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cd90f0a2 1/**************************************************************************\r
2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *\r
3 * *\r
4 * Author: The ALICE Off-line Project. *\r
5 * Contributors are mentioned in the code where appropriate. *\r
6 * *\r
7 * Permission to use, copy, modify and distribute this software and its *\r
8 * documentation strictly for non-commercial purposes is hereby granted *\r
9 * without fee, provided that the above copyright notice appears in all *\r
10 * copies and that both the copyright notice and this permission notice *\r
11 * appear in the supporting documentation. The authors make no claims *\r
12 * about the suitability of this software for any purpose. It is *\r
13 * provided "as is" without express or implied warranty. *\r
14 **************************************************************************/\r
15/* $Id$ */\r
16\r
17//-------------------------------------------------------------------------\r
18// Implementation of the on-the-fly v0 finder for ITS tracker MI\r
19// Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch \r
20// Extraction from AliITStrackerMI: Andrea Dainese\r
21// Current support and development: \r
22//-------------------------------------------------------------------------\r
23\r
24#include <TMatrixD.h>\r
25#include <TTree.h>\r
26#include <TString.h>\r
27#include <TRandom.h>\r
28#include <TTreeStream.h>\r
29\r
30\r
31#include "AliLog.h"\r
32#include "AliESDVertex.h"\r
33#include "AliESDEvent.h"\r
34#include "AliESDtrack.h"\r
35#include "AliV0.h"\r
36#include "AliHelix.h"\r
37#include "AliITSRecPoint.h"\r
38#include "AliITSReconstructor.h"\r
39#include "AliITStrackerMI.h"\r
40#include "AliITSV0Finder.h"\r
41\r
42ClassImp(AliITSV0Finder)\r
43\r
44AliITSV0Finder::AliITSV0Finder() {\r
45 //Default constructor\r
46}\r
47//------------------------------------------------------------------------\r
48void AliITSV0Finder::UpdateTPCV0(const AliESDEvent *event,\r
49 AliITStrackerMI *tracker)\r
50{\r
51 //\r
52 //try to update, or reject TPC V0s\r
53 //\r
54 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
55\r
56 Int_t nv0s = event->GetNumberOfV0s();\r
57 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
58\r
59 for (Int_t i=0;i<nv0s;i++){\r
60 AliESDv0 * vertex = event->GetV0(i);\r
61 Int_t ip = vertex->GetIndex(0);\r
62 Int_t im = vertex->GetIndex(1);\r
63 //\r
64 TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)trackHypothesys->At(ip):0;\r
65 TObjArray * arraym = (im<nitstracks) ? (TObjArray*)trackHypothesys->At(im):0;\r
66 AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;\r
67 AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;\r
68 //\r
69 //\r
70 if (trackp){\r
71 if (trackp->GetNumberOfClusters()+trackp->GetNDeadZone()>5.5){\r
72 if (trackp->GetConstrain()&&trackp->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
73 if (!trackp->GetConstrain()&&trackp->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
74 }\r
75 }\r
76\r
77 if (trackm){\r
78 if (trackm->GetNumberOfClusters()+trackm->GetNDeadZone()>5.5){\r
79 if (trackm->GetConstrain()&&trackm->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
80 if (!trackm->GetConstrain()&&trackm->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
81 }\r
82 }\r
83 if (vertex->GetStatus()==-100) continue;\r
84 //\r
85 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
86 Int_t clayer = tracker->GetNearestLayer(xrp); //I.B.\r
87 vertex->SetNBefore(clayer); //\r
88 vertex->SetChi2Before(9*clayer); //\r
89 vertex->SetNAfter(6-clayer); //\r
90 vertex->SetChi2After(0); //\r
91 //\r
92 if (clayer >1 ){ // calculate chi2 before vertex\r
93 Float_t chi2p = 0, chi2m=0; \r
94 //\r
95 if (trackp){\r
96 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
97 if (trackp->GetClIndex(ilayer)>=0){\r
98 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
99 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
100 }\r
101 else{\r
102 chi2p+=9;\r
103 }\r
104 }\r
105 }else{\r
106 chi2p = 9*clayer;\r
107 }\r
108 //\r
109 if (trackm){\r
110 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
111 if (trackm->GetClIndex(ilayer)>=0){\r
112 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
113 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
114 }\r
115 else{\r
116 chi2m+=9;\r
117 }\r
118 }\r
119 }else{\r
120 chi2m = 9*clayer;\r
121 }\r
122 vertex->SetChi2Before(TMath::Min(chi2p,chi2m));\r
123 if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex\r
124 }\r
125 \r
126 if (clayer < 5 ){ // calculate chi2 after vertex\r
127 Float_t chi2p = 0, chi2m=0; \r
128 //\r
129 if (trackp&&TMath::Abs(trackp->GetTgl())<1.){\r
130 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
131 if (trackp->GetClIndex(ilayer)>=0){\r
132 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
133 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
134 }\r
135 else{\r
136 chi2p+=9;\r
137 }\r
138 }\r
139 }else{\r
140 chi2p = 0;\r
141 }\r
142 //\r
143 if (trackm&&TMath::Abs(trackm->GetTgl())<1.){\r
144 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
145 if (trackm->GetClIndex(ilayer)>=0){\r
146 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
147 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
148 }\r
149 else{\r
150 chi2m+=9;\r
151 }\r
152 }\r
153 }else{\r
154 chi2m = 0;\r
155 }\r
156 vertex->SetChi2After(TMath::Max(chi2p,chi2m));\r
157 if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS\r
158 }\r
159 }\r
160 //\r
161}\r
162//------------------------------------------------------------------------\r
163void AliITSV0Finder::FindV02(AliESDEvent *event,\r
164 AliITStrackerMI *tracker) \r
165{\r
166 //\r
167 // V0 finder\r
168 //\r
169 // Cuts on DCA - R dependent\r
170 // max distance DCA between 2 tracks cut \r
171 // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);\r
172 //\r
173 const Float_t kMaxDist0 = 0.1; \r
174 const Float_t kMaxDist1 = 0.1; \r
175 const Float_t kMaxDist = 1;\r
176 const Float_t kMinPointAngle = 0.85;\r
177 const Float_t kMinPointAngle2 = 0.99;\r
178 const Float_t kMinR = 0.5;\r
179 const Float_t kMaxR = 220;\r
180 //const Float_t kCausality0Cut = 0.19;\r
181 //const Float_t kLikelihood01Cut = 0.25;\r
182 //const Float_t kPointAngleCut = 0.9996;\r
183 const Float_t kCausality0Cut = 0.19;\r
184 const Float_t kLikelihood01Cut = 0.45;\r
185 const Float_t kLikelihood1Cut = 0.5;\r
186 const Float_t kCombinedCut = 0.55;\r
187\r
188 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
189 TObjArray *bestHypothesys = tracker->GetBestHypothesys();\r
190 TObjArray *originalTracks = tracker->GetOriginal();\r
191 //\r
192 //\r
193 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
194 Int_t ntracks = event->GetNumberOfTracks(); \r
195 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
196 originalTracks->Expand(ntracks);\r
197 trackHypothesys->Expand(ntracks);\r
198 bestHypothesys->Expand(ntracks);\r
199 //\r
200 AliHelix * helixes = new AliHelix[ntracks+2];\r
201 TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain\r
202 TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain\r
203 TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain\r
204 Bool_t * forbidden = new Bool_t [ntracks+2];\r
205 Int_t *itsmap = new Int_t [ntracks+2];\r
206 Float_t *dist = new Float_t[ntracks+2];\r
207 Float_t *normdist0 = new Float_t[ntracks+2];\r
208 Float_t *normdist1 = new Float_t[ntracks+2];\r
209 Float_t *normdist = new Float_t[ntracks+2];\r
210 Float_t *norm = new Float_t[ntracks+2];\r
211 Float_t *maxr = new Float_t[ntracks+2];\r
212 Float_t *minr = new Float_t[ntracks+2];\r
213 Float_t *minPointAngle= new Float_t[ntracks+2];\r
214 //\r
215 AliV0 *pvertex = new AliV0;\r
216 AliITStrackMI * dummy= new AliITStrackMI;\r
217 dummy->SetLabel(0);\r
218 AliITStrackMI trackat0; //temporary track for DCA calculation\r
219 //\r
220 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
221 //\r
222 // make ITS - ESD map\r
223 //\r
224 for (Int_t itrack=0;itrack<ntracks+2;itrack++) {\r
225 itsmap[itrack] = -1;\r
226 forbidden[itrack] = kFALSE;\r
227 maxr[itrack] = kMaxR;\r
228 minr[itrack] = kMinR;\r
229 minPointAngle[itrack] = kMinPointAngle;\r
230 }\r
231 for (Int_t itrack=0;itrack<nitstracks;itrack++){\r
232 AliITStrackMI * original = (AliITStrackMI*)(originalTracks->At(itrack));\r
233 Int_t esdindex = original->GetESDtrack()->GetID();\r
234 itsmap[esdindex] = itrack;\r
235 }\r
236 //\r
237 // create ITS tracks from ESD tracks if not done before\r
238 //\r
239 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
240 if (itsmap[itrack]>=0) continue;\r
241 AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));\r
242 //tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());\r
243 //tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ(); \r
244 tpctrack->GetDZ(tracker->GetX(),tracker->GetY(),tracker->GetZ(),tpctrack->GetDP()); //I.B.\r
245 if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){\r
246 // tracks which can reach inner part of ITS\r
247 // propagate track to outer its volume - with correction for material\r
248 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(tpctrack); \r
249 }\r
250 itsmap[itrack] = nitstracks;\r
251 originalTracks->AddAt(tpctrack,nitstracks);\r
252 nitstracks++;\r
253 }\r
254 //\r
255 // fill temporary arrays\r
256 //\r
257 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
258 AliESDtrack * esdtrack = event->GetTrack(itrack);\r
259 Int_t itsindex = itsmap[itrack];\r
260 AliITStrackMI *original = (AliITStrackMI*)originalTracks->At(itsmap[itrack]);\r
261 if (!original) continue;\r
262 AliITStrackMI *bestConst = 0;\r
263 AliITStrackMI *bestLong = 0;\r
264 AliITStrackMI *best = 0; \r
265 //\r
266 //\r
267 TObjArray * array = (TObjArray*) trackHypothesys->At(itsindex);\r
268 Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();\r
269 // Get best track with vertex constrain\r
270 for (Int_t ih=0;ih<hentries;ih++){\r
271 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
272 if (!trackh->GetConstrain()) continue;\r
273 if (!bestConst) bestConst = trackh;\r
274 if (trackh->GetNumberOfClusters()>5.0){\r
275 bestConst = trackh; // full track - with minimal chi2\r
276 break;\r
277 }\r
278 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()) continue; \r
279 bestConst = trackh;\r
280 break;\r
281 }\r
282 // Get best long track without vertex constrain and best track without vertex constrain\r
283 for (Int_t ih=0;ih<hentries;ih++){\r
284 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
285 if (trackh->GetConstrain()) continue;\r
286 if (!best) best = trackh;\r
287 if (!bestLong) bestLong = trackh;\r
288 if (trackh->GetNumberOfClusters()>5.0){\r
289 bestLong = trackh; // full track - with minimal chi2\r
290 break;\r
291 }\r
292 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()) continue; \r
293 bestLong = trackh; \r
294 }\r
295 if (!best) {\r
296 best = original;\r
297 bestLong = original;\r
298 }\r
299 //I.B. trackat0 = *bestLong;\r
300 new (&trackat0) AliITStrackMI(*bestLong);\r
301 Double_t xx,yy,zz,alpha; \r
302 if (!bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz)) continue;\r
303 alpha = TMath::ATan2(yy,xx); \r
304 // if (!trackat0.Propagate(alpha,0)) continue; \r
305 trackat0.Propagate(alpha,0); //PH The check on the return value is temporarily disabled (bug 45751) \r
306 // calculate normalized distances to the vertex \r
307 //\r
308 Float_t ptfac = (1.+100.*TMath::Abs(trackat0.GetC()));\r
309 if ( bestLong->GetNumberOfClusters()>3 ){ \r
310 dist[itsindex] = trackat0.GetY();\r
311 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
312 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
313 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
314 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
315 if (!bestConst){\r
316 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<6) normdist[itsindex]*=2.;\r
317 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<5) normdist[itsindex]*=2.;\r
318 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<4) normdist[itsindex]*=2.;\r
319 }else{\r
320 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<6) normdist[itsindex]*=1.5;\r
321 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<5) normdist[itsindex]*=1.5;\r
322 }\r
323 }\r
324 else{ \r
325 if (bestConst&&bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5){\r
326 dist[itsindex] = bestConst->GetD(0);\r
327 norm[itsindex] = bestConst->GetDnorm(0);\r
328 normdist0[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
329 normdist1[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
330 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
331 }else{\r
332 dist[itsindex] = trackat0.GetY();\r
333 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
334 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
335 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
336 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
337 if (TMath::Abs(trackat0.GetTgl())>1.05){\r
338 if (normdist[itsindex]<3) forbidden[itsindex]=kTRUE;\r
339 if (normdist[itsindex]>3) {\r
340 minr[itsindex] = TMath::Max(Float_t(40.),minr[itsindex]);\r
341 }\r
342 }\r
343 }\r
344 }\r
345 //\r
346 //-----------------------------------------------------------\r
347 //Forbid primary track candidates - \r
348 //\r
349 //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");\r
350 //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");\r
351 //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");\r
352 //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");\r
353 //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");\r
354 //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");\r
355 //-----------------------------------------------------------\r
356 if (bestConst){\r
357 if (bestLong->GetNumberOfClusters()<4 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5) forbidden[itsindex]=kTRUE;\r
358 if (normdist[itsindex]<3 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>5.5) forbidden[itsindex]=kTRUE;\r
359 if (normdist[itsindex]<2 && bestConst->GetClIndex(0)>=0 && bestConst->GetClIndex(1)>=0 ) forbidden[itsindex]=kTRUE;\r
360 if (normdist[itsindex]<1 && bestConst->GetClIndex(0)>=0) forbidden[itsindex]=kTRUE;\r
361 if (normdist[itsindex]<4 && bestConst->GetNormChi2(0)<2) forbidden[itsindex]=kTRUE;\r
362 if (normdist[itsindex]<5 && bestConst->GetNormChi2(0)<1) forbidden[itsindex]=kTRUE; \r
363 if (bestConst->GetNormChi2(0)<2.5) {\r
364 minPointAngle[itsindex]= 0.9999;\r
365 maxr[itsindex] = 10;\r
366 }\r
367 }\r
368 //\r
369 //forbid daughter kink candidates\r
370 //\r
371 if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;\r
372 Bool_t isElectron = kTRUE;\r
373 Bool_t isProton = kTRUE;\r
374 Double_t pid[5];\r
375 esdtrack->GetESDpid(pid);\r
376 for (Int_t i=1;i<5;i++){\r
377 if (pid[0]<pid[i]) isElectron= kFALSE;\r
378 if (pid[4]<pid[i]) isProton= kFALSE;\r
379 }\r
380 if (isElectron){\r
381 forbidden[itsindex]=kFALSE; \r
382 normdist[itsindex]*=-1;\r
383 }\r
384 if (isProton){\r
385 if (normdist[itsindex]>2) forbidden[itsindex]=kFALSE; \r
386 normdist[itsindex]*=-1;\r
387 }\r
388\r
389 //\r
390 // Causality cuts in TPC volume\r
391 //\r
392 if (esdtrack->GetTPCdensity(0,10) >0.6) maxr[itsindex] = TMath::Min(Float_t(110),maxr[itsindex]);\r
393 if (esdtrack->GetTPCdensity(10,30)>0.6) maxr[itsindex] = TMath::Min(Float_t(120),maxr[itsindex]);\r
394 if (esdtrack->GetTPCdensity(20,40)>0.6) maxr[itsindex] = TMath::Min(Float_t(130),maxr[itsindex]);\r
395 if (esdtrack->GetTPCdensity(30,50)>0.6) maxr[itsindex] = TMath::Min(Float_t(140),maxr[itsindex]);\r
396 //\r
397 if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->GetNumberOfClusters()<3) minr[itsindex]=100; \r
398 //\r
399 //\r
400 if (kFALSE){\r
401 cstream<<"Track"<<\r
402 "Tr0.="<<best<<\r
403 "Tr1.="<<((bestConst)? bestConst:dummy)<<\r
404 "Tr2.="<<bestLong<<\r
405 "Tr3.="<<&trackat0<<\r
406 "Esd.="<<esdtrack<<\r
407 "Dist="<<dist[itsindex]<<\r
408 "ND0="<<normdist0[itsindex]<<\r
409 "ND1="<<normdist1[itsindex]<<\r
410 "ND="<<normdist[itsindex]<<\r
411 "Pz="<<primvertex[2]<<\r
412 "Forbid="<<forbidden[itsindex]<<\r
413 "\n";\r
414 //\r
415 }\r
416 trackarray.AddAt(best,itsindex);\r
417 trackarrayc.AddAt(bestConst,itsindex);\r
418 trackarrayl.AddAt(bestLong,itsindex);\r
419 new (&helixes[itsindex]) AliHelix(*best);\r
420 }\r
421 //\r
422 //\r
423 //\r
424 // first iterration of V0 finder\r
425 //\r
426 for (Int_t iesd0=0;iesd0<ntracks;iesd0++){\r
427 Int_t itrack0 = itsmap[iesd0];\r
428 if (forbidden[itrack0]) continue;\r
429 AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);\r
430 if (!btrack0) continue; \r
431 if (btrack0->GetSign()>0 && !AliITSReconstructor::GetRecoParam()->GetStoreLikeSignV0s()) continue;\r
432 AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);\r
433 //\r
434 for (Int_t iesd1=iesd0+1;iesd1<ntracks;iesd1++){\r
435 Int_t itrack1 = itsmap[iesd1];\r
436 if (forbidden[itrack1]) continue;\r
437\r
438 AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1); \r
439 if (!btrack1) continue;\r
440 if (btrack1->GetSign()<0 && !AliITSReconstructor::GetRecoParam()->GetStoreLikeSignV0s()) continue;\r
441 Bool_t isGold = kFALSE;\r
442 if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){\r
443 isGold = kTRUE;\r
444 }\r
445 AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);\r
446 AliHelix &h1 = helixes[itrack0];\r
447 AliHelix &h2 = helixes[itrack1];\r
448 //\r
449 // find linear distance\r
450 Double_t rmin =0;\r
451 //\r
452 //\r
453 //\r
454 Double_t phase[2][2],radius[2];\r
455 Int_t points = h1.GetRPHIintersections(h2, phase, radius);\r
456 if (points==0) continue;\r
457 Double_t delta[2]={1000000,1000000}; \r
458 rmin = radius[0];\r
459 h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);\r
460 if (points==2){ \r
461 if (radius[1]<rmin) rmin = radius[1];\r
462 h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);\r
463 }\r
464 rmin = TMath::Sqrt(rmin);\r
465 Double_t distance = 0;\r
466 Double_t radiusC = 0;\r
467 Int_t iphase = 0;\r
468 if (points==1 || delta[0]<delta[1]){\r
469 distance = TMath::Sqrt(delta[0]);\r
470 radiusC = TMath::Sqrt(radius[0]);\r
471 }else{\r
472 distance = TMath::Sqrt(delta[1]);\r
473 radiusC = TMath::Sqrt(radius[1]);\r
474 iphase=1;\r
475 }\r
476 if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])) continue;\r
477 if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])) continue; \r
478 Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1)); \r
479 if (distance>maxDist) continue;\r
480 Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);\r
481 if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) continue;\r
482 //\r
483 //\r
484 // Double_t distance = TestV0(h1,h2,pvertex,rmin);\r
485 //\r
486 // if (distance>maxDist) continue;\r
487 // if (pvertex->GetRr()<kMinR) continue;\r
488 // if (pvertex->GetRr()>kMaxR) continue;\r
489 AliITStrackMI * track0=btrack0;\r
490 AliITStrackMI * track1=btrack1;\r
491 // if (pvertex->GetRr()<3.5){ \r
492 if (radiusC<3.5){ \r
493 //use longest tracks inside the pipe\r
494 track0 = (AliITStrackMI*)trackarrayl.At(itrack0);\r
495 track1 = (AliITStrackMI*)trackarrayl.At(itrack1);\r
496 } \r
497 //\r
498 //\r
499 pvertex->SetParamN(*track0);\r
500 pvertex->SetParamP(*track1);\r
501 pvertex->Update(primvertex);\r
502 pvertex->SetClusters(track0->ClIndex(),track1->ClIndex()); // register clusters\r
503\r
504 if (pvertex->GetRr()<kMinR) continue;\r
505 if (pvertex->GetRr()>kMaxR) continue;\r
506 if (pvertex->GetV0CosineOfPointingAngle()<kMinPointAngle) continue;\r
507//Bo: if (pvertex->GetDist2()>maxDist) continue;\r
508 if (pvertex->GetDcaV0Daughters()>maxDist) continue;\r
509//Bo: pvertex->SetLab(0,track0->GetLabel());\r
510//Bo: pvertex->SetLab(1,track1->GetLabel());\r
511 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
512 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
513 // \r
514 AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy; \r
515 AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;\r
516\r
517 //\r
518 //\r
519 TObjArray * array0b = (TObjArray*)bestHypothesys->At(itrack0);\r
520 if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<1.1) {\r
521 tracker->SetCurrentEsdTrack(itrack0);\r
522 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack0),itrack0, kFALSE);\r
523 }\r
524 TObjArray * array1b = (TObjArray*)bestHypothesys->At(itrack1);\r
525 if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<1.1) { \r
526 tracker->SetCurrentEsdTrack(itrack1);\r
527 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack1),itrack1, kFALSE);\r
528 }\r
529 //\r
530 AliITStrackMI * track0b = (AliITStrackMI*)originalTracks->At(itrack0);\r
531 AliITStrackMI * track1b = (AliITStrackMI*)originalTracks->At(itrack1);\r
532 AliITStrackMI * track0l = (AliITStrackMI*)originalTracks->At(itrack0);\r
533 AliITStrackMI * track1l = (AliITStrackMI*)originalTracks->At(itrack1);\r
534 \r
535 Float_t minchi2before0=16;\r
536 Float_t minchi2before1=16;\r
537 Float_t minchi2after0 =16;\r
538 Float_t minchi2after1 =16;\r
539 Double_t xrp[3]; pvertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
540 Int_t maxLayer = tracker->GetNearestLayer(xrp); //I.B.\r
541 \r
542 if (array0b) for (Int_t i=0;i<5;i++){\r
543 // best track after vertex\r
544 AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);\r
545 if (!btrack) continue;\r
546 if (btrack->GetNumberOfClusters()>track0l->GetNumberOfClusters()) track0l = btrack; \r
547 // if (btrack->fX<pvertex->GetRr()-2.-0.5/(0.1+pvertex->GetAnglep()[2])) {\r
548 if (btrack->GetX()<pvertex->GetRr()-2.) {\r
549 if ( (maxLayer>i+2|| (i==0)) && btrack->GetNumberOfClusters()==(6-i)&&i<3){\r
550 Float_t sumchi2= 0;\r
551 Float_t sumn = 0;\r
552 if (maxLayer<3){ // take prim vertex as additional measurement\r
553 if (normdist[itrack0]>0 && htrackc0){\r
554 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack0]*normdist[itrack0],16.);\r
555 }else{\r
556 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack0]*normdist[itrack0]+3.),16.);\r
557 }\r
558 sumn += 3-maxLayer;\r
559 }\r
560 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
561 sumn+=1.; \r
562 if (btrack->GetClIndex(ilayer)<0){\r
563 sumchi2+=25;\r
564 continue;\r
565 }else{\r
566 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
567 for (Int_t itrack=0;itrack<4;itrack++){\r
568 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
569 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack0){\r
570 sumchi2+=18.; //shared cluster\r
571 break;\r
572 }\r
573 }\r
574 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
575 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
576 }\r
577 }\r
578 sumchi2/=sumn;\r
579 if (sumchi2<minchi2before0) minchi2before0=sumchi2; \r
580 }\r
581 continue; //safety space - Geo manager will give exact layer\r
582 }\r
583 track0b = btrack;\r
584 minchi2after0 = btrack->GetNormChi2(i);\r
585 break;\r
586 }\r
587 if (array1b) for (Int_t i=0;i<5;i++){\r
588 // best track after vertex\r
589 AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);\r
590 if (!btrack) continue;\r
591 if (btrack->GetNumberOfClusters()>track1l->GetNumberOfClusters()) track1l = btrack; \r
592 // if (btrack->fX<pvertex->GetRr()-2-0.5/(0.1+pvertex->GetAnglep()[2])){\r
593 if (btrack->GetX()<pvertex->GetRr()-2){\r
594 if ((maxLayer>i+2 || (i==0))&&btrack->GetNumberOfClusters()==(6-i)&&(i<3)){\r
595 Float_t sumchi2= 0;\r
596 Float_t sumn = 0;\r
597 if (maxLayer<3){ // take prim vertex as additional measurement\r
598 if (normdist[itrack1]>0 && htrackc1){\r
599 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack1]*normdist[itrack1],16.);\r
600 }else{\r
601 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack1]*normdist[itrack1]+3.),16.);\r
602 }\r
603 sumn += 3-maxLayer;\r
604 }\r
605 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
606 sumn+=1.;\r
607 if (btrack->GetClIndex(ilayer)<0){\r
608 sumchi2+=30;\r
609 continue;\r
610 }else{\r
611 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
612 for (Int_t itrack=0;itrack<4;itrack++){\r
613 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
614 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack1){\r
615 sumchi2+=18.; //shared cluster\r
616 break;\r
617 }\r
618 }\r
619 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
620 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
621 }\r
622 }\r
623 sumchi2/=sumn;\r
624 if (sumchi2<minchi2before1) minchi2before1=sumchi2; \r
625 }\r
626 continue; //safety space - Geo manager will give exact layer \r
627 }\r
628 track1b = btrack;\r
629 minchi2after1 = btrack->GetNormChi2(i);\r
630 break;\r
631 }\r
632 //\r
633 // position resolution - used for DCA cut\r
634 Float_t sigmad = track0b->GetSigmaY2()+track0b->GetSigmaZ2()+track1b->GetSigmaY2()+track1b->GetSigmaZ2()+\r
635 (track0b->GetX()-pvertex->GetRr())*(track0b->GetX()-pvertex->GetRr())*(track0b->GetSigmaSnp2()+track0b->GetSigmaTgl2())+\r
636 (track1b->GetX()-pvertex->GetRr())*(track1b->GetX()-pvertex->GetRr())*(track1b->GetSigmaSnp2()+track1b->GetSigmaTgl2());\r
637 sigmad =TMath::Sqrt(sigmad)+0.04;\r
638 if (pvertex->GetRr()>50){\r
639 Double_t cov0[15],cov1[15];\r
640 track0b->GetESDtrack()->GetInnerExternalCovariance(cov0);\r
641 track1b->GetESDtrack()->GetInnerExternalCovariance(cov1);\r
642 sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+\r
643 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+\r
644 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);\r
645 sigmad =TMath::Sqrt(sigmad)+0.05;\r
646 }\r
647 // \r
648 AliV0 vertex2;\r
649 vertex2.SetParamN(*track0b);\r
650 vertex2.SetParamP(*track1b);\r
651 vertex2.Update(primvertex);\r
652 //Bo: if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
653 if (vertex2.GetDcaV0Daughters()<=pvertex->GetDcaV0Daughters()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
654 pvertex->SetParamN(*track0b);\r
655 pvertex->SetParamP(*track1b);\r
656 pvertex->Update(primvertex);\r
657 pvertex->SetClusters(track0b->ClIndex(),track1b->ClIndex()); // register clusters\r
658 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
659 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
660 }\r
661 pvertex->SetDistSigma(sigmad);\r
662 //Bo: pvertex->SetDistNorm(pvertex->GetDist2()/sigmad); \r
663 pvertex->SetNormDCAPrim(normdist[itrack0],normdist[itrack1]);\r
664 //\r
665 // define likelihhod and causalities\r
666 //\r
667 Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26; \r
668 if (maxLayer<1){\r
669 Float_t fnorm0 = normdist[itrack0];\r
670 if (fnorm0<0) fnorm0*=-3;\r
671 Float_t fnorm1 = normdist[itrack1];\r
672 if (fnorm1<0) fnorm1*=-3;\r
673 if ((pvertex->GetAnglep()[2]>0.1) || ( (pvertex->GetRr()<10.5)&& pvertex->GetAnglep()[2]>0.05 ) || (pvertex->GetRr()<3)){\r
674 pb0 = TMath::Exp(-TMath::Min(fnorm0,Float_t(16.))/12.);\r
675 pb1 = TMath::Exp(-TMath::Min(fnorm1,Float_t(16.))/12.);\r
676 }\r
677 pvertex->SetChi2Before(normdist[itrack0]);\r
678 pvertex->SetChi2After(normdist[itrack1]); \r
679 pvertex->SetNAfter(0);\r
680 pvertex->SetNBefore(0);\r
681 }else{\r
682 pvertex->SetChi2Before(minchi2before0);\r
683 pvertex->SetChi2After(minchi2before1);\r
684 if (pvertex->GetAnglep()[2]>0.1 || ( pvertex->GetRr()<10.5 && pvertex->GetAnglep()[2]>0.05) || pvertex->GetRr()<3){\r
685 pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);\r
686 pb1 = TMath::Exp(-TMath::Min(minchi2before1,Float_t(16))/12.);\r
687 }\r
688 pvertex->SetNAfter(maxLayer);\r
689 pvertex->SetNBefore(maxLayer); \r
690 }\r
691 if (pvertex->GetRr()<90){\r
692 pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
693 pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
694 }\r
695 if (pvertex->GetRr()<20){\r
696 pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;\r
697 pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;\r
698 }\r
699 //\r
700 pvertex->SetCausality(pb0,pb1,pa0,pa1);\r
701 //\r
702 // Likelihood calculations - apply cuts\r
703 // \r
704 Bool_t v0OK = kTRUE;\r
705 Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];\r
706 p12 += pvertex->GetParamN()->GetParameter()[4]*pvertex->GetParamN()->GetParameter()[4];\r
707 p12 = TMath::Sqrt(p12); // "mean" momenta\r
708 Float_t sigmap0 = 0.0001+0.001/(0.1+pvertex->GetRr()); \r
709 Float_t sigmap = 0.5*sigmap0*(0.6+0.4*p12); // "resolution: of point angle - as a function of radius and momenta\r
710\r
711 Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);\r
712 Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*\r
713 TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));\r
714 //\r
715 //Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);\r
716 Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();\r
717 Float_t likelihood0 = (TMath::Exp(-lDistNorm)+0.1) *(pvertex->GetDcaV0Daughters()<0.5)*(lDistNorm<5);\r
718\r
719 Float_t likelihood1 = TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/sigmap)+\r
720 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(4.*sigmap))+\r
721 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(8.*sigmap))+\r
722 0.1*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/0.01);\r
723 //\r
724 if (causalityA<kCausality0Cut) v0OK = kFALSE;\r
725 if (TMath::Sqrt(likelihood0*likelihood1)<kLikelihood01Cut) v0OK = kFALSE;\r
726 if (likelihood1<kLikelihood1Cut) v0OK = kFALSE;\r
727 if (TMath::Power(likelihood0*likelihood1*causalityB,0.33)<kCombinedCut) v0OK = kFALSE;\r
728 \r
729 //\r
730 //\r
731 if (kFALSE){ \r
732 Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;\r
733 cstream<<"It0"<<\r
734 "Tr0.="<<track0<< //best without constrain\r
735 "Tr1.="<<track1<< //best without constrain \r
736 "Tr0B.="<<track0b<< //best without constrain after vertex\r
737 "Tr1B.="<<track1b<< //best without constrain after vertex \r
738 "Tr0C.="<<htrackc0<< //best with constrain if exist\r
739 "Tr1C.="<<htrackc1<< //best with constrain if exist\r
740 "Tr0L.="<<track0l<< //longest best \r
741 "Tr1L.="<<track1l<< //longest best\r
742 "Esd0.="<<track0->GetESDtrack()<< // esd track0 params\r
743 "Esd1.="<<track1->GetESDtrack()<< // esd track1 params\r
744 "V0.="<<pvertex<< //vertex properties\r
745 "V0b.="<<&vertex2<< //vertex properties at "best" track\r
746 "ND0="<<normdist[itrack0]<< //normalize distance for track0\r
747 "ND1="<<normdist[itrack1]<< //normalize distance for track1\r
748 "Gold="<<gold<< //\r
749 // "RejectBase="<<rejectBase<< //rejection in First itteration\r
750 "OK="<<v0OK<<\r
751 "rmin="<<rmin<<\r
752 "sigmad="<<sigmad<<\r
753 "\n";\r
754 } \r
755 //if (rejectBase) continue;\r
756 //\r
757 pvertex->SetStatus(0);\r
758 // if (rejectBase) {\r
759 // pvertex->SetStatus(-100);\r
760 //}\r
761 if (pvertex->GetV0CosineOfPointingAngle()>kMinPointAngle2) {\r
762 //Bo: pvertex->SetESDindexes(track0->GetESDtrack()->GetID(),track1->GetESDtrack()->GetID());\r
763 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());//Bo: consistency 0 for neg\r
764 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());//Bo: consistency 1 for pos\r
765 if (v0OK){\r
766 // AliV0vertex vertexjuri(*track0,*track1);\r
767 // vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());\r
768 // event->AddV0(&vertexjuri);\r
769 pvertex->SetStatus(100);\r
770 }\r
771 pvertex->SetOnFlyStatus(kTRUE);\r
772 pvertex->ChangeMassHypothesis(kK0Short);\r
773 event->AddV0(pvertex);\r
774 }\r
775 }\r
776 }\r
777 //\r
778 //\r
779 // delete temporary arrays\r
780 // \r
781 delete[] forbidden;\r
782 delete[] minPointAngle;\r
783 delete[] maxr;\r
784 delete[] minr;\r
785 delete[] norm;\r
786 delete[] normdist;\r
787 delete[] normdist1;\r
788 delete[] normdist0;\r
789 delete[] dist;\r
790 delete[] itsmap;\r
791 delete[] helixes;\r
792 delete pvertex;\r
793}\r
794//------------------------------------------------------------------------\r
795void AliITSV0Finder::RefitV02(const AliESDEvent *event,\r
796 AliITStrackerMI *tracker) \r
797{\r
798 //\r
799 //try to refit V0s in the third path of the reconstruction\r
800 //\r
801 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
802 //\r
803 Int_t nv0s = event->GetNumberOfV0s();\r
804 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
805 AliV0 v0temp;\r
806 for (Int_t iv0 = 0; iv0<nv0s;iv0++){\r
807 AliV0 * v0mi = (AliV0*)event->GetV0(iv0);\r
808 if (!v0mi) continue;\r
809 Int_t itrack0 = v0mi->GetIndex(0);\r
810 Int_t itrack1 = v0mi->GetIndex(1);\r
811 AliESDtrack *esd0 = event->GetTrack(itrack0);\r
812 AliESDtrack *esd1 = event->GetTrack(itrack1);\r
813 if (!esd0||!esd1) continue;\r
814 AliITStrackMI tpc0(*esd0); \r
815 AliITStrackMI tpc1(*esd1);\r
816 Double_t x,y,z; v0mi->GetXYZ(x,y,z); //I.B. \r
817 Double_t alpha =TMath::ATan2(y,x); //I.B.\r
818 if (v0mi->GetRr()>85){\r
819 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
820 v0temp.SetParamN(tpc0);\r
821 v0temp.SetParamP(tpc1);\r
822 v0temp.Update(primvertex);\r
823 if (kFALSE) cstream<<"Refit"<<\r
824 "V0.="<<v0mi<<\r
825 "V0refit.="<<&v0temp<<\r
826 "Tr0.="<<&tpc0<<\r
827 "Tr1.="<<&tpc1<<\r
828 "\n";\r
829 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
830 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
831 v0mi->SetParamN(tpc0);\r
832 v0mi->SetParamP(tpc1);\r
833 v0mi->Update(primvertex);\r
834 }\r
835 }\r
836 continue;\r
837 }\r
838 if (v0mi->GetRr()>35){\r
839 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
840 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1);\r
841 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
842 v0temp.SetParamN(tpc0);\r
843 v0temp.SetParamP(tpc1);\r
844 v0temp.Update(primvertex);\r
845 if (kFALSE) cstream<<"Refit"<<\r
846 "V0.="<<v0mi<<\r
847 "V0refit.="<<&v0temp<<\r
848 "Tr0.="<<&tpc0<<\r
849 "Tr1.="<<&tpc1<<\r
850 "\n";\r
851 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
852 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
853 v0mi->SetParamN(tpc0);\r
854 v0mi->SetParamP(tpc1);\r
855 v0mi->Update(primvertex);\r
856 } \r
857 }\r
858 continue;\r
859 }\r
860 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
861 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1); \r
862 // if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
863 if (tracker->RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && \r
864 tracker->RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){\r
865 v0temp.SetParamN(tpc0);\r
866 v0temp.SetParamP(tpc1);\r
867 v0temp.Update(primvertex);\r
868 if (kFALSE) cstream<<"Refit"<<\r
869 "V0.="<<v0mi<<\r
870 "V0refit.="<<&v0temp<<\r
871 "Tr0.="<<&tpc0<<\r
872 "Tr1.="<<&tpc1<<\r
873 "\n";\r
874 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
875 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
876 v0mi->SetParamN(tpc0);\r
877 v0mi->SetParamP(tpc1);\r
878 v0mi->Update(primvertex);\r
879 } \r
880 } \r
881 }\r
882}\r
883//------------------------------------------------------------------------\r