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Bayesian PID: new parametrization and code update (E. Biolcati - F.Prino)
[u/mrichter/AliRoot.git] / ITS / AliITSV0Finder.cxx
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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
767aaecb 41#include "AliKFParticle.h"\r
61673d36 42#include "AliKFVertex.h"\r
cd90f0a2 43\r
44ClassImp(AliITSV0Finder)\r
45\r
767aaecb 46\r
47AliITSV0Finder::AliITSV0Finder():\r
48fDebugStreamer(0)\r
49 {\r
cd90f0a2 50 //Default constructor\r
767aaecb 51\r
52 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");\r
53} \r
54\r
cd90f0a2 55//------------------------------------------------------------------------\r
56void AliITSV0Finder::UpdateTPCV0(const AliESDEvent *event,\r
57 AliITStrackerMI *tracker)\r
58{\r
59 //\r
60 //try to update, or reject TPC V0s\r
61 //\r
767aaecb 62 const Float_t kMinTgl2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl2();\r
63\r
cd90f0a2 64 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
65\r
66 Int_t nv0s = event->GetNumberOfV0s();\r
67 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
68\r
69 for (Int_t i=0;i<nv0s;i++){\r
70 AliESDv0 * vertex = event->GetV0(i);\r
71 Int_t ip = vertex->GetIndex(0);\r
72 Int_t im = vertex->GetIndex(1);\r
73 //\r
74 TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)trackHypothesys->At(ip):0;\r
75 TObjArray * arraym = (im<nitstracks) ? (TObjArray*)trackHypothesys->At(im):0;\r
76 AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;\r
77 AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;\r
78 //\r
79 //\r
80 if (trackp){\r
81 if (trackp->GetNumberOfClusters()+trackp->GetNDeadZone()>5.5){\r
82 if (trackp->GetConstrain()&&trackp->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
83 if (!trackp->GetConstrain()&&trackp->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
84 }\r
85 }\r
86\r
87 if (trackm){\r
88 if (trackm->GetNumberOfClusters()+trackm->GetNDeadZone()>5.5){\r
89 if (trackm->GetConstrain()&&trackm->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
90 if (!trackm->GetConstrain()&&trackm->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
91 }\r
92 }\r
93 if (vertex->GetStatus()==-100) continue;\r
94 //\r
95 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
96 Int_t clayer = tracker->GetNearestLayer(xrp); //I.B.\r
97 vertex->SetNBefore(clayer); //\r
98 vertex->SetChi2Before(9*clayer); //\r
99 vertex->SetNAfter(6-clayer); //\r
100 vertex->SetChi2After(0); //\r
101 //\r
102 if (clayer >1 ){ // calculate chi2 before vertex\r
103 Float_t chi2p = 0, chi2m=0; \r
104 //\r
105 if (trackp){\r
106 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
107 if (trackp->GetClIndex(ilayer)>=0){\r
108 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
109 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
110 }\r
111 else{\r
112 chi2p+=9;\r
113 }\r
114 }\r
115 }else{\r
116 chi2p = 9*clayer;\r
117 }\r
118 //\r
119 if (trackm){\r
120 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
121 if (trackm->GetClIndex(ilayer)>=0){\r
122 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
123 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
124 }\r
125 else{\r
126 chi2m+=9;\r
127 }\r
128 }\r
129 }else{\r
130 chi2m = 9*clayer;\r
131 }\r
132 vertex->SetChi2Before(TMath::Min(chi2p,chi2m));\r
133 if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex\r
134 }\r
135 \r
136 if (clayer < 5 ){ // calculate chi2 after vertex\r
137 Float_t chi2p = 0, chi2m=0; \r
138 //\r
767aaecb 139 if (trackp&&TMath::Abs(trackp->GetTgl())<kMinTgl2){\r
cd90f0a2 140 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
141 if (trackp->GetClIndex(ilayer)>=0){\r
142 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
143 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
144 }\r
145 else{\r
146 chi2p+=9;\r
147 }\r
148 }\r
149 }else{\r
150 chi2p = 0;\r
151 }\r
152 //\r
767aaecb 153 if (trackm&&TMath::Abs(trackm->GetTgl())<kMinTgl2){\r
cd90f0a2 154 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
155 if (trackm->GetClIndex(ilayer)>=0){\r
156 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
157 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
158 }\r
159 else{\r
160 chi2m+=9;\r
161 }\r
162 }\r
163 }else{\r
164 chi2m = 0;\r
165 }\r
166 vertex->SetChi2After(TMath::Max(chi2p,chi2m));\r
167 if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS\r
168 }\r
169 }\r
170 //\r
171}\r
172//------------------------------------------------------------------------\r
173void AliITSV0Finder::FindV02(AliESDEvent *event,\r
174 AliITStrackerMI *tracker) \r
175{\r
176 //\r
177 // V0 finder\r
178 //\r
179 // Cuts on DCA - R dependent\r
180 // max distance DCA between 2 tracks cut \r
181 // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);\r
182 //\r
767aaecb 183 const Float_t kMaxDist0 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist0();\r
184 const Float_t kMaxDist1 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist1();\r
185 const Float_t kMaxDist = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist();\r
186 const Float_t kMinPointAngle = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle();\r
187 const Float_t kMinPointAngle2 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle2();\r
188 const Float_t kMinR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinR();\r
189 const Float_t kMaxR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxR();\r
61673d36 190 const Float_t kMinPABestConst = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPABestConst();\r
191 const Float_t kMaxRBestConst = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRBestConst();\r
767aaecb 192 const Float_t kCausality0Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCausality0Cut();\r
193 const Float_t kLikelihood01Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood01Cut();\r
194 const Float_t kLikelihood1Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood1Cut();\r
195 const Float_t kCombinedCut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCombinedCut();\r
b47f2a3f 196 const Float_t kMinClFullTrk= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinClFullTrk();\r
767aaecb 197 const Float_t kMinTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl0();\r
61673d36 198 const Float_t kMinRTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinRTgl0();\r
199\r
200 const Float_t kMinNormDistForbTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForbTgl0();\r
201 const Float_t kMinClForb0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinClForb0();\r
202 const Float_t kMinNormDistForb1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb1();\r
203 const Float_t kMinNormDistForb2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb2();\r
204 const Float_t kMinNormDistForb3= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb3();\r
205 const Float_t kMinNormDistForb4= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb4();\r
206 const Float_t kMinNormDistForb5= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb5();\r
83052b75 207 const Float_t kMinNormDistForbProt= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForbProt();\r
208 const Float_t kMaxPidProbPionForb= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxPidProbPionForb();\r
61673d36 209\r
210 const Float_t kMinRTPCdensity= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinRTPCdensity();\r
211 const Float_t kMaxRTPCdensity0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity0();\r
212 const Float_t kMaxRTPCdensity10= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity10();\r
213 const Float_t kMaxRTPCdensity20= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity20();\r
214 const Float_t kMaxRTPCdensity30= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity30();\r
215\r
216\r
767aaecb 217 const Float_t kMinTPCdensity= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTPCdensity();\r
218 const Float_t kMinTgl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl1();\r
219\r
220 const Float_t kMinchi2before0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before0();\r
221 const Float_t kMinchi2before1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before1();\r
222 const Float_t kMinchi2after0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after0();\r
223 const Float_t kMinchi2after1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after1();\r
224 const Float_t kAddchi2SharedCl= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2SharedCl();\r
225 const Float_t kAddchi2NegCl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl0();\r
226 const Float_t kAddchi2NegCl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl1();\r
227\r
228 const Float_t kSigp0Par0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par0();\r
229 const Float_t kSigp0Par1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par1();\r
230 const Float_t kSigp0Par2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par2();\r
231\r
232 const Float_t kSigpPar0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar0();\r
233 const Float_t kSigpPar1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar1();\r
234 const Float_t kSigpPar2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar2();\r
61673d36 235 const Float_t kMaxDcaLh0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDcaLh0();\r
236\r
cd90f0a2 237\r
238 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
239 TObjArray *bestHypothesys = tracker->GetBestHypothesys();\r
240 TObjArray *originalTracks = tracker->GetOriginal();\r
241 //\r
242 //\r
243 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
244 Int_t ntracks = event->GetNumberOfTracks(); \r
245 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
246 originalTracks->Expand(ntracks);\r
247 trackHypothesys->Expand(ntracks);\r
248 bestHypothesys->Expand(ntracks);\r
249 //\r
250 AliHelix * helixes = new AliHelix[ntracks+2];\r
251 TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain\r
252 TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain\r
253 TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain\r
61673d36 254 //Change from Bool_t to Int_t for optimization\r
255 // Int_t forbN=0;\r
256 // Int_t * forbidden = new Int_t [ntracks+2];\r
cd90f0a2 257 Bool_t * forbidden = new Bool_t [ntracks+2];\r
258 Int_t *itsmap = new Int_t [ntracks+2];\r
259 Float_t *dist = new Float_t[ntracks+2];\r
260 Float_t *normdist0 = new Float_t[ntracks+2];\r
261 Float_t *normdist1 = new Float_t[ntracks+2];\r
262 Float_t *normdist = new Float_t[ntracks+2];\r
263 Float_t *norm = new Float_t[ntracks+2];\r
264 Float_t *maxr = new Float_t[ntracks+2];\r
265 Float_t *minr = new Float_t[ntracks+2];\r
266 Float_t *minPointAngle= new Float_t[ntracks+2];\r
267 //\r
268 AliV0 *pvertex = new AliV0;\r
269 AliITStrackMI * dummy= new AliITStrackMI;\r
270 dummy->SetLabel(0);\r
271 AliITStrackMI trackat0; //temporary track for DCA calculation\r
272 //\r
273 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
274 //\r
275 // make ITS - ESD map\r
276 //\r
277 for (Int_t itrack=0;itrack<ntracks+2;itrack++) {\r
278 itsmap[itrack] = -1;\r
61673d36 279 // forbidden[itrack] = 0;\r
cd90f0a2 280 forbidden[itrack] = kFALSE;\r
281 maxr[itrack] = kMaxR;\r
282 minr[itrack] = kMinR;\r
283 minPointAngle[itrack] = kMinPointAngle;\r
284 }\r
285 for (Int_t itrack=0;itrack<nitstracks;itrack++){\r
286 AliITStrackMI * original = (AliITStrackMI*)(originalTracks->At(itrack));\r
287 Int_t esdindex = original->GetESDtrack()->GetID();\r
288 itsmap[esdindex] = itrack;\r
289 }\r
290 //\r
291 // create ITS tracks from ESD tracks if not done before\r
292 //\r
293 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
294 if (itsmap[itrack]>=0) continue;\r
295 AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));\r
296 //tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());\r
297 //tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ(); \r
298 tpctrack->GetDZ(tracker->GetX(),tracker->GetY(),tracker->GetZ(),tpctrack->GetDP()); //I.B.\r
299 if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){\r
300 // tracks which can reach inner part of ITS\r
301 // propagate track to outer its volume - with correction for material\r
302 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(tpctrack); \r
303 }\r
304 itsmap[itrack] = nitstracks;\r
305 originalTracks->AddAt(tpctrack,nitstracks);\r
306 nitstracks++;\r
307 }\r
308 //\r
309 // fill temporary arrays\r
310 //\r
311 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
312 AliESDtrack * esdtrack = event->GetTrack(itrack);\r
313 Int_t itsindex = itsmap[itrack];\r
314 AliITStrackMI *original = (AliITStrackMI*)originalTracks->At(itsmap[itrack]);\r
315 if (!original) continue;\r
316 AliITStrackMI *bestConst = 0;\r
317 AliITStrackMI *bestLong = 0;\r
318 AliITStrackMI *best = 0; \r
319 //\r
320 //\r
321 TObjArray * array = (TObjArray*) trackHypothesys->At(itsindex);\r
322 Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();\r
323 // Get best track with vertex constrain\r
324 for (Int_t ih=0;ih<hentries;ih++){\r
325 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
326 if (!trackh->GetConstrain()) continue;\r
327 if (!bestConst) bestConst = trackh;\r
61673d36 328 if (trackh->GetNumberOfClusters()>kMinClFullTrk ){\r
cd90f0a2 329 bestConst = trackh; // full track - with minimal chi2\r
330 break;\r
331 }\r
332 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()) continue; \r
333 bestConst = trackh;\r
334 break;\r
335 }\r
336 // Get best long track without vertex constrain and best track without vertex constrain\r
337 for (Int_t ih=0;ih<hentries;ih++){\r
338 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
339 if (trackh->GetConstrain()) continue;\r
340 if (!best) best = trackh;\r
341 if (!bestLong) bestLong = trackh;\r
b47f2a3f 342 if (trackh->GetNumberOfClusters()>kMinClFullTrk){\r
cd90f0a2 343 bestLong = trackh; // full track - with minimal chi2\r
344 break;\r
345 }\r
346 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()) continue; \r
347 bestLong = trackh; \r
348 }\r
349 if (!best) {\r
350 best = original;\r
351 bestLong = original;\r
352 }\r
353 //I.B. trackat0 = *bestLong;\r
354 new (&trackat0) AliITStrackMI(*bestLong);\r
355 Double_t xx,yy,zz,alpha; \r
356 if (!bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz)) continue;\r
61673d36 357 \r
358\r
cd90f0a2 359 alpha = TMath::ATan2(yy,xx); \r
360 // if (!trackat0.Propagate(alpha,0)) continue; \r
361 trackat0.Propagate(alpha,0); //PH The check on the return value is temporarily disabled (bug 45751) \r
362 // calculate normalized distances to the vertex \r
363 //\r
364 Float_t ptfac = (1.+100.*TMath::Abs(trackat0.GetC()));\r
365 if ( bestLong->GetNumberOfClusters()>3 ){ \r
366 dist[itsindex] = trackat0.GetY();\r
367 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
368 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
369 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
370 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
371 if (!bestConst){\r
372 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<6) normdist[itsindex]*=2.;\r
373 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<5) normdist[itsindex]*=2.;\r
374 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<4) normdist[itsindex]*=2.;\r
375 }else{\r
376 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<6) normdist[itsindex]*=1.5;\r
377 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<5) normdist[itsindex]*=1.5;\r
378 }\r
379 }\r
380 else{ \r
381 if (bestConst&&bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5){\r
382 dist[itsindex] = bestConst->GetD(0);\r
383 norm[itsindex] = bestConst->GetDnorm(0);\r
384 normdist0[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
385 normdist1[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
386 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
387 }else{\r
388 dist[itsindex] = trackat0.GetY();\r
389 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
390 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
391 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
392 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
767aaecb 393 if (TMath::Abs(trackat0.GetTgl())>kMinTgl0){\r
61673d36 394 if (normdist[itsindex]<kMinNormDistForbTgl0){\r
395 // forbN=1;\r
396 // forbidden[itsindex]+=1<<forbN;\r
397 forbidden[itsindex]=kTRUE;\r
398 }\r
399 if (normdist[itsindex]>kMinNormDistForbTgl0) {\r
400 minr[itsindex] = TMath::Max(kMinRTgl0,minr[itsindex]);\r
cd90f0a2 401 }\r
402 }\r
403 }\r
404 }\r
61673d36 405\r
406\r
cd90f0a2 407 //\r
408 //-----------------------------------------------------------\r
409 //Forbid primary track candidates - \r
410 //\r
411 //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");\r
412 //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");\r
413 //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");\r
414 //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");\r
415 //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");\r
416 //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");\r
417 //-----------------------------------------------------------\r
418 if (bestConst){\r
61673d36 419 if (bestLong->GetNumberOfClusters()<4 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>kMinClForb0){\r
420 // forbN=2;\r
421 // forbidden[itsindex]+=1<<forbN;\r
422 forbidden[itsindex]=kTRUE;\r
423 }\r
424 if (normdist[itsindex]<kMinNormDistForb1 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>5.5){\r
425 // forbN=3;\r
426 // forbidden[itsindex]+=1<<forbN;\r
427 forbidden[itsindex]=kTRUE;\r
428 }\r
429 if (normdist[itsindex]<kMinNormDistForb2 && bestConst->GetClIndex(0)>=0 && bestConst->GetClIndex(1)>=0 ){\r
430 // forbN=4;\r
431 // forbidden[itsindex]+=1<<forbN;\r
432 forbidden[itsindex]=kTRUE;\r
433 }\r
434 if (normdist[itsindex]<kMinNormDistForb3 && bestConst->GetClIndex(0)>=0){\r
435 // forbN=5;\r
436 // forbidden[itsindex]+=1<<forbN;\r
437 forbidden[itsindex]=kTRUE;\r
438 }\r
439 if (normdist[itsindex]<kMinNormDistForb4 && bestConst->GetNormChi2(0)<2){\r
440 // forbN=6;\r
441 // forbidden[itsindex]+=1<<forbN;\r
442 forbidden[itsindex]=kTRUE;\r
443 }\r
444 if (normdist[itsindex]<kMinNormDistForb5 && bestConst->GetNormChi2(0)<1){\r
445 // forbN=7;\r
446 // forbidden[itsindex]+=1<<forbN;\r
447 forbidden[itsindex]=kTRUE;\r
448 }\r
cd90f0a2 449 if (bestConst->GetNormChi2(0)<2.5) {\r
61673d36 450 minPointAngle[itsindex]= kMinPABestConst;\r
451 maxr[itsindex] = kMaxRBestConst;\r
cd90f0a2 452 }\r
453 }\r
454 //\r
455 //forbid daughter kink candidates\r
456 //\r
457 if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;\r
458 Bool_t isElectron = kTRUE;\r
459 Bool_t isProton = kTRUE;\r
460 Double_t pid[5];\r
461 esdtrack->GetESDpid(pid);\r
462 for (Int_t i=1;i<5;i++){\r
463 if (pid[0]<pid[i]) isElectron= kFALSE;\r
464 if (pid[4]<pid[i]) isProton= kFALSE;\r
465 }\r
466 if (isElectron){\r
467 forbidden[itsindex]=kFALSE; \r
468 normdist[itsindex]*=-1;\r
469 }\r
470 if (isProton){\r
83052b75 471 if (normdist[itsindex]>kMinNormDistForbProt) forbidden[itsindex]=kFALSE; \r
cd90f0a2 472 normdist[itsindex]*=-1;\r
473 }\r
474\r
83052b75 475 // We allow all tracks that are not pions\r
476 if( (pid[1]+pid[2])< kMaxPidProbPionForb ){\r
477 forbidden[itsindex]=kFALSE;\r
478 }\r
479\r
cd90f0a2 480 //\r
481 // Causality cuts in TPC volume\r
482 //\r
61673d36 483 if (esdtrack->GetTPCdensity(0,10) >kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity0),maxr[itsindex]);\r
484 if (esdtrack->GetTPCdensity(10,30)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity10),maxr[itsindex]);\r
485 if (esdtrack->GetTPCdensity(20,40)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity20),maxr[itsindex]);\r
486 if (esdtrack->GetTPCdensity(30,50)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity30),maxr[itsindex]);\r
cd90f0a2 487 //\r
61673d36 488 if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->GetNumberOfClusters()<3) minr[itsindex]=kMinRTPCdensity; \r
cd90f0a2 489 //\r
490 //\r
61673d36 491\r
767aaecb 492 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){\r
cd90f0a2 493 cstream<<"Track"<<\r
494 "Tr0.="<<best<<\r
495 "Tr1.="<<((bestConst)? bestConst:dummy)<<\r
496 "Tr2.="<<bestLong<<\r
497 "Tr3.="<<&trackat0<<\r
498 "Esd.="<<esdtrack<<\r
499 "Dist="<<dist[itsindex]<<\r
500 "ND0="<<normdist0[itsindex]<<\r
501 "ND1="<<normdist1[itsindex]<<\r
502 "ND="<<normdist[itsindex]<<\r
503 "Pz="<<primvertex[2]<<\r
504 "Forbid="<<forbidden[itsindex]<<\r
505 "\n";\r
506 //\r
507 }\r
508 trackarray.AddAt(best,itsindex);\r
509 trackarrayc.AddAt(bestConst,itsindex);\r
510 trackarrayl.AddAt(bestLong,itsindex);\r
511 new (&helixes[itsindex]) AliHelix(*best);\r
512 }\r
513 //\r
514 //\r
515 //\r
516 // first iterration of V0 finder\r
517 //\r
61673d36 518 // AM Comment out for optimization\r
519 // Int_t rejectBase=0;\r
520 // Int_t cutN=0;\r
767aaecb 521\r
cd90f0a2 522 for (Int_t iesd0=0;iesd0<ntracks;iesd0++){\r
523 Int_t itrack0 = itsmap[iesd0];\r
61673d36 524 //-AM comment for optimization and store the forbidden value in the debug streamer\r
cd90f0a2 525 if (forbidden[itrack0]) continue;\r
526 AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);\r
527 if (!btrack0) continue; \r
cd90f0a2 528 AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);\r
529 //\r
530 for (Int_t iesd1=iesd0+1;iesd1<ntracks;iesd1++){\r
531 Int_t itrack1 = itsmap[iesd1];\r
61673d36 532 //-AM comment for optimization and store the forbidden value in the debug streamer\r
cd90f0a2 533 if (forbidden[itrack1]) continue;\r
534\r
535 AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1); \r
536 if (!btrack1) continue;\r
61673d36 537\r
538 if ( (btrack0->GetSign()==btrack1->GetSign()) && !AliITSReconstructor::GetRecoParam()->GetStoreLikeSignV0s()) continue;\r
539\r
cd90f0a2 540 Bool_t isGold = kFALSE;\r
541 if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){\r
542 isGold = kTRUE;\r
543 }\r
61673d36 544 // rejectBase=0;\r
cd90f0a2 545 AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);\r
546 AliHelix &h1 = helixes[itrack0];\r
547 AliHelix &h2 = helixes[itrack1];\r
548 //\r
549 // find linear distance\r
550 Double_t rmin =0;\r
551 //\r
552 //\r
553 //\r
554 Double_t phase[2][2],radius[2];\r
555 Int_t points = h1.GetRPHIintersections(h2, phase, radius);\r
61673d36 556 if (points==0) {\r
557 // cutN=1;\r
558 // rejectBase+=1<<cutN;\r
559 continue;\r
560 }\r
cd90f0a2 561 Double_t delta[2]={1000000,1000000}; \r
562 rmin = radius[0];\r
563 h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);\r
564 if (points==2){ \r
565 if (radius[1]<rmin) rmin = radius[1];\r
566 h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);\r
567 }\r
568 rmin = TMath::Sqrt(rmin);\r
569 Double_t distance = 0;\r
570 Double_t radiusC = 0;\r
571 Int_t iphase = 0;\r
572 if (points==1 || delta[0]<delta[1]){\r
573 distance = TMath::Sqrt(delta[0]);\r
574 radiusC = TMath::Sqrt(radius[0]);\r
575 }else{\r
576 distance = TMath::Sqrt(delta[1]);\r
577 radiusC = TMath::Sqrt(radius[1]);\r
578 iphase=1;\r
579 }\r
61673d36 580 if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])){\r
581 // cutN=2;\r
582 //rejectBase+=1<<cutN;\r
583 continue;\r
584 }\r
585 if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])){\r
586 // cutN=3;\r
587 // rejectBase+=1<<cutN;\r
588 continue;\r
589 } \r
cd90f0a2 590 Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1)); \r
61673d36 591 if (distance>maxDist){\r
592 // cutN=4;\r
593 // rejectBase+=1<<cutN;\r
594 continue;\r
595 }\r
cd90f0a2 596 Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);\r
61673d36 597 if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) {\r
598 // cutN=5;\r
599 // rejectBase+=1<<cutN;\r
600 continue;\r
601 }\r
cd90f0a2 602 //\r
603 //\r
604 // Double_t distance = TestV0(h1,h2,pvertex,rmin);\r
605 //\r
606 // if (distance>maxDist) continue;\r
607 // if (pvertex->GetRr()<kMinR) continue;\r
608 // if (pvertex->GetRr()>kMaxR) continue;\r
609 AliITStrackMI * track0=btrack0;\r
610 AliITStrackMI * track1=btrack1;\r
611 // if (pvertex->GetRr()<3.5){ \r
612 if (radiusC<3.5){ \r
613 //use longest tracks inside the pipe\r
614 track0 = (AliITStrackMI*)trackarrayl.At(itrack0);\r
615 track1 = (AliITStrackMI*)trackarrayl.At(itrack1);\r
616 } \r
617 //\r
618 //\r
767aaecb 619 \r
620\r
621 \r
cd90f0a2 622 pvertex->SetParamN(*track0);\r
623 pvertex->SetParamP(*track1);\r
624 pvertex->Update(primvertex);\r
625 pvertex->SetClusters(track0->ClIndex(),track1->ClIndex()); // register clusters\r
626\r
61673d36 627 // Define gamma, K0, lambda and lambda_bar from the decay particles and calculate the chi2 \r
628 AliKFVertex vertexKF;\r
629\r
630 vertexKF.X() = tracker->GetX();\r
631 vertexKF.Y() = tracker->GetY();\r
632 vertexKF.Z() = tracker->GetZ();\r
633 vertexKF.Covariance(0,0) = tracker->GetSigmaX()*tracker->GetSigmaX();\r
634 vertexKF.Covariance(1,2) = tracker->GetSigmaY()*tracker->GetSigmaY();\r
635 vertexKF.Covariance(2,2) = tracker->GetSigmaZ()*tracker->GetSigmaZ();\r
636 \r
637 AliKFParticle elecKF( *(pvertex->GetParamN()) ,11);\r
638 AliKFParticle posiKF( *(pvertex->GetParamP()) ,-11);\r
639 AliKFParticle pipKF( *(pvertex->GetParamN()) , 211);\r
640 AliKFParticle pinKF( *(pvertex->GetParamP()) ,-211);\r
641 AliKFParticle protKF( *(pvertex->GetParamP()) ,2212);\r
642 AliKFParticle aproKF ( *(pvertex->GetParamN()) ,-2212);\r
643\r
644\r
645 // Gamma\r
646 AliKFParticle gamKF(elecKF,posiKF);\r
647 gamKF.SetProductionVertex(vertexKF);\r
648\r
649 Float_t gamKFchi2 = 1000;\r
650 if ( gamKF.GetNDF()!=0 ){\r
651 gamKFchi2 = gamKF.GetChi2()/gamKF.GetNDF();\r
652 }\r
653\r
654 Float_t massG=0.;\r
655 Float_t sigmaMG=0.001;\r
656 gamKF.SetMassConstraint(massG,sigmaMG);\r
657\r
658 Float_t gamKFchi2C = 1000;\r
659 if ( gamKF.GetNDF()!=0 ){\r
660 gamKFchi2C = gamKF.GetChi2()/gamKF.GetNDF();\r
661 }\r
662\r
663 //K0 short\r
664 AliKFParticle k0KF(pipKF,pinKF);\r
665 k0KF.SetProductionVertex(vertexKF);\r
666\r
667 Float_t k0KFchi2 = 1000;\r
668 if ( k0KF.GetNDF()!=0 ){\r
669 k0KFchi2 = k0KF.GetChi2()/k0KF.GetNDF();\r
670 }\r
671\r
672 //Lambda\r
673 AliKFParticle lambdaKF(protKF,pinKF);\r
674 lambdaKF.SetProductionVertex(vertexKF);\r
675\r
676 Float_t lambdaKFchi2 = 1000;\r
677 if ( lambdaKF.GetNDF()!=0 ){\r
678 lambdaKFchi2 = lambdaKF.GetChi2()/lambdaKF.GetNDF();\r
679 }\r
680\r
681 //Lambda_bar\r
682 AliKFParticle alambKF(aproKF,pipKF);\r
683 alambKF.SetProductionVertex(vertexKF);\r
684\r
685 Float_t alambKFchi2 = 1000;\r
686 if ( alambKF.GetNDF()!=0 ){\r
687 alambKFchi2 = alambKF.GetChi2()/alambKF.GetNDF();\r
688 }\r
767aaecb 689\r
767aaecb 690\r
691\r
61673d36 692\r
693\r
694 if (pvertex->GetRr()<kMinR){\r
695 // cutN=6;\r
696 // rejectBase+=1<<cutN;\r
697 continue;\r
698 }\r
699 if (pvertex->GetRr()>kMaxR){\r
700 // cutN=7;\r
701 // rejectBase+=1<<cutN;\r
702 continue;\r
703 }\r
704 if (pvertex->GetV0CosineOfPointingAngle()<kMinPointAngle){\r
705 // cutN=8;\r
706 // rejectBase+=1<<cutN;\r
707 continue;\r
708 }\r
cd90f0a2 709//Bo: if (pvertex->GetDist2()>maxDist) continue;\r
61673d36 710\r
711 if (pvertex->GetDcaV0Daughters()>maxDist){\r
712 // cutN=9;\r
713 // rejectBase+=1<<cutN;\r
714 continue;\r
715 }\r
cd90f0a2 716//Bo: pvertex->SetLab(0,track0->GetLabel());\r
717//Bo: pvertex->SetLab(1,track1->GetLabel());\r
718 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
719 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
720 // \r
721 AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy; \r
722 AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;\r
723\r
724 //\r
725 //\r
726 TObjArray * array0b = (TObjArray*)bestHypothesys->At(itrack0);\r
767aaecb 727 if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<kMinTgl1) {\r
cd90f0a2 728 tracker->SetCurrentEsdTrack(itrack0);\r
729 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack0),itrack0, kFALSE);\r
730 }\r
731 TObjArray * array1b = (TObjArray*)bestHypothesys->At(itrack1);\r
767aaecb 732 if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<kMinTgl1) { \r
cd90f0a2 733 tracker->SetCurrentEsdTrack(itrack1);\r
734 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack1),itrack1, kFALSE);\r
735 }\r
736 //\r
737 AliITStrackMI * track0b = (AliITStrackMI*)originalTracks->At(itrack0);\r
738 AliITStrackMI * track1b = (AliITStrackMI*)originalTracks->At(itrack1);\r
739 AliITStrackMI * track0l = (AliITStrackMI*)originalTracks->At(itrack0);\r
740 AliITStrackMI * track1l = (AliITStrackMI*)originalTracks->At(itrack1);\r
741 \r
767aaecb 742 Float_t minchi2before0=kMinchi2before0;\r
743 Float_t minchi2before1=kMinchi2before1;\r
744 Float_t minchi2after0 =kMinchi2after0;\r
745 Float_t minchi2after1 =kMinchi2after1;\r
cd90f0a2 746 Double_t xrp[3]; pvertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
747 Int_t maxLayer = tracker->GetNearestLayer(xrp); //I.B.\r
748 \r
749 if (array0b) for (Int_t i=0;i<5;i++){\r
750 // best track after vertex\r
751 AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);\r
752 if (!btrack) continue;\r
753 if (btrack->GetNumberOfClusters()>track0l->GetNumberOfClusters()) track0l = btrack; \r
754 // if (btrack->fX<pvertex->GetRr()-2.-0.5/(0.1+pvertex->GetAnglep()[2])) {\r
755 if (btrack->GetX()<pvertex->GetRr()-2.) {\r
756 if ( (maxLayer>i+2|| (i==0)) && btrack->GetNumberOfClusters()==(6-i)&&i<3){\r
757 Float_t sumchi2= 0;\r
758 Float_t sumn = 0;\r
759 if (maxLayer<3){ // take prim vertex as additional measurement\r
760 if (normdist[itrack0]>0 && htrackc0){\r
761 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack0]*normdist[itrack0],16.);\r
762 }else{\r
763 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack0]*normdist[itrack0]+3.),16.);\r
764 }\r
765 sumn += 3-maxLayer;\r
766 }\r
767 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
768 sumn+=1.; \r
769 if (btrack->GetClIndex(ilayer)<0){\r
767aaecb 770 sumchi2+=kAddchi2NegCl0;\r
cd90f0a2 771 continue;\r
772 }else{\r
773 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
774 for (Int_t itrack=0;itrack<4;itrack++){\r
775 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
776 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack0){\r
767aaecb 777 sumchi2+=kAddchi2SharedCl; //shared cluster\r
cd90f0a2 778 break;\r
779 }\r
780 }\r
781 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
782 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
783 }\r
784 }\r
785 sumchi2/=sumn;\r
786 if (sumchi2<minchi2before0) minchi2before0=sumchi2; \r
787 }\r
788 continue; //safety space - Geo manager will give exact layer\r
789 }\r
790 track0b = btrack;\r
791 minchi2after0 = btrack->GetNormChi2(i);\r
792 break;\r
793 }\r
794 if (array1b) for (Int_t i=0;i<5;i++){\r
795 // best track after vertex\r
796 AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);\r
797 if (!btrack) continue;\r
798 if (btrack->GetNumberOfClusters()>track1l->GetNumberOfClusters()) track1l = btrack; \r
799 // if (btrack->fX<pvertex->GetRr()-2-0.5/(0.1+pvertex->GetAnglep()[2])){\r
800 if (btrack->GetX()<pvertex->GetRr()-2){\r
801 if ((maxLayer>i+2 || (i==0))&&btrack->GetNumberOfClusters()==(6-i)&&(i<3)){\r
802 Float_t sumchi2= 0;\r
803 Float_t sumn = 0;\r
804 if (maxLayer<3){ // take prim vertex as additional measurement\r
805 if (normdist[itrack1]>0 && htrackc1){\r
806 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack1]*normdist[itrack1],16.);\r
807 }else{\r
808 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack1]*normdist[itrack1]+3.),16.);\r
809 }\r
810 sumn += 3-maxLayer;\r
811 }\r
812 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
813 sumn+=1.;\r
814 if (btrack->GetClIndex(ilayer)<0){\r
767aaecb 815 sumchi2+=kAddchi2NegCl1;\r
cd90f0a2 816 continue;\r
817 }else{\r
818 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
819 for (Int_t itrack=0;itrack<4;itrack++){\r
820 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
821 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack1){\r
767aaecb 822 sumchi2+=kAddchi2SharedCl; //shared cluster\r
cd90f0a2 823 break;\r
824 }\r
825 }\r
826 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
827 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
828 }\r
829 }\r
830 sumchi2/=sumn;\r
831 if (sumchi2<minchi2before1) minchi2before1=sumchi2; \r
832 }\r
833 continue; //safety space - Geo manager will give exact layer \r
834 }\r
835 track1b = btrack;\r
836 minchi2after1 = btrack->GetNormChi2(i);\r
837 break;\r
838 }\r
839 //\r
840 // position resolution - used for DCA cut\r
841 Float_t sigmad = track0b->GetSigmaY2()+track0b->GetSigmaZ2()+track1b->GetSigmaY2()+track1b->GetSigmaZ2()+\r
842 (track0b->GetX()-pvertex->GetRr())*(track0b->GetX()-pvertex->GetRr())*(track0b->GetSigmaSnp2()+track0b->GetSigmaTgl2())+\r
843 (track1b->GetX()-pvertex->GetRr())*(track1b->GetX()-pvertex->GetRr())*(track1b->GetSigmaSnp2()+track1b->GetSigmaTgl2());\r
844 sigmad =TMath::Sqrt(sigmad)+0.04;\r
845 if (pvertex->GetRr()>50){\r
846 Double_t cov0[15],cov1[15];\r
847 track0b->GetESDtrack()->GetInnerExternalCovariance(cov0);\r
848 track1b->GetESDtrack()->GetInnerExternalCovariance(cov1);\r
849 sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+\r
850 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+\r
851 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);\r
852 sigmad =TMath::Sqrt(sigmad)+0.05;\r
853 }\r
854 // \r
855 AliV0 vertex2;\r
856 vertex2.SetParamN(*track0b);\r
857 vertex2.SetParamP(*track1b);\r
858 vertex2.Update(primvertex);\r
859 //Bo: if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
860 if (vertex2.GetDcaV0Daughters()<=pvertex->GetDcaV0Daughters()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
861 pvertex->SetParamN(*track0b);\r
862 pvertex->SetParamP(*track1b);\r
863 pvertex->Update(primvertex);\r
864 pvertex->SetClusters(track0b->ClIndex(),track1b->ClIndex()); // register clusters\r
865 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
866 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
867 }\r
868 pvertex->SetDistSigma(sigmad);\r
869 //Bo: pvertex->SetDistNorm(pvertex->GetDist2()/sigmad); \r
870 pvertex->SetNormDCAPrim(normdist[itrack0],normdist[itrack1]);\r
871 //\r
872 // define likelihhod and causalities\r
873 //\r
874 Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26; \r
875 if (maxLayer<1){\r
876 Float_t fnorm0 = normdist[itrack0];\r
877 if (fnorm0<0) fnorm0*=-3;\r
878 Float_t fnorm1 = normdist[itrack1];\r
879 if (fnorm1<0) fnorm1*=-3;\r
880 if ((pvertex->GetAnglep()[2]>0.1) || ( (pvertex->GetRr()<10.5)&& pvertex->GetAnglep()[2]>0.05 ) || (pvertex->GetRr()<3)){\r
881 pb0 = TMath::Exp(-TMath::Min(fnorm0,Float_t(16.))/12.);\r
882 pb1 = TMath::Exp(-TMath::Min(fnorm1,Float_t(16.))/12.);\r
883 }\r
884 pvertex->SetChi2Before(normdist[itrack0]);\r
885 pvertex->SetChi2After(normdist[itrack1]); \r
886 pvertex->SetNAfter(0);\r
887 pvertex->SetNBefore(0);\r
888 }else{\r
889 pvertex->SetChi2Before(minchi2before0);\r
890 pvertex->SetChi2After(minchi2before1);\r
891 if (pvertex->GetAnglep()[2]>0.1 || ( pvertex->GetRr()<10.5 && pvertex->GetAnglep()[2]>0.05) || pvertex->GetRr()<3){\r
892 pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);\r
893 pb1 = TMath::Exp(-TMath::Min(minchi2before1,Float_t(16))/12.);\r
894 }\r
895 pvertex->SetNAfter(maxLayer);\r
896 pvertex->SetNBefore(maxLayer); \r
897 }\r
898 if (pvertex->GetRr()<90){\r
899 pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
900 pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
901 }\r
902 if (pvertex->GetRr()<20){\r
903 pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;\r
904 pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;\r
905 }\r
906 //\r
907 pvertex->SetCausality(pb0,pb1,pa0,pa1);\r
908 //\r
909 // Likelihood calculations - apply cuts\r
910 // \r
61673d36 911 \r
912 // AM - Comment out for optimization and store the v0OK value\r
913 // Int_t v0OK = 0;\r
914 // Int_t cutOKN=0;\r
cd90f0a2 915 Bool_t v0OK = kTRUE;\r
61673d36 916\r
917\r
cd90f0a2 918 Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];\r
919 p12 += pvertex->GetParamN()->GetParameter()[4]*pvertex->GetParamN()->GetParameter()[4];\r
920 p12 = TMath::Sqrt(p12); // "mean" momenta\r
767aaecb 921\r
922 Float_t sigmap0 = kSigp0Par0+kSigp0Par1/(kSigp0Par2+pvertex->GetRr()); \r
923 Float_t sigmap = kSigpPar0*sigmap0*(kSigpPar1+kSigpPar2*p12); // "resolution: of point angle - as a function of radius and momenta\r
924\r
cd90f0a2 925\r
926 Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);\r
927 Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*\r
928 TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));\r
929 //\r
930 //Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);\r
931 Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();\r
61673d36 932 Float_t likelihood0 = (TMath::Exp(-lDistNorm)+0.1) *(pvertex->GetDcaV0Daughters()<kMaxDcaLh0)*(lDistNorm<5);\r
cd90f0a2 933\r
934 Float_t likelihood1 = TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/sigmap)+\r
935 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(4.*sigmap))+\r
936 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(8.*sigmap))+\r
937 0.1*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/0.01);\r
938 //\r
61673d36 939 if (causalityA<kCausality0Cut){\r
940 // cutOKN=1;\r
941 // v0OK += 1<<cutOKN;\r
942 v0OK = kFALSE;\r
943 }\r
944 if (TMath::Sqrt(likelihood0*likelihood1)<kLikelihood01Cut){\r
945 // cutOKN=2;\r
946 // v0OK += 1<<cutOKN;\r
947 v0OK = kFALSE;\r
948 }\r
949 if (likelihood1<kLikelihood1Cut){\r
950 // cutOKN=3;\r
951 // v0OK += 1<<cutOKN;\r
952 v0OK = kFALSE;\r
953 }\r
954 if (TMath::Power(likelihood0*likelihood1*causalityB,0.33)<kCombinedCut){\r
955 // cutOKN=4;\r
956 // v0OK += 1<<cutOKN;\r
957 v0OK = kFALSE;\r
958 }\r
cd90f0a2 959 //\r
960 //\r
767aaecb 961 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){ \r
cd90f0a2 962 Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;\r
963 cstream<<"It0"<<\r
964 "Tr0.="<<track0<< //best without constrain\r
965 "Tr1.="<<track1<< //best without constrain \r
61673d36 966 "posiKF.="<<&posiKF<< //KF from track0\r
967 "elecKF.="<<&elecKF<< //KF from track1\r
cd90f0a2 968 "Tr0B.="<<track0b<< //best without constrain after vertex\r
969 "Tr1B.="<<track1b<< //best without constrain after vertex \r
970 "Tr0C.="<<htrackc0<< //best with constrain if exist\r
971 "Tr1C.="<<htrackc1<< //best with constrain if exist\r
972 "Tr0L.="<<track0l<< //longest best \r
973 "Tr1L.="<<track1l<< //longest best\r
974 "Esd0.="<<track0->GetESDtrack()<< // esd track0 params\r
975 "Esd1.="<<track1->GetESDtrack()<< // esd track1 params\r
976 "V0.="<<pvertex<< //vertex properties\r
977 "V0b.="<<&vertex2<< //vertex properties at "best" track\r
61673d36 978 "gamKF.="<<&gamKF<< //KF from pvertex\r
979 "k0KF.="<<&k0KF<< //KF from pvertex\r
980 "lambdaKF.="<<&lambdaKF<< //KF from pvertex\r
981 "alambKF.="<<&lambdaKF<< //KF from pvertex\r
982 "gamKFchi2="<<gamKFchi2<< //Normalized chi2 from KF assuming gamma momther\r
983 "gamKFchi2C="<<gamKFchi2C<< //Normalized chi2 from KF assuming gamma mother+mass constraint\r
984 "k0KFchi2="<<k0KFchi2<< //Normalized chi2 from KF assuming K0 mother\r
985 "lambdaKFchi2="<<lambdaKFchi2<< //Normalized chi2 from KF assuming Lambda mother\r
986 "alambKFchi2="<<alambKFchi2<< //Normalized chi2 from KF assuming lambda_bar mother\r
cd90f0a2 987 "ND0="<<normdist[itrack0]<< //normalize distance for track0\r
988 "ND1="<<normdist[itrack1]<< //normalize distance for track1\r
989 "Gold="<<gold<< //\r
61673d36 990 // "RejectBase="<<rejectBase<< //rejection in First itteration\r
cd90f0a2 991 "OK="<<v0OK<<\r
992 "rmin="<<rmin<<\r
993 "sigmad="<<sigmad<<\r
61673d36 994 "Forbid0="<<forbidden[itrack0]<<\r
995 "Forbid1="<<forbidden[itrack1]<<\r
cd90f0a2 996 "\n";\r
997 } \r
61673d36 998 // if (rejectBase>0) continue;\r
999 //if (forbidden[itrack0]>0 ||forbidden[itrack1]>0) continue; \r
cd90f0a2 1000 //\r
1001 pvertex->SetStatus(0);\r
1002 // if (rejectBase) {\r
1003 // pvertex->SetStatus(-100);\r
1004 //}\r
1005 if (pvertex->GetV0CosineOfPointingAngle()>kMinPointAngle2) {\r
1006 //Bo: pvertex->SetESDindexes(track0->GetESDtrack()->GetID(),track1->GetESDtrack()->GetID());\r
1007 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());//Bo: consistency 0 for neg\r
1008 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());//Bo: consistency 1 for pos\r
61673d36 1009 // if (v0OK==0){\r
cd90f0a2 1010 if (v0OK){\r
1011 // AliV0vertex vertexjuri(*track0,*track1);\r
1012 // vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());\r
1013 // event->AddV0(&vertexjuri);\r
1014 pvertex->SetStatus(100);\r
1015 }\r
1016 pvertex->SetOnFlyStatus(kTRUE);\r
1017 pvertex->ChangeMassHypothesis(kK0Short);\r
1018 event->AddV0(pvertex);\r
1019 }\r
1020 }\r
1021 }\r
1022 //\r
1023 //\r
1024 // delete temporary arrays\r
1025 // \r
1026 delete[] forbidden;\r
1027 delete[] minPointAngle;\r
1028 delete[] maxr;\r
1029 delete[] minr;\r
1030 delete[] norm;\r
1031 delete[] normdist;\r
1032 delete[] normdist1;\r
1033 delete[] normdist0;\r
1034 delete[] dist;\r
1035 delete[] itsmap;\r
1036 delete[] helixes;\r
1037 delete pvertex;\r
1038}\r
1039//------------------------------------------------------------------------\r
1040void AliITSV0Finder::RefitV02(const AliESDEvent *event,\r
1041 AliITStrackerMI *tracker) \r
1042{\r
1043 //\r
1044 //try to refit V0s in the third path of the reconstruction\r
1045 //\r
1046 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
1047 //\r
1048 Int_t nv0s = event->GetNumberOfV0s();\r
1049 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
1050 AliV0 v0temp;\r
1051 for (Int_t iv0 = 0; iv0<nv0s;iv0++){\r
1052 AliV0 * v0mi = (AliV0*)event->GetV0(iv0);\r
1053 if (!v0mi) continue;\r
1054 Int_t itrack0 = v0mi->GetIndex(0);\r
1055 Int_t itrack1 = v0mi->GetIndex(1);\r
1056 AliESDtrack *esd0 = event->GetTrack(itrack0);\r
1057 AliESDtrack *esd1 = event->GetTrack(itrack1);\r
1058 if (!esd0||!esd1) continue;\r
1059 AliITStrackMI tpc0(*esd0); \r
1060 AliITStrackMI tpc1(*esd1);\r
1061 Double_t x,y,z; v0mi->GetXYZ(x,y,z); //I.B. \r
1062 Double_t alpha =TMath::ATan2(y,x); //I.B.\r
1063 if (v0mi->GetRr()>85){\r
1064 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
1065 v0temp.SetParamN(tpc0);\r
1066 v0temp.SetParamP(tpc1);\r
1067 v0temp.Update(primvertex);\r
767aaecb 1068 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 1069 "V0.="<<v0mi<<\r
1070 "V0refit.="<<&v0temp<<\r
1071 "Tr0.="<<&tpc0<<\r
1072 "Tr1.="<<&tpc1<<\r
1073 "\n";\r
1074 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1075 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1076 v0mi->SetParamN(tpc0);\r
1077 v0mi->SetParamP(tpc1);\r
1078 v0mi->Update(primvertex);\r
1079 }\r
1080 }\r
1081 continue;\r
1082 }\r
1083 if (v0mi->GetRr()>35){\r
1084 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
1085 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1);\r
1086 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
1087 v0temp.SetParamN(tpc0);\r
1088 v0temp.SetParamP(tpc1);\r
1089 v0temp.Update(primvertex);\r
767aaecb 1090 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 1091 "V0.="<<v0mi<<\r
1092 "V0refit.="<<&v0temp<<\r
1093 "Tr0.="<<&tpc0<<\r
1094 "Tr1.="<<&tpc1<<\r
1095 "\n";\r
1096 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1097 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1098 v0mi->SetParamN(tpc0);\r
1099 v0mi->SetParamP(tpc1);\r
1100 v0mi->Update(primvertex);\r
1101 } \r
1102 }\r
1103 continue;\r
1104 }\r
1105 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
1106 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1); \r
1107 // if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
1108 if (tracker->RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && \r
1109 tracker->RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){\r
1110 v0temp.SetParamN(tpc0);\r
1111 v0temp.SetParamP(tpc1);\r
1112 v0temp.Update(primvertex);\r
767aaecb 1113 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 1114 "V0.="<<v0mi<<\r
1115 "V0refit.="<<&v0temp<<\r
1116 "Tr0.="<<&tpc0<<\r
1117 "Tr1.="<<&tpc1<<\r
1118 "\n";\r
1119 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1120 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1121 v0mi->SetParamN(tpc0);\r
1122 v0mi->SetParamP(tpc1);\r
1123 v0mi->Update(primvertex);\r
1124 } \r
1125 } \r
1126 }\r
1127}\r
1128//------------------------------------------------------------------------\r
767aaecb 1129\r
1130\r
1131AliITSV0Finder::~AliITSV0Finder()\r
1132{\r
1133 //\r
1134 //destructor\r
1135 //\r
1136 if (fDebugStreamer) {\r
1137 //fDebugStreamer->Close();\r
1138 delete fDebugStreamer;\r
1139 }\r
1140\r
1141}\r