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820b4d9e | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, 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 | //==================================================================================================================================================== | |
17 | // | |
18 | // Description of an ALICE muon forward track, combining the information of the Muon Spectrometer and the Muon Forward Tracker | |
19 | // | |
20 | // Contact author: antonio.uras@cern.ch | |
21 | // | |
22 | //==================================================================================================================================================== | |
23 | ||
24 | #include "AliLog.h" | |
25 | #include "AliMUONTrack.h" | |
26 | #include "AliMFTCluster.h" | |
27 | #include "AliMUONVCluster.h" | |
28 | #include "AliMUONTrackParam.h" | |
29 | #include "AliMUONTrackExtrap.h" | |
30 | #include "TClonesArray.h" | |
31 | #include "TMatrixD.h" | |
32 | #include "TParticle.h" | |
33 | #include "AliMuonForwardTrack.h" | |
d4643a10 | 34 | #include "AliMFTConstants.h" |
ec7c7172 | 35 | #include "TLorentzVector.h" |
36 | #include "TDatabasePDG.h" | |
820b4d9e | 37 | |
38 | ClassImp(AliMuonForwardTrack) | |
39 | ||
40 | //==================================================================================================================================================== | |
41 | ||
42 | AliMuonForwardTrack::AliMuonForwardTrack(): | |
43 | AliMUONTrack(), | |
44 | fMUONTrack(0), | |
45 | fMCTrackRef(0), | |
d4643a10 | 46 | fMFTClusters(0), |
7e3dd1af | 47 | fNWrongClustersMC(-1), |
ec7c7172 | 48 | fTrackMCId(-1), |
49 | fKinem(0,0,0,0), | |
50 | fParamCovMatrix(5,5) | |
820b4d9e | 51 | { |
52 | ||
53 | // default constructor | |
d4643a10 | 54 | |
55 | for (Int_t iPlane=0; iPlane<AliMFTConstants::fNMaxPlanes; iPlane++) fPlaneExists[iPlane] = kFALSE; | |
56 | for (Int_t iParent=0; iParent<fgkNParentsMax; iParent++) { | |
57 | fParentMCLabel[iParent] = -1; | |
58 | fParentPDGCode[iParent] = 0; | |
59 | } | |
820b4d9e | 60 | fMFTClusters = new TClonesArray("AliMFTCluster"); |
274c2dce | 61 | fMFTClusters -> SetOwner(kTRUE); |
820b4d9e | 62 | |
63 | } | |
64 | ||
65 | //==================================================================================================================================================== | |
66 | ||
67 | AliMuonForwardTrack::AliMuonForwardTrack(AliMUONTrack *MUONTrack): | |
68 | AliMUONTrack(), | |
69 | fMUONTrack(0), | |
70 | fMCTrackRef(0), | |
d4643a10 | 71 | fMFTClusters(0), |
7e3dd1af | 72 | fNWrongClustersMC(-1), |
ec7c7172 | 73 | fTrackMCId(-1), |
74 | fKinem(0,0,0,0), | |
75 | fParamCovMatrix(5,5) | |
820b4d9e | 76 | { |
77 | ||
78 | SetMUONTrack(MUONTrack); | |
d4643a10 | 79 | for (Int_t iPlane=0; iPlane<AliMFTConstants::fNMaxPlanes; iPlane++) fPlaneExists[iPlane] = kFALSE; |
80 | for (Int_t iParent=0; iParent<fgkNParentsMax; iParent++) { | |
81 | fParentMCLabel[iParent] = -1; | |
82 | fParentPDGCode[iParent] = 0; | |
83 | } | |
820b4d9e | 84 | fMFTClusters = new TClonesArray("AliMFTCluster"); |
274c2dce | 85 | fMFTClusters -> SetOwner(kTRUE); |
820b4d9e | 86 | |
87 | } | |
88 | ||
89 | //==================================================================================================================================================== | |
90 | ||
91 | AliMuonForwardTrack::AliMuonForwardTrack(const AliMuonForwardTrack& track): | |
92 | AliMUONTrack(track), | |
d4643a10 | 93 | fMUONTrack(0x0), |
94 | fMCTrackRef(0x0), | |
95 | fMFTClusters(0x0), | |
7e3dd1af | 96 | fNWrongClustersMC(track.fNWrongClustersMC), |
ec7c7172 | 97 | fTrackMCId(track.fTrackMCId), |
98 | fKinem(track.fKinem), | |
99 | fParamCovMatrix(track.fParamCovMatrix) | |
820b4d9e | 100 | { |
101 | ||
102 | // copy constructor | |
d4643a10 | 103 | fMUONTrack = new AliMUONTrack(*(track.fMUONTrack)); |
104 | if (track.fMCTrackRef) fMCTrackRef = new TParticle(*(track.fMCTrackRef)); | |
105 | fMFTClusters = new TClonesArray(*(track.fMFTClusters)); | |
274c2dce | 106 | fMFTClusters->SetOwner(kTRUE); |
d4643a10 | 107 | for (Int_t iPlane=0; iPlane<AliMFTConstants::fNMaxPlanes; iPlane++) fPlaneExists[iPlane] = (track.fPlaneExists)[iPlane]; |
108 | for (Int_t iParent=0; iParent<fgkNParentsMax; iParent++) { | |
109 | fParentMCLabel[iParent] = (track.fParentMCLabel)[iParent]; | |
110 | fParentPDGCode[iParent] = (track.fParentPDGCode)[iParent]; | |
111 | } | |
820b4d9e | 112 | |
113 | } | |
114 | ||
115 | //==================================================================================================================================================== | |
116 | ||
117 | AliMuonForwardTrack& AliMuonForwardTrack::operator=(const AliMuonForwardTrack& track) { | |
118 | ||
119 | // Asignment operator | |
120 | ||
121 | // check assignement to self | |
122 | if (this == &track) return *this; | |
123 | ||
124 | // base class assignement | |
125 | AliMUONTrack::operator=(track); | |
126 | ||
127 | // clear memory | |
274c2dce | 128 | Clear(""); |
820b4d9e | 129 | |
d4643a10 | 130 | fMUONTrack = new AliMUONTrack(*(track.fMUONTrack)); |
131 | if (track.fMCTrackRef) fMCTrackRef = new TParticle(*(track.fMCTrackRef)); | |
132 | fMFTClusters = new TClonesArray(*(track.fMFTClusters)); | |
274c2dce | 133 | fMFTClusters->SetOwner(kTRUE); |
d4643a10 | 134 | fNWrongClustersMC = track.fNWrongClustersMC; |
7e3dd1af | 135 | fTrackMCId = track.fTrackMCId; |
ec7c7172 | 136 | fKinem = track.fKinem; |
137 | fParamCovMatrix = track.fParamCovMatrix; | |
d4643a10 | 138 | |
139 | for (Int_t iPlane=0; iPlane<AliMFTConstants::fNMaxPlanes; iPlane++) fPlaneExists[iPlane] = (track.fPlaneExists)[iPlane]; | |
140 | for (Int_t iParent=0; iParent<fgkNParentsMax; iParent++) { | |
141 | fParentMCLabel[iParent] = (track.fParentMCLabel)[iParent]; | |
142 | fParentPDGCode[iParent] = (track.fParentPDGCode)[iParent]; | |
143 | } | |
820b4d9e | 144 | |
145 | return *this; | |
146 | ||
147 | } | |
148 | ||
149 | //==================================================================================================================================================== | |
150 | ||
274c2dce | 151 | void AliMuonForwardTrack::Clear(const Option_t* /*opt*/) { |
152 | ||
153 | // Clear arrays | |
3b0abc02 | 154 | fMFTClusters -> Delete(); |
155 | delete fMFTClusters; fMFTClusters = 0x0; | |
274c2dce | 156 | delete fMUONTrack; fMUONTrack = 0x0; |
157 | delete fMCTrackRef; fMCTrackRef = 0x0; | |
274c2dce | 158 | |
159 | } | |
160 | ||
161 | //==================================================================================================================================================== | |
162 | ||
53b30119 | 163 | AliMuonForwardTrack::~AliMuonForwardTrack() { |
164 | ||
165 | delete fMUONTrack; | |
166 | delete fMCTrackRef; | |
b2741f03 | 167 | fMFTClusters -> Delete(); |
53b30119 | 168 | delete fMFTClusters; |
169 | ||
170 | } | |
171 | ||
172 | //==================================================================================================================================================== | |
173 | ||
820b4d9e | 174 | void AliMuonForwardTrack::SetMUONTrack(AliMUONTrack *MUONTrack) { |
175 | ||
176 | if (fMUONTrack) { | |
177 | AliInfo("fMUONTrack already exists, nothing will be done"); | |
178 | return; | |
179 | } | |
180 | ||
181 | fMUONTrack = MUONTrack; | |
d4643a10 | 182 | SetGlobalChi2(fMUONTrack->GetGlobalChi2()); |
820b4d9e | 183 | |
184 | } | |
185 | ||
186 | //==================================================================================================================================================== | |
187 | ||
188 | void AliMuonForwardTrack::SetMCTrackRef(TParticle *MCTrackRef) { | |
189 | ||
190 | if (fMCTrackRef) { | |
191 | AliInfo("fMCTrackRef already exists, nothing will be done"); | |
192 | return; | |
193 | } | |
194 | ||
195 | fMCTrackRef = MCTrackRef; | |
196 | ||
197 | } | |
198 | ||
199 | //==================================================================================================================================================== | |
200 | ||
201 | void AliMuonForwardTrack::AddTrackParamAtMFTCluster(AliMUONTrackParam &trackParam, AliMFTCluster &mftCluster) { | |
202 | ||
d4643a10 | 203 | AliDebug(1, Form("Before adding: this->fMFTClusters=%p has %d entries", this->fMFTClusters, this->fMFTClusters->GetEntries())); |
204 | Int_t iMFTCluster = this->fMFTClusters->GetEntries(); | |
820b4d9e | 205 | AliDebug(1, Form("mftCluster->GetX() = %f mftCluster->GetY() = %f mftCluster->GetErrX() = %f cmftCluster->GetErrY() = %f", |
206 | mftCluster.GetX(), mftCluster.GetY(), mftCluster.GetErrX(), mftCluster.GetErrY())); | |
207 | AliMUONVCluster *muonCluster = (AliMUONVCluster*) mftCluster.CreateMUONCluster(); | |
208 | AliDebug(1, Form("Created MUON cluster %p", muonCluster)); | |
209 | trackParam.SetUniqueID(iMFTCluster); // we profit of this slot to store the reference to the corresponding MFTCluster | |
210 | AliDebug(1, Form("Now adding muonCluster %p and trackParam %p",muonCluster, &trackParam)); | |
211 | AddTrackParamAtCluster(trackParam, *muonCluster, kTRUE); | |
820b4d9e | 212 | // we pass the parameters this->GetTrackParamAtCluster()->First() to the Kalman Filter algorithm: they will be updated!! |
213 | Double_t chi2Kalman = RunKalmanFilter(*(AliMUONTrackParam*)(GetTrackParamAtCluster()->First())); | |
d4643a10 | 214 | AliDebug(1, Form("Adding Kalman chi2 = %f to global chi2 = %f", chi2Kalman, GetGlobalChi2())); |
820b4d9e | 215 | Double_t newGlobalChi2 = GetGlobalChi2() + chi2Kalman; |
216 | mftCluster.SetLocalChi2(chi2Kalman); | |
217 | mftCluster.SetTrackChi2(newGlobalChi2); | |
d4643a10 | 218 | new ((*(this->fMFTClusters))[iMFTCluster]) AliMFTCluster(mftCluster); |
219 | AliDebug(1, Form("GetTrackParamAtCluster() = %p has %d entries while this->fMFTClusters=%p has %d entries", | |
220 | GetTrackParamAtCluster(), GetTrackParamAtCluster()->GetEntries(), this->fMFTClusters, this->fMFTClusters->GetEntries())); | |
820b4d9e | 221 | AliDebug(1, Form("muonCluster->GetZ() = %f, trackParam->GetZ() = %f",muonCluster->GetZ(), trackParam.GetZ())); |
222 | SetGlobalChi2(newGlobalChi2); | |
d4643a10 | 223 | AliDebug(1, Form("New global chi2 = %f", GetGlobalChi2())); |
820b4d9e | 224 | ((AliMUONTrackParam*) GetTrackParamAtCluster()->First())->SetTrackChi2(newGlobalChi2); |
225 | for (Int_t iPar=0; iPar<GetTrackParamAtCluster()->GetEntries(); iPar++) { | |
226 | AliDebug(1, Form("GetTrackParamAtCluster()->At(%d)->GetClusterPtr() = %p", | |
227 | iPar, ((AliMUONTrackParam*)(GetTrackParamAtCluster()->At(iPar)))->GetClusterPtr())); | |
228 | } | |
229 | ||
230 | } | |
231 | ||
232 | //==================================================================================================================================================== | |
233 | ||
234 | AliMUONTrackParam* AliMuonForwardTrack::GetTrackParamAtMUONCluster(Int_t iMUONCluster) { | |
235 | ||
236 | if (iMUONCluster<0 || iMUONCluster>=GetNMUONClusters()) { | |
237 | AliError("Invalid MUON cluster index. NULL pointer will be returned"); | |
238 | return NULL; | |
239 | } | |
240 | ||
241 | AliMUONTrackParam *trackParam = (AliMUONTrackParam*) fMUONTrack->GetTrackParamAtCluster()->At(iMUONCluster); | |
242 | ||
243 | return trackParam; | |
244 | ||
245 | } | |
246 | ||
247 | //==================================================================================================================================================== | |
248 | ||
249 | AliMUONTrackParam* AliMuonForwardTrack::GetTrackParamAtMFTCluster(Int_t iMFTCluster) { | |
250 | ||
251 | if (iMFTCluster<0 || iMFTCluster>=GetNMFTClusters()) { | |
252 | AliError("Invalid MFT cluster index. NULL pointer will be returned"); | |
253 | return NULL; | |
254 | } | |
255 | ||
256 | AliMUONTrackParam *trackParam = (AliMUONTrackParam*) GetTrackParamAtCluster()->At(iMFTCluster); | |
257 | ||
258 | return trackParam; | |
259 | ||
260 | } | |
261 | ||
262 | //==================================================================================================================================================== | |
263 | ||
264 | AliMUONVCluster* AliMuonForwardTrack::GetMUONCluster(Int_t iMUONCluster) { | |
265 | ||
266 | if (iMUONCluster<0 || iMUONCluster>=GetNMUONClusters()) { | |
267 | AliError("Invalid MUON cluster index. NULL pointer will be returned"); | |
268 | return NULL; | |
269 | } | |
270 | ||
271 | AliMUONTrackParam *trackParam = GetTrackParamAtMUONCluster(iMUONCluster); | |
272 | AliMUONVCluster *muonCluster = trackParam->GetClusterPtr(); | |
273 | ||
274 | return muonCluster; | |
275 | ||
276 | } | |
277 | ||
278 | //==================================================================================================================================================== | |
279 | ||
280 | AliMFTCluster* AliMuonForwardTrack::GetMFTCluster(Int_t iMFTCluster) { | |
281 | ||
282 | if (iMFTCluster<0 || iMFTCluster>=GetNMFTClusters()) { | |
d4643a10 | 283 | AliError(Form("Invalid MFT cluster index (%d). GetNMFTClusters()=%d. NULL pointer will be returned", iMFTCluster, GetNMFTClusters())); |
820b4d9e | 284 | return NULL; |
285 | } | |
286 | ||
287 | AliMUONTrackParam *trackParam = GetTrackParamAtMFTCluster(iMFTCluster); | |
d4643a10 | 288 | AliMFTCluster *mftCluster = (AliMFTCluster*) this->fMFTClusters->At(trackParam->GetUniqueID()); |
820b4d9e | 289 | |
290 | return mftCluster; | |
291 | ||
292 | } | |
293 | ||
294 | //==================================================================================================================================================== | |
295 | ||
296 | Double_t AliMuonForwardTrack::RunKalmanFilter(AliMUONTrackParam &trackParamAtCluster) { | |
297 | ||
298 | AliDebug(1, Form("Running Kalman filter for parameters %p (z = %f) and cluster %p (z = %f)", | |
299 | &trackParamAtCluster, trackParamAtCluster.GetZ(), trackParamAtCluster.GetClusterPtr(), trackParamAtCluster.GetClusterPtr()->GetZ())); | |
300 | ||
301 | // Compute new track parameters and their covariances including new cluster using kalman filter | |
302 | // return the *additional* track chi2 | |
303 | ||
304 | // Get actual track parameters (p) | |
305 | TMatrixD param(trackParamAtCluster.GetParameters()); | |
306 | ||
307 | // Get new cluster parameters (m) | |
308 | AliMUONVCluster *cluster = trackParamAtCluster.GetClusterPtr(); | |
309 | AliDebug(1, Form("cluster->GetX() = %f cluster->GetY() = %f cluster->GetErrX() = %f cluster->GetErrY() = %f", | |
310 | cluster->GetX(), cluster->GetY(), cluster->GetErrX(), cluster->GetErrY())); | |
311 | TMatrixD clusterParam(5,1); | |
312 | clusterParam.Zero(); | |
313 | clusterParam(0,0) = cluster->GetX(); | |
314 | clusterParam(2,0) = cluster->GetY(); | |
315 | ||
316 | // Compute the current parameter weight (W) | |
317 | TMatrixD paramWeight(trackParamAtCluster.GetCovariances()); | |
318 | if (paramWeight.Determinant() != 0) { | |
319 | paramWeight.Invert(); | |
320 | } else { | |
321 | Warning("RunKalmanFilter"," Determinant = 0"); | |
322 | return 1.e10; | |
323 | } | |
324 | ||
325 | // Compute the new cluster weight (U) | |
326 | TMatrixD clusterWeight(5,5); | |
327 | clusterWeight.Zero(); | |
328 | clusterWeight(0,0) = 1. / cluster->GetErrX2(); | |
329 | clusterWeight(2,2) = 1. / cluster->GetErrY2(); | |
330 | ||
331 | // Compute the new parameters covariance matrix ( (W+U)^-1 ) | |
332 | TMatrixD newParamCov(paramWeight,TMatrixD::kPlus,clusterWeight); | |
333 | if (newParamCov.Determinant() != 0) { | |
334 | newParamCov.Invert(); | |
335 | } | |
336 | else { | |
337 | Warning("RunKalmanFilter"," Determinant = 0"); | |
338 | return 1.e10; | |
339 | } | |
340 | ||
341 | // Save the new parameters covariance matrix | |
342 | trackParamAtCluster.SetCovariances(newParamCov); | |
343 | ||
344 | // Compute the new parameters (p' = ((W+U)^-1)U(m-p) + p) | |
345 | TMatrixD tmp(clusterParam,TMatrixD::kMinus,param); | |
346 | TMatrixD tmp2(clusterWeight,TMatrixD::kMult,tmp); // U(m-p) | |
347 | TMatrixD newParam(newParamCov,TMatrixD::kMult,tmp2); // ((W+U)^-1)U(m-p) | |
348 | newParam += param; // ((W+U)^-1)U(m-p) + p | |
349 | ||
350 | // Save the new parameters | |
351 | trackParamAtCluster.SetParameters(newParam); | |
352 | ||
353 | // Compute the additional chi2 (= ((p'-p)^-1)W(p'-p) + ((p'-m)^-1)U(p'-m)) | |
354 | tmp = newParam; // p' | |
355 | tmp -= param; // (p'-p) | |
356 | TMatrixD tmp3(paramWeight,TMatrixD::kMult,tmp); // W(p'-p) | |
357 | TMatrixD addChi2Track(tmp,TMatrixD::kTransposeMult,tmp3); // ((p'-p)^-1)W(p'-p) | |
358 | tmp = newParam; // p' | |
359 | tmp -= clusterParam; // (p'-m) | |
360 | TMatrixD tmp4(clusterWeight,TMatrixD::kMult,tmp); // U(p'-m) | |
361 | addChi2Track += TMatrixD(tmp,TMatrixD::kTransposeMult,tmp4); // ((p'-p)^-1)W(p'-p) + ((p'-m)^-1)U(p'-m) | |
362 | ||
363 | AliDebug(1,Form("Adding Kalman chi2 = %f",addChi2Track(0,0))); | |
364 | ||
365 | return addChi2Track(0,0); | |
366 | ||
367 | } | |
368 | ||
369 | //==================================================================================================================================================== | |
370 | ||
371 | Double_t AliMuonForwardTrack::GetWeightedOffset(Double_t x, Double_t y, Double_t z) { | |
372 | ||
373 | AliMUONTrackParam *param = GetTrackParamAtMFTCluster(0); | |
374 | AliMUONTrackExtrap::ExtrapToZCov(param, z); | |
375 | ||
376 | TMatrixD cov(5,5); | |
377 | cov = param->GetCovariances(); | |
378 | ||
379 | TMatrixD covCoordinates(2,2); | |
380 | covCoordinates(0,0) = cov(0,0); | |
381 | covCoordinates(0,1) = cov(0,2); | |
382 | covCoordinates(1,0) = cov(2,0); | |
383 | covCoordinates(1,1) = cov(2,2); | |
384 | ||
385 | TMatrixD covCoordinatesInverse = covCoordinates.Invert(); | |
386 | ||
387 | Double_t dX = param->GetNonBendingCoor() - x; | |
388 | Double_t dY = param->GetBendingCoor() - y; | |
389 | ||
390 | Double_t weightedOffset = TMath::Sqrt(0.5*(dX*dX*covCoordinatesInverse(0,0) + | |
391 | dY*dY*covCoordinatesInverse(1,1) + | |
392 | 2.*dX*dY*covCoordinatesInverse(0,1))); | |
393 | ||
394 | return weightedOffset; | |
395 | ||
396 | } | |
397 | ||
398 | //==================================================================================================================================================== | |
399 | ||
400 | Double_t AliMuonForwardTrack::GetOffsetX(Double_t x, Double_t z) { | |
401 | ||
402 | AliMUONTrackParam *param = GetTrackParamAtMFTCluster(0); | |
403 | AliMUONTrackExtrap::ExtrapToZCov(param, z); | |
404 | Double_t dX = param->GetNonBendingCoor() - x; | |
405 | return dX; | |
406 | ||
407 | } | |
408 | ||
409 | //==================================================================================================================================================== | |
410 | ||
411 | Double_t AliMuonForwardTrack::GetOffsetY(Double_t y, Double_t z) { | |
412 | ||
413 | AliMUONTrackParam *param = GetTrackParamAtMFTCluster(0); | |
414 | AliMUONTrackExtrap::ExtrapToZCov(param, z); | |
415 | Double_t dY = param->GetBendingCoor() - y; | |
416 | return dY; | |
417 | ||
418 | } | |
419 | ||
420 | //==================================================================================================================================================== | |
421 | ||
422 | Double_t AliMuonForwardTrack::GetOffset(Double_t x, Double_t y, Double_t z) { | |
423 | ||
424 | AliMUONTrackParam *param = GetTrackParamAtMFTCluster(0); | |
425 | AliMUONTrackExtrap::ExtrapToZCov(param, z); | |
426 | Double_t dX = param->GetNonBendingCoor() - x; | |
427 | Double_t dY = param->GetBendingCoor() - y; | |
428 | return TMath::Sqrt(dX*dX + dY*dY); | |
429 | ||
430 | } | |
431 | ||
432 | //==================================================================================================================================================== | |
433 | ||
3a775f35 | 434 | Bool_t AliMuonForwardTrack::IsFromResonance() { |
435 | ||
436 | Bool_t result = kFALSE; | |
437 | ||
438 | if ( GetParentPDGCode(0) == 113 || | |
439 | GetParentPDGCode(0) == 221 || | |
440 | GetParentPDGCode(0) == 223 || | |
441 | GetParentPDGCode(0) == 331 || | |
442 | GetParentPDGCode(0) == 333 || | |
443 | GetParentPDGCode(0) == 443 || | |
444 | GetParentPDGCode(0) == 100443 || | |
445 | GetParentPDGCode(0) == 553 || | |
446 | GetParentPDGCode(0) == 100553 ) result = kTRUE; | |
447 | ||
448 | if (result) AliDebug(1, Form("Muon comes from a resonance %d", GetParentPDGCode(0))); | |
449 | ||
450 | return result; | |
451 | ||
452 | } | |
453 | ||
454 | //==================================================================================================================================================== | |
455 | ||
456 | Bool_t AliMuonForwardTrack::IsFromCharm() { | |
457 | ||
458 | Bool_t result = kFALSE; | |
459 | ||
460 | if ( GetParentPDGCode(0) == 411 || | |
461 | GetParentPDGCode(0) == 421 || | |
462 | GetParentPDGCode(0) == 10411 || | |
463 | GetParentPDGCode(0) == 10421 || | |
464 | GetParentPDGCode(0) == 413 || | |
465 | GetParentPDGCode(0) == 423 || | |
466 | GetParentPDGCode(0) == 10413 || | |
467 | GetParentPDGCode(0) == 10423 || | |
468 | GetParentPDGCode(0) == 20413 || | |
469 | GetParentPDGCode(0) == 20423 || | |
470 | GetParentPDGCode(0) == 415 || | |
471 | GetParentPDGCode(0) == 425 || | |
472 | GetParentPDGCode(0) == 431 || | |
473 | GetParentPDGCode(0) == 10431 || | |
474 | GetParentPDGCode(0) == 433 || | |
475 | GetParentPDGCode(0) == 10433 || | |
476 | GetParentPDGCode(0) == 20433 || | |
477 | GetParentPDGCode(0) == 435 ) result = kTRUE; | |
478 | ||
479 | if (result) AliDebug(1, Form("Muon comes from a charmed hadron %d", GetParentPDGCode(0))); | |
480 | ||
481 | return result; | |
482 | ||
483 | } | |
484 | ||
485 | //==================================================================================================================================================== | |
486 | ||
487 | Bool_t AliMuonForwardTrack::IsFromBeauty() { | |
488 | ||
489 | Bool_t result = kFALSE; | |
490 | ||
491 | if ( GetParentPDGCode(0) == 511 || | |
492 | GetParentPDGCode(0) == 521 || | |
493 | GetParentPDGCode(0) == 10511 || | |
494 | GetParentPDGCode(0) == 10521 || | |
495 | GetParentPDGCode(0) == 513 || | |
496 | GetParentPDGCode(0) == 523 || | |
497 | GetParentPDGCode(0) == 10513 || | |
498 | GetParentPDGCode(0) == 10523 || | |
499 | GetParentPDGCode(0) == 20513 || | |
500 | GetParentPDGCode(0) == 20523 || | |
501 | GetParentPDGCode(0) == 515 || | |
502 | GetParentPDGCode(0) == 525 || | |
503 | GetParentPDGCode(0) == 531 || | |
504 | GetParentPDGCode(0) == 10531 || | |
505 | GetParentPDGCode(0) == 533 || | |
506 | GetParentPDGCode(0) == 10533 || | |
507 | GetParentPDGCode(0) == 20533 || | |
508 | GetParentPDGCode(0) == 535 || | |
509 | GetParentPDGCode(0) == 541 || | |
510 | GetParentPDGCode(0) == 10541 || | |
511 | GetParentPDGCode(0) == 543 || | |
512 | GetParentPDGCode(0) == 10543 || | |
513 | GetParentPDGCode(0) == 20543 || | |
514 | GetParentPDGCode(0) == 545 ) result = kTRUE; | |
515 | ||
516 | if (result) AliDebug(1, Form("Muon comes from a beauty hadron %d", GetParentPDGCode(0))); | |
517 | ||
518 | return result; | |
519 | ||
520 | } | |
521 | ||
522 | //==================================================================================================================================================== | |
523 | ||
524 | Bool_t AliMuonForwardTrack::IsFromBackground() { | |
525 | ||
526 | Bool_t result = kFALSE; | |
527 | ||
528 | if (!IsFromResonance() && !IsFromCharm() && !IsFromBeauty()) result = kTRUE; | |
529 | ||
530 | if (result) AliDebug(1, Form("Muon comes from a background source %d", GetParentPDGCode(0))); | |
531 | ||
532 | return result; | |
533 | ||
534 | } | |
535 | ||
536 | //==================================================================================================================================================== | |
ec7c7172 | 537 | |
538 | void AliMuonForwardTrack::EvalKinem(Double_t z) { | |
539 | ||
540 | AliMUONTrackParam *param = GetTrackParamAtMFTCluster(0); | |
541 | AliMUONTrackExtrap::ExtrapToZCov(param, z); | |
542 | ||
543 | Double_t mMu = TDatabasePDG::Instance()->GetParticle("mu-")->Mass(); | |
544 | Double_t energy = TMath::Sqrt(param->P()*param->P() + mMu*mMu); | |
545 | fKinem.SetPxPyPzE(param->Px(), param->Py(), param->Pz(), energy); | |
546 | ||
547 | TMatrixD cov(5,5); | |
548 | fParamCovMatrix = param->GetCovariances(); | |
549 | ||
550 | } | |
551 | ||
552 | //==================================================================================================================================================== | |
553 |