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df9db588 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-2007, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | //------------------------------------------------------------------------- | |
4f6e22bd | 19 | // AOD track implementation of AliVTrack |
df9db588 | 20 | // Author: Markus Oldenburg, CERN |
0c5f89fb | 21 | // Markus.Oldenburg@cern.ch |
df9db588 | 22 | //------------------------------------------------------------------------- |
23 | ||
086400fc | 24 | #include <TVector3.h> |
8ac4fa64 | 25 | #include "AliLog.h" |
6dc40b1c | 26 | #include "AliExternalTrackParam.h" |
27 | #include "AliVVertex.h" | |
df9db588 | 28 | #include "AliAODTrack.h" |
aab77ed0 | 29 | #include "AliAODEvent.h" |
df9db588 | 30 | |
31 | ClassImp(AliAODTrack) | |
32 | ||
33 | //______________________________________________________________________________ | |
34 | AliAODTrack::AliAODTrack() : | |
4f6e22bd | 35 | AliVTrack(), |
f43586f0 | 36 | fRAtAbsorberEnd(0.), |
1912763f | 37 | fChi2perNDF(-999.), |
9333290e | 38 | fChi2MatchTrigger(0.), |
6efb741f | 39 | fFlags(0), |
df9db588 | 40 | fLabel(-999), |
1912763f | 41 | fITSMuonClusterMap(0), |
0a2dcc83 | 42 | fMUONtrigHitsMapTrg(0), |
43 | fMUONtrigHitsMapTrk(0), | |
9333290e | 44 | fFilterMap(0), |
bcabd0e4 | 45 | fTPCFitMap(), |
d999f2e6 | 46 | fTPCClusterMap(), |
47 | fTPCSharedMap(), | |
3c01c166 | 48 | fTPCnclsF(0), |
820214a7 | 49 | fTPCNCrossedRows(0), |
02153d58 | 50 | fID(-999), |
9333290e | 51 | fCharge(-99), |
e1c744ca | 52 | fType(kUndef), |
a7d9ab9e | 53 | fCaloIndex(kEMCALNoMatch), |
9333290e | 54 | fCovMatrix(NULL), |
7be1db84 | 55 | fDetPid(NULL), |
ed15417e | 56 | fProdVertex(NULL), |
57 | fTrackPhiOnEMCal(-999), | |
aab77ed0 | 58 | fTrackEtaOnEMCal(-999), |
539a5a59 | 59 | fTPCsignalTuned(0), |
aab77ed0 | 60 | fAODEvent(NULL) |
df9db588 | 61 | { |
62 | // default constructor | |
63 | ||
64 | SetP(); | |
65 | SetPosition((Float_t*)NULL); | |
6c954176 | 66 | SetXYAtDCA(-999., -999.); |
67 | SetPxPyPzAtDCA(-999., -999., -999.); | |
df9db588 | 68 | SetPID((Float_t*)NULL); |
69 | } | |
70 | ||
71 | //______________________________________________________________________________ | |
02153d58 | 72 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 73 | Int_t label, |
74 | Double_t p[3], | |
75 | Bool_t cartesian, | |
76 | Double_t x[3], | |
77 | Bool_t isDCA, | |
78 | Double_t covMatrix[21], | |
79 | Short_t charge, | |
80 | UChar_t itsClusMap, | |
81 | Double_t pid[10], | |
82 | AliAODVertex *prodVertex, | |
1912763f | 83 | Bool_t usedForVtxFit, |
dc825b15 | 84 | Bool_t usedForPrimVtxFit, |
ec40c484 | 85 | AODTrk_t ttype, |
862ce351 | 86 | UInt_t selectInfo, |
87 | Float_t chi2perNDF) : | |
4f6e22bd | 88 | AliVTrack(), |
f43586f0 | 89 | fRAtAbsorberEnd(0.), |
862ce351 | 90 | fChi2perNDF(chi2perNDF), |
9333290e | 91 | fChi2MatchTrigger(0.), |
6efb741f | 92 | fFlags(0), |
df9db588 | 93 | fLabel(label), |
6c954176 | 94 | fITSMuonClusterMap(0), |
0a2dcc83 | 95 | fMUONtrigHitsMapTrg(0), |
96 | fMUONtrigHitsMapTrk(0), | |
9333290e | 97 | fFilterMap(selectInfo), |
bcabd0e4 | 98 | fTPCFitMap(), |
d999f2e6 | 99 | fTPCClusterMap(), |
100 | fTPCSharedMap(), | |
3c01c166 | 101 | fTPCnclsF(0), |
820214a7 | 102 | fTPCNCrossedRows(0), |
02153d58 | 103 | fID(id), |
9333290e | 104 | fCharge(charge), |
e1c744ca | 105 | fType(ttype), |
a7d9ab9e | 106 | fCaloIndex(kEMCALNoMatch), |
9333290e | 107 | fCovMatrix(NULL), |
7be1db84 | 108 | fDetPid(NULL), |
ed15417e | 109 | fProdVertex(prodVertex), |
110 | fTrackPhiOnEMCal(-999), | |
aab77ed0 | 111 | fTrackEtaOnEMCal(-999), |
539a5a59 | 112 | fTPCsignalTuned(0), |
aab77ed0 | 113 | fAODEvent(NULL) |
df9db588 | 114 | { |
115 | // constructor | |
116 | ||
117 | SetP(p, cartesian); | |
118 | SetPosition(x, isDCA); | |
6c954176 | 119 | SetXYAtDCA(-999., -999.); |
120 | SetPxPyPzAtDCA(-999., -999., -999.); | |
1912763f | 121 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 122 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 123 | if(covMatrix) SetCovMatrix(covMatrix); |
124 | SetPID(pid); | |
6c954176 | 125 | SetITSClusterMap(itsClusMap); |
df9db588 | 126 | } |
127 | ||
128 | //______________________________________________________________________________ | |
02153d58 | 129 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 130 | Int_t label, |
131 | Float_t p[3], | |
132 | Bool_t cartesian, | |
133 | Float_t x[3], | |
134 | Bool_t isDCA, | |
135 | Float_t covMatrix[21], | |
136 | Short_t charge, | |
137 | UChar_t itsClusMap, | |
138 | Float_t pid[10], | |
139 | AliAODVertex *prodVertex, | |
1912763f | 140 | Bool_t usedForVtxFit, |
dc825b15 | 141 | Bool_t usedForPrimVtxFit, |
ec40c484 | 142 | AODTrk_t ttype, |
862ce351 | 143 | UInt_t selectInfo, |
144 | Float_t chi2perNDF) : | |
4f6e22bd | 145 | AliVTrack(), |
f43586f0 | 146 | fRAtAbsorberEnd(0.), |
862ce351 | 147 | fChi2perNDF(chi2perNDF), |
9333290e | 148 | fChi2MatchTrigger(0.), |
6efb741f | 149 | fFlags(0), |
df9db588 | 150 | fLabel(label), |
6c954176 | 151 | fITSMuonClusterMap(0), |
0a2dcc83 | 152 | fMUONtrigHitsMapTrg(0), |
153 | fMUONtrigHitsMapTrk(0), | |
9333290e | 154 | fFilterMap(selectInfo), |
bcabd0e4 | 155 | fTPCFitMap(), |
d999f2e6 | 156 | fTPCClusterMap(), |
157 | fTPCSharedMap(), | |
3c01c166 | 158 | fTPCnclsF(0), |
820214a7 | 159 | fTPCNCrossedRows(0), |
02153d58 | 160 | fID(id), |
9333290e | 161 | fCharge(charge), |
e1c744ca | 162 | fType(ttype), |
a7d9ab9e | 163 | fCaloIndex(kEMCALNoMatch), |
9333290e | 164 | fCovMatrix(NULL), |
7be1db84 | 165 | fDetPid(NULL), |
ed15417e | 166 | fProdVertex(prodVertex), |
167 | fTrackPhiOnEMCal(-999), | |
aab77ed0 | 168 | fTrackEtaOnEMCal(-999), |
539a5a59 | 169 | fTPCsignalTuned(0), |
aab77ed0 | 170 | fAODEvent(NULL) |
df9db588 | 171 | { |
172 | // constructor | |
173 | ||
174 | SetP(p, cartesian); | |
175 | SetPosition(x, isDCA); | |
6c954176 | 176 | SetXYAtDCA(-999., -999.); |
177 | SetPxPyPzAtDCA(-999., -999., -999.); | |
1912763f | 178 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 179 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 180 | if(covMatrix) SetCovMatrix(covMatrix); |
181 | SetPID(pid); | |
6c954176 | 182 | SetITSClusterMap(itsClusMap); |
df9db588 | 183 | } |
184 | ||
df9db588 | 185 | //______________________________________________________________________________ |
186 | AliAODTrack::~AliAODTrack() | |
187 | { | |
188 | // destructor | |
189 | delete fCovMatrix; | |
7450f8ab | 190 | delete fDetPid; |
df9db588 | 191 | } |
192 | ||
193 | ||
194 | //______________________________________________________________________________ | |
195 | AliAODTrack::AliAODTrack(const AliAODTrack& trk) : | |
4f6e22bd | 196 | AliVTrack(trk), |
f43586f0 | 197 | fRAtAbsorberEnd(trk.fRAtAbsorberEnd), |
1912763f | 198 | fChi2perNDF(trk.fChi2perNDF), |
9333290e | 199 | fChi2MatchTrigger(trk.fChi2MatchTrigger), |
6efb741f | 200 | fFlags(trk.fFlags), |
df9db588 | 201 | fLabel(trk.fLabel), |
1912763f | 202 | fITSMuonClusterMap(trk.fITSMuonClusterMap), |
0a2dcc83 | 203 | fMUONtrigHitsMapTrg(trk.fMUONtrigHitsMapTrg), |
204 | fMUONtrigHitsMapTrk(trk.fMUONtrigHitsMapTrk), | |
9333290e | 205 | fFilterMap(trk.fFilterMap), |
bcabd0e4 | 206 | fTPCFitMap(trk.fTPCFitMap), |
d999f2e6 | 207 | fTPCClusterMap(trk.fTPCClusterMap), |
208 | fTPCSharedMap(trk.fTPCSharedMap), | |
3c01c166 | 209 | fTPCnclsF(trk.fTPCnclsF), |
820214a7 | 210 | fTPCNCrossedRows(trk.fTPCNCrossedRows), |
02153d58 | 211 | fID(trk.fID), |
9333290e | 212 | fCharge(trk.fCharge), |
e1c744ca | 213 | fType(trk.fType), |
a7d9ab9e | 214 | fCaloIndex(trk.fCaloIndex), |
9333290e | 215 | fCovMatrix(NULL), |
7be1db84 | 216 | fDetPid(NULL), |
ed15417e | 217 | fProdVertex(trk.fProdVertex), |
218 | fTrackPhiOnEMCal(trk.fTrackPhiOnEMCal), | |
aab77ed0 | 219 | fTrackEtaOnEMCal(trk.fTrackEtaOnEMCal), |
539a5a59 | 220 | fTPCsignalTuned(trk.fTPCsignalTuned), |
aab77ed0 | 221 | fAODEvent(trk.fAODEvent) |
df9db588 | 222 | { |
223 | // Copy constructor | |
224 | ||
225 | trk.GetP(fMomentum); | |
226 | trk.GetPosition(fPosition); | |
6c954176 | 227 | SetXYAtDCA(trk.XAtDCA(), trk.YAtDCA()); |
228 | SetPxPyPzAtDCA(trk.PxAtDCA(), trk.PyAtDCA(), trk.PzAtDCA()); | |
1912763f | 229 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 230 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
5d62ce04 | 231 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
7be1db84 | 232 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); |
df9db588 | 233 | SetPID(trk.fPID); |
df9db588 | 234 | } |
235 | ||
236 | //______________________________________________________________________________ | |
237 | AliAODTrack& AliAODTrack::operator=(const AliAODTrack& trk) | |
238 | { | |
239 | // Assignment operator | |
240 | if(this!=&trk) { | |
241 | ||
4f6e22bd | 242 | AliVTrack::operator=(trk); |
df9db588 | 243 | |
244 | trk.GetP(fMomentum); | |
245 | trk.GetPosition(fPosition); | |
6c954176 | 246 | SetXYAtDCA(trk.XAtDCA(), trk.YAtDCA()); |
247 | SetPxPyPzAtDCA(trk.PxAtDCA(), trk.PyAtDCA(), trk.PzAtDCA()); | |
05f9607e | 248 | fRAtAbsorberEnd = trk.fRAtAbsorberEnd; |
249 | fChi2perNDF = trk.fChi2perNDF; | |
250 | fChi2MatchTrigger = trk.fChi2MatchTrigger; | |
251 | trk.GetPID(fPID); | |
252 | fFlags = trk.fFlags; | |
253 | fLabel = trk.fLabel; | |
9333290e | 254 | fITSMuonClusterMap = trk.fITSMuonClusterMap; |
0a2dcc83 | 255 | fMUONtrigHitsMapTrg = trk.fMUONtrigHitsMapTrg; |
256 | fMUONtrigHitsMapTrk = trk.fMUONtrigHitsMapTrk; | |
05f9607e | 257 | fFilterMap = trk.fFilterMap; |
bcabd0e4 | 258 | fTPCFitMap = trk.fTPCFitMap; |
05f9607e | 259 | fTPCClusterMap = trk.fTPCClusterMap; |
260 | fTPCSharedMap = trk.fTPCSharedMap; | |
261 | fTPCnclsF = trk.fTPCnclsF; | |
820214a7 | 262 | fTPCNCrossedRows = trk.fTPCNCrossedRows; |
05f9607e | 263 | fID = trk.fID; |
264 | fCharge = trk.fCharge; | |
265 | fType = trk.fType; | |
266 | fCaloIndex = trk.fCaloIndex; | |
ed15417e | 267 | fTrackPhiOnEMCal = trk.fTrackPhiOnEMCal; |
268 | fTrackEtaOnEMCal = trk.fTrackEtaOnEMCal; | |
539a5a59 | 269 | fTPCsignalTuned = trk.fTPCsignalTuned; |
a7d9ab9e | 270 | |
df9db588 | 271 | delete fCovMatrix; |
5d62ce04 | 272 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
df9db588 | 273 | else fCovMatrix=NULL; |
df9db588 | 274 | |
05f9607e | 275 | |
276 | fProdVertex = trk.fProdVertex; | |
1912763f | 277 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 278 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
7be1db84 | 279 | |
280 | delete fDetPid; | |
281 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); | |
282 | else fDetPid=NULL; | |
05f9607e | 283 | |
284 | ||
df9db588 | 285 | } |
286 | ||
287 | return *this; | |
288 | } | |
289 | ||
4697e4fb | 290 | //______________________________________________________________________________ |
291 | Double_t AliAODTrack::M(AODTrkPID_t pid) const | |
292 | { | |
293 | // Returns the mass. | |
9861edc0 | 294 | // Masses for nuclei don't exist in the PDG tables, therefore they were put by hand. |
4697e4fb | 295 | |
296 | switch (pid) { | |
297 | ||
298 | case kElectron : | |
9861edc0 | 299 | return 0.000510999; //TDatabasePDG::Instance()->GetParticle(11/*::kElectron*/)->Mass(); |
4697e4fb | 300 | break; |
301 | ||
302 | case kMuon : | |
9861edc0 | 303 | return 0.1056584; //TDatabasePDG::Instance()->GetParticle(13/*::kMuonMinus*/)->Mass(); |
4697e4fb | 304 | break; |
305 | ||
306 | case kPion : | |
9861edc0 | 307 | return 0.13957; //TDatabasePDG::Instance()->GetParticle(211/*::kPiPlus*/)->Mass(); |
4697e4fb | 308 | break; |
309 | ||
310 | case kKaon : | |
9861edc0 | 311 | return 0.4937; //TDatabasePDG::Instance()->GetParticle(321/*::kKPlus*/)->Mass(); |
4697e4fb | 312 | break; |
313 | ||
314 | case kProton : | |
9861edc0 | 315 | return 0.9382720; //TDatabasePDG::Instance()->GetParticle(2212/*::kProton*/)->Mass(); |
4697e4fb | 316 | break; |
317 | ||
318 | case kDeuteron : | |
9861edc0 | 319 | return 1.8756; //TDatabasePDG::Instance()->GetParticle(1000010020)->Mass(); |
4697e4fb | 320 | break; |
321 | ||
322 | case kTriton : | |
9861edc0 | 323 | return 2.8089; //TDatabasePDG::Instance()->GetParticle(1000010030)->Mass(); |
4697e4fb | 324 | break; |
325 | ||
326 | case kHelium3 : | |
9861edc0 | 327 | return 2.8084; //TDatabasePDG::Instance()->GetParticle(1000020030)->Mass(); |
4697e4fb | 328 | break; |
329 | ||
330 | case kAlpha : | |
9861edc0 | 331 | return 3.7274; //TDatabasePDG::Instance()->GetParticle(1000020040)->Mass(); |
4697e4fb | 332 | break; |
333 | ||
334 | case kUnknown : | |
335 | return -999.; | |
336 | break; | |
337 | ||
338 | default : | |
339 | return -999.; | |
340 | } | |
341 | } | |
342 | ||
343 | //______________________________________________________________________________ | |
344 | Double_t AliAODTrack::E(AODTrkPID_t pid) const | |
345 | { | |
346 | // Returns the energy of the particle of a given pid. | |
347 | ||
348 | if (pid != kUnknown) { // particle was identified | |
349 | Double_t m = M(pid); | |
350 | return TMath::Sqrt(P()*P() + m*m); | |
351 | } else { // pid unknown | |
352 | return -999.; | |
353 | } | |
354 | } | |
355 | ||
356 | //______________________________________________________________________________ | |
357 | Double_t AliAODTrack::Y(AODTrkPID_t pid) const | |
358 | { | |
9861edc0 | 359 | // Returns the rapidity of a particle of a given pid. |
4697e4fb | 360 | |
361 | if (pid != kUnknown) { // particle was identified | |
362 | Double_t e = E(pid); | |
363 | Double_t pz = Pz(); | |
364 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
365 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
366 | } else { // energy not known or equal to pz | |
367 | return -999.; | |
368 | } | |
369 | } else { // pid unknown | |
370 | return -999.; | |
371 | } | |
372 | } | |
373 | ||
374 | //______________________________________________________________________________ | |
375 | Double_t AliAODTrack::Y(Double_t m) const | |
376 | { | |
9861edc0 | 377 | // Returns the rapidity of a particle of a given mass. |
4697e4fb | 378 | |
379 | if (m >= 0.) { // mass makes sense | |
380 | Double_t e = E(m); | |
381 | Double_t pz = Pz(); | |
382 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
383 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
384 | } else { // energy not known or equal to pz | |
385 | return -999.; | |
386 | } | |
387 | } else { // pid unknown | |
388 | return -999.; | |
389 | } | |
390 | } | |
391 | ||
392 | //______________________________________________________________________________ | |
393 | AliAODTrack::AODTrkPID_t AliAODTrack::GetMostProbablePID() const | |
394 | { | |
395 | // Returns the most probable PID array element. | |
396 | ||
397 | Int_t nPID = 10; | |
7ba6f91a | 398 | AODTrkPID_t loc = kUnknown; |
399 | Double_t max = 0.; | |
400 | Bool_t allTheSame = kTRUE; | |
401 | ||
402 | for (Int_t iPID = 0; iPID < nPID; iPID++) { | |
403 | if (fPID[iPID] >= max) { | |
404 | if (fPID[iPID] > max) { | |
405 | allTheSame = kFALSE; | |
406 | max = fPID[iPID]; | |
407 | loc = (AODTrkPID_t)iPID; | |
408 | } else { | |
409 | allTheSame = kTRUE; | |
4697e4fb | 410 | } |
411 | } | |
4697e4fb | 412 | } |
7ba6f91a | 413 | return allTheSame ? kUnknown : loc; |
4697e4fb | 414 | } |
415 | ||
416 | //______________________________________________________________________________ | |
417 | void AliAODTrack::ConvertAliPIDtoAODPID() | |
418 | { | |
419 | // Converts AliPID array. | |
420 | // The numbering scheme is the same for electrons, muons, pions, kaons, and protons. | |
421 | // Everything else has to be set to zero. | |
422 | ||
423 | fPID[kDeuteron] = 0.; | |
8a1418dc | 424 | fPID[kTriton] = 0.; |
425 | fPID[kHelium3] = 0.; | |
426 | fPID[kAlpha] = 0.; | |
427 | fPID[kUnknown] = 0.; | |
4697e4fb | 428 | |
429 | return; | |
430 | } | |
431 | ||
432 | ||
df9db588 | 433 | //______________________________________________________________________________ |
cdd730d0 | 434 | template <typename T> void AliAODTrack::SetP(const T *p, const Bool_t cartesian) |
df9db588 | 435 | { |
8a1418dc | 436 | // Set the momentum |
df9db588 | 437 | |
438 | if (p) { | |
439 | if (cartesian) { | |
16b65f2a | 440 | Double_t pt2 = p[0]*p[0] + p[1]*p[1]; |
0c5f89fb | 441 | Double_t pp = TMath::Sqrt(pt2 + p[2]*p[2]); |
df9db588 | 442 | |
16b65f2a | 443 | fMomentum[0] = TMath::Sqrt(pt2); // pt |
b1a9edc8 | 444 | fMomentum[1] = (pt2 != 0.) ? TMath::Pi()+TMath::ATan2(-p[1], -p[0]) : -999; // phi |
0c5f89fb | 445 | fMomentum[2] = (pp != 0.) ? TMath::ACos(p[2] / pp) : -999.; // theta |
df9db588 | 446 | } else { |
16b65f2a | 447 | fMomentum[0] = p[0]; // pt |
df9db588 | 448 | fMomentum[1] = p[1]; // phi |
449 | fMomentum[2] = p[2]; // theta | |
450 | } | |
451 | } else { | |
452 | fMomentum[0] = -999.; | |
453 | fMomentum[1] = -999.; | |
454 | fMomentum[2] = -999.; | |
455 | } | |
456 | } | |
457 | ||
6e78367a | 458 | /* |
df9db588 | 459 | //______________________________________________________________________________ |
cdd730d0 | 460 | template <typename T> void AliAODTrack::SetPosition(const T *x, const Bool_t dca) |
df9db588 | 461 | { |
462 | // set the position | |
463 | ||
464 | if (x) { | |
465 | if (!dca) { | |
466 | ResetBit(kIsDCA); | |
467 | ||
468 | fPosition[0] = x[0]; | |
469 | fPosition[1] = x[1]; | |
470 | fPosition[2] = x[2]; | |
471 | } else { | |
472 | SetBit(kIsDCA); | |
473 | // don't know any better yet | |
474 | fPosition[0] = -999.; | |
475 | fPosition[1] = -999.; | |
476 | fPosition[2] = -999.; | |
477 | } | |
478 | } else { | |
479 | ResetBit(kIsDCA); | |
480 | ||
481 | fPosition[0] = -999.; | |
482 | fPosition[1] = -999.; | |
483 | fPosition[2] = -999.; | |
484 | } | |
485 | } | |
6e78367a | 486 | */ |
df9db588 | 487 | //______________________________________________________________________________ |
488 | void AliAODTrack::SetDCA(Double_t d, Double_t z) | |
489 | { | |
490 | // set the dca | |
491 | fPosition[0] = d; | |
492 | fPosition[1] = z; | |
493 | fPosition[2] = 0.; | |
494 | SetBit(kIsDCA); | |
495 | } | |
496 | ||
497 | //______________________________________________________________________________ | |
498 | void AliAODTrack::Print(Option_t* /* option */) const | |
499 | { | |
500 | // prints information about AliAODTrack | |
501 | ||
502 | printf("Object name: %s Track type: %s\n", GetName(), GetTitle()); | |
503 | printf(" px = %f\n", Px()); | |
504 | printf(" py = %f\n", Py()); | |
505 | printf(" pz = %f\n", Pz()); | |
506 | printf(" pt = %f\n", Pt()); | |
507 | printf(" 1/pt = %f\n", OneOverPt()); | |
508 | printf(" theta = %f\n", Theta()); | |
509 | printf(" phi = %f\n", Phi()); | |
1912763f | 510 | printf(" chi2/NDF = %f\n", Chi2perNDF()); |
df9db588 | 511 | printf(" charge = %d\n", Charge()); |
df9db588 | 512 | } |
513 | ||
2200238e | 514 | //______________________________________________________________________________ |
515 | void AliAODTrack::SetMatchTrigger(Int_t matchTrig) | |
516 | { | |
517 | // Set the MUON trigger information | |
8ac4fa64 | 518 | switch(matchTrig){ |
e1c744ca | 519 | case 0: // 0 track does not match trigger |
520 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
521 | break; | |
522 | case 1: // 1 track match but does not pass pt cut | |
523 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x40000000; | |
524 | break; | |
525 | case 2: // 2 track match Low pt cut | |
526 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x80000000; | |
527 | break; | |
528 | case 3: // 3 track match High pt cut | |
529 | fITSMuonClusterMap=fITSMuonClusterMap|0xc0000000; | |
530 | break; | |
531 | default: | |
532 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
8ac4fa64 | 533 | AliWarning(Form("unknown case for matchTrig: %d\n",matchTrig)); |
e1c744ca | 534 | } |
535 | } | |
536 | ||
2200238e | 537 | //______________________________________________________________________________ |
538 | Bool_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber, Int_t cathode) const | |
539 | { | |
540 | // return kTRUE if the track fires the given tracking or trigger chamber. | |
541 | // If the chamber is a trigger one: | |
542 | // - if cathode = 0 or 1, the track matches the corresponding cathode | |
543 | // - if cathode = -1, the track matches both cathodes | |
544 | ||
545 | if (MuonChamber < 0) return kFALSE; | |
546 | ||
547 | if (MuonChamber < 10) return TESTBIT(GetMUONClusterMap(), MuonChamber); | |
548 | ||
549 | if (MuonChamber < 14) { | |
550 | ||
551 | if (cathode < 0) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber) && | |
552 | TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+4); | |
553 | ||
554 | if (cathode < 2) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+(1-cathode)*4); | |
555 | ||
e1c744ca | 556 | } |
2200238e | 557 | |
558 | return kFALSE; | |
e1c744ca | 559 | } |
560 | ||
2200238e | 561 | //______________________________________________________________________________ |
562 | Bool_t AliAODTrack::MatchTriggerDigits() const | |
563 | { | |
564 | // return kTRUE if the track matches a digit on both planes of at least 2 trigger chambers | |
6c954176 | 565 | |
2200238e | 566 | Int_t nMatchedChambers = 0; |
567 | for (Int_t ich=10; ich<14; ich++) if (HitsMuonChamber(ich)) nMatchedChambers++; | |
568 | ||
569 | return (nMatchedChambers >= 2); | |
e1c744ca | 570 | } |
c683ddc2 | 571 | |
6dc40b1c | 572 | //______________________________________________________________________________ |
573 | Bool_t AliAODTrack::PropagateToDCA(const AliVVertex *vtx, | |
574 | Double_t b, Double_t maxd, Double_t dz[2], Double_t covar[3]) | |
575 | { | |
576 | // compute impact parameters to the vertex vtx and their covariance matrix | |
577 | // b is the Bz, needed to propagate correctly the track to vertex | |
578 | // only the track parameters are update after the propagation (pos and mom), | |
579 | // not the covariance matrix. This is OK for propagation over short distance | |
580 | // inside the beam pipe. | |
581 | // return kFALSE is something went wrong | |
582 | ||
583 | // convert to AliExternalTrackParam | |
4ec1ca0f | 584 | AliExternalTrackParam etp; etp.CopyFromVTrack(this); |
6dc40b1c | 585 | |
586 | Float_t xstart = etp.GetX(); | |
587 | if(xstart>3.) { | |
588 | AliError("This method can be used only for propagation inside the beam pipe"); | |
589 | return kFALSE; | |
590 | } | |
591 | ||
592 | if(!etp.PropagateToDCA(vtx,b,maxd,dz,covar)) return kFALSE; | |
593 | ||
594 | // update track position and momentum | |
595 | Double_t mom[3]; | |
596 | etp.GetPxPyPz(mom); | |
597 | SetP(mom,kTRUE); | |
598 | etp.GetXYZ(mom); | |
599 | SetPosition(mom,kFALSE); | |
600 | ||
601 | ||
602 | return kTRUE; | |
603 | } | |
604 | ||
c8fe2783 | 605 | //______________________________________________________________________________ |
606 | Bool_t AliAODTrack::GetPxPyPz(Double_t p[3]) const | |
607 | { | |
608 | //--------------------------------------------------------------------- | |
609 | // This function returns the global track momentum components | |
610 | //--------------------------------------------------------------------- | |
611 | p[0]=Px(); p[1]=Py(); p[2]=Pz(); | |
612 | return kTRUE; | |
613 | } | |
9006fe9c | 614 | |
25f906db | 615 | |
616 | //_______________________________________________________________________ | |
617 | Float_t AliAODTrack::GetTPCClusterInfo(Int_t nNeighbours/*=3*/, Int_t type/*=0*/, Int_t row0, Int_t row1, Int_t bitType ) const | |
9006fe9c | 618 | { |
619 | // | |
25f906db | 620 | // TPC cluster information |
9006fe9c | 621 | // type 0: get fraction of found/findable clusters with neighbourhood definition |
622 | // 1: findable clusters with neighbourhood definition | |
623 | // 2: found clusters | |
25f906db | 624 | // bitType: |
625 | // 0 - all cluster used | |
626 | // 1 - clusters used for the kalman update | |
9006fe9c | 627 | // definition of findable clusters: |
628 | // a cluster is defined as findable if there is another cluster | |
629 | // within +- nNeighbours pad rows. The idea is to overcome threshold | |
630 | // effects with a very simple algorithm. | |
631 | // | |
25f906db | 632 | |
9006fe9c | 633 | |
634 | Int_t found=0; | |
635 | Int_t findable=0; | |
636 | Int_t last=-nNeighbours; | |
25f906db | 637 | const TBits & clusterMap = (bitType%2==0) ? fTPCClusterMap : fTPCFitMap; |
9006fe9c | 638 | |
25f906db | 639 | Int_t upperBound=clusterMap.GetNbits(); |
640 | if (upperBound>row1) upperBound=row1; | |
641 | for (Int_t i=row0; i<upperBound; ++i){ | |
9006fe9c | 642 | //look to current row |
25f906db | 643 | if (clusterMap[i]) { |
9006fe9c | 644 | last=i; |
645 | ++found; | |
646 | ++findable; | |
647 | continue; | |
648 | } | |
649 | //look to nNeighbours before | |
650 | if ((i-last)<=nNeighbours) { | |
651 | ++findable; | |
652 | continue; | |
653 | } | |
654 | //look to nNeighbours after | |
655 | for (Int_t j=i+1; j<i+1+nNeighbours; ++j){ | |
25f906db | 656 | if (clusterMap[j]){ |
9006fe9c | 657 | ++findable; |
658 | break; | |
659 | } | |
660 | } | |
661 | } | |
25f906db | 662 | if (type==2) return found; |
9006fe9c | 663 | if (type==1) return findable; |
664 | ||
665 | if (type==0){ | |
666 | Float_t fraction=0; | |
25f906db | 667 | if (findable>0) |
9006fe9c | 668 | fraction=(Float_t)found/(Float_t)findable; |
25f906db | 669 | else |
9006fe9c | 670 | fraction=0; |
671 | return fraction; | |
25f906db | 672 | } |
9006fe9c | 673 | return 0; // undefined type - default value |
674 | } | |
fd21ec8d | 675 | |
25f906db | 676 | |
fd21ec8d | 677 | //______________________________________________________________________________ |
678 | Double_t AliAODTrack::GetTRDslice(Int_t plane, Int_t slice) const { | |
679 | // | |
680 | // return TRD Pid information | |
681 | // | |
682 | if (!fDetPid) return -1; | |
683 | Double32_t *trdSlices=fDetPid->GetTRDsignal(); | |
684 | if (!trdSlices) return -1; | |
685 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
686 | return -1.; | |
687 | } | |
688 | ||
99e9d5ec | 689 | Int_t ns=fDetPid->GetTRDnSlices()/kTRDnPlanes; |
fd21ec8d | 690 | if ((slice<-1) || (slice>=ns)) { |
691 | return -1.; | |
692 | } | |
693 | ||
694 | if(slice>=0) return trdSlices[plane*ns + slice]; | |
695 | ||
696 | // return average of the dEdx measurements | |
697 | Double_t q=0.; Double32_t *s = &trdSlices[plane*ns]; | |
698 | for (Int_t i=0; i<ns; i++, s++) if((*s)>0.) q+=(*s); | |
699 | return q/ns; | |
700 | } | |
701 | ||
99e9d5ec | 702 | //______________________________________________________________________________ |
703 | UChar_t AliAODTrack::GetTRDntrackletsPID() const{ | |
704 | // | |
705 | // return number of tracklets calculated from the slices | |
706 | // | |
707 | if(!fDetPid) return -1; | |
59a8e853 | 708 | return fDetPid->GetTRDntrackletsPID(); |
709 | } | |
99e9d5ec | 710 | |
59a8e853 | 711 | //______________________________________________________________________________ |
712 | UChar_t AliAODTrack::GetTRDncls(Int_t layer) const { | |
713 | // | |
714 | // return number of TRD clusters | |
715 | // | |
716 | if(!fDetPid || layer > 5) return -1; | |
717 | if(layer < 0) return fDetPid->GetTRDncls(); | |
718 | else return fDetPid->GetTRDncls(layer); | |
99e9d5ec | 719 | } |
720 | ||
fd21ec8d | 721 | //______________________________________________________________________________ |
722 | Double_t AliAODTrack::GetTRDmomentum(Int_t plane, Double_t */*sp*/) const | |
723 | { | |
724 | //Returns momentum estimation | |
725 | // in TRD layer "plane". | |
726 | ||
727 | if (!fDetPid) return -1; | |
c997f0f9 | 728 | const Double_t *trdMomentum=fDetPid->GetTRDmomentum(); |
fd21ec8d | 729 | |
730 | if (!trdMomentum) { | |
731 | return -1.; | |
732 | } | |
733 | if ((plane<0) || (plane>=kTRDnPlanes)) { | |
734 | return -1.; | |
735 | } | |
736 | ||
737 | return trdMomentum[plane]; | |
738 | } | |
76e6ee6a | 739 | |
740 | //_______________________________________________________________________ | |
1cecd6e3 | 741 | Int_t AliAODTrack::GetTOFBunchCrossing(Double_t b, Bool_t) const |
76e6ee6a | 742 | { |
743 | // Returns the number of bunch crossings after trigger (assuming 25ns spacing) | |
76e6ee6a | 744 | const double kSpacing = 25e3; // min interbanch spacing |
745 | const double kShift = 0; | |
3f2db92f | 746 | Int_t bcid = kTOFBCNA; // defualt one |
a512bf97 | 747 | if (!IsOn(kTOFout) || !IsOn(kESDpid)) return bcid; // no info |
748 | // | |
749 | double tdif = GetTOFsignal(); | |
750 | if (IsOn(kTIME)) { // integrated time info is there | |
751 | int pid = (int)GetMostProbablePID(); | |
752 | double ttimes[10]; | |
753 | GetIntegratedTimes(ttimes); | |
754 | tdif -= ttimes[pid]; | |
755 | } | |
756 | else { // assume integrated time info from TOF radius and momentum | |
757 | const double kRTOF = 385.; | |
758 | const double kCSpeed = 3.e-2; // cm/ps | |
759 | double p = P(); | |
760 | if (p<0.001) p = 1.0; | |
761 | double m = M(); | |
762 | double path = kRTOF; // mean TOF radius | |
763 | if (TMath::Abs(b)>kAlmost0) { // account for curvature | |
764 | double curv = Pt()/(b*kB2C); | |
765 | if (curv>kAlmost0) { | |
766 | double tgl = Pz()/Pt(); | |
767 | path = 2./curv*TMath::ASin(kRTOF*curv/2.)*TMath::Sqrt(1.+tgl*tgl); | |
768 | } | |
769 | } | |
770 | tdif -= path/kCSpeed*TMath::Sqrt(1.+m*m/(p*p)); | |
771 | } | |
76e6ee6a | 772 | bcid = TMath::Nint((tdif - kShift)/kSpacing); |
773 | return bcid; | |
774 | } | |
086400fc | 775 | |
776 | //_____________________________________________________________________________ | |
777 | Bool_t AliAODTrack::GetXYZAt(Double_t x, Double_t b, Double_t *r) const | |
778 | { | |
779 | //--------------------------------------------------------------------- | |
780 | // This function returns the global track position extrapolated to | |
781 | // the radial position "x" (cm) in the magnetic field "b" (kG) | |
782 | //--------------------------------------------------------------------- | |
783 | ||
784 | //conversion of track parameter representation is | |
785 | //based on the implementation of AliExternalTrackParam::Set(...) | |
786 | //maybe some of this code can be moved to AliVTrack to avoid code duplication | |
787 | const double kSafe = 1e-5; | |
788 | Double_t alpha=0.0; | |
789 | Double_t radPos2 = fPosition[0]*fPosition[0]+fPosition[1]*fPosition[1]; | |
790 | Double_t radMax = 45.; // approximately ITS outer radius | |
791 | if (radPos2 < radMax*radMax) { // inside the ITS | |
792 | alpha = TMath::ATan2(fMomentum[1],fMomentum[0]); | |
793 | } else { // outside the ITS | |
794 | Float_t phiPos = TMath::Pi()+TMath::ATan2(-fPosition[1], -fPosition[0]); | |
795 | alpha = | |
796 | TMath::DegToRad()*(20*((((Int_t)(phiPos*TMath::RadToDeg()))/20))+10); | |
797 | } | |
798 | // | |
799 | Double_t cs=TMath::Cos(alpha), sn=TMath::Sin(alpha); | |
800 | // protection: avoid alpha being too close to 0 or +-pi/2 | |
801 | if (TMath::Abs(sn)<kSafe) { | |
802 | alpha = kSafe; | |
803 | cs=TMath::Cos(alpha); | |
804 | sn=TMath::Sin(alpha); | |
805 | } | |
806 | else if (cs<kSafe) { | |
807 | alpha -= TMath::Sign(kSafe, alpha); | |
808 | cs=TMath::Cos(alpha); | |
809 | sn=TMath::Sin(alpha); | |
810 | } | |
811 | ||
812 | // Get the vertex of origin and the momentum | |
813 | TVector3 ver(fPosition[0],fPosition[1],fPosition[2]); | |
814 | TVector3 mom(fMomentum[0],fMomentum[1],fMomentum[2]); | |
815 | // | |
816 | // avoid momenta along axis | |
817 | if (TMath::Abs(mom[0])<kSafe) mom[0] = TMath::Sign(kSafe*TMath::Abs(mom[1]), mom[0]); | |
818 | if (TMath::Abs(mom[1])<kSafe) mom[1] = TMath::Sign(kSafe*TMath::Abs(mom[0]), mom[1]); | |
819 | ||
820 | // Rotate to the local coordinate system | |
821 | ver.RotateZ(-alpha); | |
822 | mom.RotateZ(-alpha); | |
823 | ||
824 | Double_t param0 = ver.Y(); | |
825 | Double_t param1 = ver.Z(); | |
826 | Double_t param2 = TMath::Sin(mom.Phi()); | |
827 | Double_t param3 = mom.Pz()/mom.Pt(); | |
828 | Double_t param4 = TMath::Sign(1/mom.Pt(),(Double_t)fCharge); | |
829 | ||
830 | //calculate the propagated coordinates | |
831 | //this is based on AliExternalTrackParam::GetXYZAt(Double_t x, Double_t b, Double_t *r) | |
832 | Double_t dx=x-ver.X(); | |
833 | if(TMath::Abs(dx)<=kAlmost0) return GetXYZ(r); | |
834 | ||
835 | Double_t f1=param2; | |
836 | Double_t f2=f1 + dx*param4*b*kB2C; | |
837 | ||
838 | if (TMath::Abs(f1) >= kAlmost1) return kFALSE; | |
839 | if (TMath::Abs(f2) >= kAlmost1) return kFALSE; | |
840 | ||
841 | Double_t r1=TMath::Sqrt((1.-f1)*(1.+f1)), r2=TMath::Sqrt((1.-f2)*(1.+f2)); | |
842 | r[0] = x; | |
843 | r[1] = param0 + dx*(f1+f2)/(r1+r2); | |
844 | r[2] = param1 + dx*(r2 + f2*(f1+f2)/(r1+r2))*param3;//Thanks to Andrea & Peter | |
845 | ||
846 | return Local2GlobalPosition(r,alpha); | |
847 | } | |
848 | ||
849 | ||
850 |