int_t ip) const; | |
123 | Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's) | |
124 | Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const; | |
125 | Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
126 | Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const; | |
127 | Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
128 | Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const; | |
129 | Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const; | |
130 | ||
131 | // relate to other objects | |
132 | //Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex | |
133 | //Double_t DistanceToTrack(AliAODTrack *trk) // distance to a AliAODTrack | |
134 | ||
135 | ||
136 | ||
137 | void Print(Option_t* option = "") const; | |
5cc73331 | 138 | //void PrintIndices() const {GetSecondaryVtx()->PrintIndices();} |
7de7497b | 139 | |
ff7c57dd | 140 | // dummy functions for inheritance from AliVParticle |
7de7497b | 141 | Double_t E() const |
142 | {printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;} | |
143 | Double_t Y() const | |
144 | {printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;} | |
145 | Double_t M() const | |
146 | {printf("Dummy function"); return (Double_t)-999.;} | |
147 | ||
148 | protected: | |
149 | ||
5cc73331 | 150 | TRef fSecondaryVtx; // decay vertex |
151 | Short_t fCharge; // charge, use this convention for prongs charges: | |
152 | // if(charge== 0) even-index prongs are + | |
153 | // odd-index prongs are - | |
154 | // if(charge==+1) even-index prongs are + | |
155 | // odd-index prongs are - | |
156 | // if(charge==-1) even-index prongs are - | |
157 | // odd-index prongs are + | |
7de7497b | 158 | |
159 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
5cc73331 | 160 | Int_t fNProngs; // number of prongs |
161 | Int_t fNDCA; // number of dca's | |
162 | Int_t fNPID; // number of PID probabilities | |
163 | Double32_t *fPx; //[fNProngs] px of tracks at the vertex [GeV/c] | |
164 | Double32_t *fPy; //[fNProngs] py of tracks at the vertex [GeV/c] | |
165 | Double32_t *fPz; //[fNProngs] pz of tracks at the vertex [GeV/c] | |
166 | Double32_t *fd0; //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm] | |
167 | Double32_t *fDCA; //[fNDCA] prong-to-prong DCA [cm] | |
168 | // convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,... | |
169 | Double32_t *fPID; //[fNPID] combined pid | |
170 | // (combined detector response probabilities) | |
7de7497b | 171 | |
172 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
173 | Int_t fEventNumber; | |
174 | Int_t fRunNumber; | |
175 | // TO BE PUT IN SPECIAL MC CLASS | |
176 | //Bool_t fSignal; // TRUE if signal, FALSE if background (for simulation) | |
177 | //Int_t fEvent; // number of the event this candidate comes from | |
178 | //Int_t fTrkNum[2]; // numbers of the two decay tracks | |
179 | //Int_t fPdg[2]; // PDG codes of the two tracks (for sim.) | |
180 | //Int_t fMum[2]; // PDG codes of the mothers (for sim.) | |
181 | ||
182 | // | |
183 | ||
e58209a0 | 184 | ClassDef(AliAODRecoDecay,2) // base class for AOD reconstructed decays |
7de7497b | 185 | }; |
186 | ||
187 | ||
188 | inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const | |
189 | { | |
190 | if(fCharge==0 || fCharge==+1) { | |
191 | if(ip%2==0) { | |
192 | return (Short_t)1; | |
193 | } else { | |
194 | return (Short_t)-1; | |
195 | } | |
196 | } else { // fCharge==-1 | |
197 | if(ip%2==0) { | |
198 | return (Short_t)-1; | |
199 | } else { | |
200 | return (Short_t)1; | |
201 | } | |
202 | } | |
203 | } | |
204 | ||
205 | inline Double_t AliAODRecoDecay::RadiusSecVtx() const | |
206 | { | |
207 | return TMath::Sqrt(GetSecVtxX()*GetSecVtxX()+GetSecVtxY()*GetSecVtxY()); | |
208 | } | |
209 | ||
210 | inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const | |
211 | { | |
5cc73331 | 212 | GetSecondaryVtx()->GetPosition(vtx); |
7de7497b | 213 | return; |
214 | } | |
215 | ||
216 | inline Double_t AliAODRecoDecay::Px() const | |
217 | { | |
218 | Double_t px=0.; | |
219 | for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i); | |
220 | return px; | |
221 | } | |
222 | ||
223 | inline Double_t AliAODRecoDecay::Py() const | |
224 | { | |
225 | Double_t py=0.; | |
226 | for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i); | |
227 | return py; | |
228 | } | |
229 | ||
230 | inline Double_t AliAODRecoDecay::Pz() const | |
231 | { | |
232 | Double_t pz=0.; | |
233 | for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i); | |
234 | return pz; | |
235 | } | |
236 | ||
237 | inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const | |
238 | { | |
239 | Double_t v[3]; | |
240 | vtx1->GetPosition(v); | |
241 | return Ct(pdg,v); | |
242 | } | |
243 | ||
244 | inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const | |
245 | { | |
246 | Double_t v[3]; | |
247 | vtx1->GetPosition(v); | |
248 | return CosPointingAngle(v); | |
249 | } | |
250 | ||
251 | inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const | |
252 | { | |
253 | Double_t v[3]; | |
254 | vtx1->GetPosition(v); | |
255 | return CosPointingAngleXY(v); | |
256 | } | |
257 | ||
258 | inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const | |
259 | { | |
260 | Double_t v[3]; | |
261 | vtx1->GetPosition(v); | |
262 | return ImpParXY(v); | |
263 | } | |
264 | ||
265 | inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const | |
266 | { | |
267 | return TMath::Sqrt(PxProng(ip)*PxProng(ip)+PyProng(ip)*PyProng(ip)); | |
268 | } | |
269 | ||
270 | inline Double_t AliAODRecoDecay::PProng(Int_t ip) const | |
271 | { | |
272 | return TMath::Sqrt(PtProng(ip)*PtProng(ip)+PzProng(ip)*PzProng(ip)); | |
273 | } | |
274 | ||
275 | inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
276 | { | |
277 | Double_t v[3]; | |
278 | vtx1->GetPosition(v); | |
279 | return QlProngFlightLine(ip,v); | |
280 | } | |
281 | ||
282 | inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
283 | { | |
284 | Double_t v[3]; | |
285 | vtx1->GetPosition(v); | |
286 | return QtProngFlightLine(ip,v); | |
287 | } | |
288 | ||
5cc73331 | 289 | inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca) |
7de7497b | 290 | { |
291 | if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) { | |
292 | printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2"); | |
293 | return; | |
294 | } | |
295 | if(fDCA) delete [] fDCA; | |
5cc73331 | 296 | fDCA = new Double32_t[nDCA]; |
7de7497b | 297 | for(Int_t i=0;i<nDCA;i++) |
298 | fDCA[i] = dca[i]; | |
299 | return; | |
300 | } | |
301 | ||
5cc73331 | 302 | inline void AliAODRecoDecay::SetDCA(Double_t dca) |
7de7497b | 303 | { |
5cc73331 | 304 | Double_t ddca[1]; ddca[0]=dca; |
7de7497b | 305 | SetDCAs(1,ddca); |
306 | return; | |
307 | } | |
308 | ||
309 | inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid) | |
310 | { | |
311 | if(nprongs!=GetNProngs()) { | |
312 | printf("Wrong number of prongs"); | |
313 | return; | |
314 | } | |
315 | if(fPID) delete [] fPID; | |
5cc73331 | 316 | fPID = new Double32_t[nprongs*5]; |
7de7497b | 317 | for(Int_t i=0;i<nprongs;i++) |
318 | for(Int_t j=0;j<5;j++) | |
319 | fPID[i*5+j] = pid[i*5+j]; | |
320 | return; | |
321 | } | |
322 | ||
323 | inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const | |
324 | { | |
325 | for(Int_t j=0;j<5;j++) | |
326 | pid[j] = fPID[ip*5+j]; | |
327 | return; | |
328 | } | |
329 | ||
330 | ||
331 | ||
332 | #endif |