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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 | ||
8ac4fa64 | 24 | #include "AliLog.h" |
6dc40b1c | 25 | #include "AliExternalTrackParam.h" |
26 | #include "AliVVertex.h" | |
df9db588 | 27 | #include "AliAODTrack.h" |
28 | ||
29 | ClassImp(AliAODTrack) | |
30 | ||
31 | //______________________________________________________________________________ | |
32 | AliAODTrack::AliAODTrack() : | |
4f6e22bd | 33 | AliVTrack(), |
f43586f0 | 34 | fRAtAbsorberEnd(0.), |
1912763f | 35 | fChi2perNDF(-999.), |
9333290e | 36 | fChi2MatchTrigger(0.), |
6efb741f | 37 | fFlags(0), |
df9db588 | 38 | fLabel(-999), |
1912763f | 39 | fITSMuonClusterMap(0), |
9333290e | 40 | fFilterMap(0), |
d999f2e6 | 41 | fTPCClusterMap(), |
42 | fTPCSharedMap(), | |
02153d58 | 43 | fID(-999), |
9333290e | 44 | fCharge(-99), |
e1c744ca | 45 | fType(kUndef), |
9333290e | 46 | fCovMatrix(NULL), |
7be1db84 | 47 | fDetPid(NULL), |
48 | fProdVertex(NULL) | |
df9db588 | 49 | { |
50 | // default constructor | |
51 | ||
52 | SetP(); | |
53 | SetPosition((Float_t*)NULL); | |
6c954176 | 54 | SetXYAtDCA(-999., -999.); |
55 | SetPxPyPzAtDCA(-999., -999., -999.); | |
df9db588 | 56 | SetPID((Float_t*)NULL); |
57 | } | |
58 | ||
59 | //______________________________________________________________________________ | |
02153d58 | 60 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 61 | Int_t label, |
62 | Double_t p[3], | |
63 | Bool_t cartesian, | |
64 | Double_t x[3], | |
65 | Bool_t isDCA, | |
66 | Double_t covMatrix[21], | |
67 | Short_t charge, | |
68 | UChar_t itsClusMap, | |
69 | Double_t pid[10], | |
70 | AliAODVertex *prodVertex, | |
1912763f | 71 | Bool_t usedForVtxFit, |
dc825b15 | 72 | Bool_t usedForPrimVtxFit, |
ec40c484 | 73 | AODTrk_t ttype, |
862ce351 | 74 | UInt_t selectInfo, |
75 | Float_t chi2perNDF) : | |
4f6e22bd | 76 | AliVTrack(), |
f43586f0 | 77 | fRAtAbsorberEnd(0.), |
862ce351 | 78 | fChi2perNDF(chi2perNDF), |
9333290e | 79 | fChi2MatchTrigger(0.), |
6efb741f | 80 | fFlags(0), |
df9db588 | 81 | fLabel(label), |
6c954176 | 82 | fITSMuonClusterMap(0), |
9333290e | 83 | fFilterMap(selectInfo), |
d999f2e6 | 84 | fTPCClusterMap(), |
85 | fTPCSharedMap(), | |
02153d58 | 86 | fID(id), |
9333290e | 87 | fCharge(charge), |
e1c744ca | 88 | fType(ttype), |
9333290e | 89 | fCovMatrix(NULL), |
7be1db84 | 90 | fDetPid(NULL), |
9333290e | 91 | fProdVertex(prodVertex) |
df9db588 | 92 | { |
93 | // constructor | |
94 | ||
95 | SetP(p, cartesian); | |
96 | SetPosition(x, isDCA); | |
6c954176 | 97 | SetXYAtDCA(-999., -999.); |
98 | SetPxPyPzAtDCA(-999., -999., -999.); | |
1912763f | 99 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 100 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 101 | if(covMatrix) SetCovMatrix(covMatrix); |
102 | SetPID(pid); | |
6c954176 | 103 | SetITSClusterMap(itsClusMap); |
df9db588 | 104 | } |
105 | ||
106 | //______________________________________________________________________________ | |
02153d58 | 107 | AliAODTrack::AliAODTrack(Short_t id, |
df9db588 | 108 | Int_t label, |
109 | Float_t p[3], | |
110 | Bool_t cartesian, | |
111 | Float_t x[3], | |
112 | Bool_t isDCA, | |
113 | Float_t covMatrix[21], | |
114 | Short_t charge, | |
115 | UChar_t itsClusMap, | |
116 | Float_t pid[10], | |
117 | AliAODVertex *prodVertex, | |
1912763f | 118 | Bool_t usedForVtxFit, |
dc825b15 | 119 | Bool_t usedForPrimVtxFit, |
ec40c484 | 120 | AODTrk_t ttype, |
862ce351 | 121 | UInt_t selectInfo, |
122 | Float_t chi2perNDF) : | |
4f6e22bd | 123 | AliVTrack(), |
f43586f0 | 124 | fRAtAbsorberEnd(0.), |
862ce351 | 125 | fChi2perNDF(chi2perNDF), |
9333290e | 126 | fChi2MatchTrigger(0.), |
6efb741f | 127 | fFlags(0), |
df9db588 | 128 | fLabel(label), |
6c954176 | 129 | fITSMuonClusterMap(0), |
9333290e | 130 | fFilterMap(selectInfo), |
d999f2e6 | 131 | fTPCClusterMap(), |
132 | fTPCSharedMap(), | |
02153d58 | 133 | fID(id), |
9333290e | 134 | fCharge(charge), |
e1c744ca | 135 | fType(ttype), |
9333290e | 136 | fCovMatrix(NULL), |
7be1db84 | 137 | fDetPid(NULL), |
9333290e | 138 | fProdVertex(prodVertex) |
df9db588 | 139 | { |
140 | // constructor | |
141 | ||
142 | SetP(p, cartesian); | |
143 | SetPosition(x, isDCA); | |
6c954176 | 144 | SetXYAtDCA(-999., -999.); |
145 | SetPxPyPzAtDCA(-999., -999., -999.); | |
1912763f | 146 | SetUsedForVtxFit(usedForVtxFit); |
dc825b15 | 147 | SetUsedForPrimVtxFit(usedForPrimVtxFit); |
df9db588 | 148 | if(covMatrix) SetCovMatrix(covMatrix); |
149 | SetPID(pid); | |
6c954176 | 150 | SetITSClusterMap(itsClusMap); |
df9db588 | 151 | } |
152 | ||
df9db588 | 153 | //______________________________________________________________________________ |
154 | AliAODTrack::~AliAODTrack() | |
155 | { | |
156 | // destructor | |
157 | delete fCovMatrix; | |
7450f8ab | 158 | delete fDetPid; |
df9db588 | 159 | } |
160 | ||
161 | ||
162 | //______________________________________________________________________________ | |
163 | AliAODTrack::AliAODTrack(const AliAODTrack& trk) : | |
4f6e22bd | 164 | AliVTrack(trk), |
f43586f0 | 165 | fRAtAbsorberEnd(trk.fRAtAbsorberEnd), |
1912763f | 166 | fChi2perNDF(trk.fChi2perNDF), |
9333290e | 167 | fChi2MatchTrigger(trk.fChi2MatchTrigger), |
6efb741f | 168 | fFlags(trk.fFlags), |
df9db588 | 169 | fLabel(trk.fLabel), |
1912763f | 170 | fITSMuonClusterMap(trk.fITSMuonClusterMap), |
9333290e | 171 | fFilterMap(trk.fFilterMap), |
d999f2e6 | 172 | fTPCClusterMap(trk.fTPCClusterMap), |
173 | fTPCSharedMap(trk.fTPCSharedMap), | |
02153d58 | 174 | fID(trk.fID), |
9333290e | 175 | fCharge(trk.fCharge), |
e1c744ca | 176 | fType(trk.fType), |
9333290e | 177 | fCovMatrix(NULL), |
7be1db84 | 178 | fDetPid(NULL), |
9333290e | 179 | fProdVertex(trk.fProdVertex) |
df9db588 | 180 | { |
181 | // Copy constructor | |
182 | ||
183 | trk.GetP(fMomentum); | |
184 | trk.GetPosition(fPosition); | |
6c954176 | 185 | SetXYAtDCA(trk.XAtDCA(), trk.YAtDCA()); |
186 | SetPxPyPzAtDCA(trk.PxAtDCA(), trk.PyAtDCA(), trk.PzAtDCA()); | |
1912763f | 187 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 188 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
5d62ce04 | 189 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
7be1db84 | 190 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); |
df9db588 | 191 | SetPID(trk.fPID); |
df9db588 | 192 | } |
193 | ||
194 | //______________________________________________________________________________ | |
195 | AliAODTrack& AliAODTrack::operator=(const AliAODTrack& trk) | |
196 | { | |
197 | // Assignment operator | |
198 | if(this!=&trk) { | |
199 | ||
4f6e22bd | 200 | AliVTrack::operator=(trk); |
df9db588 | 201 | |
202 | trk.GetP(fMomentum); | |
203 | trk.GetPosition(fPosition); | |
204 | trk.GetPID(fPID); | |
205 | ||
6c954176 | 206 | SetXYAtDCA(trk.XAtDCA(), trk.YAtDCA()); |
207 | SetPxPyPzAtDCA(trk.PxAtDCA(), trk.PyAtDCA(), trk.PzAtDCA()); | |
208 | ||
f43586f0 | 209 | fRAtAbsorberEnd = trk.fRAtAbsorberEnd; |
210 | ||
1912763f | 211 | fChi2perNDF = trk.fChi2perNDF; |
9333290e | 212 | fChi2MatchTrigger = trk.fChi2MatchTrigger; |
df9db588 | 213 | |
6efb741f | 214 | fFlags = trk.fFlags; |
df9db588 | 215 | fLabel = trk.fLabel; |
216 | ||
9333290e | 217 | fITSMuonClusterMap = trk.fITSMuonClusterMap; |
218 | fFilterMap = trk.fFilterMap; | |
219 | ||
6efb741f | 220 | fID = trk.fID; |
221 | ||
9333290e | 222 | fCharge = trk.fCharge; |
223 | fType = trk.fType; | |
224 | ||
df9db588 | 225 | delete fCovMatrix; |
5d62ce04 | 226 | if(trk.fCovMatrix) fCovMatrix=new AliAODRedCov<6>(*trk.fCovMatrix); |
df9db588 | 227 | else fCovMatrix=NULL; |
228 | fProdVertex = trk.fProdVertex; | |
229 | ||
1912763f | 230 | SetUsedForVtxFit(trk.GetUsedForVtxFit()); |
dc825b15 | 231 | SetUsedForPrimVtxFit(trk.GetUsedForPrimVtxFit()); |
7be1db84 | 232 | |
233 | delete fDetPid; | |
234 | if(trk.fDetPid) fDetPid=new AliAODPid(*trk.fDetPid); | |
235 | else fDetPid=NULL; | |
df9db588 | 236 | } |
237 | ||
238 | return *this; | |
239 | } | |
240 | ||
4697e4fb | 241 | //______________________________________________________________________________ |
242 | Double_t AliAODTrack::M(AODTrkPID_t pid) const | |
243 | { | |
244 | // Returns the mass. | |
9861edc0 | 245 | // Masses for nuclei don't exist in the PDG tables, therefore they were put by hand. |
4697e4fb | 246 | |
247 | switch (pid) { | |
248 | ||
249 | case kElectron : | |
9861edc0 | 250 | return 0.000510999; //TDatabasePDG::Instance()->GetParticle(11/*::kElectron*/)->Mass(); |
4697e4fb | 251 | break; |
252 | ||
253 | case kMuon : | |
9861edc0 | 254 | return 0.1056584; //TDatabasePDG::Instance()->GetParticle(13/*::kMuonMinus*/)->Mass(); |
4697e4fb | 255 | break; |
256 | ||
257 | case kPion : | |
9861edc0 | 258 | return 0.13957; //TDatabasePDG::Instance()->GetParticle(211/*::kPiPlus*/)->Mass(); |
4697e4fb | 259 | break; |
260 | ||
261 | case kKaon : | |
9861edc0 | 262 | return 0.4937; //TDatabasePDG::Instance()->GetParticle(321/*::kKPlus*/)->Mass(); |
4697e4fb | 263 | break; |
264 | ||
265 | case kProton : | |
9861edc0 | 266 | return 0.9382720; //TDatabasePDG::Instance()->GetParticle(2212/*::kProton*/)->Mass(); |
4697e4fb | 267 | break; |
268 | ||
269 | case kDeuteron : | |
9861edc0 | 270 | return 1.8756; //TDatabasePDG::Instance()->GetParticle(1000010020)->Mass(); |
4697e4fb | 271 | break; |
272 | ||
273 | case kTriton : | |
9861edc0 | 274 | return 2.8089; //TDatabasePDG::Instance()->GetParticle(1000010030)->Mass(); |
4697e4fb | 275 | break; |
276 | ||
277 | case kHelium3 : | |
9861edc0 | 278 | return 2.8084; //TDatabasePDG::Instance()->GetParticle(1000020030)->Mass(); |
4697e4fb | 279 | break; |
280 | ||
281 | case kAlpha : | |
9861edc0 | 282 | return 3.7274; //TDatabasePDG::Instance()->GetParticle(1000020040)->Mass(); |
4697e4fb | 283 | break; |
284 | ||
285 | case kUnknown : | |
286 | return -999.; | |
287 | break; | |
288 | ||
289 | default : | |
290 | return -999.; | |
291 | } | |
292 | } | |
293 | ||
294 | //______________________________________________________________________________ | |
295 | Double_t AliAODTrack::E(AODTrkPID_t pid) const | |
296 | { | |
297 | // Returns the energy of the particle of a given pid. | |
298 | ||
299 | if (pid != kUnknown) { // particle was identified | |
300 | Double_t m = M(pid); | |
301 | return TMath::Sqrt(P()*P() + m*m); | |
302 | } else { // pid unknown | |
303 | return -999.; | |
304 | } | |
305 | } | |
306 | ||
307 | //______________________________________________________________________________ | |
308 | Double_t AliAODTrack::Y(AODTrkPID_t pid) const | |
309 | { | |
9861edc0 | 310 | // Returns the rapidity of a particle of a given pid. |
4697e4fb | 311 | |
312 | if (pid != kUnknown) { // particle was identified | |
313 | Double_t e = E(pid); | |
314 | Double_t pz = Pz(); | |
315 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
316 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
317 | } else { // energy not known or equal to pz | |
318 | return -999.; | |
319 | } | |
320 | } else { // pid unknown | |
321 | return -999.; | |
322 | } | |
323 | } | |
324 | ||
325 | //______________________________________________________________________________ | |
326 | Double_t AliAODTrack::Y(Double_t m) const | |
327 | { | |
9861edc0 | 328 | // Returns the rapidity of a particle of a given mass. |
4697e4fb | 329 | |
330 | if (m >= 0.) { // mass makes sense | |
331 | Double_t e = E(m); | |
332 | Double_t pz = Pz(); | |
333 | if (e>=0 && e!=pz) { // energy was positive (e.g. not -999.) and not equal to pz | |
334 | return 0.5*TMath::Log((e+pz)/(e-pz)); | |
335 | } else { // energy not known or equal to pz | |
336 | return -999.; | |
337 | } | |
338 | } else { // pid unknown | |
339 | return -999.; | |
340 | } | |
341 | } | |
342 | ||
343 | //______________________________________________________________________________ | |
344 | AliAODTrack::AODTrkPID_t AliAODTrack::GetMostProbablePID() const | |
345 | { | |
346 | // Returns the most probable PID array element. | |
347 | ||
348 | Int_t nPID = 10; | |
349 | if (fPID) { | |
350 | AODTrkPID_t loc = kUnknown; | |
351 | Double_t max = 0.; | |
352 | Bool_t allTheSame = kTRUE; | |
353 | ||
354 | for (Int_t iPID = 0; iPID < nPID; iPID++) { | |
355 | if (fPID[iPID] >= max) { | |
356 | if (fPID[iPID] > max) { | |
357 | allTheSame = kFALSE; | |
358 | max = fPID[iPID]; | |
359 | loc = (AODTrkPID_t)iPID; | |
360 | } else { | |
361 | allTheSame = kTRUE; | |
362 | } | |
363 | } | |
364 | } | |
365 | ||
366 | return allTheSame ? kUnknown : loc; | |
367 | } else { | |
368 | return kUnknown; | |
369 | } | |
370 | } | |
371 | ||
372 | //______________________________________________________________________________ | |
373 | void AliAODTrack::ConvertAliPIDtoAODPID() | |
374 | { | |
375 | // Converts AliPID array. | |
376 | // The numbering scheme is the same for electrons, muons, pions, kaons, and protons. | |
377 | // Everything else has to be set to zero. | |
378 | ||
379 | fPID[kDeuteron] = 0.; | |
8a1418dc | 380 | fPID[kTriton] = 0.; |
381 | fPID[kHelium3] = 0.; | |
382 | fPID[kAlpha] = 0.; | |
383 | fPID[kUnknown] = 0.; | |
4697e4fb | 384 | |
385 | return; | |
386 | } | |
387 | ||
388 | ||
df9db588 | 389 | //______________________________________________________________________________ |
390 | template <class T> void AliAODTrack::SetP(const T *p, const Bool_t cartesian) | |
391 | { | |
8a1418dc | 392 | // Set the momentum |
df9db588 | 393 | |
394 | if (p) { | |
395 | if (cartesian) { | |
16b65f2a | 396 | Double_t pt2 = p[0]*p[0] + p[1]*p[1]; |
0c5f89fb | 397 | Double_t pp = TMath::Sqrt(pt2 + p[2]*p[2]); |
df9db588 | 398 | |
16b65f2a | 399 | fMomentum[0] = TMath::Sqrt(pt2); // pt |
b1a9edc8 | 400 | fMomentum[1] = (pt2 != 0.) ? TMath::Pi()+TMath::ATan2(-p[1], -p[0]) : -999; // phi |
0c5f89fb | 401 | fMomentum[2] = (pp != 0.) ? TMath::ACos(p[2] / pp) : -999.; // theta |
df9db588 | 402 | } else { |
16b65f2a | 403 | fMomentum[0] = p[0]; // pt |
df9db588 | 404 | fMomentum[1] = p[1]; // phi |
405 | fMomentum[2] = p[2]; // theta | |
406 | } | |
407 | } else { | |
408 | fMomentum[0] = -999.; | |
409 | fMomentum[1] = -999.; | |
410 | fMomentum[2] = -999.; | |
411 | } | |
412 | } | |
413 | ||
414 | //______________________________________________________________________________ | |
415 | template <class T> void AliAODTrack::SetPosition(const T *x, const Bool_t dca) | |
416 | { | |
417 | // set the position | |
418 | ||
419 | if (x) { | |
420 | if (!dca) { | |
421 | ResetBit(kIsDCA); | |
422 | ||
423 | fPosition[0] = x[0]; | |
424 | fPosition[1] = x[1]; | |
425 | fPosition[2] = x[2]; | |
426 | } else { | |
427 | SetBit(kIsDCA); | |
428 | // don't know any better yet | |
429 | fPosition[0] = -999.; | |
430 | fPosition[1] = -999.; | |
431 | fPosition[2] = -999.; | |
432 | } | |
433 | } else { | |
434 | ResetBit(kIsDCA); | |
435 | ||
436 | fPosition[0] = -999.; | |
437 | fPosition[1] = -999.; | |
438 | fPosition[2] = -999.; | |
439 | } | |
440 | } | |
441 | ||
442 | //______________________________________________________________________________ | |
443 | void AliAODTrack::SetDCA(Double_t d, Double_t z) | |
444 | { | |
445 | // set the dca | |
446 | fPosition[0] = d; | |
447 | fPosition[1] = z; | |
448 | fPosition[2] = 0.; | |
449 | SetBit(kIsDCA); | |
450 | } | |
451 | ||
452 | //______________________________________________________________________________ | |
453 | void AliAODTrack::Print(Option_t* /* option */) const | |
454 | { | |
455 | // prints information about AliAODTrack | |
456 | ||
457 | printf("Object name: %s Track type: %s\n", GetName(), GetTitle()); | |
458 | printf(" px = %f\n", Px()); | |
459 | printf(" py = %f\n", Py()); | |
460 | printf(" pz = %f\n", Pz()); | |
461 | printf(" pt = %f\n", Pt()); | |
462 | printf(" 1/pt = %f\n", OneOverPt()); | |
463 | printf(" theta = %f\n", Theta()); | |
464 | printf(" phi = %f\n", Phi()); | |
1912763f | 465 | printf(" chi2/NDF = %f\n", Chi2perNDF()); |
df9db588 | 466 | printf(" charge = %d\n", Charge()); |
df9db588 | 467 | } |
468 | ||
2200238e | 469 | //______________________________________________________________________________ |
470 | void AliAODTrack::SetMatchTrigger(Int_t matchTrig) | |
471 | { | |
472 | // Set the MUON trigger information | |
8ac4fa64 | 473 | switch(matchTrig){ |
e1c744ca | 474 | case 0: // 0 track does not match trigger |
475 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
476 | break; | |
477 | case 1: // 1 track match but does not pass pt cut | |
478 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x40000000; | |
479 | break; | |
480 | case 2: // 2 track match Low pt cut | |
481 | fITSMuonClusterMap=(fITSMuonClusterMap&0x3fffffff)|0x80000000; | |
482 | break; | |
483 | case 3: // 3 track match High pt cut | |
484 | fITSMuonClusterMap=fITSMuonClusterMap|0xc0000000; | |
485 | break; | |
486 | default: | |
487 | fITSMuonClusterMap=fITSMuonClusterMap&0x3fffffff; | |
8ac4fa64 | 488 | AliWarning(Form("unknown case for matchTrig: %d\n",matchTrig)); |
e1c744ca | 489 | } |
490 | } | |
491 | ||
2200238e | 492 | //______________________________________________________________________________ |
493 | Bool_t AliAODTrack::HitsMuonChamber(Int_t MuonChamber, Int_t cathode) const | |
494 | { | |
495 | // return kTRUE if the track fires the given tracking or trigger chamber. | |
496 | // If the chamber is a trigger one: | |
497 | // - if cathode = 0 or 1, the track matches the corresponding cathode | |
498 | // - if cathode = -1, the track matches both cathodes | |
499 | ||
500 | if (MuonChamber < 0) return kFALSE; | |
501 | ||
502 | if (MuonChamber < 10) return TESTBIT(GetMUONClusterMap(), MuonChamber); | |
503 | ||
504 | if (MuonChamber < 14) { | |
505 | ||
506 | if (cathode < 0) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber) && | |
507 | TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+4); | |
508 | ||
509 | if (cathode < 2) return TESTBIT(GetHitsPatternInTrigCh(), 13-MuonChamber+(1-cathode)*4); | |
510 | ||
e1c744ca | 511 | } |
2200238e | 512 | |
513 | return kFALSE; | |
e1c744ca | 514 | } |
515 | ||
2200238e | 516 | //______________________________________________________________________________ |
517 | Bool_t AliAODTrack::MatchTriggerDigits() const | |
518 | { | |
519 | // return kTRUE if the track matches a digit on both planes of at least 2 trigger chambers | |
6c954176 | 520 | |
2200238e | 521 | Int_t nMatchedChambers = 0; |
522 | for (Int_t ich=10; ich<14; ich++) if (HitsMuonChamber(ich)) nMatchedChambers++; | |
523 | ||
524 | return (nMatchedChambers >= 2); | |
e1c744ca | 525 | } |
c683ddc2 | 526 | |
6dc40b1c | 527 | //______________________________________________________________________________ |
528 | Bool_t AliAODTrack::PropagateToDCA(const AliVVertex *vtx, | |
529 | Double_t b, Double_t maxd, Double_t dz[2], Double_t covar[3]) | |
530 | { | |
531 | // compute impact parameters to the vertex vtx and their covariance matrix | |
532 | // b is the Bz, needed to propagate correctly the track to vertex | |
533 | // only the track parameters are update after the propagation (pos and mom), | |
534 | // not the covariance matrix. This is OK for propagation over short distance | |
535 | // inside the beam pipe. | |
536 | // return kFALSE is something went wrong | |
537 | ||
538 | // convert to AliExternalTrackParam | |
539 | AliExternalTrackParam etp(this); | |
540 | ||
541 | Float_t xstart = etp.GetX(); | |
542 | if(xstart>3.) { | |
543 | AliError("This method can be used only for propagation inside the beam pipe"); | |
544 | return kFALSE; | |
545 | } | |
546 | ||
547 | if(!etp.PropagateToDCA(vtx,b,maxd,dz,covar)) return kFALSE; | |
548 | ||
549 | // update track position and momentum | |
550 | Double_t mom[3]; | |
551 | etp.GetPxPyPz(mom); | |
552 | SetP(mom,kTRUE); | |
553 | etp.GetXYZ(mom); | |
554 | SetPosition(mom,kFALSE); | |
555 | ||
556 | ||
557 | return kTRUE; | |
558 | } | |
559 | ||
c8fe2783 | 560 | //______________________________________________________________________________ |
561 | Bool_t AliAODTrack::GetPxPyPz(Double_t p[3]) const | |
562 | { | |
563 | //--------------------------------------------------------------------- | |
564 | // This function returns the global track momentum components | |
565 | //--------------------------------------------------------------------- | |
566 | p[0]=Px(); p[1]=Py(); p[2]=Pz(); | |
567 | return kTRUE; | |
568 | } |