1 /**************************************************************************
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2 * Copyright(c) 2007-2009, ALICE Experiment at CERN, All rights reserved. *
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4 * Author: The ALICE Off-line Project. *
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5 * Contributors are mentioned in the code where appropriate. *
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7 * Permission to use, copy, modify and distribute this software and its *
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8 * documentation strictly for non-commercial purposes is hereby granted *
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9 * without fee, provided that the above copyright notice appears in all *
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10 * copies and that both the copyright notice and this permission notice *
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11 * appear in the supporting documentation. The authors make no claims *
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12 * about the suitability of this software for any purpose. It is *
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13 * provided "as is" without express or implied warranty. *
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14 **************************************************************************/
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17 //-------------------------------------------------------------------------
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18 // Implementation of the on-the-fly v0 finder for ITS tracker MI
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19 // Origin: Marian Ivanov, CERN, Marian.Ivanov@cern.ch
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20 // Extraction from AliITStrackerMI: Andrea Dainese
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21 // Current support and development:
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22 //-------------------------------------------------------------------------
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24 #include <TMatrixD.h>
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26 #include <TString.h>
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27 #include <TRandom.h>
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28 #include <TTreeStream.h>
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32 #include "AliESDVertex.h"
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33 #include "AliESDEvent.h"
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34 #include "AliESDtrack.h"
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36 #include "AliHelix.h"
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37 #include "AliITSRecPoint.h"
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38 #include "AliITSReconstructor.h"
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39 #include "AliITStrackerMI.h"
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40 #include "AliITSV0Finder.h"
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41 #include "AliKFParticle.h"
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42 #include "AliKFVertex.h"
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44 ClassImp(AliITSV0Finder)
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47 AliITSV0Finder::AliITSV0Finder():
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50 //Default constructor
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52 fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
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55 //------------------------------------------------------------------------
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56 void AliITSV0Finder::UpdateTPCV0(const AliESDEvent *event,
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57 AliITStrackerMI *tracker)
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60 //try to update, or reject TPC V0s
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62 const Float_t kMinTgl2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl2();
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64 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();
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66 Int_t nv0s = event->GetNumberOfV0s();
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67 Int_t nitstracks = trackHypothesys->GetEntriesFast();
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69 for (Int_t i=0;i<nv0s;i++){
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70 AliESDv0 * vertex = event->GetV0(i);
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71 Int_t ip = vertex->GetIndex(0);
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72 Int_t im = vertex->GetIndex(1);
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74 TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)trackHypothesys->At(ip):0;
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75 TObjArray * arraym = (im<nitstracks) ? (TObjArray*)trackHypothesys->At(im):0;
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76 AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;
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77 AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;
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81 if (trackp->GetNumberOfClusters()+trackp->GetNDeadZone()>5.5){
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82 if (trackp->GetConstrain()&&trackp->GetChi2MIP(0)<3) vertex->SetStatus(-100);
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83 if (!trackp->GetConstrain()&&trackp->GetChi2MIP(0)<2) vertex->SetStatus(-100);
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88 if (trackm->GetNumberOfClusters()+trackm->GetNDeadZone()>5.5){
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89 if (trackm->GetConstrain()&&trackm->GetChi2MIP(0)<3) vertex->SetStatus(-100);
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90 if (!trackm->GetConstrain()&&trackm->GetChi2MIP(0)<2) vertex->SetStatus(-100);
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93 if (vertex->GetStatus()==-100) continue;
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95 Double_t xrp[3]; vertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
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96 Int_t clayer = tracker->GetNearestLayer(xrp); //I.B.
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97 vertex->SetNBefore(clayer); //
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98 vertex->SetChi2Before(9*clayer); //
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99 vertex->SetNAfter(6-clayer); //
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100 vertex->SetChi2After(0); //
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102 if (clayer >1 ){ // calculate chi2 before vertex
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103 Float_t chi2p = 0, chi2m=0;
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106 for (Int_t ilayer=0;ilayer<clayer;ilayer++){
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107 if (trackp->GetClIndex(ilayer)>=0){
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108 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+
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109 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));
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120 for (Int_t ilayer=0;ilayer<clayer;ilayer++){
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121 if (trackm->GetClIndex(ilayer)>=0){
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122 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+
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123 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));
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132 vertex->SetChi2Before(TMath::Min(chi2p,chi2m));
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133 if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex
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136 if (clayer < 5 ){ // calculate chi2 after vertex
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137 Float_t chi2p = 0, chi2m=0;
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139 if (trackp&&TMath::Abs(trackp->GetTgl())<kMinTgl2){
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140 for (Int_t ilayer=clayer;ilayer<6;ilayer++){
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141 if (trackp->GetClIndex(ilayer)>=0){
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142 chi2p+=trackp->GetDy(ilayer)*trackp->GetDy(ilayer)/(trackp->GetSigmaY(ilayer)*trackp->GetSigmaY(ilayer))+
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143 trackp->GetDz(ilayer)*trackp->GetDz(ilayer)/(trackp->GetSigmaZ(ilayer)*trackp->GetSigmaZ(ilayer));
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153 if (trackm&&TMath::Abs(trackm->GetTgl())<kMinTgl2){
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154 for (Int_t ilayer=clayer;ilayer<6;ilayer++){
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155 if (trackm->GetClIndex(ilayer)>=0){
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156 chi2m+=trackm->GetDy(ilayer)*trackm->GetDy(ilayer)/(trackm->GetSigmaY(ilayer)*trackm->GetSigmaY(ilayer))+
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157 trackm->GetDz(ilayer)*trackm->GetDz(ilayer)/(trackm->GetSigmaZ(ilayer)*trackm->GetSigmaZ(ilayer));
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166 vertex->SetChi2After(TMath::Max(chi2p,chi2m));
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167 if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS
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172 //------------------------------------------------------------------------
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173 void AliITSV0Finder::FindV02(AliESDEvent *event,
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174 AliITStrackerMI *tracker)
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179 // Cuts on DCA - R dependent
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180 // max distance DCA between 2 tracks cut
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181 // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);
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183 const Float_t kMaxDist0 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist0();
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184 const Float_t kMaxDist1 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist1();
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185 const Float_t kMaxDist = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDist();
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186 const Float_t kMinPointAngle = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle();
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187 const Float_t kMinPointAngle2 = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPointAngle2();
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188 const Float_t kMinR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinR();
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189 const Float_t kMaxR = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxR();
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190 const Float_t kMinPABestConst = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinPABestConst();
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191 const Float_t kMaxRBestConst = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRBestConst();
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192 const Float_t kCausality0Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCausality0Cut();
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193 const Float_t kLikelihood01Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood01Cut();
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194 const Float_t kLikelihood1Cut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetLikelihood1Cut();
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195 const Float_t kCombinedCut = AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetCombinedCut();
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196 const Float_t kMinClFullTrk= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinClFullTrk();
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197 const Float_t kMinTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl0();
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198 const Float_t kMinRTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinRTgl0();
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200 const Float_t kMinNormDistForbTgl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForbTgl0();
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201 const Float_t kMinClForb0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinClForb0();
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202 const Float_t kMinNormDistForb1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb1();
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203 const Float_t kMinNormDistForb2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb2();
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204 const Float_t kMinNormDistForb3= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb3();
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205 const Float_t kMinNormDistForb4= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb4();
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206 const Float_t kMinNormDistForb5= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinNormDistForb5();
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208 const Float_t kMinRTPCdensity= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinRTPCdensity();
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209 const Float_t kMaxRTPCdensity0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity0();
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210 const Float_t kMaxRTPCdensity10= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity10();
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211 const Float_t kMaxRTPCdensity20= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity20();
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212 const Float_t kMaxRTPCdensity30= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxRTPCdensity30();
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215 const Float_t kMinTPCdensity= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTPCdensity();
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216 const Float_t kMinTgl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinTgl1();
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218 const Float_t kMinchi2before0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before0();
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219 const Float_t kMinchi2before1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2before1();
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220 const Float_t kMinchi2after0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after0();
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221 const Float_t kMinchi2after1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMinchi2after1();
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222 const Float_t kAddchi2SharedCl= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2SharedCl();
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223 const Float_t kAddchi2NegCl0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl0();
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224 const Float_t kAddchi2NegCl1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetAddchi2NegCl1();
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226 const Float_t kSigp0Par0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par0();
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227 const Float_t kSigp0Par1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par1();
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228 const Float_t kSigp0Par2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigp0Par2();
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230 const Float_t kSigpPar0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar0();
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231 const Float_t kSigpPar1= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar1();
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232 const Float_t kSigpPar2= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetSigpPar2();
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233 const Float_t kMaxDcaLh0= AliITSReconstructor::GetRecoParam()->GetESDV0Params()->GetMaxDcaLh0();
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236 TObjArray *trackHypothesys = tracker->GetTrackHypothesys();
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237 TObjArray *bestHypothesys = tracker->GetBestHypothesys();
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238 TObjArray *originalTracks = tracker->GetOriginal();
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241 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());
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242 Int_t ntracks = event->GetNumberOfTracks();
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243 Int_t nitstracks = trackHypothesys->GetEntriesFast();
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244 originalTracks->Expand(ntracks);
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245 trackHypothesys->Expand(ntracks);
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246 bestHypothesys->Expand(ntracks);
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248 AliHelix * helixes = new AliHelix[ntracks+2];
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249 TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain
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250 TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain
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251 TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain
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252 //Change from Bool_t to Int_t for optimization
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254 // Int_t * forbidden = new Int_t [ntracks+2];
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255 Bool_t * forbidden = new Bool_t [ntracks+2];
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256 Int_t *itsmap = new Int_t [ntracks+2];
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257 Float_t *dist = new Float_t[ntracks+2];
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258 Float_t *normdist0 = new Float_t[ntracks+2];
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259 Float_t *normdist1 = new Float_t[ntracks+2];
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260 Float_t *normdist = new Float_t[ntracks+2];
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261 Float_t *norm = new Float_t[ntracks+2];
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262 Float_t *maxr = new Float_t[ntracks+2];
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263 Float_t *minr = new Float_t[ntracks+2];
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264 Float_t *minPointAngle= new Float_t[ntracks+2];
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266 AliV0 *pvertex = new AliV0;
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267 AliITStrackMI * dummy= new AliITStrackMI;
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268 dummy->SetLabel(0);
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269 AliITStrackMI trackat0; //temporary track for DCA calculation
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271 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};
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273 // make ITS - ESD map
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275 for (Int_t itrack=0;itrack<ntracks+2;itrack++) {
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276 itsmap[itrack] = -1;
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277 // forbidden[itrack] = 0;
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278 forbidden[itrack] = kFALSE;
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279 maxr[itrack] = kMaxR;
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280 minr[itrack] = kMinR;
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281 minPointAngle[itrack] = kMinPointAngle;
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283 for (Int_t itrack=0;itrack<nitstracks;itrack++){
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284 AliITStrackMI * original = (AliITStrackMI*)(originalTracks->At(itrack));
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285 Int_t esdindex = original->GetESDtrack()->GetID();
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286 itsmap[esdindex] = itrack;
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289 // create ITS tracks from ESD tracks if not done before
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291 for (Int_t itrack=0;itrack<ntracks;itrack++){
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292 if (itsmap[itrack]>=0) continue;
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293 AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));
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294 //tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());
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295 //tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ();
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296 tpctrack->GetDZ(tracker->GetX(),tracker->GetY(),tracker->GetZ(),tpctrack->GetDP()); //I.B.
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297 if (tpctrack->GetD(0)<20 && tpctrack->GetD(1)<20){
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298 // tracks which can reach inner part of ITS
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299 // propagate track to outer its volume - with correction for material
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300 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(tpctrack);
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302 itsmap[itrack] = nitstracks;
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303 originalTracks->AddAt(tpctrack,nitstracks);
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307 // fill temporary arrays
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309 for (Int_t itrack=0;itrack<ntracks;itrack++){
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310 AliESDtrack * esdtrack = event->GetTrack(itrack);
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311 Int_t itsindex = itsmap[itrack];
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312 AliITStrackMI *original = (AliITStrackMI*)originalTracks->At(itsmap[itrack]);
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313 if (!original) continue;
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314 AliITStrackMI *bestConst = 0;
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315 AliITStrackMI *bestLong = 0;
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316 AliITStrackMI *best = 0;
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319 TObjArray * array = (TObjArray*) trackHypothesys->At(itsindex);
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320 Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();
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321 // Get best track with vertex constrain
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322 for (Int_t ih=0;ih<hentries;ih++){
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323 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
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324 if (!trackh->GetConstrain()) continue;
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325 if (!bestConst) bestConst = trackh;
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326 if (trackh->GetNumberOfClusters()>kMinClFullTrk ){
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327 bestConst = trackh; // full track - with minimal chi2
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330 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()) continue;
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331 bestConst = trackh;
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334 // Get best long track without vertex constrain and best track without vertex constrain
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335 for (Int_t ih=0;ih<hentries;ih++){
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336 AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
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337 if (trackh->GetConstrain()) continue;
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338 if (!best) best = trackh;
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339 if (!bestLong) bestLong = trackh;
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340 if (trackh->GetNumberOfClusters()>kMinClFullTrk){
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341 bestLong = trackh; // full track - with minimal chi2
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344 if (trackh->GetNumberOfClusters()+trackh->GetNDeadZone()<=bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()) continue;
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345 bestLong = trackh;
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349 bestLong = original;
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351 //I.B. trackat0 = *bestLong;
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352 new (&trackat0) AliITStrackMI(*bestLong);
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353 Double_t xx,yy,zz,alpha;
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354 if (!bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz)) continue;
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357 alpha = TMath::ATan2(yy,xx);
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358 // if (!trackat0.Propagate(alpha,0)) continue;
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359 trackat0.Propagate(alpha,0); //PH The check on the return value is temporarily disabled (bug 45751)
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360 // calculate normalized distances to the vertex
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362 Float_t ptfac = (1.+100.*TMath::Abs(trackat0.GetC()));
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363 if ( bestLong->GetNumberOfClusters()>3 ){
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364 dist[itsindex] = trackat0.GetY();
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365 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());
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366 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);
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367 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));
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368 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
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370 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<6) normdist[itsindex]*=2.;
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371 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<5) normdist[itsindex]*=2.;
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372 if (bestLong->GetNumberOfClusters()+bestLong->GetNDeadZone()<4) normdist[itsindex]*=2.;
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374 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<6) normdist[itsindex]*=1.5;
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375 if (bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()<5) normdist[itsindex]*=1.5;
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379 if (bestConst&&bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>4.5){
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380 dist[itsindex] = bestConst->GetD(0);
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381 norm[itsindex] = bestConst->GetDnorm(0);
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382 normdist0[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);
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383 normdist1[itsindex] = TMath::Abs(bestConst->GetD(0)/norm[itsindex]);
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384 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
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386 dist[itsindex] = trackat0.GetY();
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387 norm[itsindex] = ptfac*TMath::Sqrt(trackat0.GetSigmaY2());
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388 normdist0[itsindex] = TMath::Abs(trackat0.GetY()/norm[itsindex]);
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389 normdist1[itsindex] = TMath::Abs((trackat0.GetZ()-primvertex[2])/(ptfac*TMath::Sqrt(trackat0.GetSigmaZ2())));
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390 normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
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391 if (TMath::Abs(trackat0.GetTgl())>kMinTgl0){
\r
392 if (normdist[itsindex]<kMinNormDistForbTgl0){
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394 // forbidden[itsindex]+=1<<forbN;
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395 forbidden[itsindex]=kTRUE;
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397 if (normdist[itsindex]>kMinNormDistForbTgl0) {
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398 minr[itsindex] = TMath::Max(kMinRTgl0,minr[itsindex]);
\r
406 //-----------------------------------------------------------
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407 //Forbid primary track candidates -
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409 //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");
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410 //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");
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411 //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");
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412 //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");
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413 //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");
\r
414 //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");
\r
415 //-----------------------------------------------------------
\r
417 if (bestLong->GetNumberOfClusters()<4 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>kMinClForb0){
\r
419 // forbidden[itsindex]+=1<<forbN;
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420 forbidden[itsindex]=kTRUE;
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422 if (normdist[itsindex]<kMinNormDistForb1 && bestConst->GetNumberOfClusters()+bestConst->GetNDeadZone()>5.5){
\r
424 // forbidden[itsindex]+=1<<forbN;
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425 forbidden[itsindex]=kTRUE;
\r
427 if (normdist[itsindex]<kMinNormDistForb2 && bestConst->GetClIndex(0)>=0 && bestConst->GetClIndex(1)>=0 ){
\r
429 // forbidden[itsindex]+=1<<forbN;
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430 forbidden[itsindex]=kTRUE;
\r
432 if (normdist[itsindex]<kMinNormDistForb3 && bestConst->GetClIndex(0)>=0){
\r
434 // forbidden[itsindex]+=1<<forbN;
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435 forbidden[itsindex]=kTRUE;
\r
437 if (normdist[itsindex]<kMinNormDistForb4 && bestConst->GetNormChi2(0)<2){
\r
439 // forbidden[itsindex]+=1<<forbN;
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440 forbidden[itsindex]=kTRUE;
\r
442 if (normdist[itsindex]<kMinNormDistForb5 && bestConst->GetNormChi2(0)<1){
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444 // forbidden[itsindex]+=1<<forbN;
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445 forbidden[itsindex]=kTRUE;
\r
447 if (bestConst->GetNormChi2(0)<2.5) {
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448 minPointAngle[itsindex]= kMinPABestConst;
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449 maxr[itsindex] = kMaxRBestConst;
\r
453 //forbid daughter kink candidates
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455 if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;
\r
456 Bool_t isElectron = kTRUE;
\r
457 Bool_t isProton = kTRUE;
\r
459 esdtrack->GetESDpid(pid);
\r
460 for (Int_t i=1;i<5;i++){
\r
461 if (pid[0]<pid[i]) isElectron= kFALSE;
\r
462 if (pid[4]<pid[i]) isProton= kFALSE;
\r
465 forbidden[itsindex]=kFALSE;
\r
466 normdist[itsindex]*=-1;
\r
469 if (normdist[itsindex]>2) forbidden[itsindex]=kFALSE;
\r
470 normdist[itsindex]*=-1;
\r
474 // Causality cuts in TPC volume
\r
476 if (esdtrack->GetTPCdensity(0,10) >kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity0),maxr[itsindex]);
\r
477 if (esdtrack->GetTPCdensity(10,30)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity10),maxr[itsindex]);
\r
478 if (esdtrack->GetTPCdensity(20,40)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity20),maxr[itsindex]);
\r
479 if (esdtrack->GetTPCdensity(30,50)>kMinTPCdensity) maxr[itsindex] = TMath::Min(Float_t(kMaxRTPCdensity30),maxr[itsindex]);
\r
481 if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->GetNumberOfClusters()<3) minr[itsindex]=kMinRTPCdensity;
\r
485 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){
\r
488 "Tr1.="<<((bestConst)? bestConst:dummy)<<
\r
489 "Tr2.="<<bestLong<<
\r
490 "Tr3.="<<&trackat0<<
\r
491 "Esd.="<<esdtrack<<
\r
492 "Dist="<<dist[itsindex]<<
\r
493 "ND0="<<normdist0[itsindex]<<
\r
494 "ND1="<<normdist1[itsindex]<<
\r
495 "ND="<<normdist[itsindex]<<
\r
496 "Pz="<<primvertex[2]<<
\r
497 "Forbid="<<forbidden[itsindex]<<
\r
501 trackarray.AddAt(best,itsindex);
\r
502 trackarrayc.AddAt(bestConst,itsindex);
\r
503 trackarrayl.AddAt(bestLong,itsindex);
\r
504 new (&helixes[itsindex]) AliHelix(*best);
\r
509 // first iterration of V0 finder
\r
511 // AM Comment out for optimization
\r
512 // Int_t rejectBase=0;
\r
515 for (Int_t iesd0=0;iesd0<ntracks;iesd0++){
\r
516 Int_t itrack0 = itsmap[iesd0];
\r
517 //-AM comment for optimization and store the forbidden value in the debug streamer
\r
518 if (forbidden[itrack0]) continue;
\r
519 AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);
\r
520 if (!btrack0) continue;
\r
521 AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);
\r
523 for (Int_t iesd1=iesd0+1;iesd1<ntracks;iesd1++){
\r
524 Int_t itrack1 = itsmap[iesd1];
\r
525 //-AM comment for optimization and store the forbidden value in the debug streamer
\r
526 if (forbidden[itrack1]) continue;
\r
528 AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1);
\r
529 if (!btrack1) continue;
\r
531 if ( (btrack0->GetSign()==btrack1->GetSign()) && !AliITSReconstructor::GetRecoParam()->GetStoreLikeSignV0s()) continue;
\r
533 Bool_t isGold = kFALSE;
\r
534 if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){
\r
538 AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);
\r
539 AliHelix &h1 = helixes[itrack0];
\r
540 AliHelix &h2 = helixes[itrack1];
\r
542 // find linear distance
\r
547 Double_t phase[2][2],radius[2];
\r
548 Int_t points = h1.GetRPHIintersections(h2, phase, radius);
\r
551 // rejectBase+=1<<cutN;
\r
554 Double_t delta[2]={1000000,1000000};
\r
556 h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);
\r
558 if (radius[1]<rmin) rmin = radius[1];
\r
559 h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);
\r
561 rmin = TMath::Sqrt(rmin);
\r
562 Double_t distance = 0;
\r
563 Double_t radiusC = 0;
\r
565 if (points==1 || delta[0]<delta[1]){
\r
566 distance = TMath::Sqrt(delta[0]);
\r
567 radiusC = TMath::Sqrt(radius[0]);
\r
569 distance = TMath::Sqrt(delta[1]);
\r
570 radiusC = TMath::Sqrt(radius[1]);
\r
573 if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])){
\r
575 //rejectBase+=1<<cutN;
\r
578 if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])){
\r
580 // rejectBase+=1<<cutN;
\r
583 Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1));
\r
584 if (distance>maxDist){
\r
586 // rejectBase+=1<<cutN;
\r
589 Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);
\r
590 if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) {
\r
592 // rejectBase+=1<<cutN;
\r
597 // Double_t distance = TestV0(h1,h2,pvertex,rmin);
\r
599 // if (distance>maxDist) continue;
\r
600 // if (pvertex->GetRr()<kMinR) continue;
\r
601 // if (pvertex->GetRr()>kMaxR) continue;
\r
602 AliITStrackMI * track0=btrack0;
\r
603 AliITStrackMI * track1=btrack1;
\r
604 // if (pvertex->GetRr()<3.5){
\r
606 //use longest tracks inside the pipe
\r
607 track0 = (AliITStrackMI*)trackarrayl.At(itrack0);
\r
608 track1 = (AliITStrackMI*)trackarrayl.At(itrack1);
\r
615 pvertex->SetParamN(*track0);
\r
616 pvertex->SetParamP(*track1);
\r
617 pvertex->Update(primvertex);
\r
618 pvertex->SetClusters(track0->ClIndex(),track1->ClIndex()); // register clusters
\r
620 // Define gamma, K0, lambda and lambda_bar from the decay particles and calculate the chi2
\r
621 AliKFVertex vertexKF;
\r
623 vertexKF.X() = tracker->GetX();
\r
624 vertexKF.Y() = tracker->GetY();
\r
625 vertexKF.Z() = tracker->GetZ();
\r
626 vertexKF.Covariance(0,0) = tracker->GetSigmaX()*tracker->GetSigmaX();
\r
627 vertexKF.Covariance(1,2) = tracker->GetSigmaY()*tracker->GetSigmaY();
\r
628 vertexKF.Covariance(2,2) = tracker->GetSigmaZ()*tracker->GetSigmaZ();
\r
630 AliKFParticle elecKF( *(pvertex->GetParamN()) ,11);
\r
631 AliKFParticle posiKF( *(pvertex->GetParamP()) ,-11);
\r
632 AliKFParticle pipKF( *(pvertex->GetParamN()) , 211);
\r
633 AliKFParticle pinKF( *(pvertex->GetParamP()) ,-211);
\r
634 AliKFParticle protKF( *(pvertex->GetParamP()) ,2212);
\r
635 AliKFParticle aproKF ( *(pvertex->GetParamN()) ,-2212);
\r
639 AliKFParticle gamKF(elecKF,posiKF);
\r
640 gamKF.SetProductionVertex(vertexKF);
\r
642 Float_t gamKFchi2 = 1000;
\r
643 if ( gamKF.GetNDF()!=0 ){
\r
644 gamKFchi2 = gamKF.GetChi2()/gamKF.GetNDF();
\r
648 Float_t sigmaMG=0.001;
\r
649 gamKF.SetMassConstraint(massG,sigmaMG);
\r
651 Float_t gamKFchi2C = 1000;
\r
652 if ( gamKF.GetNDF()!=0 ){
\r
653 gamKFchi2C = gamKF.GetChi2()/gamKF.GetNDF();
\r
657 AliKFParticle k0KF(pipKF,pinKF);
\r
658 k0KF.SetProductionVertex(vertexKF);
\r
660 Float_t k0KFchi2 = 1000;
\r
661 if ( k0KF.GetNDF()!=0 ){
\r
662 k0KFchi2 = k0KF.GetChi2()/k0KF.GetNDF();
\r
666 AliKFParticle lambdaKF(protKF,pinKF);
\r
667 lambdaKF.SetProductionVertex(vertexKF);
\r
669 Float_t lambdaKFchi2 = 1000;
\r
670 if ( lambdaKF.GetNDF()!=0 ){
\r
671 lambdaKFchi2 = lambdaKF.GetChi2()/lambdaKF.GetNDF();
\r
675 AliKFParticle alambKF(aproKF,pipKF);
\r
676 alambKF.SetProductionVertex(vertexKF);
\r
678 Float_t alambKFchi2 = 1000;
\r
679 if ( alambKF.GetNDF()!=0 ){
\r
680 alambKFchi2 = alambKF.GetChi2()/alambKF.GetNDF();
\r
687 if (pvertex->GetRr()<kMinR){
\r
689 // rejectBase+=1<<cutN;
\r
692 if (pvertex->GetRr()>kMaxR){
\r
694 // rejectBase+=1<<cutN;
\r
697 if (pvertex->GetV0CosineOfPointingAngle()<kMinPointAngle){
\r
699 // rejectBase+=1<<cutN;
\r
702 //Bo: if (pvertex->GetDist2()>maxDist) continue;
\r
704 if (pvertex->GetDcaV0Daughters()>maxDist){
\r
706 // rejectBase+=1<<cutN;
\r
709 //Bo: pvertex->SetLab(0,track0->GetLabel());
\r
710 //Bo: pvertex->SetLab(1,track1->GetLabel());
\r
711 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());
\r
712 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());
\r
714 AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy;
\r
715 AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;
\r
719 TObjArray * array0b = (TObjArray*)bestHypothesys->At(itrack0);
\r
720 if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->GetTgl())<kMinTgl1) {
\r
721 tracker->SetCurrentEsdTrack(itrack0);
\r
722 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack0),itrack0, kFALSE);
\r
724 TObjArray * array1b = (TObjArray*)bestHypothesys->At(itrack1);
\r
725 if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->GetTgl())<kMinTgl1) {
\r
726 tracker->SetCurrentEsdTrack(itrack1);
\r
727 tracker->FollowProlongationTree((AliITStrackMI*)originalTracks->At(itrack1),itrack1, kFALSE);
\r
730 AliITStrackMI * track0b = (AliITStrackMI*)originalTracks->At(itrack0);
\r
731 AliITStrackMI * track1b = (AliITStrackMI*)originalTracks->At(itrack1);
\r
732 AliITStrackMI * track0l = (AliITStrackMI*)originalTracks->At(itrack0);
\r
733 AliITStrackMI * track1l = (AliITStrackMI*)originalTracks->At(itrack1);
\r
735 Float_t minchi2before0=kMinchi2before0;
\r
736 Float_t minchi2before1=kMinchi2before1;
\r
737 Float_t minchi2after0 =kMinchi2after0;
\r
738 Float_t minchi2after1 =kMinchi2after1;
\r
739 Double_t xrp[3]; pvertex->GetXYZ(xrp[0],xrp[1],xrp[2]); //I.B.
\r
740 Int_t maxLayer = tracker->GetNearestLayer(xrp); //I.B.
\r
742 if (array0b) for (Int_t i=0;i<5;i++){
\r
743 // best track after vertex
\r
744 AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);
\r
745 if (!btrack) continue;
\r
746 if (btrack->GetNumberOfClusters()>track0l->GetNumberOfClusters()) track0l = btrack;
\r
747 // if (btrack->fX<pvertex->GetRr()-2.-0.5/(0.1+pvertex->GetAnglep()[2])) {
\r
748 if (btrack->GetX()<pvertex->GetRr()-2.) {
\r
749 if ( (maxLayer>i+2|| (i==0)) && btrack->GetNumberOfClusters()==(6-i)&&i<3){
\r
750 Float_t sumchi2= 0;
\r
752 if (maxLayer<3){ // take prim vertex as additional measurement
\r
753 if (normdist[itrack0]>0 && htrackc0){
\r
754 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack0]*normdist[itrack0],16.);
\r
756 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack0]*normdist[itrack0]+3.),16.);
\r
758 sumn += 3-maxLayer;
\r
760 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
\r
762 if (btrack->GetClIndex(ilayer)<0){
\r
763 sumchi2+=kAddchi2NegCl0;
\r
766 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);
\r
767 for (Int_t itrack=0;itrack<4;itrack++){
\r
768 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);
\r
769 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack0){
\r
770 sumchi2+=kAddchi2SharedCl; //shared cluster
\r
774 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));
\r
775 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer));
\r
779 if (sumchi2<minchi2before0) minchi2before0=sumchi2;
\r
781 continue; //safety space - Geo manager will give exact layer
\r
784 minchi2after0 = btrack->GetNormChi2(i);
\r
787 if (array1b) for (Int_t i=0;i<5;i++){
\r
788 // best track after vertex
\r
789 AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);
\r
790 if (!btrack) continue;
\r
791 if (btrack->GetNumberOfClusters()>track1l->GetNumberOfClusters()) track1l = btrack;
\r
792 // if (btrack->fX<pvertex->GetRr()-2-0.5/(0.1+pvertex->GetAnglep()[2])){
\r
793 if (btrack->GetX()<pvertex->GetRr()-2){
\r
794 if ((maxLayer>i+2 || (i==0))&&btrack->GetNumberOfClusters()==(6-i)&&(i<3)){
\r
795 Float_t sumchi2= 0;
\r
797 if (maxLayer<3){ // take prim vertex as additional measurement
\r
798 if (normdist[itrack1]>0 && htrackc1){
\r
799 sumchi2 += TMath::Min((3.-maxLayer)*normdist[itrack1]*normdist[itrack1],16.);
\r
801 sumchi2 += TMath::Min((3.-maxLayer)*(3*normdist[itrack1]*normdist[itrack1]+3.),16.);
\r
803 sumn += 3-maxLayer;
\r
805 for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
\r
807 if (btrack->GetClIndex(ilayer)<0){
\r
808 sumchi2+=kAddchi2NegCl1;
\r
811 Int_t c=( btrack->GetClIndex(ilayer) & 0x0fffffff);
\r
812 for (Int_t itrack=0;itrack<4;itrack++){
\r
813 AliITStrackerMI::AliITSlayer &layer=tracker->GetLayer(ilayer);
\r
814 if (layer.GetClusterTracks(itrack,c)>=0 && layer.GetClusterTracks(itrack,c)!=itrack1){
\r
815 sumchi2+=kAddchi2SharedCl; //shared cluster
\r
819 sumchi2+=btrack->GetDy(ilayer)*btrack->GetDy(ilayer)/(btrack->GetSigmaY(ilayer)*btrack->GetSigmaY(ilayer));
\r
820 sumchi2+=btrack->GetDz(ilayer)*btrack->GetDz(ilayer)/(btrack->GetSigmaZ(ilayer)*btrack->GetSigmaZ(ilayer));
\r
824 if (sumchi2<minchi2before1) minchi2before1=sumchi2;
\r
826 continue; //safety space - Geo manager will give exact layer
\r
829 minchi2after1 = btrack->GetNormChi2(i);
\r
833 // position resolution - used for DCA cut
\r
834 Float_t sigmad = track0b->GetSigmaY2()+track0b->GetSigmaZ2()+track1b->GetSigmaY2()+track1b->GetSigmaZ2()+
\r
835 (track0b->GetX()-pvertex->GetRr())*(track0b->GetX()-pvertex->GetRr())*(track0b->GetSigmaSnp2()+track0b->GetSigmaTgl2())+
\r
836 (track1b->GetX()-pvertex->GetRr())*(track1b->GetX()-pvertex->GetRr())*(track1b->GetSigmaSnp2()+track1b->GetSigmaTgl2());
\r
837 sigmad =TMath::Sqrt(sigmad)+0.04;
\r
838 if (pvertex->GetRr()>50){
\r
839 Double_t cov0[15],cov1[15];
\r
840 track0b->GetESDtrack()->GetInnerExternalCovariance(cov0);
\r
841 track1b->GetESDtrack()->GetInnerExternalCovariance(cov1);
\r
842 sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+
\r
843 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+
\r
844 (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);
\r
845 sigmad =TMath::Sqrt(sigmad)+0.05;
\r
849 vertex2.SetParamN(*track0b);
\r
850 vertex2.SetParamP(*track1b);
\r
851 vertex2.Update(primvertex);
\r
852 //Bo: if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){
\r
853 if (vertex2.GetDcaV0Daughters()<=pvertex->GetDcaV0Daughters()&&(vertex2.GetV0CosineOfPointingAngle()>=pvertex->GetV0CosineOfPointingAngle())){
\r
854 pvertex->SetParamN(*track0b);
\r
855 pvertex->SetParamP(*track1b);
\r
856 pvertex->Update(primvertex);
\r
857 pvertex->SetClusters(track0b->ClIndex(),track1b->ClIndex()); // register clusters
\r
858 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());
\r
859 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());
\r
861 pvertex->SetDistSigma(sigmad);
\r
862 //Bo: pvertex->SetDistNorm(pvertex->GetDist2()/sigmad);
\r
863 pvertex->SetNormDCAPrim(normdist[itrack0],normdist[itrack1]);
\r
865 // define likelihhod and causalities
\r
867 Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26;
\r
869 Float_t fnorm0 = normdist[itrack0];
\r
870 if (fnorm0<0) fnorm0*=-3;
\r
871 Float_t fnorm1 = normdist[itrack1];
\r
872 if (fnorm1<0) fnorm1*=-3;
\r
873 if ((pvertex->GetAnglep()[2]>0.1) || ( (pvertex->GetRr()<10.5)&& pvertex->GetAnglep()[2]>0.05 ) || (pvertex->GetRr()<3)){
\r
874 pb0 = TMath::Exp(-TMath::Min(fnorm0,Float_t(16.))/12.);
\r
875 pb1 = TMath::Exp(-TMath::Min(fnorm1,Float_t(16.))/12.);
\r
877 pvertex->SetChi2Before(normdist[itrack0]);
\r
878 pvertex->SetChi2After(normdist[itrack1]);
\r
879 pvertex->SetNAfter(0);
\r
880 pvertex->SetNBefore(0);
\r
882 pvertex->SetChi2Before(minchi2before0);
\r
883 pvertex->SetChi2After(minchi2before1);
\r
884 if (pvertex->GetAnglep()[2]>0.1 || ( pvertex->GetRr()<10.5 && pvertex->GetAnglep()[2]>0.05) || pvertex->GetRr()<3){
\r
885 pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);
\r
886 pb1 = TMath::Exp(-TMath::Min(minchi2before1,Float_t(16))/12.);
\r
888 pvertex->SetNAfter(maxLayer);
\r
889 pvertex->SetNBefore(maxLayer);
\r
891 if (pvertex->GetRr()<90){
\r
892 pa0 *= TMath::Min(track0->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
\r
893 pa1 *= TMath::Min(track1->GetESDtrack()->GetTPCdensity(0,60),Double_t(1.));
\r
895 if (pvertex->GetRr()<20){
\r
896 pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;
\r
897 pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;
\r
900 pvertex->SetCausality(pb0,pb1,pa0,pa1);
\r
902 // Likelihood calculations - apply cuts
\r
905 // AM - Comment out for optimization and store the v0OK value
\r
908 Bool_t v0OK = kTRUE;
\r
911 Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];
\r
912 p12 += pvertex->GetParamN()->GetParameter()[4]*pvertex->GetParamN()->GetParameter()[4];
\r
913 p12 = TMath::Sqrt(p12); // "mean" momenta
\r
915 Float_t sigmap0 = kSigp0Par0+kSigp0Par1/(kSigp0Par2+pvertex->GetRr());
\r
916 Float_t sigmap = kSigpPar0*sigmap0*(kSigpPar1+kSigpPar2*p12); // "resolution: of point angle - as a function of radius and momenta
\r
919 Float_t causalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);
\r
920 Float_t causalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Double_t(0.7))*
\r
921 TMath::Min(pvertex->GetCausalityP()[3],Double_t(0.7)));
\r
923 //Bo: Float_t likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);
\r
924 Float_t lDistNorm = pvertex->GetDcaV0Daughters()/pvertex->GetDistSigma();
\r
925 Float_t likelihood0 = (TMath::Exp(-lDistNorm)+0.1) *(pvertex->GetDcaV0Daughters()<kMaxDcaLh0)*(lDistNorm<5);
\r
927 Float_t likelihood1 = TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/sigmap)+
\r
928 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(4.*sigmap))+
\r
929 0.4*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/(8.*sigmap))+
\r
930 0.1*TMath::Exp(-(1.0001-pvertex->GetV0CosineOfPointingAngle())/0.01);
\r
932 if (causalityA<kCausality0Cut){
\r
934 // v0OK += 1<<cutOKN;
\r
937 if (TMath::Sqrt(likelihood0*likelihood1)<kLikelihood01Cut){
\r
939 // v0OK += 1<<cutOKN;
\r
942 if (likelihood1<kLikelihood1Cut){
\r
944 // v0OK += 1<<cutOKN;
\r
947 if (TMath::Power(likelihood0*likelihood1*causalityB,0.33)<kCombinedCut){
\r
949 // v0OK += 1<<cutOKN;
\r
954 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0){
\r
955 Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;
\r
957 "Tr0.="<<track0<< //best without constrain
\r
958 "Tr1.="<<track1<< //best without constrain
\r
959 "posiKF.="<<&posiKF<< //KF from track0
\r
960 "elecKF.="<<&elecKF<< //KF from track1
\r
961 "Tr0B.="<<track0b<< //best without constrain after vertex
\r
962 "Tr1B.="<<track1b<< //best without constrain after vertex
\r
963 "Tr0C.="<<htrackc0<< //best with constrain if exist
\r
964 "Tr1C.="<<htrackc1<< //best with constrain if exist
\r
965 "Tr0L.="<<track0l<< //longest best
\r
966 "Tr1L.="<<track1l<< //longest best
\r
967 "Esd0.="<<track0->GetESDtrack()<< // esd track0 params
\r
968 "Esd1.="<<track1->GetESDtrack()<< // esd track1 params
\r
969 "V0.="<<pvertex<< //vertex properties
\r
970 "V0b.="<<&vertex2<< //vertex properties at "best" track
\r
971 "gamKF.="<<&gamKF<< //KF from pvertex
\r
972 "k0KF.="<<&k0KF<< //KF from pvertex
\r
973 "lambdaKF.="<<&lambdaKF<< //KF from pvertex
\r
974 "alambKF.="<<&lambdaKF<< //KF from pvertex
\r
975 "gamKFchi2="<<gamKFchi2<< //Normalized chi2 from KF assuming gamma momther
\r
976 "gamKFchi2C="<<gamKFchi2C<< //Normalized chi2 from KF assuming gamma mother+mass constraint
\r
977 "k0KFchi2="<<k0KFchi2<< //Normalized chi2 from KF assuming K0 mother
\r
978 "lambdaKFchi2="<<lambdaKFchi2<< //Normalized chi2 from KF assuming Lambda mother
\r
979 "alambKFchi2="<<alambKFchi2<< //Normalized chi2 from KF assuming lambda_bar mother
\r
980 "ND0="<<normdist[itrack0]<< //normalize distance for track0
\r
981 "ND1="<<normdist[itrack1]<< //normalize distance for track1
\r
983 // "RejectBase="<<rejectBase<< //rejection in First itteration
\r
986 "sigmad="<<sigmad<<
\r
987 "Forbid0="<<forbidden[itrack0]<<
\r
988 "Forbid1="<<forbidden[itrack1]<<
\r
991 // if (rejectBase>0) continue;
\r
992 //if (forbidden[itrack0]>0 ||forbidden[itrack1]>0) continue;
\r
994 pvertex->SetStatus(0);
\r
995 // if (rejectBase) {
\r
996 // pvertex->SetStatus(-100);
\r
998 if (pvertex->GetV0CosineOfPointingAngle()>kMinPointAngle2) {
\r
999 //Bo: pvertex->SetESDindexes(track0->GetESDtrack()->GetID(),track1->GetESDtrack()->GetID());
\r
1000 pvertex->SetIndex(0,track0->GetESDtrack()->GetID());//Bo: consistency 0 for neg
\r
1001 pvertex->SetIndex(1,track1->GetESDtrack()->GetID());//Bo: consistency 1 for pos
\r
1004 // AliV0vertex vertexjuri(*track0,*track1);
\r
1005 // vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());
\r
1006 // event->AddV0(&vertexjuri);
\r
1007 pvertex->SetStatus(100);
\r
1009 pvertex->SetOnFlyStatus(kTRUE);
\r
1010 pvertex->ChangeMassHypothesis(kK0Short);
\r
1011 event->AddV0(pvertex);
\r
1017 // delete temporary arrays
\r
1019 delete[] forbidden;
\r
1020 delete[] minPointAngle;
\r
1024 delete[] normdist;
\r
1025 delete[] normdist1;
\r
1026 delete[] normdist0;
\r
1032 //------------------------------------------------------------------------
\r
1033 void AliITSV0Finder::RefitV02(const AliESDEvent *event,
\r
1034 AliITStrackerMI *tracker)
\r
1037 //try to refit V0s in the third path of the reconstruction
\r
1039 TTreeSRedirector &cstream = *(tracker->GetDebugStreamer());
\r
1041 Int_t nv0s = event->GetNumberOfV0s();
\r
1042 Float_t primvertex[3]={tracker->GetX(),tracker->GetY(),tracker->GetZ()};
\r
1044 for (Int_t iv0 = 0; iv0<nv0s;iv0++){
\r
1045 AliV0 * v0mi = (AliV0*)event->GetV0(iv0);
\r
1046 if (!v0mi) continue;
\r
1047 Int_t itrack0 = v0mi->GetIndex(0);
\r
1048 Int_t itrack1 = v0mi->GetIndex(1);
\r
1049 AliESDtrack *esd0 = event->GetTrack(itrack0);
\r
1050 AliESDtrack *esd1 = event->GetTrack(itrack1);
\r
1051 if (!esd0||!esd1) continue;
\r
1052 AliITStrackMI tpc0(*esd0);
\r
1053 AliITStrackMI tpc1(*esd1);
\r
1054 Double_t x,y,z; v0mi->GetXYZ(x,y,z); //I.B.
\r
1055 Double_t alpha =TMath::ATan2(y,x); //I.B.
\r
1056 if (v0mi->GetRr()>85){
\r
1057 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
\r
1058 v0temp.SetParamN(tpc0);
\r
1059 v0temp.SetParamP(tpc1);
\r
1060 v0temp.Update(primvertex);
\r
1061 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<
\r
1063 "V0refit.="<<&v0temp<<
\r
1067 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
\r
1068 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
\r
1069 v0mi->SetParamN(tpc0);
\r
1070 v0mi->SetParamP(tpc1);
\r
1071 v0mi->Update(primvertex);
\r
1076 if (v0mi->GetRr()>35){
\r
1077 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
\r
1078 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
\r
1079 if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
\r
1080 v0temp.SetParamN(tpc0);
\r
1081 v0temp.SetParamP(tpc1);
\r
1082 v0temp.Update(primvertex);
\r
1083 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<
\r
1085 "V0refit.="<<&v0temp<<
\r
1089 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
\r
1090 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
\r
1091 v0mi->SetParamN(tpc0);
\r
1092 v0mi->SetParamP(tpc1);
\r
1093 v0mi->Update(primvertex);
\r
1098 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc0);
\r
1099 AliITStrackerMI::CorrectForTPCtoITSDeadZoneMaterial(&tpc1);
\r
1100 // if (tpc0.Propagate(alpha,v0mi->GetRr())&&tpc1.Propagate(alpha,v0mi->GetRr())){
\r
1101 if (tracker->RefitAt(v0mi->GetRr(),&tpc0, v0mi->GetClusters(0)) &&
\r
1102 tracker->RefitAt(v0mi->GetRr(),&tpc1, v0mi->GetClusters(1))){
\r
1103 v0temp.SetParamN(tpc0);
\r
1104 v0temp.SetParamP(tpc1);
\r
1105 v0temp.Update(primvertex);
\r
1106 if (AliITSReconstructor::GetRecoParam()->GetESDV0Params()->StreamLevel()>0) cstream<<"Refit"<<
\r
1108 "V0refit.="<<&v0temp<<
\r
1112 //Bo: if (v0temp.GetDist2()<v0mi->GetDist2() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
\r
1113 if (v0temp.GetDcaV0Daughters()<v0mi->GetDcaV0Daughters() || v0temp.GetV0CosineOfPointingAngle()>v0mi->GetV0CosineOfPointingAngle()){
\r
1114 v0mi->SetParamN(tpc0);
\r
1115 v0mi->SetParamP(tpc1);
\r
1116 v0mi->Update(primvertex);
\r
1121 //------------------------------------------------------------------------
\r
1124 AliITSV0Finder::~AliITSV0Finder()
\r
1129 if (fDebugStreamer) {
\r
1130 //fDebugStreamer->Close();
\r
1131 delete fDebugStreamer;
\r