1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 // Implementation of the ESD track class
17 // ESD = Event Summary Data
18 // This is the class to deal with during the phisics analysis of data
19 // Origin: Iouri Belikov, CERN
20 // e-mail: Jouri.Belikov@cern.ch
24 // What do you need to know before starting analysis
25 // (by Marian Ivanov: marian.ivanov@cern.ch)
29 // 1. What is the AliESDtrack
30 // 2. What informations do we store
31 // 3. How to use the information for analysis
34 // 1.AliESDtrack is the container of the information about the track/particle
35 // reconstructed during Barrel Tracking.
36 // The track information is propagated from one tracking detector to
37 // other using the functionality of AliESDtrack - Current parameters.
39 // No global fit model is used.
40 // Barrel tracking use Kalman filtering technique, it gives optimal local
41 // track parameters at given point under certian assumptions.
43 // Kalman filter take into account additional effect which are
44 // difficult to handle using global fit.
46 // a.) Multiple scattering
48 // c.) Non homogenous magnetic field
50 // In general case, following barrel detectors are contributing to
51 // the Kalman track information:
56 // In general 3 reconstruction itteration are performed:
57 // 1. Find tracks - sequence TPC->ITS
58 // 2. PropagateBack - sequence ITS->TPC->TRD -> Outer PID detectors
59 // 3. Refit invward - sequence TRD->TPC->ITS
60 // The current tracks are updated after each detector (see bellow).
61 // In specical cases a track sanpshots are stored.
64 // For some type of analysis (+visualization) track local parameters at
65 // different position are neccesary. A snapshots during the track
66 // propagation are created.
67 // (See AliExternalTrackParam class for desctiption of variables and
70 // a. Current parameters - class itself (AliExternalTrackParam)
71 // Contributors: general case TRD->TPC->ITS
72 // Preferable usage: Decission - primary or secondary track
73 // NOTICE - By default the track parameters are stored at the DCA point
74 // to the primary vertex. optimal for primary tracks,
75 // far from optimal for secondary tracks.
76 // b. Constrained parameters - Kalman information updated with
77 // the Primary vertex information
78 // Contributors: general case TRD->TPC->ITS
79 // Preferable usage: Use only for tracks selected as primary
80 // NOTICE - not real constrain - taken as additional measurement
81 // with corresponding error
83 // const AliExternalTrackParam *GetConstrainedParam() const {return fCp;}
84 // c. Inner parameters - Track parameters at inner wall of the TPC
85 // Contributors: general case TRD->TPC
87 // const AliExternalTrackParam *GetInnerParam() const { return fIp;}
89 // d. TPCinnerparam - contributors - TPC only
91 // Preferable usage: Requested for HBT study
92 // (smaller correlations as using also ITS information)
93 // NOTICE - the track parameters are propagated to the DCA to
95 // Optimal for primary, far from optimal for secondary tracks
97 // const AliExternalTrackParam *GetTPCInnerParam() const {return fTPCInner;}
99 // e. Outer parameters -
100 // Contributors- general case - ITS-> TPC -> TRD
101 // The last point - Outer parameters radius is determined
102 // e.a) Local inclination angle bigger than threshold -
103 // Low momenta tracks
104 // e.a) Catastrofic energy losss in material
105 // e.b) Not further improvement (no space points)
107 // a.) Tracking: Starting parameter for Refit inward
110 // NOTICE: Should be not used for the physic analysis
112 // const AliExternalTrackParam *GetOuterParam() const { return fOp;}
114 //-----------------------------------------------------------------
117 #include <TParticle.h>
119 #include "AliESDVertex.h"
120 #include "AliESDtrack.h"
121 #include "AliKalmanTrack.h"
122 #include "AliVTrack.h"
124 #include "AliTrackPointArray.h"
125 #include "TPolyMarker3D.h"
127 ClassImp(AliESDtrack)
129 void SetPIDValues(Double_t * dest, const Double_t * src, Int_t n) {
130 // This function copies "n" PID weights from "scr" to "dest"
131 // and normalizes their sum to 1 thus producing conditional probabilities.
132 // The negative weights are set to 0.
133 // In case all the weights are non-positive they are replaced by
134 // uniform probabilities
138 Float_t uniform = 1./(Float_t)n;
141 for (Int_t i=0; i<n; i++)
151 for (Int_t i=0; i<n; i++) dest[i] /= sum;
153 for (Int_t i=0; i<n; i++) dest[i] = uniform;
156 //_______________________________________________________________________
157 AliESDtrack::AliESDtrack() :
158 AliExternalTrackParam(),
163 fFriendTrack(new AliESDfriendTrack()),
164 fTPCClusterMap(159),//number of padrows
165 fTPCSharedMap(159),//number of padrows
176 fEMCALindex(kEMCALNoMatch),
182 fCddTPC(0),fCdzTPC(0),fCzzTPC(0),
185 fCdd(0),fCdz(0),fCzz(0),
219 // The default ESD constructor
222 for (i=0; i<AliPID::kSPECIES; i++) {
232 for (i=0; i<3; i++) { fKinkIndexes[i]=0;}
233 for (i=0; i<3; i++) { fV0Indexes[i]=0;}
234 for (i=0;i<kTRDnPlanes;i++) {
237 for (i=0;i<4;i++) {fTPCPoints[i]=0;}
238 for (i=0;i<3;i++) {fTOFLabel[i]=0;}
239 for (i=0;i<10;i++) {fTOFInfo[i]=0;}
240 for (i=0;i<12;i++) {fITSModule[i]=-1;}
243 //_______________________________________________________________________
244 AliESDtrack::AliESDtrack(const AliESDtrack& track):
245 AliExternalTrackParam(track),
251 fTPCClusterMap(track.fTPCClusterMap),
252 fTPCSharedMap(track.fTPCSharedMap),
253 fFlags(track.fFlags),
255 fLabel(track.fLabel),
256 fITSLabel(track.fITSLabel),
257 fTPCLabel(track.fTPCLabel),
258 fTRDLabel(track.fTRDLabel),
259 fTOFCalChannel(track.fTOFCalChannel),
260 fTOFindex(track.fTOFindex),
261 fHMPIDqn(track.fHMPIDqn),
262 fHMPIDcluIdx(track.fHMPIDcluIdx),
263 fEMCALindex(track.fEMCALindex),
264 fHMPIDtrkTheta(track.fHMPIDtrkTheta),
265 fHMPIDtrkPhi(track.fHMPIDtrkPhi),
266 fHMPIDsignal(track.fHMPIDsignal),
267 fTrackLength(track.fTrackLength),
268 fdTPC(track.fdTPC),fzTPC(track.fzTPC),
269 fCddTPC(track.fCddTPC),fCdzTPC(track.fCdzTPC),fCzzTPC(track.fCzzTPC),
270 fCchi2TPC(track.fCchi2TPC),
271 fD(track.fD),fZ(track.fZ),
272 fCdd(track.fCdd),fCdz(track.fCdz),fCzz(track.fCzz),
273 fCchi2(track.fCchi2),
274 fITSchi2(track.fITSchi2),
275 fTPCchi2(track.fTPCchi2),
276 fTRDchi2(track.fTRDchi2),
277 fTOFchi2(track.fTOFchi2),
278 fHMPIDchi2(track.fHMPIDchi2),
279 fITSsignal(track.fITSsignal),
280 fTPCsignal(track.fTPCsignal),
281 fTPCsignalS(track.fTPCsignalS),
282 fTRDsignal(track.fTRDsignal),
283 fTRDQuality(track.fTRDQuality),
284 fTRDBudget(track.fTRDBudget),
285 fTOFsignal(track.fTOFsignal),
286 fTOFsignalToT(track.fTOFsignalToT),
287 fTOFsignalRaw(track.fTOFsignalRaw),
288 fTOFsignalDz(track.fTOFsignalDz),
289 fHMPIDtrkX(track.fHMPIDtrkX),
290 fHMPIDtrkY(track.fHMPIDtrkY),
291 fHMPIDmipX(track.fHMPIDmipX),
292 fHMPIDmipY(track.fHMPIDmipY),
293 fTPCncls(track.fTPCncls),
294 fTPCnclsF(track.fTPCnclsF),
295 fTPCsignalN(track.fTPCsignalN),
296 fITSncls(track.fITSncls),
297 fITSClusterMap(track.fITSClusterMap),
298 fTRDncls(track.fTRDncls),
299 fTRDncls0(track.fTRDncls0),
300 fTRDpidQuality(track.fTRDpidQuality),
301 fTRDnSlices(track.fTRDnSlices),
307 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTrackTime[i]=track.fTrackTime[i];
308 for (Int_t i=0;i<AliPID::kSPECIES;i++) fR[i]=track.fR[i];
310 for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=track.fITSr[i];
312 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=track.fTPCr[i];
313 for (Int_t i=0;i<4;i++) {fTPCPoints[i]=track.fTPCPoints[i];}
314 for (Int_t i=0; i<3;i++) { fKinkIndexes[i]=track.fKinkIndexes[i];}
315 for (Int_t i=0; i<3;i++) { fV0Indexes[i]=track.fV0Indexes[i];}
317 for (Int_t i=0;i<kTRDnPlanes;i++) {
318 fTRDTimBin[i]=track.fTRDTimBin[i];
322 fTRDslices=new Double32_t[fTRDnSlices];
323 for (Int_t i=0; i<fTRDnSlices; i++) fTRDslices[i]=track.fTRDslices[i];
326 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTRDr[i]=track.fTRDr[i];
327 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTOFr[i]=track.fTOFr[i];
328 for (Int_t i=0;i<3;i++) fTOFLabel[i]=track.fTOFLabel[i];
329 for (Int_t i=0;i<10;i++) fTOFInfo[i]=track.fTOFInfo[i];
330 for (Int_t i=0;i<12;i++) fITSModule[i]=track.fITSModule[i];
331 for (Int_t i=0;i<AliPID::kSPECIES;i++) fHMPIDr[i]=track.fHMPIDr[i];
333 if (track.fCp) fCp=new AliExternalTrackParam(*track.fCp);
334 if (track.fIp) fIp=new AliExternalTrackParam(*track.fIp);
335 if (track.fTPCInner) fTPCInner=new AliExternalTrackParam(*track.fTPCInner);
336 if (track.fOp) fOp=new AliExternalTrackParam(*track.fOp);
338 if (track.fFriendTrack) fFriendTrack=new AliESDfriendTrack(*(track.fFriendTrack));
341 //_______________________________________________________________________
342 AliESDtrack::AliESDtrack(const AliVTrack *track) :
343 AliExternalTrackParam(track),
349 fTPCClusterMap(159),//number of padrows
350 fTPCSharedMap(159),//number of padrows
361 fEMCALindex(kEMCALNoMatch),
367 fCddTPC(0),fCdzTPC(0),fCzzTPC(0),
370 fCdd(0),fCdz(0),fCzz(0),
403 // ESD track from AliVTrack
406 // Reset all the arrays
408 for (i=0; i<AliPID::kSPECIES; i++) {
418 for (i=0; i<3; i++) { fKinkIndexes[i]=0;}
419 for (i=0; i<3; i++) { fV0Indexes[i]=-1;}
420 for (i=0;i<kTRDnPlanes;i++) {
423 for (i=0;i<4;i++) {fTPCPoints[i]=0;}
424 for (i=0;i<3;i++) {fTOFLabel[i]=0;}
425 for (i=0;i<10;i++) {fTOFInfo[i]=0;}
426 for (i=0;i<12;i++) {fITSModule[i]=-1;}
429 SetID(track->GetID());
431 // Set ITS cluster map
432 fITSClusterMap=track->GetITSClusterMap();
434 // Set the combined PID
435 const Double_t *pid = track->PID();
437 for (i=0; i<AliPID::kSPECIES; i++) fR[i]=pid[i];
439 // AliESD track label
440 SetLabel(track->GetLabel());
442 SetStatus(track->GetStatus());
445 //_______________________________________________________________________
446 AliESDtrack::AliESDtrack(TParticle * part) :
447 AliExternalTrackParam(),
453 fTPCClusterMap(159),//number of padrows
454 fTPCSharedMap(159),//number of padrows
465 fEMCALindex(kEMCALNoMatch),
471 fCddTPC(0),fCdzTPC(0),fCzzTPC(0),
474 fCdd(0),fCdz(0),fCzz(0),
507 // ESD track from TParticle
510 // Reset all the arrays
512 for (i=0; i<AliPID::kSPECIES; i++) {
522 for (i=0; i<3; i++) { fKinkIndexes[i]=0;}
523 for (i=0; i<3; i++) { fV0Indexes[i]=-1;}
524 for (i=0;i<kTRDnPlanes;i++) {
527 for (i=0;i<4;i++) {fTPCPoints[i]=0;}
528 for (i=0;i<3;i++) {fTOFLabel[i]=0;}
529 for (i=0;i<10;i++) {fTOFInfo[i]=0;}
530 for (i=0;i<12;i++) {fITSModule[i]=-1;}
532 // Calculate the AliExternalTrackParam content
539 // Calculate alpha: the rotation angle of the corresponding local system (TPC sector)
540 alpha = part->Phi()*180./TMath::Pi();
541 if (alpha<0) alpha+= 360.;
542 if (alpha>360) alpha -= 360.;
544 Int_t sector = (Int_t)(alpha/20.);
545 alpha = 10. + 20.*sector;
547 alpha *= TMath::Pi();
549 // Covariance matrix: no errors, the parameters are exact
550 for (i=0; i<15; i++) covar[i]=0.;
552 // Get the vertex of origin and the momentum
553 TVector3 ver(part->Vx(),part->Vy(),part->Vz());
554 TVector3 mom(part->Px(),part->Py(),part->Pz());
556 // Rotate to the local coordinate system (TPC sector)
560 // X of the referense plane
563 Int_t pdgCode = part->GetPdgCode();
566 TDatabasePDG::Instance()->GetParticle(pdgCode)->Charge();
570 param[2] = TMath::Sin(mom.Phi());
571 param[3] = mom.Pz()/mom.Pt();
572 param[4] = TMath::Sign(1/mom.Pt(),charge);
574 // Set AliExternalTrackParam
575 Set(xref, alpha, param, covar);
580 switch (TMath::Abs(pdgCode)) {
606 // If the particle is not e,mu,pi,K or p the PID probabilities are set to 0
607 if (indexPID < AliPID::kSPECIES) {
613 fHMPIDr[indexPID]=1.;
616 // AliESD track label
617 SetLabel(part->GetUniqueID());
621 //_______________________________________________________________________
622 AliESDtrack::~AliESDtrack(){
624 // This is destructor according Coding Conventrions
626 //printf("Delete track\n");
636 AliESDtrack &AliESDtrack::operator=(const AliESDtrack &source){
639 if(&source == this) return *this;
640 AliExternalTrackParam::operator=(source);
644 // we have the trackparam: assign or copy construct
645 if(fCp)*fCp = *source.fCp;
646 else fCp = new AliExternalTrackParam(*source.fCp);
649 // no track param delete the old one
655 // we have the trackparam: assign or copy construct
656 if(fIp)*fIp = *source.fIp;
657 else fIp = new AliExternalTrackParam(*source.fIp);
660 // no track param delete the old one
666 if(source.fTPCInner){
667 // we have the trackparam: assign or copy construct
668 if(fTPCInner) *fTPCInner = *source.fTPCInner;
669 else fTPCInner = new AliExternalTrackParam(*source.fTPCInner);
672 // no track param delete the old one
673 if(fTPCInner)delete fTPCInner;
679 // we have the trackparam: assign or copy construct
680 if(fOp) *fOp = *source.fOp;
681 else fOp = new AliExternalTrackParam(*source.fOp);
684 // no track param delete the old one
689 // copy also the friend track
690 // use copy constructor
691 if(source.fFriendTrack){
692 // we have the trackparam: assign or copy construct
693 delete fFriendTrack; fFriendTrack=new AliESDfriendTrack(*source.fFriendTrack);
696 // no track param delete the old one
697 delete fFriendTrack; fFriendTrack= 0;
700 fTPCClusterMap = source.fTPCClusterMap;
701 fTPCSharedMap = source.fTPCSharedMap;
703 fFlags = source.fFlags;
705 fLabel = source.fLabel;
706 fITSLabel = source.fITSLabel;
707 for(int i = 0; i< 12;++i){
708 fITSModule[i] = source.fITSModule[i];
710 fTPCLabel = source.fTPCLabel;
711 fTRDLabel = source.fTRDLabel;
712 for(int i = 0; i< 3;++i){
713 fTOFLabel[i] = source.fTOFLabel[i];
715 fTOFCalChannel = source.fTOFCalChannel;
716 fTOFindex = source.fTOFindex;
717 fHMPIDqn = source.fHMPIDqn;
718 fHMPIDcluIdx = source.fHMPIDcluIdx;
719 fEMCALindex = source.fEMCALindex;
721 for(int i = 0; i< 3;++i){
722 fKinkIndexes[i] = source.fKinkIndexes[i];
723 fV0Indexes[i] = source.fV0Indexes[i];
726 for(int i = 0; i< AliPID::kSPECIES;++i){
727 fR[i] = source.fR[i];
728 fITSr[i] = source.fITSr[i];
729 fTPCr[i] = source.fTPCr[i];
730 fTRDr[i] = source.fTRDr[i];
731 fTOFr[i] = source.fTOFr[i];
732 fHMPIDr[i] = source.fHMPIDr[i];
733 fTrackTime[i] = source.fTrackTime[i];
736 fHMPIDtrkTheta = source.fHMPIDtrkTheta;
737 fHMPIDtrkPhi = source.fHMPIDtrkPhi;
738 fHMPIDsignal = source.fHMPIDsignal;
741 fTrackLength = source. fTrackLength;
742 fdTPC = source.fdTPC;
743 fzTPC = source.fzTPC;
744 fCddTPC = source.fCddTPC;
745 fCdzTPC = source.fCdzTPC;
746 fCzzTPC = source.fCzzTPC;
747 fCchi2TPC = source.fCchi2TPC;
754 fCchi2 = source.fCchi2;
756 fITSchi2 = source.fITSchi2;
757 fTPCchi2 = source.fTPCchi2;
758 fTRDchi2 = source.fTRDchi2;
759 fTOFchi2 = source.fTOFchi2;
760 fHMPIDchi2 = source.fHMPIDchi2;
763 fITSsignal = source.fITSsignal;
764 fTPCsignal = source.fTPCsignal;
765 fTPCsignalS = source.fTPCsignalS;
766 for(int i = 0; i< 4;++i){
767 fTPCPoints[i] = source.fTPCPoints[i];
769 fTRDsignal = source.fTRDsignal;
771 for(int i = 0;i < kTRDnPlanes;++i){
772 fTRDTimBin[i] = source.fTRDTimBin[i];
778 fTRDnSlices=source.fTRDnSlices;
780 fTRDslices=new Double32_t[fTRDnSlices];
781 for(int j = 0;j < fTRDnSlices;++j) fTRDslices[j] = source.fTRDslices[j];
784 fTRDQuality = source.fTRDQuality;
785 fTRDBudget = source.fTRDBudget;
786 fTOFsignal = source.fTOFsignal;
787 fTOFsignalToT = source.fTOFsignalToT;
788 fTOFsignalRaw = source.fTOFsignalRaw;
789 fTOFsignalDz = source.fTOFsignalDz;
791 for(int i = 0;i<10;++i){
792 fTOFInfo[i] = source.fTOFInfo[i];
795 fHMPIDtrkX = source.fHMPIDtrkX;
796 fHMPIDtrkY = source.fHMPIDtrkY;
797 fHMPIDmipX = source.fHMPIDmipX;
798 fHMPIDmipY = source.fHMPIDmipY;
800 fTPCncls = source.fTPCncls;
801 fTPCnclsF = source.fTPCnclsF;
802 fTPCsignalN = source.fTPCsignalN;
804 fITSncls = source.fITSncls;
805 fITSClusterMap = source.fITSClusterMap;
806 fTRDncls = source.fTRDncls;
807 fTRDncls0 = source.fTRDncls0;
808 fTRDpidQuality = source.fTRDpidQuality;
814 void AliESDtrack::Copy(TObject &obj) const {
816 // this overwrites the virtual TOBject::Copy()
817 // to allow run time copying without casting
820 if(this==&obj)return;
821 AliESDtrack *robj = dynamic_cast<AliESDtrack*>(&obj);
822 if(!robj)return; // not an AliESDtrack
829 void AliESDtrack::AddCalibObject(TObject * object){
831 // add calib object to the list
833 if (!fFriendTrack) fFriendTrack = new AliESDfriendTrack;
834 fFriendTrack->AddCalibObject(object);
837 TObject * AliESDtrack::GetCalibObject(Int_t index){
839 // return calib objct at given position
841 if (!fFriendTrack) return 0;
842 return fFriendTrack->GetCalibObject(index);
846 Bool_t AliESDtrack::FillTPCOnlyTrack(AliESDtrack &track){
848 // Fills the information of the TPC-only first reconstruction pass
849 // into the passed ESDtrack object. For consistency fTPCInner is also filled
854 // For data produced before r26675
855 // RelateToVertexTPC was not properly called during reco
856 // so you'll have to call it again, before FillTPCOnlyTrack
857 // Float_t p[2],cov[3];
858 // track->GetImpactParametersTPC(p,cov);
859 // if(p[0]==0&&p[1]==0) // <- Default values
860 // track->RelateToVertexTPC(esd->GetPrimaryVertexTPC(),esd->GetMagneticField(),kVeryBig);
863 if(!fTPCInner)return kFALSE;
865 // fill the TPC track params to the global track parameters
866 track.Set(fTPCInner->GetX(),fTPCInner->GetAlpha(),fTPCInner->GetParameter(),fTPCInner->GetCovariance());
869 track.fCdd = fCddTPC;
870 track.fCdz = fCdzTPC;
871 track.fCzz = fCzzTPC;
873 // copy the TPCinner parameters
874 if(track.fTPCInner) *track.fTPCInner = *fTPCInner;
875 else track.fTPCInner = new AliExternalTrackParam(*fTPCInner);
878 track.fCddTPC = fCddTPC;
879 track.fCdzTPC = fCdzTPC;
880 track.fCzzTPC = fCzzTPC;
881 track.fCchi2TPC = fCchi2TPC;
884 // copy all other TPC specific parameters
886 // replace label by TPC label
887 track.fLabel = fTPCLabel;
888 track.fTPCLabel = fTPCLabel;
890 track.fTPCchi2 = fTPCchi2;
891 track.fTPCsignal = fTPCsignal;
892 track.fTPCsignalS = fTPCsignalS;
893 for(int i = 0;i<4;++i)track.fTPCPoints[i] = fTPCPoints[i];
895 track.fTPCncls = fTPCncls;
896 track.fTPCnclsF = fTPCnclsF;
897 track.fTPCsignalN = fTPCsignalN;
900 for(int i=0;i<AliPID::kSPECIES;++i){
901 track.fTPCr[i] = fTPCr[i];
902 // combined PID is TPC only!
903 track.fR[i] = fTPCr[i];
905 track.fTPCClusterMap = fTPCClusterMap;
906 track.fTPCSharedMap = fTPCSharedMap;
910 track.fFlags = kTPCin;
914 for (Int_t i=0;i<3;i++) track.fKinkIndexes[i] = fKinkIndexes[i];
920 //_______________________________________________________________________
921 void AliESDtrack::MakeMiniESDtrack(){
922 // Resets everything except
923 // fFlags: Reconstruction status flags
924 // fLabel: Track label
925 // fID: Unique ID of the track
926 // Impact parameter information
927 // fR[AliPID::kSPECIES]: combined "detector response probability"
928 // Running track parameters in the base class (AliExternalTrackParam)
932 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTrackTime[i] = 0;
934 // Reset track parameters constrained to the primary vertex
937 // Reset track parameters at the inner wall of TPC
939 delete fTPCInner;fTPCInner=0;
940 // Reset track parameters at the inner wall of the TRD
944 // Reset ITS track related information
949 for (Int_t i=0;i<AliPID::kSPECIES;i++) fITSr[i]=0;
952 // Reset TPC related track information
961 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTPCr[i]=0;
963 for (Int_t i=0;i<4;i++) fTPCPoints[i] = 0;
964 for (Int_t i=0; i<3;i++) fKinkIndexes[i] = 0;
965 for (Int_t i=0; i<3;i++) fV0Indexes[i] = 0;
967 // Reset TRD related track information
972 for (Int_t i=0;i<kTRDnPlanes;i++) {
975 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTRDr[i] = 0;
985 // Reset TOF related track information
993 for (Int_t i=0;i<AliPID::kSPECIES;i++) fTOFr[i] = 0;
994 for (Int_t i=0;i<3;i++) fTOFLabel[i] = 0;
995 for (Int_t i=0;i<10;i++) fTOFInfo[i] = 0;
997 // Reset HMPID related track information
1002 for (Int_t i=0;i<AliPID::kSPECIES;i++) fHMPIDr[i] = 0;
1009 fEMCALindex = kEMCALNoMatch;
1011 delete fFriendTrack; fFriendTrack = 0;
1013 //_______________________________________________________________________
1014 Double_t AliESDtrack::GetMass() const {
1015 // Returns the mass of the most probable particle type
1018 for (Int_t i=0; i<AliPID::kSPECIES; i++) {
1019 if (fR[i]>max) {k=i; max=fR[i];}
1021 if (k==0) { // dE/dx "crossing points" in the TPC
1023 if ((p>0.38)&&(p<0.48))
1024 if (fR[0]<fR[3]*10.) return AliPID::ParticleMass(AliPID::kKaon);
1025 if ((p>0.75)&&(p<0.85))
1026 if (fR[0]<fR[4]*10.) return AliPID::ParticleMass(AliPID::kProton);
1029 if (k==1) return AliPID::ParticleMass(AliPID::kMuon);
1030 if (k==2||k==-1) return AliPID::ParticleMass(AliPID::kPion);
1031 if (k==3) return AliPID::ParticleMass(AliPID::kKaon);
1032 if (k==4) return AliPID::ParticleMass(AliPID::kProton);
1033 AliWarning("Undefined mass !");
1034 return AliPID::ParticleMass(AliPID::kPion);
1037 //______________________________________________________________________________
1038 Double_t AliESDtrack::E() const
1040 // Returns the energy of the particle given its assumed mass.
1041 // Assumes the pion mass if the particle can't be identified properly.
1045 return TMath::Sqrt(p*p + m*m);
1048 //______________________________________________________________________________
1049 Double_t AliESDtrack::Y() const
1051 // Returns the rapidity of a particle given its assumed mass.
1052 // Assumes the pion mass if the particle can't be identified properly.
1056 if (e != TMath::Abs(pz)) { // energy was not equal to pz
1057 return 0.5*TMath::Log((e+pz)/(e-pz));
1058 } else { // energy was equal to pz
1063 //_______________________________________________________________________
1064 Bool_t AliESDtrack::UpdateTrackParams(const AliKalmanTrack *t, ULong_t flags){
1066 // This function updates track's running parameters
1072 fLabel=t->GetLabel();
1074 if (t->IsStartedTimeIntegral()) {
1076 Double_t times[10];t->GetIntegratedTimes(times); SetIntegratedTimes(times);
1077 SetIntegratedLength(t->GetIntegratedLength());
1080 Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
1084 case kITSin: case kITSout: case kITSrefit:
1086 fITSncls=t->GetNumberOfClusters();
1087 index=fFriendTrack->GetITSindices();
1088 for (Int_t i=0;i<AliESDfriendTrack::kMaxITScluster;i++) {
1089 index[i]=t->GetClusterIndex(i);
1091 Int_t l=(index[i] & 0xf0000000) >> 28;
1092 SETBIT(fITSClusterMap,l);
1095 fITSchi2=t->GetChi2();
1096 fITSsignal=t->GetPIDsignal();
1097 fITSLabel = t->GetLabel();
1098 // keep in fOp the parameters outside ITS for ITS stand-alone tracks
1099 if (flags==kITSout) {
1100 if (!fOp) fOp=new AliExternalTrackParam(*t);
1102 fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
1106 case kTPCin: case kTPCrefit:
1107 fTPCLabel = t->GetLabel();
1108 if (flags==kTPCin) fTPCInner=new AliExternalTrackParam(*t);
1109 if (!fIp) fIp=new AliExternalTrackParam(*t);
1111 fIp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
1113 index=fFriendTrack->GetTPCindices();
1114 if (flags & kTPCout){
1115 if (!fOp) fOp=new AliExternalTrackParam(*t);
1117 fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
1119 fTPCncls=t->GetNumberOfClusters();
1120 fTPCchi2=t->GetChi2();
1122 {//prevrow must be declared in separate namespace, otherwise compiler cries:
1123 //"jump to case label crosses initialization of `Int_t prevrow'"
1125 // for (Int_t i=0;i<fTPCncls;i++)
1126 for (Int_t i=0;i<AliESDfriendTrack::kMaxTPCcluster;i++)
1128 index[i]=t->GetClusterIndex(i);
1129 Int_t idx = index[i];
1131 if (idx<0) continue;
1133 // Piotr's Cluster Map for HBT
1134 // ### please change accordingly if cluster array is changing
1135 // to "New TPC Tracking" style (with gaps in array)
1136 Int_t sect = (idx&0xff000000)>>24;
1137 Int_t row = (idx&0x00ff0000)>>16;
1138 if (sect > 18) row +=63; //if it is outer sector, add number of inner sectors
1140 fTPCClusterMap.SetBitNumber(row,kTRUE);
1142 //Fill the gap between previous row and this row with 0 bits
1143 //In case ### pleas change it as well - just set bit 0 in case there
1144 //is no associated clusters for current "i"
1147 prevrow = row;//if previous bit was not assigned yet == this is the first one
1150 { //we don't know the order (inner to outer or reverse)
1151 //just to be save in case it is going to change
1164 for (Int_t j = n+1; j < m; j++)
1166 fTPCClusterMap.SetBitNumber(j,kFALSE);
1170 // End Of Piotr's Cluster Map for HBT
1173 fTPCsignal=t->GetPIDsignal();
1176 case kTRDout: case kTRDin: case kTRDrefit:
1177 index = fFriendTrack->GetTRDindices();
1178 fTRDLabel = t->GetLabel();
1179 fTRDchi2 = t->GetChi2();
1180 fTRDncls = t->GetNumberOfClusters();
1181 for (Int_t i=0;i<6;i++) index[i]=t->GetTrackletIndex(i);
1183 fTRDsignal=t->GetPIDsignal();
1186 if (!fOp) fOp=new AliExternalTrackParam(*t);
1188 fOp->Set(t->GetX(),t->GetAlpha(),t->GetParameter(),t->GetCovariance());
1189 fTRDncls0 = t->GetNumberOfClusters();
1198 AliError("Wrong flag !");
1205 //_______________________________________________________________________
1206 void AliESDtrack::GetExternalParameters(Double_t &x, Double_t p[5]) const {
1207 //---------------------------------------------------------------------
1208 // This function returns external representation of the track parameters
1209 //---------------------------------------------------------------------
1211 for (Int_t i=0; i<5; i++) p[i]=GetParameter()[i];
1214 //_______________________________________________________________________
1215 void AliESDtrack::GetExternalCovariance(Double_t cov[15]) const {
1216 //---------------------------------------------------------------------
1217 // This function returns external representation of the cov. matrix
1218 //---------------------------------------------------------------------
1219 for (Int_t i=0; i<15; i++) cov[i]=AliExternalTrackParam::GetCovariance()[i];
1222 //_______________________________________________________________________
1223 Bool_t AliESDtrack::GetConstrainedExternalParameters
1224 (Double_t &alpha, Double_t &x, Double_t p[5]) const {
1225 //---------------------------------------------------------------------
1226 // This function returns the constrained external track parameters
1227 //---------------------------------------------------------------------
1228 if (!fCp) return kFALSE;
1229 alpha=fCp->GetAlpha();
1231 for (Int_t i=0; i<5; i++) p[i]=fCp->GetParameter()[i];
1235 //_______________________________________________________________________
1237 AliESDtrack::GetConstrainedExternalCovariance(Double_t c[15]) const {
1238 //---------------------------------------------------------------------
1239 // This function returns the constrained external cov. matrix
1240 //---------------------------------------------------------------------
1241 if (!fCp) return kFALSE;
1242 for (Int_t i=0; i<15; i++) c[i]=fCp->GetCovariance()[i];
1247 AliESDtrack::GetInnerExternalParameters
1248 (Double_t &alpha, Double_t &x, Double_t p[5]) const {
1249 //---------------------------------------------------------------------
1250 // This function returns external representation of the track parameters
1251 // at the inner layer of TPC
1252 //---------------------------------------------------------------------
1253 if (!fIp) return kFALSE;
1254 alpha=fIp->GetAlpha();
1256 for (Int_t i=0; i<5; i++) p[i]=fIp->GetParameter()[i];
1261 AliESDtrack::GetInnerExternalCovariance(Double_t cov[15]) const {
1262 //---------------------------------------------------------------------
1263 // This function returns external representation of the cov. matrix
1264 // at the inner layer of TPC
1265 //---------------------------------------------------------------------
1266 if (!fIp) return kFALSE;
1267 for (Int_t i=0; i<15; i++) cov[i]=fIp->GetCovariance()[i];
1272 AliESDtrack::SetOuterParam(const AliExternalTrackParam *p, ULong_t flags) {
1274 // This is a direct setter for the outer track parameters
1277 if (fOp) delete fOp;
1278 fOp=new AliExternalTrackParam(*p);
1282 AliESDtrack::GetOuterExternalParameters
1283 (Double_t &alpha, Double_t &x, Double_t p[5]) const {
1284 //---------------------------------------------------------------------
1285 // This function returns external representation of the track parameters
1286 // at the inner layer of TRD
1287 //---------------------------------------------------------------------
1288 if (!fOp) return kFALSE;
1289 alpha=fOp->GetAlpha();
1291 for (Int_t i=0; i<5; i++) p[i]=fOp->GetParameter()[i];
1296 AliESDtrack::GetOuterExternalCovariance(Double_t cov[15]) const {
1297 //---------------------------------------------------------------------
1298 // This function returns external representation of the cov. matrix
1299 // at the inner layer of TRD
1300 //---------------------------------------------------------------------
1301 if (!fOp) return kFALSE;
1302 for (Int_t i=0; i<15; i++) cov[i]=fOp->GetCovariance()[i];
1306 Int_t AliESDtrack::GetNcls(Int_t idet) const
1308 // Get number of clusters by subdetector index
1322 if (fTOFindex != -1)
1328 if ((fHMPIDcluIdx >= 0) && (fHMPIDcluIdx < 7000000)) {
1329 if ((fHMPIDcluIdx%1000000 != 9999) && (fHMPIDcluIdx%1000000 != 99999)) {
1340 Int_t AliESDtrack::GetClusters(Int_t idet, Int_t *idx) const
1342 // Get cluster index array by subdetector index
1347 ncls = GetITSclusters(idx);
1350 ncls = GetTPCclusters(idx);
1353 ncls = GetTRDclusters(idx);
1356 if (fTOFindex != -1) {
1364 if ((fHMPIDcluIdx >= 0) && (fHMPIDcluIdx < 7000000)) {
1365 if ((fHMPIDcluIdx%1000000 != 9999) && (fHMPIDcluIdx%1000000 != 99999)) {
1366 idx[0] = GetHMPIDcluIdx();
1379 //_______________________________________________________________________
1380 void AliESDtrack::GetIntegratedTimes(Double_t *times) const {
1381 // Returns the array with integrated times for each particle hypothesis
1382 for (Int_t i=0; i<AliPID::kSPECIES; i++) times[i]=fTrackTime[i];
1385 //_______________________________________________________________________
1386 void AliESDtrack::SetIntegratedTimes(const Double_t *times) {
1387 // Sets the array with integrated times for each particle hypotesis
1388 for (Int_t i=0; i<AliPID::kSPECIES; i++) fTrackTime[i]=times[i];
1391 //_______________________________________________________________________
1392 void AliESDtrack::SetITSpid(const Double_t *p) {
1393 // Sets values for the probability of each particle type (in ITS)
1394 SetPIDValues(fITSr,p,AliPID::kSPECIES);
1395 SetStatus(AliESDtrack::kITSpid);
1398 //_______________________________________________________________________
1399 void AliESDtrack::GetITSpid(Double_t *p) const {
1400 // Gets the probability of each particle type (in ITS)
1401 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fITSr[i];
1404 //_______________________________________________________________________
1405 Char_t AliESDtrack::GetITSclusters(Int_t *idx) const {
1406 //---------------------------------------------------------------------
1407 // This function returns indices of the assgined ITS clusters
1408 //---------------------------------------------------------------------
1410 Int_t *index=fFriendTrack->GetITSindices();
1411 for (Int_t i=0; i<AliESDfriendTrack::kMaxITScluster; i++) {
1412 if ( (i>=fITSncls) && (i<6) ) idx[i]=-1;
1413 else idx[i]=index[i];
1419 //_______________________________________________________________________
1420 Bool_t AliESDtrack::GetITSModuleIndexInfo(Int_t ilayer,Int_t &idet,Int_t &status,
1421 Float_t &xloc,Float_t &zloc) const {
1422 //----------------------------------------------------------------------
1423 // This function encodes in the module number also the status of cluster association
1424 // "status" can have the following values:
1425 // 1 "found" (cluster is associated),
1426 // 2 "dead" (module is dead from OCDB),
1427 // 3 "skipped" (module or layer forced to be skipped),
1428 // 4 "outinz" (track out of z acceptance),
1429 // 5 "nocls" (no clusters in the road),
1430 // 6 "norefit" (cluster rejected during refit),
1431 // 7 "deadzspd" (holes in z in SPD)
1432 // Also given are the coordinates of the crossing point of track and module
1433 // (in the local module ref. system)
1434 // WARNING: THIS METHOD HAS TO BE SYNCHRONIZED WITH AliITStrackV2::GetModuleIndexInfo()!
1435 //----------------------------------------------------------------------
1437 if(fITSModule[ilayer]==-1) {
1440 xloc=-99.; zloc=-99.;
1444 Int_t module = fITSModule[ilayer];
1446 idet = Int_t(module/1000000);
1448 module -= idet*1000000;
1450 status = Int_t(module/100000);
1452 module -= status*100000;
1454 Int_t signs = Int_t(module/10000);
1456 module-=signs*10000;
1458 Int_t xInt = Int_t(module/100);
1461 Int_t zInt = module;
1463 if(signs==1) { xInt*=1; zInt*=1; }
1464 if(signs==2) { xInt*=1; zInt*=-1; }
1465 if(signs==3) { xInt*=-1; zInt*=1; }
1466 if(signs==4) { xInt*=-1; zInt*=-1; }
1468 xloc = 0.1*(Float_t)xInt;
1469 zloc = 0.1*(Float_t)zInt;
1471 if(status==4) idet = -1;
1476 //_______________________________________________________________________
1477 UShort_t AliESDtrack::GetTPCclusters(Int_t *idx) const {
1478 //---------------------------------------------------------------------
1479 // This function returns indices of the assgined ITS clusters
1480 //---------------------------------------------------------------------
1482 Int_t *index=fFriendTrack->GetTPCindices();
1483 for (Int_t i=0; i<AliESDfriendTrack::kMaxTPCcluster; i++) idx[i]=index[i];
1488 Double_t AliESDtrack::GetTPCdensity(Int_t row0, Int_t row1) const{
1490 // GetDensity of the clusters on given region between row0 and row1
1491 // Dead zone effect takin into acoount
1496 Int_t *index=fFriendTrack->GetTPCindices();
1497 for (Int_t i=row0;i<=row1;i++){
1498 Int_t idx = index[i];
1499 if (idx!=-1) good++; // track outside of dead zone
1502 Float_t density=0.5;
1503 if (good>(row1-row0)*0.5) density = Float_t(found)/Float_t(good);
1507 //_______________________________________________________________________
1508 void AliESDtrack::SetTPCpid(const Double_t *p) {
1509 // Sets values for the probability of each particle type (in TPC)
1510 SetPIDValues(fTPCr,p,AliPID::kSPECIES);
1511 SetStatus(AliESDtrack::kTPCpid);
1514 //_______________________________________________________________________
1515 void AliESDtrack::GetTPCpid(Double_t *p) const {
1516 // Gets the probability of each particle type (in TPC)
1517 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTPCr[i];
1520 //_______________________________________________________________________
1521 UChar_t AliESDtrack::GetTRDclusters(Int_t *idx) const {
1522 //---------------------------------------------------------------------
1523 // This function returns indices of the assgined TRD clusters
1524 //---------------------------------------------------------------------
1526 Int_t *index=fFriendTrack->GetTRDindices();
1527 for (Int_t i=0; i<AliESDfriendTrack::kMaxTRDcluster; i++) idx[i]=index[i];
1532 //_______________________________________________________________________
1533 UChar_t AliESDtrack::GetTRDtracklets(Int_t *idx) const {
1534 //---------------------------------------------------------------------
1535 // This function returns indices of the assigned TRD tracklets
1536 //---------------------------------------------------------------------
1538 Int_t *index=fFriendTrack->GetTRDindices();
1539 for (Int_t i=0; i<6/*AliESDfriendTrack::kMaxTRDcluster*/; i++) idx[i]=index[i];
1544 //_______________________________________________________________________
1545 void AliESDtrack::SetTRDpid(const Double_t *p) {
1546 // Sets values for the probability of each particle type (in TRD)
1547 SetPIDValues(fTRDr,p,AliPID::kSPECIES);
1548 SetStatus(AliESDtrack::kTRDpid);
1551 //_______________________________________________________________________
1552 void AliESDtrack::GetTRDpid(Double_t *p) const {
1553 // Gets the probability of each particle type (in TRD)
1554 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTRDr[i];
1557 //_______________________________________________________________________
1558 void AliESDtrack::SetTRDpid(Int_t iSpecies, Float_t p)
1560 // Sets the probability of particle type iSpecies to p (in TRD)
1561 fTRDr[iSpecies] = p;
1564 Double_t AliESDtrack::GetTRDpid(Int_t iSpecies) const
1566 // Returns the probability of particle type iSpecies (in TRD)
1567 return fTRDr[iSpecies];
1570 void AliESDtrack::SetNumberOfTRDslices(Int_t n) {
1571 //Sets the number of slices used for PID
1572 if (fTRDnSlices != 0) return;
1573 fTRDnSlices=kTRDnPlanes*n;
1574 fTRDslices=new Double32_t[fTRDnSlices];
1575 for (Int_t i=0; i<fTRDnSlices; i++) fTRDslices[i]=-1.;
1578 void AliESDtrack::SetTRDslice(Double_t q, Int_t plane, Int_t slice) {
1579 //Sets the charge q in the slice of the plane
1580 Int_t ns=GetNumberOfTRDslices();
1582 AliError("No TRD slices allocated for this track !");
1586 if ((plane<0) || (plane>=kTRDnPlanes)) {
1587 AliError("Wrong TRD plane !");
1590 if ((slice<0) || (slice>=ns)) {
1591 AliError("Wrong TRD slice !");
1594 Int_t n=plane*ns + slice;
1598 Double_t AliESDtrack::GetTRDslice(Int_t plane, Int_t slice) const {
1599 //Gets the charge from the slice of the plane
1600 Int_t ns=GetNumberOfTRDslices();
1602 //AliError("No TRD slices allocated for this track !");
1606 if ((plane<0) || (plane>=kTRDnPlanes)) {
1607 AliError("Wrong TRD plane !");
1610 if ((slice<-1) || (slice>=ns)) {
1611 //AliError("Wrong TRD slice !");
1617 for (Int_t i=0; i<ns; i++) q+=fTRDslices[plane*ns + i];
1621 return fTRDslices[plane*ns + slice];
1625 //_______________________________________________________________________
1626 void AliESDtrack::SetTOFpid(const Double_t *p) {
1627 // Sets the probability of each particle type (in TOF)
1628 SetPIDValues(fTOFr,p,AliPID::kSPECIES);
1629 SetStatus(AliESDtrack::kTOFpid);
1632 //_______________________________________________________________________
1633 void AliESDtrack::SetTOFLabel(const Int_t *p) {
1635 for (Int_t i=0; i<3; i++) fTOFLabel[i]=p[i];
1638 //_______________________________________________________________________
1639 void AliESDtrack::GetTOFpid(Double_t *p) const {
1640 // Gets probabilities of each particle type (in TOF)
1641 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fTOFr[i];
1644 //_______________________________________________________________________
1645 void AliESDtrack::GetTOFLabel(Int_t *p) const {
1647 for (Int_t i=0; i<3; i++) p[i]=fTOFLabel[i];
1650 //_______________________________________________________________________
1651 void AliESDtrack::GetTOFInfo(Float_t *info) const {
1653 for (Int_t i=0; i<10; i++) info[i]=fTOFInfo[i];
1656 //_______________________________________________________________________
1657 void AliESDtrack::SetTOFInfo(Float_t*info) {
1659 for (Int_t i=0; i<10; i++) fTOFInfo[i]=info[i];
1664 //_______________________________________________________________________
1665 void AliESDtrack::SetHMPIDpid(const Double_t *p) {
1666 // Sets the probability of each particle type (in HMPID)
1667 SetPIDValues(fHMPIDr,p,AliPID::kSPECIES);
1668 SetStatus(AliESDtrack::kHMPIDpid);
1671 //_______________________________________________________________________
1672 void AliESDtrack::GetHMPIDpid(Double_t *p) const {
1673 // Gets probabilities of each particle type (in HMPID)
1674 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fHMPIDr[i];
1679 //_______________________________________________________________________
1680 void AliESDtrack::SetESDpid(const Double_t *p) {
1681 // Sets the probability of each particle type for the ESD track
1682 SetPIDValues(fR,p,AliPID::kSPECIES);
1683 SetStatus(AliESDtrack::kESDpid);
1686 //_______________________________________________________________________
1687 void AliESDtrack::GetESDpid(Double_t *p) const {
1688 // Gets probability of each particle type for the ESD track
1689 for (Int_t i=0; i<AliPID::kSPECIES; i++) p[i]=fR[i];
1692 //_______________________________________________________________________
1693 Bool_t AliESDtrack::RelateToVertexTPC(const AliESDVertex *vtx,
1694 Double_t b, Double_t maxd, AliExternalTrackParam *cParam) {
1696 // Try to relate the TPC-only track parameters to the vertex "vtx",
1697 // if the (rough) transverse impact parameter is not bigger then "maxd".
1698 // Magnetic field is "b" (kG).
1700 // a) The TPC-only paramters are extapolated to the DCA to the vertex.
1701 // b) The impact parameters and their covariance matrix are calculated.
1702 // c) An attempt to constrain the TPC-only params to the vertex is done.
1703 // The constrained params are returned via "cParam".
1705 // In the case of success, the returned value is kTRUE
1706 // otherwise, it's kFALSE)
1709 if (!fTPCInner) return kFALSE;
1710 if (!vtx) return kFALSE;
1712 Double_t dz[2],cov[3];
1713 if (!fTPCInner->PropagateToDCA(vtx, b, maxd, dz, cov)) return kFALSE;
1721 Double_t covar[6]; vtx->GetCovMatrix(covar);
1722 Double_t p[2]={GetParameter()[0]-dz[0],GetParameter()[1]-dz[1]};
1723 Double_t c[3]={covar[2],0.,covar[5]};
1725 Double_t chi2=GetPredictedChi2(p,c);
1726 if (chi2>kVeryBig) return kFALSE;
1730 if (!cParam) return kTRUE;
1732 *cParam = *fTPCInner;
1733 if (!cParam->Update(p,c)) return kFALSE;
1738 //_______________________________________________________________________
1739 Bool_t AliESDtrack::RelateToVertex(const AliESDVertex *vtx,
1740 Double_t b, Double_t maxd, AliExternalTrackParam *cParam) {
1742 // Try to relate this track to the vertex "vtx",
1743 // if the (rough) transverse impact parameter is not bigger then "maxd".
1744 // Magnetic field is "b" (kG).
1746 // a) The track gets extapolated to the DCA to the vertex.
1747 // b) The impact parameters and their covariance matrix are calculated.
1748 // c) An attempt to constrain this track to the vertex is done.
1749 // The constrained params are returned via "cParam".
1751 // In the case of success, the returned value is kTRUE
1752 // (otherwise, it's kFALSE)
1755 if (!vtx) return kFALSE;
1757 Double_t dz[2],cov[3];
1758 if (!PropagateToDCA(vtx, b, maxd, dz, cov)) return kFALSE;
1766 Double_t covar[6]; vtx->GetCovMatrix(covar);
1767 Double_t p[2]={GetParameter()[0]-dz[0],GetParameter()[1]-dz[1]};
1768 Double_t c[3]={covar[2],0.,covar[5]};
1770 Double_t chi2=GetPredictedChi2(p,c);
1771 if (chi2>kVeryBig) return kFALSE;
1776 //--- Could now these lines be removed ? ---
1778 fCp=new AliExternalTrackParam(*this);
1780 if (!fCp->Update(p,c)) {delete fCp; fCp=0; return kFALSE;}
1781 //----------------------------------------
1784 if (!cParam) return kTRUE;
1787 if (!cParam->Update(p,c)) return kFALSE;
1792 //_______________________________________________________________________
1793 void AliESDtrack::Print(Option_t *) const {
1794 // Prints info on the track
1795 AliExternalTrackParam::Print();
1796 printf("ESD track info\n") ;
1797 Double_t p[AliPID::kSPECIESN] ;
1799 if( IsOn(kITSpid) ){
1800 printf("From ITS: ") ;
1802 for(index = 0 ; index < AliPID::kSPECIES; index++)
1803 printf("%f, ", p[index]) ;
1804 printf("\n signal = %f\n", GetITSsignal()) ;
1806 if( IsOn(kTPCpid) ){
1807 printf("From TPC: ") ;
1809 for(index = 0 ; index < AliPID::kSPECIES; index++)
1810 printf("%f, ", p[index]) ;
1811 printf("\n signal = %f\n", GetTPCsignal()) ;
1813 if( IsOn(kTRDpid) ){
1814 printf("From TRD: ") ;
1816 for(index = 0 ; index < AliPID::kSPECIES; index++)
1817 printf("%f, ", p[index]) ;
1818 printf("\n signal = %f\n", GetTRDsignal()) ;
1820 if( IsOn(kTOFpid) ){
1821 printf("From TOF: ") ;
1823 for(index = 0 ; index < AliPID::kSPECIES; index++)
1824 printf("%f, ", p[index]) ;
1825 printf("\n signal = %f\n", GetTOFsignal()) ;
1827 if( IsOn(kHMPIDpid) ){
1828 printf("From HMPID: ") ;
1830 for(index = 0 ; index < AliPID::kSPECIES; index++)
1831 printf("%f, ", p[index]) ;
1832 printf("\n signal = %f\n", GetHMPIDsignal()) ;
1838 // Draw functionality
1839 // Origin: Marian Ivanov, Marian.Ivanov@cern.ch
1841 void AliESDtrack::FillPolymarker(TPolyMarker3D *pol, Float_t magF, Float_t minR, Float_t maxR, Float_t stepR){
1843 // Fill points in the polymarker
1846 arrayRef.AddLast(new AliExternalTrackParam(*this));
1847 if (fIp) arrayRef.AddLast(new AliExternalTrackParam(*fIp));
1848 if (fOp) arrayRef.AddLast(new AliExternalTrackParam(*fOp));
1850 Double_t mpos[3]={0,0,0};
1851 Int_t entries=arrayRef.GetEntries();
1852 for (Int_t i=0;i<entries;i++){
1854 ((AliExternalTrackParam*)arrayRef.At(i))->GetXYZ(pos);
1855 mpos[0]+=pos[0]/entries;
1856 mpos[1]+=pos[1]/entries;
1857 mpos[2]+=pos[2]/entries;
1859 // Rotate to the mean position
1861 Float_t fi= TMath::ATan2(mpos[1],mpos[0]);
1862 for (Int_t i=0;i<entries;i++){
1863 Bool_t res = ((AliExternalTrackParam*)arrayRef.At(i))->Rotate(fi);
1864 if (!res) delete arrayRef.RemoveAt(i);
1867 for (Double_t r=minR; r<maxR; r+=stepR){
1869 Double_t mlpos[3]={0,0,0};
1870 for (Int_t i=0;i<entries;i++){
1871 Double_t point[3]={0,0,0};
1872 AliExternalTrackParam *param = ((AliExternalTrackParam*)arrayRef.At(i));
1873 if (!param) continue;
1874 if (param->GetXYZAt(r,magF,point)){
1875 Double_t weight = 1./(10.+(r-param->GetX())*(r-param->GetX()));
1877 mlpos[0]+=point[0]*weight;
1878 mlpos[1]+=point[1]*weight;
1879 mlpos[2]+=point[2]*weight;
1886 pol->SetPoint(counter,mlpos[0],mlpos[1], mlpos[2]);
1887 printf("xyz\t%f\t%f\t%f\n",mlpos[0], mlpos[1],mlpos[2]);