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coverity warnings 15748 and 15392 fixed
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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
c0b60eb0 52 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0)\r
53 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");\r
767aaecb 54} \r
55\r
cd90f0a2 56//------------------------------------------------------------------------\r
57void AliITSV0Finder::UpdateTPCV0(const AliESDEvent *event,\r
58 AliITStrackerMI *tracker)\r
59{\r
60 //\r
61 //try to update, or reject TPC V0s\r
62 //\r
767aaecb 63 const Float_t kMinTgl2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl2();\r
64\r
cd90f0a2 65 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
66\r
67 Int_t nv0s = event->GetNumberOfV0s();\r
68 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
69\r
70 for (Int_t i=0;i<nv0s;i++){\r
71 AliESDv0 * vertex = event->GetV0(i);\r
72 Int_t ip = vertex->GetIndex(0);\r
73 Int_t im = vertex->GetIndex(1);\r
74 //\r
75 TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)trackHypothesys->At(ip):0;\r
76 TObjArray * arraym = (im<nitstracks) ? (TObjArray*)trackHypothesys->At(im):0;\r
77 AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;\r
78 AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;\r
79 //\r
80 //\r
81 if (trackp){\r
82 if (trackp->GetNumberOfClusters()+trackp->GetNDeadZone()>5.5){\r
83 if (trackp->GetConstrain()&&trackp->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
84 if (!trackp->GetConstrain()&&trackp->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
85 }\r
86 }\r
87\r
88 if (trackm){\r
89 if (trackm->GetNumberOfClusters()+trackm->GetNDeadZone()>5.5){\r
90 if (trackm->GetConstrain()&&trackm->GetChi2MIP(0)<3) vertex->SetStatus(-100);\r
91 if (!trackm->GetConstrain()&&trackm->GetChi2MIP(0)<2) vertex->SetStatus(-100); \r
92 }\r
93 }\r
94 if (vertex->GetStatus()==-100) continue;\r
95 //\r
96 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
97 Int_t clayer = tracker->GetNearestLayer(xrp); //I.B.\r
98 vertex->SetNBefore(clayer); //\r
99 vertex->SetChi2Before(9*clayer); //\r
100 vertex->SetNAfter(6-clayer); //\r
101 vertex->SetChi2After(0); //\r
102 //\r
103 if (clayer >1 ){ // calculate chi2 before vertex\r
104 Float_t chi2p = 0, chi2m=0; \r
105 //\r
106 if (trackp){\r
107 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
108 if (trackp->GetClIndex(ilayer)>=0){\r
109 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
110 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
111 }\r
112 else{\r
113 chi2p+=9;\r
114 }\r
115 }\r
116 }else{\r
117 chi2p = 9*clayer;\r
118 }\r
119 //\r
120 if (trackm){\r
121 for (Int_t ilayer=0;ilayer<clayer;ilayer++){\r
122 if (trackm->GetClIndex(ilayer)>=0){\r
123 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
124 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
125 }\r
126 else{\r
127 chi2m+=9;\r
128 }\r
129 }\r
130 }else{\r
131 chi2m = 9*clayer;\r
132 }\r
133 vertex->SetChi2Before(TMath::Min(chi2p,chi2m));\r
134 if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex\r
135 }\r
136 \r
137 if (clayer < 5 ){ // calculate chi2 after vertex\r
138 Float_t chi2p = 0, chi2m=0; \r
139 //\r
767aaecb 140 if (trackp&&TMath::Abs(trackp->GetTgl())<kMinTgl2){\r
cd90f0a2 141 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
142 if (trackp->GetClIndex(ilayer)>=0){\r
143 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+\r
144 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));\r
145 }\r
146 else{\r
147 chi2p+=9;\r
148 }\r
149 }\r
150 }else{\r
151 chi2p = 0;\r
152 }\r
153 //\r
767aaecb 154 if (trackm&&TMath::Abs(trackm->GetTgl())<kMinTgl2){\r
cd90f0a2 155 for (Int_t ilayer=clayer;ilayer<6;ilayer++){\r
156 if (trackm->GetClIndex(ilayer)>=0){\r
157 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+\r
158 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));\r
159 }\r
160 else{\r
161 chi2m+=9;\r
162 }\r
163 }\r
164 }else{\r
165 chi2m = 0;\r
166 }\r
167 vertex->SetChi2After(TMath::Max(chi2p,chi2m));\r
168 if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS\r
169 }\r
170 }\r
171 //\r
172}\r
173//------------------------------------------------------------------------\r
174void AliITSV0Finder::FindV02(AliESDEvent *event,\r
175 AliITStrackerMI *tracker) \r
176{\r
177 //\r
178 // V0 finder\r
179 //\r
180 // Cuts on DCA - R dependent\r
181 // max distance DCA between 2 tracks cut \r
182 // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);\r
183 //\r
443e42aa 184 const Bool_t kCheckPropagate = kFALSE;\r
767aaecb 185 const Float_t kMaxDist0 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist0();\r
186 const Float_t kMaxDist1 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist1();\r
187 const Float_t kMaxDist = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist();\r
188 const Float_t kMinPointAngle = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle();\r
189 const Float_t kMinPointAngle2 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle2();\r
190 const Float_t kMinR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinR();\r
191 const Float_t kMaxR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxR();\r
61673d36 192 const Float_t kMinPABestConst = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPABestConst();\r
193 const Float_t kMaxRBestConst = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRBestConst();\r
767aaecb 194 const Float_t kCausality0Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCausality0Cut();\r
195 const Float_t kLikelihood01Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood01Cut();\r
196 const Float_t kLikelihood1Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood1Cut();\r
197 const Float_t kCombinedCut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCombinedCut();\r
b47f2a3f 198 const Float_t kMinClFullTrk= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinClFullTrk();\r
767aaecb 199 const Float_t kMinTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl0();\r
61673d36 200 const Float_t kMinRTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinRTgl0();\r
201\r
202 const Float_t kMinNormDistForbTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForbTgl0();\r
203 const Float_t kMinClForb0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinClForb0();\r
204 const Float_t kMinNormDistForb1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb1();\r
205 const Float_t kMinNormDistForb2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb2();\r
206 const Float_t kMinNormDistForb3= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb3();\r
207 const Float_t kMinNormDistForb4= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb4();\r
208 const Float_t kMinNormDistForb5= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb5();\r
83052b75 209 const Float_t kMinNormDistForbProt= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForbProt();\r
210 const Float_t kMaxPidProbPionForb= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxPidProbPionForb();\r
61673d36 211\r
212 const Float_t kMinRTPCdensity= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinRTPCdensity();\r
213 const Float_t kMaxRTPCdensity0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity0();\r
214 const Float_t kMaxRTPCdensity10= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity10();\r
215 const Float_t kMaxRTPCdensity20= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity20();\r
216 const Float_t kMaxRTPCdensity30= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity30();\r
217\r
218\r
767aaecb 219 const Float_t kMinTPCdensity= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTPCdensity();\r
220 const Float_t kMinTgl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl1();\r
221\r
222 const Float_t kMinchi2before0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before0();\r
223 const Float_t kMinchi2before1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before1();\r
224 const Float_t kMinchi2after0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after0();\r
225 const Float_t kMinchi2after1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after1();\r
226 const Float_t kAddchi2SharedCl= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2SharedCl();\r
227 const Float_t kAddchi2NegCl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl0();\r
228 const Float_t kAddchi2NegCl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl1();\r
229\r
230 const Float_t kSigp0Par0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par0();\r
231 const Float_t kSigp0Par1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par1();\r
232 const Float_t kSigp0Par2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par2();\r
233\r
234 const Float_t kSigpPar0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar0();\r
235 const Float_t kSigpPar1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar1();\r
236 const Float_t kSigpPar2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar2();\r
61673d36 237 const Float_t kMaxDcaLh0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDcaLh0();\r
238\r
cd90f0a2 239\r
240 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();\r
241 TObjArray *bestHypothesys = tracker->GetBestHypothesys();\r
242 TObjArray *originalTracks = tracker->GetOriginal();\r
243 //\r
244 //\r
245 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
246 Int_t ntracks = event->GetNumberOfTracks(); \r
247 Int_t nitstracks = trackHypothesys->GetEntriesFast();\r
248 originalTracks->Expand(ntracks);\r
249 trackHypothesys->Expand(ntracks);\r
250 bestHypothesys->Expand(ntracks);\r
251 //\r
252 AliHelix * helixes = new AliHelix[ntracks+2];\r
253 TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain\r
254 TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain\r
255 TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain\r
61673d36 256 //Change from Bool_t to Int_t for optimization\r
257 // Int_t forbN=0;\r
258 // Int_t * forbidden = new Int_t [ntracks+2];\r
cd90f0a2 259 Bool_t * forbidden = new Bool_t [ntracks+2];\r
260 Int_t *itsmap = new Int_t [ntracks+2];\r
261 Float_t *dist = new Float_t[ntracks+2];\r
262 Float_t *normdist0 = new Float_t[ntracks+2];\r
263 Float_t *normdist1 = new Float_t[ntracks+2];\r
264 Float_t *normdist = new Float_t[ntracks+2];\r
265 Float_t *norm = new Float_t[ntracks+2];\r
266 Float_t *maxr = new Float_t[ntracks+2];\r
267 Float_t *minr = new Float_t[ntracks+2];\r
268 Float_t *minPointAngle= new Float_t[ntracks+2];\r
269 //\r
270 AliV0 *pvertex = new AliV0;\r
271 AliITStrackMI * dummy= new AliITStrackMI;\r
272 dummy->SetLabel(0);\r
273 AliITStrackMI trackat0; //temporary track for DCA calculation\r
274 //\r
275 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
276 //\r
277 // make ITS - ESD map\r
278 //\r
279 for (Int_t itrack=0;itrack<ntracks+2;itrack++) {\r
280 itsmap[itrack] = -1;\r
61673d36 281 // forbidden[itrack] = 0;\r
cd90f0a2 282 forbidden[itrack] = kFALSE;\r
283 maxr[itrack] = kMaxR;\r
284 minr[itrack] = kMinR;\r
285 minPointAngle[itrack] = kMinPointAngle;\r
286 }\r
287 for (Int_t itrack=0;itrack<nitstracks;itrack++){\r
288 AliITStrackMI * original = (AliITStrackMI*)(originalTracks->At(itrack));\r
289 Int_t esdindex = original->GetESDtrack()->GetID();\r
290 itsmap[esdindex] = itrack;\r
291 }\r
292 //\r
293 // create ITS tracks from ESD tracks if not done before\r
294 //\r
295 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
296 if (itsmap[itrack]>=0) continue;\r
297 AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));\r
298 //tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());\r
299 //tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ(); \r
300 tpctrack->GetDZ(tracker->GetX(),tracker->GetY(),tracker->GetZ(),tpctrack->GetDP()); //I.B.\r
301 if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){\r
302 // tracks which can reach inner part of ITS\r
303 // propagate track to outer its volume - with correction for material\r
304 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(tpctrack); \r
305 }\r
306 itsmap[itrack] = nitstracks;\r
307 originalTracks->AddAt(tpctrack,nitstracks);\r
308 nitstracks++;\r
309 }\r
310 //\r
311 // fill temporary arrays\r
312 //\r
313 for (Int_t itrack=0;itrack<ntracks;itrack++){\r
314 AliESDtrack * esdtrack = event->GetTrack(itrack);\r
315 Int_t itsindex = itsmap[itrack];\r
316 AliITStrackMI *original = (AliITStrackMI*)originalTracks->At(itsmap[itrack]);\r
317 if (!original) continue;\r
318 AliITStrackMI *bestConst = 0;\r
319 AliITStrackMI *bestLong = 0;\r
320 AliITStrackMI *best = 0; \r
321 //\r
322 //\r
323 TObjArray * array = (TObjArray*) trackHypothesys->At(itsindex);\r
324 Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();\r
325 // Get best track with vertex constrain\r
326 for (Int_t ih=0;ih<hentries;ih++){\r
327 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
328 if (!trackh->GetConstrain()) continue;\r
329 if (!bestConst) bestConst = trackh;\r
61673d36 330 if (trackh->GetNumberOfClusters()>kMinClFullTrk ){\r
cd90f0a2 331 bestConst = trackh; // full track - with minimal chi2\r
332 break;\r
333 }\r
334 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()) continue; \r
335 bestConst = trackh;\r
336 break;\r
337 }\r
338 // Get best long track without vertex constrain and best track without vertex constrain\r
339 for (Int_t ih=0;ih<hentries;ih++){\r
340 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);\r
341 if (trackh->GetConstrain()) continue;\r
342 if (!best) best = trackh;\r
343 if (!bestLong) bestLong = trackh;\r
b47f2a3f 344 if (trackh->GetNumberOfClusters()>kMinClFullTrk){\r
cd90f0a2 345 bestLong = trackh; // full track - with minimal chi2\r
346 break;\r
347 }\r
348 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()) continue; \r
349 bestLong = trackh; \r
350 }\r
351 if (!best) {\r
352 best = original;\r
353 bestLong = original;\r
354 }\r
355 //I.B. trackat0 = *bestLong;\r
356 new (&trackat0) AliITStrackMI(*bestLong);\r
357 Double_t xx,yy,zz,alpha; \r
358 if (!bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz)) continue;\r
61673d36 359 \r
360\r
cd90f0a2 361 alpha = TMath::ATan2(yy,xx); \r
362 // if (!trackat0.Propagate(alpha,0)) continue; \r
443e42aa 363 // trackat0.Propagate(alpha,0); //PH The check on the return value is temporarily disabled (bug 45751) \r
364 if(!trackat0.Propagate(alpha,0) && kCheckPropagate)continue;\r
cd90f0a2 365 // calculate normalized distances to the vertex \r
366 //\r
367 Float_t ptfac = (1.+100.*TMath::Abs(trackat0.GetC()));\r
368 if ( bestLong->GetNumberOfClusters()>3 ){ \r
369 dist[itsindex] = trackat0.GetY();\r
370 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
371 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
372 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
373 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
374 if (!bestConst){\r
375 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<6) normdist[itsindex]*=2.;\r
376 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<5) normdist[itsindex]*=2.;\r
377 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<4) normdist[itsindex]*=2.;\r
378 }else{\r
379 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<6) normdist[itsindex]*=1.5;\r
380 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<5) normdist[itsindex]*=1.5;\r
381 }\r
382 }\r
383 else{ \r
384 if (bestConst&&bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5){\r
385 dist[itsindex] = bestConst->GetD(0);\r
386 norm[itsindex] = bestConst->GetDnorm(0);\r
387 normdist0[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
388 normdist1[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);\r
389 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
390 }else{\r
391 dist[itsindex] = trackat0.GetY();\r
392 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());\r
393 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);\r
394 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));\r
395 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);\r
767aaecb 396 if (TMath::Abs(trackat0.GetTgl())>kMinTgl0){\r
61673d36 397 if (normdist[itsindex]<kMinNormDistForbTgl0){\r
398 // forbN=1;\r
399 // forbidden[itsindex]+=1<<forbN;\r
400 forbidden[itsindex]=kTRUE;\r
401 }\r
402 if (normdist[itsindex]>kMinNormDistForbTgl0) {\r
403 minr[itsindex] = TMath::Max(kMinRTgl0,minr[itsindex]);\r
cd90f0a2 404 }\r
405 }\r
406 }\r
407 }\r
61673d36 408\r
409\r
cd90f0a2 410 //\r
411 //-----------------------------------------------------------\r
412 //Forbid primary track candidates - \r
413 //\r
414 //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");\r
415 //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");\r
416 //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");\r
417 //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");\r
418 //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");\r
419 //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");\r
420 //-----------------------------------------------------------\r
421 if (bestConst){\r
61673d36 422 if (bestLong->GetNumberOfClusters()<4 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>kMinClForb0){\r
423 // forbN=2;\r
424 // forbidden[itsindex]+=1<<forbN;\r
425 forbidden[itsindex]=kTRUE;\r
426 }\r
427 if (normdist[itsindex]<kMinNormDistForb1 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>5.5){\r
428 // forbN=3;\r
429 // forbidden[itsindex]+=1<<forbN;\r
430 forbidden[itsindex]=kTRUE;\r
431 }\r
432 if (normdist[itsindex]<kMinNormDistForb2 && bestConst->GetClIndex(0)>=0 && bestConst->GetClIndex(1)>=0 ){\r
433 // forbN=4;\r
434 // forbidden[itsindex]+=1<<forbN;\r
435 forbidden[itsindex]=kTRUE;\r
436 }\r
437 if (normdist[itsindex]<kMinNormDistForb3 && bestConst->GetClIndex(0)>=0){\r
438 // forbN=5;\r
439 // forbidden[itsindex]+=1<<forbN;\r
440 forbidden[itsindex]=kTRUE;\r
441 }\r
442 if (normdist[itsindex]<kMinNormDistForb4 && bestConst->GetNormChi2(0)<2){\r
443 // forbN=6;\r
444 // forbidden[itsindex]+=1<<forbN;\r
445 forbidden[itsindex]=kTRUE;\r
446 }\r
447 if (normdist[itsindex]<kMinNormDistForb5 && bestConst->GetNormChi2(0)<1){\r
448 // forbN=7;\r
449 // forbidden[itsindex]+=1<<forbN;\r
450 forbidden[itsindex]=kTRUE;\r
451 }\r
cd90f0a2 452 if (bestConst->GetNormChi2(0)<2.5) {\r
61673d36 453 minPointAngle[itsindex]= kMinPABestConst;\r
454 maxr[itsindex] = kMaxRBestConst;\r
cd90f0a2 455 }\r
456 }\r
457 //\r
458 //forbid daughter kink candidates\r
459 //\r
460 if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;\r
461 Bool_t isElectron = kTRUE;\r
462 Bool_t isProton = kTRUE;\r
463 Double_t pid[5];\r
464 esdtrack->GetESDpid(pid);\r
465 for (Int_t i=1;i<5;i++){\r
466 if (pid[0]<pid[i]) isElectron= kFALSE;\r
467 if (pid[4]<pid[i]) isProton= kFALSE;\r
468 }\r
469 if (isElectron){\r
470 forbidden[itsindex]=kFALSE; \r
471 normdist[itsindex]*=-1;\r
472 }\r
473 if (isProton){\r
83052b75 474 if (normdist[itsindex]>kMinNormDistForbProt) forbidden[itsindex]=kFALSE; \r
cd90f0a2 475 normdist[itsindex]*=-1;\r
476 }\r
477\r
83052b75 478 // We allow all tracks that are not pions\r
479 if( (pid[1]+pid[2])< kMaxPidProbPionForb ){\r
480 forbidden[itsindex]=kFALSE;\r
481 }\r
482\r
cd90f0a2 483 //\r
484 // Causality cuts in TPC volume\r
485 //\r
61673d36 486 if (esdtrack->GetTPCdensity(0,10) >kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity0),maxr[itsindex]);\r
487 if (esdtrack->GetTPCdensity(10,30)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity10),maxr[itsindex]);\r
488 if (esdtrack->GetTPCdensity(20,40)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity20),maxr[itsindex]);\r
489 if (esdtrack->GetTPCdensity(30,50)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity30),maxr[itsindex]);\r
cd90f0a2 490 //\r
61673d36 491 if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->GetNumberOfClusters()<3) minr[itsindex]=kMinRTPCdensity; \r
cd90f0a2 492 //\r
493 //\r
61673d36 494\r
767aaecb 495 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){\r
cd90f0a2 496 cstream<<"Track"<<\r
497 "Tr0.="<<best<<\r
498 "Tr1.="<<((bestConst)? bestConst:dummy)<<\r
499 "Tr2.="<<bestLong<<\r
500 "Tr3.="<<&trackat0<<\r
501 "Esd.="<<esdtrack<<\r
502 "Dist="<<dist[itsindex]<<\r
503 "ND0="<<normdist0[itsindex]<<\r
504 "ND1="<<normdist1[itsindex]<<\r
505 "ND="<<normdist[itsindex]<<\r
506 "Pz="<<primvertex[2]<<\r
507 "Forbid="<<forbidden[itsindex]<<\r
508 "\n";\r
509 //\r
510 }\r
511 trackarray.AddAt(best,itsindex);\r
512 trackarrayc.AddAt(bestConst,itsindex);\r
513 trackarrayl.AddAt(bestLong,itsindex);\r
514 new (&helixes[itsindex]) AliHelix(*best);\r
515 }\r
516 //\r
517 //\r
518 //\r
519 // first iterration of V0 finder\r
520 //\r
61673d36 521 // AM Comment out for optimization\r
522 // Int_t rejectBase=0;\r
523 // Int_t cutN=0;\r
767aaecb 524\r
cd90f0a2 525 for (Int_t iesd0=0;iesd0<ntracks;iesd0++){\r
526 Int_t itrack0 = itsmap[iesd0];\r
61673d36 527 //-AM comment for optimization and store the forbidden value in the debug streamer\r
cd90f0a2 528 if (forbidden[itrack0]) continue;\r
529 AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);\r
530 if (!btrack0) continue; \r
cd90f0a2 531 AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);\r
532 //\r
533 for (Int_t iesd1=iesd0+1;iesd1<ntracks;iesd1++){\r
534 Int_t itrack1 = itsmap[iesd1];\r
61673d36 535 //-AM comment for optimization and store the forbidden value in the debug streamer\r
cd90f0a2 536 if (forbidden[itrack1]) continue;\r
537\r
538 AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1); \r
539 if (!btrack1) continue;\r
61673d36 540\r
541 if ( (btrack0->GetSign()==btrack1->GetSign()) && !AliITSReconstructor::GetRecoParam()->GetStoreLikeSignV0s()) continue;\r
542\r
cd90f0a2 543 Bool_t isGold = kFALSE;\r
544 if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){\r
545 isGold = kTRUE;\r
546 }\r
61673d36 547 // rejectBase=0;\r
cd90f0a2 548 AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);\r
549 AliHelix &h1 = helixes[itrack0];\r
550 AliHelix &h2 = helixes[itrack1];\r
551 //\r
552 // find linear distance\r
553 Double_t rmin =0;\r
554 //\r
555 //\r
556 //\r
557 Double_t phase[2][2],radius[2];\r
558 Int_t points = h1.GetRPHIintersections(h2, phase, radius);\r
61673d36 559 if (points==0) {\r
560 // cutN=1;\r
561 // rejectBase+=1<<cutN;\r
562 continue;\r
563 }\r
cd90f0a2 564 Double_t delta[2]={1000000,1000000}; \r
565 rmin = radius[0];\r
566 h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);\r
567 if (points==2){ \r
568 if (radius[1]<rmin) rmin = radius[1];\r
569 h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);\r
570 }\r
571 rmin = TMath::Sqrt(rmin);\r
572 Double_t distance = 0;\r
573 Double_t radiusC = 0;\r
574 Int_t iphase = 0;\r
575 if (points==1 || delta[0]<delta[1]){\r
576 distance = TMath::Sqrt(delta[0]);\r
577 radiusC = TMath::Sqrt(radius[0]);\r
578 }else{\r
579 distance = TMath::Sqrt(delta[1]);\r
580 radiusC = TMath::Sqrt(radius[1]);\r
581 iphase=1;\r
582 }\r
61673d36 583 if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])){\r
584 // cutN=2;\r
585 //rejectBase+=1<<cutN;\r
586 continue;\r
587 }\r
588 if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])){\r
589 // cutN=3;\r
590 // rejectBase+=1<<cutN;\r
591 continue;\r
592 } \r
cd90f0a2 593 Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1)); \r
61673d36 594 if (distance>maxDist){\r
595 // cutN=4;\r
596 // rejectBase+=1<<cutN;\r
597 continue;\r
598 }\r
cd90f0a2 599 Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);\r
61673d36 600 if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) {\r
601 // cutN=5;\r
602 // rejectBase+=1<<cutN;\r
603 continue;\r
604 }\r
cd90f0a2 605 //\r
606 //\r
607 // Double_t distance = TestV0(h1,h2,pvertex,rmin);\r
608 //\r
609 // if (distance>maxDist) continue;\r
610 // if (pvertex->GetRr()<kMinR) continue;\r
611 // if (pvertex->GetRr()>kMaxR) continue;\r
612 AliITStrackMI * track0=btrack0;\r
613 AliITStrackMI * track1=btrack1;\r
614 // if (pvertex->GetRr()<3.5){ \r
615 if (radiusC<3.5){ \r
616 //use longest tracks inside the pipe\r
617 track0 = (AliITStrackMI*)trackarrayl.At(itrack0);\r
618 track1 = (AliITStrackMI*)trackarrayl.At(itrack1);\r
619 } \r
620 //\r
621 //\r
767aaecb 622 \r
623\r
624 \r
cd90f0a2 625 pvertex->SetParamN(*track0);\r
626 pvertex->SetParamP(*track1);\r
627 pvertex->Update(primvertex);\r
628 pvertex->SetClusters(track0->ClIndex(),track1->ClIndex()); // register clusters\r
629\r
61673d36 630 // Define gamma, K0, lambda and lambda_bar from the decay particles and calculate the chi2 \r
631 AliKFVertex vertexKF;\r
632\r
633 vertexKF.X() = tracker->GetX();\r
634 vertexKF.Y() = tracker->GetY();\r
635 vertexKF.Z() = tracker->GetZ();\r
636 vertexKF.Covariance(0,0) = tracker->GetSigmaX()*tracker->GetSigmaX();\r
637 vertexKF.Covariance(1,2) = tracker->GetSigmaY()*tracker->GetSigmaY();\r
638 vertexKF.Covariance(2,2) = tracker->GetSigmaZ()*tracker->GetSigmaZ();\r
639 \r
640 AliKFParticle elecKF( *(pvertex->GetParamN()) ,11);\r
641 AliKFParticle posiKF( *(pvertex->GetParamP()) ,-11);\r
642 AliKFParticle pipKF( *(pvertex->GetParamN()) , 211);\r
643 AliKFParticle pinKF( *(pvertex->GetParamP()) ,-211);\r
644 AliKFParticle protKF( *(pvertex->GetParamP()) ,2212);\r
645 AliKFParticle aproKF ( *(pvertex->GetParamN()) ,-2212);\r
646\r
647\r
648 // Gamma\r
649 AliKFParticle gamKF(elecKF,posiKF);\r
650 gamKF.SetProductionVertex(vertexKF);\r
651\r
652 Float_t gamKFchi2 = 1000;\r
653 if ( gamKF.GetNDF()!=0 ){\r
654 gamKFchi2 = gamKF.GetChi2()/gamKF.GetNDF();\r
655 }\r
656\r
657 Float_t massG=0.;\r
658 Float_t sigmaMG=0.001;\r
659 gamKF.SetMassConstraint(massG,sigmaMG);\r
660\r
661 Float_t gamKFchi2C = 1000;\r
662 if ( gamKF.GetNDF()!=0 ){\r
663 gamKFchi2C = gamKF.GetChi2()/gamKF.GetNDF();\r
664 }\r
665\r
666 //K0 short\r
667 AliKFParticle k0KF(pipKF,pinKF);\r
668 k0KF.SetProductionVertex(vertexKF);\r
669\r
670 Float_t k0KFchi2 = 1000;\r
671 if ( k0KF.GetNDF()!=0 ){\r
672 k0KFchi2 = k0KF.GetChi2()/k0KF.GetNDF();\r
673 }\r
674\r
675 //Lambda\r
676 AliKFParticle lambdaKF(protKF,pinKF);\r
677 lambdaKF.SetProductionVertex(vertexKF);\r
678\r
679 Float_t lambdaKFchi2 = 1000;\r
680 if ( lambdaKF.GetNDF()!=0 ){\r
681 lambdaKFchi2 = lambdaKF.GetChi2()/lambdaKF.GetNDF();\r
682 }\r
683\r
684 //Lambda_bar\r
685 AliKFParticle alambKF(aproKF,pipKF);\r
686 alambKF.SetProductionVertex(vertexKF);\r
687\r
688 Float_t alambKFchi2 = 1000;\r
689 if ( alambKF.GetNDF()!=0 ){\r
690 alambKFchi2 = alambKF.GetChi2()/alambKF.GetNDF();\r
691 }\r
767aaecb 692\r
767aaecb 693\r
694\r
61673d36 695\r
696\r
697 if (pvertex->GetRr()<kMinR){\r
698 // cutN=6;\r
699 // rejectBase+=1<<cutN;\r
700 continue;\r
701 }\r
702 if (pvertex->GetRr()>kMaxR){\r
703 // cutN=7;\r
704 // rejectBase+=1<<cutN;\r
705 continue;\r
706 }\r
707 if (pvertex->GetV0CosineOfPointingAngle()<kMinPointAngle){\r
708 // cutN=8;\r
709 // rejectBase+=1<<cutN;\r
710 continue;\r
711 }\r
cd90f0a2 712//Bo: if (pvertex->GetDist2()>maxDist) continue;\r
61673d36 713\r
714 if (pvertex->GetDcaV0Daughters()>maxDist){\r
715 // cutN=9;\r
716 // rejectBase+=1<<cutN;\r
717 continue;\r
718 }\r
cd90f0a2 719//Bo: pvertex->SetLab(0,track0->GetLabel());\r
720//Bo: pvertex->SetLab(1,track1->GetLabel());\r
721 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
722 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
723 // \r
724 AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy; \r
725 AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;\r
726\r
727 //\r
728 //\r
729 TObjArray * array0b = (TObjArray*)bestHypothesys->At(itrack0);\r
767aaecb 730 if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<kMinTgl1) {\r
cd90f0a2 731 tracker->SetCurrentEsdTrack(itrack0);\r
732 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack0),itrack0, kFALSE);\r
733 }\r
734 TObjArray * array1b = (TObjArray*)bestHypothesys->At(itrack1);\r
767aaecb 735 if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<kMinTgl1) { \r
cd90f0a2 736 tracker->SetCurrentEsdTrack(itrack1);\r
737 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack1),itrack1, kFALSE);\r
738 }\r
739 //\r
740 AliITStrackMI * track0b = (AliITStrackMI*)originalTracks->At(itrack0);\r
741 AliITStrackMI * track1b = (AliITStrackMI*)originalTracks->At(itrack1);\r
742 AliITStrackMI * track0l = (AliITStrackMI*)originalTracks->At(itrack0);\r
743 AliITStrackMI * track1l = (AliITStrackMI*)originalTracks->At(itrack1);\r
744 \r
767aaecb 745 Float_t minchi2before0=kMinchi2before0;\r
746 Float_t minchi2before1=kMinchi2before1;\r
747 Float_t minchi2after0 =kMinchi2after0;\r
748 Float_t minchi2after1 =kMinchi2after1;\r
cd90f0a2 749 Double_t xrp[3]; pvertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.\r
750 Int_t maxLayer = tracker->GetNearestLayer(xrp); //I.B.\r
751 \r
752 if (array0b) for (Int_t i=0;i<5;i++){\r
753 // best track after vertex\r
754 AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);\r
755 if (!btrack) continue;\r
756 if (btrack->GetNumberOfClusters()>track0l->GetNumberOfClusters()) track0l = btrack; \r
757 // if (btrack->fX<pvertex->GetRr()-2.-0.5/(0.1+pvertex->GetAnglep()[2])) {\r
758 if (btrack->GetX()<pvertex->GetRr()-2.) {\r
759 if ( (maxLayer>i+2|| (i==0)) && btrack->GetNumberOfClusters()==(6-i)&&i<3){\r
760 Float_t sumchi2= 0;\r
761 Float_t sumn = 0;\r
762 if (maxLayer<3){ // take prim vertex as additional measurement\r
763 if (normdist[itrack0]>0 && htrackc0){\r
764 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack0]*normdist[itrack0],16.);\r
765 }else{\r
766 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack0]*normdist[itrack0]+3.),16.);\r
767 }\r
768 sumn += 3-maxLayer;\r
769 }\r
770 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
771 sumn+=1.; \r
772 if (btrack->GetClIndex(ilayer)<0){\r
767aaecb 773 sumchi2+=kAddchi2NegCl0;\r
cd90f0a2 774 continue;\r
775 }else{\r
776 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
777 for (Int_t itrack=0;itrack<4;itrack++){\r
778 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
779 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack0){\r
767aaecb 780 sumchi2+=kAddchi2SharedCl; //shared cluster\r
cd90f0a2 781 break;\r
782 }\r
783 }\r
784 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
785 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
786 }\r
787 }\r
788 sumchi2/=sumn;\r
789 if (sumchi2<minchi2before0) minchi2before0=sumchi2; \r
790 }\r
791 continue; //safety space - Geo manager will give exact layer\r
792 }\r
793 track0b = btrack;\r
794 minchi2after0 = btrack->GetNormChi2(i);\r
795 break;\r
796 }\r
797 if (array1b) for (Int_t i=0;i<5;i++){\r
798 // best track after vertex\r
799 AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);\r
800 if (!btrack) continue;\r
801 if (btrack->GetNumberOfClusters()>track1l->GetNumberOfClusters()) track1l = btrack; \r
802 // if (btrack->fX<pvertex->GetRr()-2-0.5/(0.1+pvertex->GetAnglep()[2])){\r
803 if (btrack->GetX()<pvertex->GetRr()-2){\r
804 if ((maxLayer>i+2 || (i==0))&&btrack->GetNumberOfClusters()==(6-i)&&(i<3)){\r
805 Float_t sumchi2= 0;\r
806 Float_t sumn = 0;\r
807 if (maxLayer<3){ // take prim vertex as additional measurement\r
808 if (normdist[itrack1]>0 && htrackc1){\r
809 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack1]*normdist[itrack1],16.);\r
810 }else{\r
811 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack1]*normdist[itrack1]+3.),16.);\r
812 }\r
813 sumn += 3-maxLayer;\r
814 }\r
815 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){\r
816 sumn+=1.;\r
817 if (btrack->GetClIndex(ilayer)<0){\r
767aaecb 818 sumchi2+=kAddchi2NegCl1;\r
cd90f0a2 819 continue;\r
820 }else{\r
821 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);\r
822 for (Int_t itrack=0;itrack<4;itrack++){\r
823 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);\r
824 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack1){\r
767aaecb 825 sumchi2+=kAddchi2SharedCl; //shared cluster\r
cd90f0a2 826 break;\r
827 }\r
828 }\r
829 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));\r
830 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer)); \r
831 }\r
832 }\r
833 sumchi2/=sumn;\r
834 if (sumchi2<minchi2before1) minchi2before1=sumchi2; \r
835 }\r
836 continue; //safety space - Geo manager will give exact layer \r
837 }\r
838 track1b = btrack;\r
839 minchi2after1 = btrack->GetNormChi2(i);\r
840 break;\r
841 }\r
842 //\r
843 // position resolution - used for DCA cut\r
844 Float_t sigmad = track0b->GetSigmaY2()+track0b->GetSigmaZ2()+track1b->GetSigmaY2()+track1b->GetSigmaZ2()+\r
845 (track0b->GetX()-pvertex->GetRr())*(track0b->GetX()-pvertex->GetRr())*(track0b->GetSigmaSnp2()+track0b->GetSigmaTgl2())+\r
846 (track1b->GetX()-pvertex->GetRr())*(track1b->GetX()-pvertex->GetRr())*(track1b->GetSigmaSnp2()+track1b->GetSigmaTgl2());\r
847 sigmad =TMath::Sqrt(sigmad)+0.04;\r
848 if (pvertex->GetRr()>50){\r
849 Double_t cov0[15],cov1[15];\r
850 track0b->GetESDtrack()->GetInnerExternalCovariance(cov0);\r
851 track1b->GetESDtrack()->GetInnerExternalCovariance(cov1);\r
852 sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+\r
853 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+\r
854 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);\r
855 sigmad =TMath::Sqrt(sigmad)+0.05;\r
856 }\r
857 // \r
858 AliV0 vertex2;\r
859 vertex2.SetParamN(*track0b);\r
860 vertex2.SetParamP(*track1b);\r
861 vertex2.Update(primvertex);\r
862 //Bo: if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
863 if (vertex2.GetDcaV0Daughters()<=pvertex->GetDcaV0Daughters()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){\r
864 pvertex->SetParamN(*track0b);\r
865 pvertex->SetParamP(*track1b);\r
866 pvertex->Update(primvertex);\r
867 pvertex->SetClusters(track0b->ClIndex(),track1b->ClIndex()); // register clusters\r
868 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());\r
869 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());\r
870 }\r
871 pvertex->SetDistSigma(sigmad);\r
872 //Bo: pvertex->SetDistNorm(pvertex->GetDist2()/sigmad); \r
873 pvertex->SetNormDCAPrim(normdist[itrack0],normdist[itrack1]);\r
874 //\r
875 // define likelihhod and causalities\r
876 //\r
877 Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26; \r
878 if (maxLayer<1){\r
879 Float_t fnorm0 = normdist[itrack0];\r
880 if (fnorm0<0) fnorm0*=-3;\r
881 Float_t fnorm1 = normdist[itrack1];\r
882 if (fnorm1<0) fnorm1*=-3;\r
883 if ((pvertex->GetAnglep()[2]>0.1) || ( (pvertex->GetRr()<10.5)&& pvertex->GetAnglep()[2]>0.05 ) || (pvertex->GetRr()<3)){\r
884 pb0 = TMath::Exp(-TMath::Min(fnorm0,Float_t(16.))/12.);\r
885 pb1 = TMath::Exp(-TMath::Min(fnorm1,Float_t(16.))/12.);\r
886 }\r
887 pvertex->SetChi2Before(normdist[itrack0]);\r
888 pvertex->SetChi2After(normdist[itrack1]); \r
889 pvertex->SetNAfter(0);\r
890 pvertex->SetNBefore(0);\r
891 }else{\r
892 pvertex->SetChi2Before(minchi2before0);\r
893 pvertex->SetChi2After(minchi2before1);\r
894 if (pvertex->GetAnglep()[2]>0.1 || ( pvertex->GetRr()<10.5 && pvertex->GetAnglep()[2]>0.05) || pvertex->GetRr()<3){\r
895 pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);\r
896 pb1 = TMath::Exp(-TMath::Min(minchi2before1,Float_t(16))/12.);\r
897 }\r
898 pvertex->SetNAfter(maxLayer);\r
899 pvertex->SetNBefore(maxLayer); \r
900 }\r
901 if (pvertex->GetRr()<90){\r
902 pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
903 pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));\r
904 }\r
905 if (pvertex->GetRr()<20){\r
906 pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;\r
907 pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;\r
908 }\r
909 //\r
910 pvertex->SetCausality(pb0,pb1,pa0,pa1);\r
911 //\r
912 // Likelihood calculations - apply cuts\r
913 // \r
61673d36 914 \r
915 // AM - Comment out for optimization and store the v0OK value\r
916 // Int_t v0OK = 0;\r
917 // Int_t cutOKN=0;\r
cd90f0a2 918 Bool_t v0OK = kTRUE;\r
61673d36 919\r
920\r
cd90f0a2 921 Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];\r
922 p12 += pvertex->GetParamN()->GetParameter()[4]*pvertex->GetParamN()->GetParameter()[4];\r
923 p12 = TMath::Sqrt(p12); // "mean" momenta\r
767aaecb 924\r
925 Float_t sigmap0 = kSigp0Par0+kSigp0Par1/(kSigp0Par2+pvertex->GetRr()); \r
926 Float_t sigmap = kSigpPar0*sigmap0*(kSigpPar1+kSigpPar2*p12); // "resolution: of point angle - as a function of radius and momenta\r
927\r
cd90f0a2 928\r
929 Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);\r
930 Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*\r
931 TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));\r
932 //\r
933 //Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);\r
934 Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();\r
61673d36 935 Float_t likelihood0 = (TMath::Exp(-lDistNorm)+0.1) *(pvertex->GetDcaV0Daughters()<kMaxDcaLh0)*(lDistNorm<5);\r
cd90f0a2 936\r
937 Float_t likelihood1 = TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/sigmap)+\r
938 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(4.*sigmap))+\r
939 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(8.*sigmap))+\r
940 0.1*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/0.01);\r
941 //\r
61673d36 942 if (causalityA<kCausality0Cut){\r
943 // cutOKN=1;\r
944 // v0OK += 1<<cutOKN;\r
945 v0OK = kFALSE;\r
946 }\r
947 if (TMath::Sqrt(likelihood0*likelihood1)<kLikelihood01Cut){\r
948 // cutOKN=2;\r
949 // v0OK += 1<<cutOKN;\r
950 v0OK = kFALSE;\r
951 }\r
952 if (likelihood1<kLikelihood1Cut){\r
953 // cutOKN=3;\r
954 // v0OK += 1<<cutOKN;\r
955 v0OK = kFALSE;\r
956 }\r
957 if (TMath::Power(likelihood0*likelihood1*causalityB,0.33)<kCombinedCut){\r
958 // cutOKN=4;\r
959 // v0OK += 1<<cutOKN;\r
960 v0OK = kFALSE;\r
961 }\r
cd90f0a2 962 //\r
963 //\r
767aaecb 964 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){ \r
cd90f0a2 965 Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;\r
966 cstream<<"It0"<<\r
967 "Tr0.="<<track0<< //best without constrain\r
968 "Tr1.="<<track1<< //best without constrain \r
61673d36 969 "posiKF.="<<&posiKF<< //KF from track0\r
970 "elecKF.="<<&elecKF<< //KF from track1\r
cd90f0a2 971 "Tr0B.="<<track0b<< //best without constrain after vertex\r
972 "Tr1B.="<<track1b<< //best without constrain after vertex \r
973 "Tr0C.="<<htrackc0<< //best with constrain if exist\r
974 "Tr1C.="<<htrackc1<< //best with constrain if exist\r
975 "Tr0L.="<<track0l<< //longest best \r
976 "Tr1L.="<<track1l<< //longest best\r
977 "Esd0.="<<track0->GetESDtrack()<< // esd track0 params\r
978 "Esd1.="<<track1->GetESDtrack()<< // esd track1 params\r
979 "V0.="<<pvertex<< //vertex properties\r
980 "V0b.="<<&vertex2<< //vertex properties at "best" track\r
61673d36 981 "gamKF.="<<&gamKF<< //KF from pvertex\r
982 "k0KF.="<<&k0KF<< //KF from pvertex\r
983 "lambdaKF.="<<&lambdaKF<< //KF from pvertex\r
984 "alambKF.="<<&lambdaKF<< //KF from pvertex\r
985 "gamKFchi2="<<gamKFchi2<< //Normalized chi2 from KF assuming gamma momther\r
986 "gamKFchi2C="<<gamKFchi2C<< //Normalized chi2 from KF assuming gamma mother+mass constraint\r
987 "k0KFchi2="<<k0KFchi2<< //Normalized chi2 from KF assuming K0 mother\r
988 "lambdaKFchi2="<<lambdaKFchi2<< //Normalized chi2 from KF assuming Lambda mother\r
989 "alambKFchi2="<<alambKFchi2<< //Normalized chi2 from KF assuming lambda_bar mother\r
cd90f0a2 990 "ND0="<<normdist[itrack0]<< //normalize distance for track0\r
991 "ND1="<<normdist[itrack1]<< //normalize distance for track1\r
992 "Gold="<<gold<< //\r
61673d36 993 // "RejectBase="<<rejectBase<< //rejection in First itteration\r
cd90f0a2 994 "OK="<<v0OK<<\r
995 "rmin="<<rmin<<\r
996 "sigmad="<<sigmad<<\r
61673d36 997 "Forbid0="<<forbidden[itrack0]<<\r
998 "Forbid1="<<forbidden[itrack1]<<\r
cd90f0a2 999 "\n";\r
1000 } \r
61673d36 1001 // if (rejectBase>0) continue;\r
1002 //if (forbidden[itrack0]>0 ||forbidden[itrack1]>0) continue; \r
cd90f0a2 1003 //\r
1004 pvertex->SetStatus(0);\r
1005 // if (rejectBase) {\r
1006 // pvertex->SetStatus(-100);\r
1007 //}\r
1008 if (pvertex->GetV0CosineOfPointingAngle()>kMinPointAngle2) {\r
1009 //Bo: pvertex->SetESDindexes(track0->GetESDtrack()->GetID(),track1->GetESDtrack()->GetID());\r
1010 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());//Bo: consistency 0 for neg\r
1011 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());//Bo: consistency 1 for pos\r
61673d36 1012 // if (v0OK==0){\r
cd90f0a2 1013 if (v0OK){\r
1014 // AliV0vertex vertexjuri(*track0,*track1);\r
1015 // vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());\r
1016 // event->AddV0(&vertexjuri);\r
1017 pvertex->SetStatus(100);\r
1018 }\r
1019 pvertex->SetOnFlyStatus(kTRUE);\r
1020 pvertex->ChangeMassHypothesis(kK0Short);\r
1021 event->AddV0(pvertex);\r
1022 }\r
1023 }\r
1024 }\r
1025 //\r
1026 //\r
1027 // delete temporary arrays\r
1028 // \r
1029 delete[] forbidden;\r
1030 delete[] minPointAngle;\r
1031 delete[] maxr;\r
1032 delete[] minr;\r
1033 delete[] norm;\r
1034 delete[] normdist;\r
1035 delete[] normdist1;\r
1036 delete[] normdist0;\r
1037 delete[] dist;\r
1038 delete[] itsmap;\r
1039 delete[] helixes;\r
1040 delete pvertex;\r
1041}\r
1042//------------------------------------------------------------------------\r
1043void AliITSV0Finder::RefitV02(const AliESDEvent *event,\r
1044 AliITStrackerMI *tracker) \r
1045{\r
1046 //\r
1047 //try to refit V0s in the third path of the reconstruction\r
1048 //\r
1049 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());\r
1050 //\r
1051 Int_t nv0s = event->GetNumberOfV0s();\r
1052 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};\r
1053 AliV0 v0temp;\r
1054 for (Int_t iv0 = 0; iv0<nv0s;iv0++){\r
1055 AliV0 * v0mi = (AliV0*)event->GetV0(iv0);\r
1056 if (!v0mi) continue;\r
1057 Int_t itrack0 = v0mi->GetIndex(0);\r
1058 Int_t itrack1 = v0mi->GetIndex(1);\r
1059 AliESDtrack *esd0 = event->GetTrack(itrack0);\r
1060 AliESDtrack *esd1 = event->GetTrack(itrack1);\r
1061 if (!esd0||!esd1) continue;\r
1062 AliITStrackMI tpc0(*esd0); \r
1063 AliITStrackMI tpc1(*esd1);\r
1064 Double_t x,y,z; v0mi->GetXYZ(x,y,z); //I.B. \r
1065 Double_t alpha =TMath::ATan2(y,x); //I.B.\r
1066 if (v0mi->GetRr()>85){\r
1067 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
1068 v0temp.SetParamN(tpc0);\r
1069 v0temp.SetParamP(tpc1);\r
1070 v0temp.Update(primvertex);\r
767aaecb 1071 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 1072 "V0.="<<v0mi<<\r
1073 "V0refit.="<<&v0temp<<\r
1074 "Tr0.="<<&tpc0<<\r
1075 "Tr1.="<<&tpc1<<\r
1076 "\n";\r
1077 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1078 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1079 v0mi->SetParamN(tpc0);\r
1080 v0mi->SetParamP(tpc1);\r
1081 v0mi->Update(primvertex);\r
1082 }\r
1083 }\r
1084 continue;\r
1085 }\r
1086 if (v0mi->GetRr()>35){\r
1087 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
1088 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1);\r
1089 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
1090 v0temp.SetParamN(tpc0);\r
1091 v0temp.SetParamP(tpc1);\r
1092 v0temp.Update(primvertex);\r
767aaecb 1093 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 1094 "V0.="<<v0mi<<\r
1095 "V0refit.="<<&v0temp<<\r
1096 "Tr0.="<<&tpc0<<\r
1097 "Tr1.="<<&tpc1<<\r
1098 "\n";\r
1099 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1100 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1101 v0mi->SetParamN(tpc0);\r
1102 v0mi->SetParamP(tpc1);\r
1103 v0mi->Update(primvertex);\r
1104 } \r
1105 }\r
1106 continue;\r
1107 }\r
1108 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);\r
1109 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1); \r
1110 // if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){\r
1111 if (tracker->RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) && \r
1112 tracker->RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){\r
1113 v0temp.SetParamN(tpc0);\r
1114 v0temp.SetParamP(tpc1);\r
1115 v0temp.Update(primvertex);\r
767aaecb 1116 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<\r
cd90f0a2 1117 "V0.="<<v0mi<<\r
1118 "V0refit.="<<&v0temp<<\r
1119 "Tr0.="<<&tpc0<<\r
1120 "Tr1.="<<&tpc1<<\r
1121 "\n";\r
1122 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1123 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){\r
1124 v0mi->SetParamN(tpc0);\r
1125 v0mi->SetParamP(tpc1);\r
1126 v0mi->Update(primvertex);\r
1127 } \r
1128 } \r
1129 }\r
1130}\r
1131//------------------------------------------------------------------------\r
767aaecb 1132\r
1133\r
1134AliITSV0Finder::~AliITSV0Finder()\r
1135{\r
1136 //\r
1137 //destructor\r
1138 //\r
1139 if (fDebugStreamer) {\r
1140 //fDebugStreamer->Close();\r
1141 delete fDebugStreamer;\r
1142 }\r
1143\r
1144}\r