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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;} | |
a11de4a0 | 39 | AliAODVertex* GetSecondaryVtx() const { return (((AliAODVertex*)fSecondaryVtx.GetObject()) ? (AliAODVertex*)fSecondaryVtx.GetObject() : GetOwnSecondaryVtx()); } |
40 | void SetOwnSecondaryVtx(AliAODVertex *vtx2) {fOwnSecondaryVtx=vtx2;} | |
41 | AliAODVertex* GetOwnSecondaryVtx() const {return fOwnSecondaryVtx;} | |
7de7497b | 42 | void GetSecondaryVtx(Double_t vtx[3]) const; |
5cc73331 | 43 | Double_t GetReducedChi2() const {return GetSecondaryVtx()->GetChi2perNDF();} |
7de7497b | 44 | Short_t Charge() const {return fCharge;} |
45 | Short_t GetCharge() const {return fCharge;} | |
46 | void SetCharge(Short_t charge=0) {fCharge=charge;} | |
47 | ||
48 | // PID | |
49 | void SetPID(Int_t nprongs,Double_t *pid); | |
50 | Double_t *GetPID() const { return fPID; } | |
51 | void GetPIDProng(Int_t ip,Double_t *pid) const; | |
52 | virtual const Double_t *PID() const { return fPID; } | |
53 | ||
54 | // prong-to-prong DCAs | |
5cc73331 | 55 | void SetDCAs(Int_t nDCA,Double_t *dca); |
56 | void SetDCA(Double_t dca); // 2 prong | |
57 | Double_t GetDCA(Int_t i=0) const {return fDCA[i];} | |
7de7497b | 58 | |
59 | //event and run number | |
60 | void SetEventRunNumbers(Int_t en,Int_t rn) | |
61 | { fEventNumber=en; fRunNumber=rn; return; } | |
62 | Int_t GetEventNumber() const { return fEventNumber; } | |
63 | Int_t GetRunNumber() const { return fRunNumber; } | |
64 | ||
65 | // kinematics & topology | |
66 | Double_t Px() const; | |
67 | Double_t Py() const; | |
68 | Double_t Pz() const; | |
69 | Double_t P() const {return TMath::Sqrt(Px()*Px()+Py()*Py()+Pz()*Pz());} | |
70 | Double_t Pt() const {return TMath::Sqrt(Px()*Px()+Py()*Py());} | |
71 | Double_t OneOverPt() const {return (Pt() ? 1./Pt() : 0.);} | |
c683ddc2 | 72 | Bool_t PxPyPz(Double_t p[3]) const { p[0] = Px(); p[1] = Py(); p[2] = Pz(); return kTRUE; } |
1eab4b5c | 73 | Double_t Phi() const {return TMath::Pi()+TMath::ATan2(-Py(),-Px());} |
7de7497b | 74 | Double_t Theta() const {return 0.5*TMath::Pi()-TMath::ATan(Pz()/(Pt()+1.e-13));} |
75 | Double_t Eta() const {return 0.5*TMath::Log((P()+Pz())/(P()-Pz()+1.e-13));} | |
c683ddc2 | 76 | Double_t Xv() const { return GetSecVtxX(); } |
77 | Double_t Yv() const { return GetSecVtxY(); } | |
78 | Double_t Zv() const { return GetSecVtxZ(); } | |
79 | virtual Bool_t XvYvZv(Double_t x[3]) const { x[0] = Xv(); x[1] = Yv(); x[2] = Zv(); return kTRUE; } | |
7de7497b | 80 | Double_t E(UInt_t pdg) const; |
81 | Double_t Y(UInt_t pdg) const {return 0.5*TMath::Log((E(pdg)+Pz())/(E(pdg)-Pz()+1.e-13));} | |
82 | Double_t DecayLength(Double_t point[3]) const; | |
83 | Double_t DecayLength(AliAODVertex *vtx1) const | |
5cc73331 | 84 | {return GetSecondaryVtx()->DistanceToVertex(vtx1);} |
7de7497b | 85 | Double_t DecayLengthError(AliAODVertex *vtx1) const |
5cc73331 | 86 | {return GetSecondaryVtx()->ErrorDistanceToVertex(vtx1);} |
7de7497b | 87 | Double_t NormalizedDecayLength(AliAODVertex *vtx1) const |
88 | {return DecayLength(vtx1)/DecayLengthError(vtx1);} | |
89 | Double_t DecayLengthXY(Double_t point[3]) const; | |
90 | Double_t DecayLengthXY(AliAODVertex *vtx1) const | |
5cc73331 | 91 | {return GetSecondaryVtx()->DistanceXYToVertex(vtx1);} |
7de7497b | 92 | Double_t DecayLengthXYError(AliAODVertex *vtx1) const |
5cc73331 | 93 | {return GetSecondaryVtx()->ErrorDistanceXYToVertex(vtx1);} |
7de7497b | 94 | Double_t NormalizedDecayLengthXY(AliAODVertex *vtx1) const |
95 | {return DecayLengthXY(vtx1)/DecayLengthXYError(vtx1);} | |
96 | Double_t Ct(UInt_t pdg,Double_t point[3]) const; | |
97 | Double_t Ct(UInt_t pdg,AliAODVertex *vtx1) const; | |
98 | Double_t CosPointingAngle(Double_t point[3]) const; | |
99 | Double_t CosPointingAngle(AliAODVertex *vtx1) const; | |
100 | Double_t CosPointingAngleXY(Double_t point[3]) const; | |
101 | Double_t CosPointingAngleXY(AliAODVertex *vtx1) const; | |
102 | Double_t CosThetaStar(Int_t ip,UInt_t pdgvtx,UInt_t pdgprong0,UInt_t pdgprong1) const; | |
103 | Double_t InvMass(Int_t npdg,UInt_t *pdg) const; | |
104 | Double_t ImpParXY(Double_t point[3]) const; | |
105 | Double_t ImpParXY(AliAODVertex *vtx1) const; | |
106 | ||
107 | // prongs | |
5cc73331 | 108 | //Int_t GetNProngs() const {return GetSecondaryVtx()->GetNDaughters();} |
7de7497b | 109 | Int_t GetNProngs() const {return fNProngs;} |
110 | ||
111 | Short_t ChargeProng(Int_t ip) const; | |
112 | Double_t Getd0Prong(Int_t ip) const {return fd0[ip];} | |
113 | Double_t Prodd0d0(Int_t ip1=0,Int_t ip2=0) const {return fd0[ip1]*fd0[ip2];} | |
114 | Double_t PxProng(Int_t ip) const {return fPx[ip];} | |
115 | Double_t PyProng(Int_t ip) const {return fPy[ip];} | |
116 | Double_t PzProng(Int_t ip) const {return fPz[ip];} | |
117 | Double_t PtProng(Int_t ip) const; | |
118 | Double_t PProng(Int_t ip) const; | |
119 | Double_t PhiProng(Int_t ip) const | |
120 | {return TMath::ATan2(PyProng(ip),PxProng(ip));} | |
121 | Double_t ThetaProng(Int_t ip) const | |
122 | {return 0.5*TMath::Pi()-TMath::ATan(PzProng(ip)/(PtProng(ip)+1.e-13));} | |
123 | Double_t EtaProng(Int_t ip) const | |
124 | {return -TMath::Log(TMath::Tan(0.5*ThetaProng(ip)));} | |
125 | Double_t EProng(Int_t ip,UInt_t pdg) const; | |
126 | Double_t YProng(Int_t ip,UInt_t pdg) const | |
127 | {return 0.5*TMath::Log((EProng(ip,pdg)+PzProng(ip))/(EProng(ip,pdg)-PzProng(ip)+1.e-13));} | |
128 | Double_t Alpha() const; // for Armenteros-Podolanski plot (V0's) | |
129 | Double_t QlProng(Int_t ip) const; | |
130 | Double_t QtProng(Int_t ip=0) const; // for Armenteros-Podolanski plot (V0's) | |
131 | Double_t QlProngFlightLine(Int_t ip,Double_t point[3]) const; | |
132 | Double_t QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
133 | Double_t QtProngFlightLine(Int_t ip,Double_t point[3]) const; | |
134 | Double_t QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const; | |
135 | Double_t InvMass2Prongs(Int_t ip1,Int_t ip2,UInt_t pdg1,UInt_t pdg2) const; | |
136 | Double_t ProngsRelAngle(Int_t ip1=0,Int_t ip2=1) const; | |
137 | ||
138 | // relate to other objects | |
139 | //Double_t DistanceToVertex(AliAODVertex *vtx) // distance to a AliAODVertex | |
140 | //Double_t DistanceToTrack(AliAODTrack *trk) // distance to a AliAODTrack | |
141 | ||
142 | ||
143 | ||
144 | void Print(Option_t* option = "") const; | |
5cc73331 | 145 | //void PrintIndices() const {GetSecondaryVtx()->PrintIndices();} |
7de7497b | 146 | |
ff7c57dd | 147 | // dummy functions for inheritance from AliVParticle |
7de7497b | 148 | Double_t E() const |
149 | {printf("Dummy function; use AliAODRecoDecay::E(UInt_t pdg) instead"); return (Double_t)-999.;} | |
150 | Double_t Y() const | |
151 | {printf("Dummy function; use AliAODRecoDecay::Y(UInt_t pdg) instead"); return (Double_t)-999.;} | |
152 | Double_t M() const | |
153 | {printf("Dummy function"); return (Double_t)-999.;} | |
3c43fb2b | 154 | Int_t GetLabel() const {return -1;} |
7de7497b | 155 | protected: |
156 | ||
5cc73331 | 157 | TRef fSecondaryVtx; // decay vertex |
a11de4a0 | 158 | AliAODVertex *fOwnSecondaryVtx; // temporary solution (to work outside AliAODEvent) |
5cc73331 | 159 | Short_t fCharge; // charge, use this convention for prongs charges: |
160 | // if(charge== 0) even-index prongs are + | |
161 | // odd-index prongs are - | |
162 | // if(charge==+1) even-index prongs are + | |
163 | // odd-index prongs are - | |
164 | // if(charge==-1) even-index prongs are - | |
165 | // odd-index prongs are + | |
7de7497b | 166 | |
167 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
5cc73331 | 168 | Int_t fNProngs; // number of prongs |
169 | Int_t fNDCA; // number of dca's | |
170 | Int_t fNPID; // number of PID probabilities | |
171 | Double32_t *fPx; //[fNProngs] px of tracks at the vertex [GeV/c] | |
172 | Double32_t *fPy; //[fNProngs] py of tracks at the vertex [GeV/c] | |
173 | Double32_t *fPz; //[fNProngs] pz of tracks at the vertex [GeV/c] | |
174 | Double32_t *fd0; //[fNProngs] rphi impact params w.r.t. Primary Vtx [cm] | |
175 | Double32_t *fDCA; //[fNDCA] prong-to-prong DCA [cm] | |
176 | // convention:fDCA[0]=p0p1,fDCA[1]=p0p2,fDCA[2]=p1p2,... | |
177 | Double32_t *fPID; //[fNPID] combined pid | |
178 | // (combined detector response probabilities) | |
7de7497b | 179 | |
180 | // TEMPORARY, to be removed when we do analysis on AliAODEvent | |
181 | Int_t fEventNumber; | |
182 | Int_t fRunNumber; | |
183 | // TO BE PUT IN SPECIAL MC CLASS | |
184 | //Bool_t fSignal; // TRUE if signal, FALSE if background (for simulation) | |
7de7497b | 185 | //Int_t fTrkNum[2]; // numbers of the two decay tracks |
186 | //Int_t fPdg[2]; // PDG codes of the two tracks (for sim.) | |
187 | //Int_t fMum[2]; // PDG codes of the mothers (for sim.) | |
188 | ||
189 | // | |
190 | ||
0fc99302 | 191 | ClassDef(AliAODRecoDecay,3) // base class for AOD reconstructed decays |
7de7497b | 192 | }; |
193 | ||
194 | ||
195 | inline Short_t AliAODRecoDecay::ChargeProng(Int_t ip) const | |
196 | { | |
197 | if(fCharge==0 || fCharge==+1) { | |
198 | if(ip%2==0) { | |
199 | return (Short_t)1; | |
200 | } else { | |
201 | return (Short_t)-1; | |
202 | } | |
203 | } else { // fCharge==-1 | |
204 | if(ip%2==0) { | |
205 | return (Short_t)-1; | |
206 | } else { | |
207 | return (Short_t)1; | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
212 | inline Double_t AliAODRecoDecay::RadiusSecVtx() const | |
213 | { | |
214 | return TMath::Sqrt(GetSecVtxX()*GetSecVtxX()+GetSecVtxY()*GetSecVtxY()); | |
215 | } | |
216 | ||
217 | inline void AliAODRecoDecay::GetSecondaryVtx(Double_t vtx[3]) const | |
218 | { | |
5cc73331 | 219 | GetSecondaryVtx()->GetPosition(vtx); |
7de7497b | 220 | return; |
221 | } | |
222 | ||
223 | inline Double_t AliAODRecoDecay::Px() const | |
224 | { | |
225 | Double_t px=0.; | |
226 | for(Int_t i=0;i<GetNProngs();i++) px+=PxProng(i); | |
227 | return px; | |
228 | } | |
229 | ||
230 | inline Double_t AliAODRecoDecay::Py() const | |
231 | { | |
232 | Double_t py=0.; | |
233 | for(Int_t i=0;i<GetNProngs();i++) py+=PyProng(i); | |
234 | return py; | |
235 | } | |
236 | ||
237 | inline Double_t AliAODRecoDecay::Pz() const | |
238 | { | |
239 | Double_t pz=0.; | |
240 | for(Int_t i=0;i<GetNProngs();i++) pz+=PzProng(i); | |
241 | return pz; | |
242 | } | |
243 | ||
244 | inline Double_t AliAODRecoDecay::Ct(UInt_t pdg,AliAODVertex *vtx1) const | |
245 | { | |
246 | Double_t v[3]; | |
247 | vtx1->GetPosition(v); | |
248 | return Ct(pdg,v); | |
249 | } | |
250 | ||
251 | inline Double_t AliAODRecoDecay::CosPointingAngle(AliAODVertex *vtx1) const | |
252 | { | |
253 | Double_t v[3]; | |
254 | vtx1->GetPosition(v); | |
255 | return CosPointingAngle(v); | |
256 | } | |
257 | ||
258 | inline Double_t AliAODRecoDecay::CosPointingAngleXY(AliAODVertex *vtx1) const | |
259 | { | |
260 | Double_t v[3]; | |
261 | vtx1->GetPosition(v); | |
262 | return CosPointingAngleXY(v); | |
263 | } | |
264 | ||
265 | inline Double_t AliAODRecoDecay::ImpParXY(AliAODVertex *vtx1) const | |
266 | { | |
267 | Double_t v[3]; | |
268 | vtx1->GetPosition(v); | |
269 | return ImpParXY(v); | |
270 | } | |
271 | ||
272 | inline Double_t AliAODRecoDecay::PtProng(Int_t ip) const | |
273 | { | |
274 | return TMath::Sqrt(PxProng(ip)*PxProng(ip)+PyProng(ip)*PyProng(ip)); | |
275 | } | |
276 | ||
277 | inline Double_t AliAODRecoDecay::PProng(Int_t ip) const | |
278 | { | |
279 | return TMath::Sqrt(PtProng(ip)*PtProng(ip)+PzProng(ip)*PzProng(ip)); | |
280 | } | |
281 | ||
282 | inline Double_t AliAODRecoDecay::QlProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
283 | { | |
284 | Double_t v[3]; | |
285 | vtx1->GetPosition(v); | |
286 | return QlProngFlightLine(ip,v); | |
287 | } | |
288 | ||
289 | inline Double_t AliAODRecoDecay::QtProngFlightLine(Int_t ip,AliAODVertex *vtx1) const | |
290 | { | |
291 | Double_t v[3]; | |
292 | vtx1->GetPosition(v); | |
293 | return QtProngFlightLine(ip,v); | |
294 | } | |
295 | ||
5cc73331 | 296 | inline void AliAODRecoDecay::SetDCAs(Int_t nDCA,Double_t *dca) |
7de7497b | 297 | { |
298 | if(nDCA!=(GetNProngs()*(GetNProngs()-1)/2)) { | |
299 | printf("Wrong number of DCAs, must be nProngs*(nProngs-1)/2"); | |
300 | return; | |
301 | } | |
302 | if(fDCA) delete [] fDCA; | |
94de4057 | 303 | fNDCA = nDCA; |
5cc73331 | 304 | fDCA = new Double32_t[nDCA]; |
7de7497b | 305 | for(Int_t i=0;i<nDCA;i++) |
306 | fDCA[i] = dca[i]; | |
307 | return; | |
308 | } | |
309 | ||
5cc73331 | 310 | inline void AliAODRecoDecay::SetDCA(Double_t dca) |
7de7497b | 311 | { |
5cc73331 | 312 | Double_t ddca[1]; ddca[0]=dca; |
7de7497b | 313 | SetDCAs(1,ddca); |
314 | return; | |
315 | } | |
316 | ||
317 | inline void AliAODRecoDecay::SetPID(Int_t nprongs,Double_t *pid) | |
318 | { | |
319 | if(nprongs!=GetNProngs()) { | |
320 | printf("Wrong number of prongs"); | |
321 | return; | |
322 | } | |
323 | if(fPID) delete [] fPID; | |
94de4057 | 324 | fNPID = nprongs; |
5cc73331 | 325 | fPID = new Double32_t[nprongs*5]; |
7de7497b | 326 | for(Int_t i=0;i<nprongs;i++) |
327 | for(Int_t j=0;j<5;j++) | |
328 | fPID[i*5+j] = pid[i*5+j]; | |
329 | return; | |
330 | } | |
331 | ||
332 | inline void AliAODRecoDecay::GetPIDProng(Int_t ip,Double_t *pid) const | |
333 | { | |
334 | for(Int_t j=0;j<5;j++) | |
335 | pid[j] = fPID[ip*5+j]; | |
336 | return; | |
337 | } | |
338 | ||
339 | ||
340 | ||
341 | #endif |