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 **************************************************************************/
17 ///////////////////////////////////////////////////////////////////////////////
19 // Time Projection Chamber //
20 // Comparison macro for reconstructed tracks - ESDs V0s //
22 // marian.ivanov@cern.ch //
39 #include "TBenchmark.h"
40 #include "TStopwatch.h"
41 #include "TParticle.h"
56 #include "AliESDtrack.h"
57 #include "AliSimDigits.h"
58 #include "AliTPCParam.h"
60 #include "AliTPCLoader.h"
61 #include "AliDetector.h"
62 #include "AliTrackReference.h"
64 #include "AliTPCParamSR.h"
65 #include "AliTracker.h"
66 #include "AliComplexCluster.h"
69 #include "AliESDfriend.h"
70 #include "AliESDtrack.h"
71 #include "AliTPCseed.h"
72 #include "AliITStrackMI.h"
73 #include "AliTRDtrack.h"
75 #include "AliESDVertex.h"
76 #include "AliExternalTrackParam.h"
77 #include "AliESDkink.h"
81 #include "AliTreeDraw.h"
82 #include "AliGenInfo.h"
83 #include "AliRecInfo.h"
87 ClassImp(AliESDRecInfo)
88 ClassImp(AliESDRecV0Info)
89 ClassImp(AliESDRecKinkInfo)
94 AliTPCParam * GetTPCParam(){
95 AliTPCParamSR * par = new AliTPCParamSR;
103 AliESDRecInfo::AliESDRecInfo():
104 fITSOn(0), // ITS refitted inward
105 fTRDOn(0), // ITS refitted inward
106 fDeltaP(0), //delta of momenta
108 fReconstructed(0), //flag if track was reconstructed
109 fFake(0), // fake track
110 fMultiple(0), // number of reconstructions
111 fTPCOn(0), // TPC refitted inward
112 fBestTOFmatch(0), //best matching between times
113 fESDtrack(0), // esd track
114 fTrackF(0), // friend track
115 fTPCtrack(0), // tpc track
116 fITStrack(0), // its track
117 fTRDtrack(0) // trd track
120 // default constructor
125 AliESDRecInfo::AliESDRecInfo(const AliESDRecInfo& recinfo):
131 memcpy(this,&recinfo, sizeof(recinfo));
132 fESDtrack=0; fTrackF=0; fTPCtrack=0;fITStrack=0;fTRDtrack=0;
133 SetESDtrack(recinfo.GetESDtrack());
137 AliESDRecInfo::~AliESDRecInfo()
143 if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
144 if (fTrackF) { delete fTrackF; fTrackF=0;}
145 if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
146 if (fITStrack) { delete fITStrack; fITStrack=0;}
147 if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
153 void AliESDRecInfo::Reset()
161 if (fESDtrack) { delete fESDtrack; fESDtrack=0;}
162 if (fTrackF) { delete fTrackF; fTrackF=0;}
163 if (fTPCtrack) { delete fTPCtrack; fTPCtrack=0;}
164 if (fITStrack) { delete fITStrack; fITStrack=0;}
165 if (fTRDtrack) { delete fTRDtrack; fTRDtrack=0;}
168 void AliESDRecInfo::SetESDtrack(const AliESDtrack *track){
172 if (fESDtrack) delete fESDtrack;
173 fESDtrack = (AliESDtrack*)track->Clone();
174 if (track->GetFriendTrack()){
175 if (fTrackF) delete fTrackF;
176 fTrackF = (AliESDfriendTrack*)track->GetFriendTrack()->Clone();
177 if (fTrackF->GetCalibObject(0)){
178 if (fTPCtrack) delete fTPCtrack;
179 fTPCtrack = (AliTPCseed*)fTrackF->GetCalibObject(0)->Clone();
185 void AliESDRecInfo::UpdatePoints(AliESDtrack*track)
189 Int_t iclusters[200];
190 Float_t density[160];
191 for (Int_t i=0;i<160;i++) density[i]=-1.;
195 if (fTPCPoints[0]<fTPCPoints[1]) return;
196 // Int_t nclusters=track->GetTPCclusters(iclusters);
202 for (Int_t i=0;i<160;i++){
203 Int_t last = i-range;
204 if (nall<range) nall++;
206 if (iclusters[last]>0&& (iclusters[last]&0x8000)==0) ngood--;
207 if (iclusters[last]==-1) undeff--;
209 if (iclusters[i]>0&& (iclusters[i]&0x8000)==0) ngood++;
210 if (iclusters[i]==-1) undeff++;
211 if (nall==range &&undeff<range/2) density[i-range/2] = Float_t(ngood)/Float_t(nall-undeff);
215 for (Int_t i=0;i<160;i++){
216 if (density[i]<0) continue;
217 if (density[i]>maxdens){
224 fTPCPoints[3] = maxdens;
225 fTPCPoints[1] = indexmax;
228 for (Int_t i=indexmax;i<160;i++){
229 if (density[i]<0) continue;
230 if (density[i]<maxdens/2.) {
237 for (Int_t i=indexmax;i>0;i--){
238 if (density[i]<0) continue;
239 if (density[i]<maxdens/2.) {
245 // Density at the last 30 padrows
250 for (Int_t i=159;i>0;i--){
251 if (iclusters[i]==-1) continue; //dead zone
253 if (iclusters[i]>0) ngood++;
256 fTPCPoints[4] = Float_t(ngood)/Float_t(nall);
258 if ((track->GetStatus()&AliESDtrack::kITSrefit)>0) fTPCPoints[0]=-1;
265 void AliESDRecInfo::Update(AliMCInfo* info,AliTPCParam * /*par*/, Bool_t reconstructed, AliESD */*event*/)
269 //calculates derived variables
272 UpdatePoints(fESDtrack);
274 AliTrackReference * ref = &(info->fTrackRef);
275 fTPCinR0[0] = info->fTrackRef.X();
276 fTPCinR0[1] = info->fTrackRef.Y();
277 fTPCinR0[2] = info->fTrackRef.Z();
278 fTPCinR0[3] = TMath::Sqrt(fTPCinR0[0]*fTPCinR0[0]+fTPCinR0[1]*fTPCinR0[1]);
279 fTPCinR0[4] = TMath::ATan2(fTPCinR0[1],fTPCinR0[0]);
281 fTPCinP0[0] = ref->Px();
282 fTPCinP0[1] = ref->Py();
283 fTPCinP0[2] = ref->Pz();
284 fTPCinP0[3] = ref->Pt();
285 fTPCinP0[4] = ref->P();
286 fDeltaP = (ref->P()-info->fParticle.P())/info->fParticle.P();
289 if (fTPCinP0[3]>0.0000001){
291 fTPCAngle0[0] = TMath::ATan2(fTPCinP0[1],fTPCinP0[0]);
292 fTPCAngle0[1] = TMath::ATan(fTPCinP0[2]/fTPCinP0[3]);
296 fITSinP0[0]=info->fParticle.Px();
297 fITSinP0[1]=info->fParticle.Py();
298 fITSinP0[2]=info->fParticle.Pz();
299 fITSinP0[3]=info->fParticle.Pt();
301 fITSinR0[0]=info->fParticle.Vx();
302 fITSinR0[1]=info->fParticle.Vy();
303 fITSinR0[2]=info->fParticle.Vz();
304 fITSinR0[3] = TMath::Sqrt(fITSinR0[0]*fITSinR0[0]+fITSinR0[1]*fITSinR0[1]);
305 fITSinR0[4] = TMath::ATan2(fITSinR0[1],fITSinR0[0]);
308 if (fITSinP0[3]>0.0000001){
309 fITSAngle0[0] = TMath::ATan2(fITSinP0[1],fITSinP0[0]);
310 fITSAngle0[1] = TMath::ATan(fITSinP0[2]/fITSinP0[3]);
313 for (Int_t i=0;i<4;i++) fStatus[i] =0;
314 fReconstructed = kFALSE;
318 if (reconstructed==kFALSE) return;
320 fLabels[0] = info->fLabel;
321 fLabels[1] = info->fPrimPart;
322 fReconstructed = kTRUE;
323 fTPCOn = ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0) ? kTRUE : kFALSE;
324 fITSOn = ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0) ? kTRUE : kFALSE;
325 fTRDOn = ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0) ? kTRUE : kFALSE;
328 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCrefit)>0){
332 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCout)>0){
336 if ((fESDtrack->GetStatus()&AliESDtrack::kTPCin)>0)
341 if ((fESDtrack->GetStatus()&AliESDtrack::kITSout)>0){
345 if ((fESDtrack->GetStatus()&AliESDtrack::kITSrefit)>0){
355 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDrefit)>0){
359 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDout)>0){
363 if ((fESDtrack->GetStatus()&AliESDtrack::kTRDStop)>0){
370 if (((fESDtrack->GetStatus()&AliESDtrack::kTOFout)>0)){
374 fESDtrack->GetIntegratedTimes(times);
375 for (Int_t i=0;i<5;i++){
376 if ( TMath::Abs(fESDtrack->GetTOFsignal()-times[i]) <TMath::Abs(fBestTOFmatch) ){
377 fBestTOFmatch = fESDtrack->GetTOFsignal()-times[i];
381 fESDtrack->GetTOFLabel(toflabel);
382 Bool_t toffake=kTRUE;
383 Bool_t tofdaughter=kFALSE;
384 for (Int_t i=0;i<3;i++){
385 if (toflabel[i]<0) continue;
386 if (toflabel[i]== TMath::Abs(fESDtrack->GetLabel())) toffake=kFALSE;
387 if (toflabel[i]==info->fParticle.GetDaughter(0) || (toflabel[i]==info->fParticle.GetDaughter(1))) tofdaughter=kTRUE; // decay product of original particle
390 if (toffake) fStatus[3] =3; //total fake
391 if (tofdaughter) fStatus[3]=2; //fake because of decay
397 if (fStatus[1]>0 &&info->fNTPCRef>0&&TMath::Abs(fTPCinP0[3])>0.0001){
399 fESDtrack->GetInnerXYZ(fTPCinR1);
400 fTPCinR1[3] = TMath::Sqrt(fTPCinR1[0]*fTPCinR1[0]+fTPCinR1[1]*fTPCinR1[1]);
401 fTPCinR1[4] = TMath::ATan2(fTPCinR1[1],fTPCinR1[0]);
402 fESDtrack->GetInnerPxPyPz(fTPCinP1);
403 fTPCinP1[3] = TMath::Sqrt(fTPCinP1[0]*fTPCinP1[0]+fTPCinP1[1]*fTPCinP1[1]);
404 fTPCinP1[4] = TMath::Sqrt(fTPCinP1[3]*fTPCinP1[3]+fTPCinP1[2]*fTPCinP1[2]);
407 if (fTPCinP1[3]>0.000000000000001){
408 fTPCAngle1[0] = TMath::ATan2(fTPCinP1[1],fTPCinP1[0]);
409 fTPCAngle1[1] = TMath::ATan(fTPCinP1[2]/fTPCinP1[3]);
411 Double_t cov[15], param[5],x, alpha;
412 fESDtrack->GetInnerExternalCovariance(cov);
413 fESDtrack->GetInnerExternalParameters(alpha, x,param);
416 fTPCDelta[0] = (fTPCinR0[4]-fTPCinR1[4])*fTPCinR1[3]; //delta rfi
417 fTPCPools[0] = fTPCDelta[0]/TMath::Sqrt(cov[0]);
418 fTPCDelta[1] = (fTPCinR0[2]-fTPCinR1[2]); //delta z
419 fTPCPools[1] = fTPCDelta[1]/TMath::Sqrt(cov[2]);
420 fTPCDelta[2] = (fTPCAngle0[0]-fTPCAngle1[0]);
421 fTPCPools[2] = fTPCDelta[2]/TMath::Sqrt(cov[5]);
422 fTPCDelta[3] = (TMath::Tan(fTPCAngle0[1])-TMath::Tan(fTPCAngle1[1]));
423 fTPCPools[3] = fTPCDelta[3]/TMath::Sqrt(cov[9]);
424 fTPCDelta[4] = (fTPCinP0[3]-fTPCinP1[3]);
425 Double_t sign = (param[4]>0)? 1.:-1;
427 fTPCPools[4] = sign*(1./fTPCinP0[3]-1./fTPCinP1[3])/TMath::Sqrt(TMath::Abs(cov[14]));
432 fESDtrack->GetExternalParameters(x,param);
433 // fESDtrack->GetConstrainedExternalParameters(x,param);
435 fESDtrack->GetExternalCovariance(cov);
436 //fESDtrack->GetConstrainedExternalCovariance(cov);
437 if (TMath::Abs(param[4])<0.0000000001) return;
439 fESDtrack->GetXYZ(fITSinR1);
440 fESDtrack->GetPxPyPz(fITSinP1);
441 fITSinP1[3] = TMath::Sqrt(fITSinP1[0]*fITSinP1[0]+fITSinP1[1]*fITSinP1[1]);
443 fITSinR1[3] = TMath::Sqrt(fITSinR1[0]*fITSinR1[0]+fITSinR1[1]*fITSinR1[1]);
444 fITSinR1[4] = TMath::ATan2(fITSinR1[1],fITSinR1[0]);
447 if (fITSinP1[3]>0.0000001){
448 fITSAngle1[0] = TMath::ATan2(fITSinP1[1],fITSinP1[0]);
449 fITSAngle1[1] = TMath::ATan(fITSinP1[2]/fITSinP1[3]);
453 fITSDelta[0] = (fITSinR0[4]-fITSinR1[4])*fITSinR1[3]; //delta rfi
454 fITSPools[0] = fITSDelta[0]/TMath::Sqrt(cov[0]);
455 fITSDelta[1] = (fITSinR0[2]-fITSinR1[2]); //delta z
456 fITSPools[1] = fITSDelta[1]/TMath::Sqrt(cov[2]);
457 fITSDelta[2] = (fITSAngle0[0]-fITSAngle1[0]);
458 fITSPools[2] = fITSDelta[2]/TMath::Sqrt(cov[5]);
459 fITSDelta[3] = (TMath::Tan(fITSAngle0[1])-TMath::Tan(fITSAngle1[1]));
460 fITSPools[3] = fITSDelta[3]/TMath::Sqrt(cov[9]);
461 fITSDelta[4] = (fITSinP0[3]-fITSinP1[3]);
462 Double_t sign = (param[4]>0) ? 1:-1;
464 fITSPools[4] = sign*(1./fITSinP0[3]-1./fITSinP1[3])/TMath::Sqrt(cov[14]);
470 void AliESDRecV0Info::Update(Float_t vertex[3])
473 if ( (fT1.fStatus[1]>0)&& (fT2.fStatus[1]>0)){
474 Float_t distance1,distance2;
475 Double_t xx[3],pp[3];
477 Double_t xd[3],pd[3],signd;
478 Double_t xm[3],pm[3],signm;
481 if (fT1.fITSOn&&fT2.fITSOn){
482 for (Int_t i=0;i<3;i++){
483 xd[i] = fT2.fITSinR1[i];
484 pd[i] = fT2.fITSinP1[i];
485 xm[i] = fT1.fITSinR1[i];
486 pm[i] = fT1.fITSinP1[i];
491 for (Int_t i=0;i<3;i++){
492 xd[i] = fT2.fTPCinR1[i];
493 pd[i] = fT2.fTPCinP1[i];
494 xm[i] = fT1.fTPCinR1[i];
495 pm[i] = fT1.fTPCinP1[i];
500 signd = fT2.fSign<0 ? -1:1;
501 signm = fT1.fSign<0 ? -1:1;
503 AliHelix dhelix1(xd,pd,signd);
504 dhelix1.GetMomentum(0,pp,0);
505 dhelix1.Evaluate(0,xx);
507 // Double_t x2[3],p2[3];
509 AliHelix mhelix(xm,pm,signm);
511 //find intersection linear
513 Double_t phase[2][2],radius[2];
514 Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
515 Double_t delta1=10000,delta2=10000;
518 fRs[0] = TMath::Sqrt(radius[0]);
519 fRs[1] = TMath::Sqrt(radius[0]);
522 fRs[0] =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
523 fRs[1] =TMath::Max(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
527 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
528 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
529 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
532 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
533 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
534 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
537 fRs[0] = TMath::Sqrt(radius[0]);
538 fRs[1] = TMath::Sqrt(radius[0]);
542 if (radius[0]<radius[1]){
543 fRs[0] = TMath::Sqrt(radius[0]);
544 fRs[1] = TMath::Sqrt(radius[1]);
548 fRs[0] = TMath::Sqrt(radius[1]);
549 fRs[1] = TMath::Sqrt(radius[0]);
555 distance1 = TMath::Min(delta1,delta2);
557 //find intersection parabolic
559 points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
560 delta1=10000,delta2=10000;
563 dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
566 dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
569 distance2 = TMath::Min(delta1,delta2);
570 if (distance2>100) fDist2 =100;
574 dhelix1.Evaluate(phase[0][0],fXr);
575 dhelix1.GetMomentum(phase[0][0],fPdr);
576 mhelix.GetMomentum(phase[0][1],fPm);
577 dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
578 fRr = TMath::Sqrt(radius[0]);
581 dhelix1.Evaluate(phase[1][0],fXr);
582 dhelix1.GetMomentum(phase[1][0], fPdr);
583 mhelix.GetMomentum(phase[1][1], fPm);
584 dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
585 fRr = TMath::Sqrt(radius[1]);
587 fDist1 = TMath::Sqrt(distance1);
588 fDist2 = TMath::Sqrt(distance2);
591 Double_t x,alpha,param[5],cov[15];
593 fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
594 fT1.GetESDtrack()->GetInnerExternalCovariance(cov);
595 AliExternalTrackParam paramm(x,alpha,param,cov);
597 fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
598 fT2.GetESDtrack()->GetInnerExternalCovariance(cov);
599 AliExternalTrackParam paramd(x,alpha,param,cov);
604 Float_t v[3] = {fXr[0]-vertex[0],fXr[1]-vertex[1],fXr[2]-vertex[2]};
605 Float_t p[3] = {fPdr[0]+fPm[0], fPdr[1]+fPm[1],fPdr[2]+fPm[2]};
607 Float_t vnorm2 = v[0]*v[0]+v[1]*v[1];
608 Float_t vnorm3 = TMath::Sqrt(v[2]*v[2]+vnorm2);
609 vnorm2 = TMath::Sqrt(vnorm2);
610 Float_t pnorm2 = p[0]*p[0]+p[1]*p[1];
611 Float_t pnorm3 = TMath::Sqrt(p[2]*p[2]+pnorm2);
612 pnorm2 = TMath::Sqrt(pnorm2);
614 fPointAngleFi = (v[0]*p[0]+v[1]*p[1])/(vnorm2*pnorm2);
615 fPointAngleTh = (v[2]*p[2]+vnorm2*pnorm2)/(vnorm3*pnorm3);
616 fPointAngle = (v[0]*p[0]+v[1]*p[1]+v[2]*p[2])/(vnorm3*pnorm3);
621 void AliESDRecKinkInfo::Update()
624 if ( (fT1.fTPCOn)&& (fT2.fTPCOn)){
626 // IF BOTH RECONSTRUCTED
627 Float_t distance1,distance2;
628 Double_t xx[3],pp[3];
630 Double_t xd[3],pd[3],signd;
631 Double_t xm[3],pm[3],signm;
632 for (Int_t i=0;i<3;i++){
633 xd[i] = fT2.fTPCinR1[i];
634 pd[i] = fT2.fTPCinP1[i];
635 xm[i] = fT1.fTPCinR1[i];
636 pm[i] = fT1.fTPCinP1[i];
638 signd = fT2.fSign<0 ? -1:1;
639 signm = fT1.fSign<0 ? -1:1;
641 AliHelix dhelix1(xd,pd,signd);
642 dhelix1.GetMomentum(0,pp,0);
643 dhelix1.Evaluate(0,xx);
645 // Double_t x2[3],p2[3];
647 AliHelix mhelix(xm,pm,signm);
649 //find intersection linear
651 Double_t phase[2][2],radius[2];
652 Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius,200);
653 Double_t delta1=10000,delta2=10000;
656 fMinR = TMath::Sqrt(radius[0]);
659 fMinR =TMath::Min(TMath::Sqrt(radius[0]),TMath::Sqrt(radius[1]));
663 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
664 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
665 dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
668 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
669 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
670 dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
673 fMinR = TMath::Sqrt(radius[0]);
677 if (radius[0]<radius[1]){
678 fMinR = TMath::Sqrt(radius[0]);
682 fMinR = TMath::Sqrt(radius[1]);
688 distance1 = TMath::Min(delta1,delta2);
690 //find intersection parabolic
692 points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
693 delta1=10000,delta2=10000;
696 dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
699 dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
702 distance2 = TMath::Min(delta1,delta2);
705 dhelix1.Evaluate(phase[0][0],fXr);
706 dhelix1.GetMomentum(phase[0][0],fPdr);
707 mhelix.GetMomentum(phase[0][1],fPm);
708 dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],fAngle);
709 fRr = TMath::Sqrt(radius[0]);
712 dhelix1.Evaluate(phase[1][0],fXr);
713 dhelix1.GetMomentum(phase[1][0], fPdr);
714 mhelix.GetMomentum(phase[1][1], fPm);
715 dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],fAngle);
716 fRr = TMath::Sqrt(radius[1]);
718 fDist1 = TMath::Sqrt(distance1);
719 fDist2 = TMath::Sqrt(distance2);
722 Double_t x,alpha,param[5],cov[15];
724 fT1.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
725 fT1.GetESDtrack()->GetInnerExternalCovariance(cov);
726 AliExternalTrackParam paramm(x,alpha,param,cov);
728 fT2.GetESDtrack()->GetInnerExternalParameters(alpha,x,param);
729 fT2.GetESDtrack()->GetInnerExternalCovariance(cov);
730 AliExternalTrackParam paramd(x,alpha,param,cov);
733 kink.Update(¶mm,¶md);
735 Double_t diff = kink.fRr-fRr;
736 Double_t diff2 = kink.fDist2-fDist2;
737 printf("Diff\t%f\t%f\n",diff,diff2);