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[u/mrichter/AliRoot.git] / TPC / AliTPCcalibV0.cxx
index 38406571aa3ce5929aacd1d6353a44f2b2f082d5..66f220d78206936182866ef3137daf58280abaf6 100644 (file)
 #include "TCint.h"
 #include "AliTPCcalibV0.h"
 #include "AliV0.h"
-
-
+#include "TRandom.h"
+#include "TTreeStream.h"
+#include "AliTPCcalibDB.h"
+#include "AliTPCCorrection.h"
+#include "AliGRPObject.h"
+#include "AliTPCTransform.h"
+#include "AliAnalysisManager.h"
 
 
 
@@ -48,693 +53,798 @@ ClassImp(AliTPCcalibV0)
 
 AliTPCcalibV0::AliTPCcalibV0() : 
    AliTPCcalibBase(),
+   fV0Tree(0),
+   fHPTTree(0),
    fStack(0),
    fESD(0),
    fPdg(0),
    fParticles(0),
    fV0s(0),
-   fGammas(0),
-   fV0type(0),
-   fTPCdEdx(0),
-   fTPCdEdxPi(0),
-   fTPCdEdxEl(0),
-   fTPCdEdxP(0)
+   fGammas(0)
+{
+  
+}   
+AliTPCcalibV0::AliTPCcalibV0(const Text_t *name, const Text_t *title):
+   AliTPCcalibBase(),
+   fV0Tree(0),
+   fHPTTree(0),
+   fStack(0),
+   fESD(0),
+   fPdg(0),
+   fParticles(0),
+   fV0s(0),
+   fGammas(0)
 {
   fPdg = new TDatabasePDG;       
   // create output histograms
-  fTPCdEdx   = new TH2F("TPCdEdX",  "dE/dX; BetaGamma; TPC signal (a.u.)", 1000, 0.1, 10000, 300, 0, 300);
-  BinLogX(fTPCdEdx); 
-  fTPCdEdxPi = new TH2F("TPCdEdXPi","dE/dX; BetaGamma; TPC signal (a.u.)", 1000, 0.1, 10000, 300, 0, 300);
-  fTPCdEdxEl = new TH2F("TPCdEdXEl","dE/dX; BetaGamma; TPC signal (a.u.)", 1000, 0.1, 10000, 300, 0, 300);  
-  fTPCdEdxP  = new TH2F("TPCdEdXP", "dE/dX; BetaGamma; TPC signal (a.u.)", 1000, 0.1, 10000, 300, 0, 300);        
-  
-  
+  SetName(name);
+  SetTitle(title);
 }   
 
 AliTPCcalibV0::~AliTPCcalibV0(){
   //
   //
   //
+  delete fV0Tree;
+  delete fHPTTree;
 }
 
 
 
 
 
-void  AliTPCcalibV0::ProcessESD(AliESDEvent *esd, AliStack *stack){
+void  AliTPCcalibV0::ProcessESD(AliESDEvent *esd){
   //
   //
   //
   fESD = esd;
   AliKFParticle::SetField(esd->GetMagneticField());
-  MakeV0s();
-  if (stack) {
-    fStack = stack;
-    MakeMC();
-  }else{
-    fStack =0;
-  }
+  if (TMath::Abs(AliTracker::GetBz())<1) return;  
+  DumpToTree(esd);
+  DumpToTreeHPT(esd);
 }
 
-void AliTPCcalibV0::MakeMC(){
-  //
-  // MC comparison 
-  //    1. Select interesting particles
-  //    2. Assign the recosntructed particles 
+void  AliTPCcalibV0::DumpToTreeHPT(AliESDEvent *esd){
   //
-  //1. Select interesting particles
-  const Float_t kMinP   = 0.2;
-  const Float_t kMinPt  = 0.1;
-  const Float_t kMaxR   = 0.5;
-  const Float_t kMaxTan = 1.2;
-  const Float_t kMaxRad = 150;
+  // Dump V0s fith full firend information to the 
+  // 
+  if (TMath::Abs(AliTracker::GetBz())<1) return;
+  const Int_t kMinCluster=110;
+  const Float_t kMinPt   =4.;
+  AliESDfriend *esdFriend=static_cast<AliESDfriend*>(esd->FindListObject("AliESDfriend"));
+//   if (!esdFriend) {
+//     Printf("ERROR: esdFriend not available");
+//     return;
+//   }
   //
-  if (!fParticles) fParticles = new TObjArray;
-  TParticle *part=0;
-  //  
-  Int_t entries = fStack->GetNtrack();
-  for (Int_t ipart=0; ipart<entries; ipart++){
-    part = fStack->Particle(ipart);
-    if (!part) continue;
-    if (part->P()<kMinP) continue;
-    if (part->R()>kMaxR) continue;
-    if (TMath::Abs(TMath::Tan(part->Theta()-TMath::Pi()*0.5))>kMaxTan) continue;
-    Bool_t isInteresting = kFALSE;
-    if (part->GetPdgCode()==22) isInteresting =kTRUE;
-    if (part->GetPdgCode()==310) isInteresting =kTRUE;
-    if (part->GetPdgCode()==111) isInteresting =kTRUE;
-    if (TMath::Abs(part->GetPdgCode()==3122)) isInteresting =kTRUE;
+  Int_t ntracks=esd->GetNumberOfTracks();
+  for (Int_t i=0;i<ntracks;++i) {
+    Bool_t isOK=kFALSE;
+    AliESDtrack *track = esd->GetTrack(i);
+    if (track->GetTPCncls()<kMinCluster) continue;
+    if (TMath::Abs(AliTracker::GetBz())>1){ // cut on momenta if measured
+      if (track->Pt()>kMinPt) isOK=kTRUE;
+    }
+    if (TMath::Abs(AliTracker::GetBz())<1){  // require primary track for the B field OFF data
+      Bool_t isAccepted=kTRUE;
+      if (!track->IsOn(AliESDtrack::kITSrefit)) isAccepted=kFALSE;
+      if (!track->IsOn(AliESDtrack::kTPCrefit)) isAccepted=kFALSE;
+      if (!track->IsOn(AliESDtrack::kTOFout))   isAccepted=kFALSE;
+      Float_t dvertex[2],cvertex[3]; 
+      track->GetImpactParametersTPC(dvertex,cvertex);
+      if (TMath::Abs(dvertex[0]/TMath::Sqrt(cvertex[0]+0.01))>20) isAccepted=kFALSE;
+      if (TMath::Abs(dvertex[1]/TMath::Sqrt(TMath::Abs(cvertex[2]+0.01)))>20) isAccepted=kFALSE;
+      track->GetImpactParameters(dvertex,cvertex);
+      if (TMath::Abs(dvertex[0]/TMath::Sqrt(cvertex[0]+0.01))>10) isAccepted=kFALSE;
+      if (TMath::Abs(dvertex[1]/TMath::Sqrt(TMath::Abs(cvertex[2]+0.01)))>10) isAccepted=kFALSE;
+      if (!isAccepted) isOK=kFALSE;
+    } 
+    if ( track->GetTPCsignal()>100 && track->GetInnerParam()->Pt()>1 ){
+      if (track->IsOn(AliESDtrack::kITSin)||track->IsOn(AliESDtrack::kTRDout)||track->IsOn(AliESDtrack::kTOFin))
+       isOK=kTRUE;
+      if (isOK){
+       TString filename(AliAnalysisManager::GetAnalysisManager()->GetTree()->GetCurrentFile()->GetName());
+       Int_t eventNumber = esd->GetEventNumberInFile();
+       Bool_t hasFriend=(esdFriend) ? (esdFriend->GetTrack(i)!=0):0; 
+       Bool_t hasITS=(track->GetNcls(0)>2);
+       printf("DUMPIONTrack:%s|%f|%d|%d|%d\n",filename.Data(),track->GetInnerParam()->Pt()*track->GetTPCsignal()/50., eventNumber,hasFriend,hasITS);
+      }
+    }
+    if (!isOK) continue;
+    TString filename(AliAnalysisManager::GetAnalysisManager()->GetTree()->GetCurrentFile()->GetName());
+    Int_t eventNumber = esd->GetEventNumberInFile();   
+    Bool_t hasFriend=(esdFriend) ? (esdFriend->GetTrack(i)!=0):0;
+    Bool_t hasITS=(track->GetNcls(0)>2);    
+    printf("DUMPHPTTrack:%s|%f|%d|%d|%d\n",filename.Data(),track->Pt(), eventNumber,hasFriend,hasITS);
+    //
+    if (!esdFriend) continue;
+    AliESDfriendTrack *friendTrack = esdFriend->GetTrack(i);
+    if (!friendTrack) continue;
 
+    if (!isOK) continue;
     //
-    if (!isInteresting) continue;    
-    fParticles->AddLast(new TParticle(*part));
-  }
-  if (fParticles->GetEntries()<1) {
-    return;
-  }
-  //
-  //
-  //
-  Int_t sentries=fParticles->GetEntries();;
-  for (Int_t ipart=0; ipart<sentries; ipart++){
-    part = (TParticle*)fParticles->At(ipart);
-    TParticle *p0 = 0;
-    TParticle *p1 = 0;
-
-    Int_t nold =0;
-    Int_t nnew =0;
-    Int_t id0  = part->GetDaughter(0);
-    Int_t id1  = part->GetDaughter(1);    
-    if (id0>=fStack->GetNtrack() ) id0*=-1;
-    if (id1>=fStack->GetNtrack() ) id1*=-1;
-    Bool_t findable = kTRUE;
-    if (id0<0 || id1<0) findable = kFALSE;
-    Int_t charge =0; 
-    if (findable){
-      p0 = fStack->Particle(id0);
-      if (p0->R()>kMaxRad) findable = kFALSE;
-      if (p0->Pt()<kMinPt) findable = kFALSE;
-      if (p0->Vz()>250) findable= kFALSE;
-      if (TMath::Abs(TMath::Tan(p0->Theta()-TMath::Pi()*0.5))>2) findable=kFALSE;
-      if (fPdg->GetParticle(p0->GetPdgCode())==0) findable =kFALSE;
-      else
-       if (fPdg->GetParticle(p0->GetPdgCode())->Charge()==0) charge++;
-         
-      p1 = fStack->Particle(id1);
-      if (p1->R()>kMaxRad) findable = kFALSE;
-      if (p1->Pt()<kMinPt) findable = kFALSE;
-      if (TMath::Abs(p1->Vz())>250) findable= kFALSE;
-      if (TMath::Abs(TMath::Tan(p1->Theta()-TMath::Pi()*0.5))>2) findable=kFALSE;
-      if (fPdg->GetParticle(p1->GetPdgCode())==0) findable = kFALSE;
-      else
-       if (fPdg->GetParticle(p1->GetPdgCode())->Charge()==0) charge++;
-                         
+
+    TObject *calibObject;
+    AliTPCseed *seed = 0;
+    for (Int_t l=0;(calibObject=friendTrack->GetCalibObject(l));++l) {
+      if ((seed=dynamic_cast<AliTPCseed*>(calibObject))) break;
     }
-    //   (*fDebugStream)<<"MC0"<<
-    //       "P.="<<part<<
-    //       "findable="<<findable<<
-    //       "id0="<<id0<<
-    //       "id1="<<id1<<
-    //       "\n";
-    if (!findable) continue;
-    Float_t minpt = TMath::Min(p0->Pt(), p1->Pt());
-    Int_t type=-1;
-    
-    //
-    // 
-    AliKFVertex primVtx(*(fESD->GetPrimaryVertex()));
-    for (Int_t ivertex=0; ivertex<fESD->GetNumberOfV0s(); ivertex++){
-      AliESDv0 * v0 = fESD->GetV0(ivertex);
-      // select coresponding track
-      AliESDtrack * trackN = fESD->GetTrack(v0->GetIndex(0));
-      if (TMath::Abs(trackN->GetLabel())!=id0 && TMath::Abs(trackN->GetLabel())!=id1) continue;
-      AliESDtrack * trackP = fESD->GetTrack(v0->GetIndex(1));
-      if (TMath::Abs(trackP->GetLabel())!=id0 && TMath::Abs(trackP->GetLabel())!=id1) continue;
-      TParticle *pn = fStack->Particle(TMath::Abs(trackN->GetLabel()));
-      TParticle *pp = fStack->Particle(TMath::Abs(trackP->GetLabel()));
-      //
-      //
-      if ( v0->GetOnFlyStatus()) nnew++;
-      if (!v0->GetOnFlyStatus()) nold++;
-      if (part->GetPdgCode()==22 && TMath::Abs(pn->GetPdgCode())==11 &&  TMath::Abs(pp->GetPdgCode())==11) 
-       type =1;
-      if (part->GetPdgCode()==310 && TMath::Abs(pn->GetPdgCode())==211 &&  TMath::Abs(pp->GetPdgCode())==211) 
-       type =0;
-      if (part->GetPdgCode()==3122){
-       if (TMath::Abs(pn->GetPdgCode())==210 ) type=2;
-       else type=3;
-      }
-      AliKFParticle *v0kf       = Fit(primVtx,v0,pn->GetPdgCode(),pp->GetPdgCode());
-      v0kf->SetProductionVertex( primVtx );
-      AliKFParticle *v0kfc       = Fit(primVtx,v0,pn->GetPdgCode(),pp->GetPdgCode());
-      v0kfc->SetProductionVertex( primVtx );
-      v0kfc->SetMassConstraint(fPdg->GetParticle(part->GetPdgCode())->Mass());
-      Float_t chi2 = v0kf->GetChi2();
-      Float_t chi2C = v0kf->GetChi2();
-      //
+    if (!seed) continue;
+      if (!fHPTTree) {
+      fHPTTree = new TTree("HPT","HPT");
+      fHPTTree->SetDirectory(0);
+    }
+    if (fHPTTree->GetEntries()==0){
       //
-      TTreeSRedirector *cstream = GetDebugStreamer();
-      if (cstream){
-       (*cstream)<<"MCRC"<<
-         "P.="<<part<<
-         "type="<<type<<
-         "chi2="<<chi2<<
-         "chi2C="<<chi2C<<
-         "minpt="<<minpt<<
-         "id0="<<id0<<
-         "id1="<<id1<<
-         "Pn.="<<pn<<
-         "Pp.="<<pp<<
-         "tn.="<<trackN<<
-         "tp.="<<trackP<<
-         "nold.="<<nold<<
-         "nnew.="<<nnew<<
-         "v0.="<<v0<<
-         "v0kf.="<<v0kf<<
-         "v0kfc.="<<v0kfc<<
-         "\n";     
-       delete v0kf;
-       delete v0kfc; 
-       //
-      }
-      
-      if (cstream){
-       (*cstream)<<"MC"<<
-         "P.="<<part<<
-         "charge="<<charge<<
-         "type="<<type<<
-         "minpt="<<minpt<<
-         "id0="<<id0<<
-         "id1="<<id1<<
-         "P0.="<<p0<<
-         "P1.="<<p1<<
-         "nold="<<nold<<
-         "nnew="<<nnew<<
-         "\n";
-      }
+      fHPTTree->SetDirectory(0);
+      fHPTTree->Branch("t.",&track);
+      fHPTTree->Branch("ft.",&friendTrack);
+      fHPTTree->Branch("s.",&seed);
+    }else{
+      fHPTTree->SetBranchAddress("t.",&track);
+      fHPTTree->SetBranchAddress("ft.",&friendTrack);
+      fHPTTree->SetBranchAddress("s.",&seed);
     }
-    fParticles->Delete(); 
+    fHPTTree->Fill();
+    //
   }
 }
 
 
 
-void AliTPCcalibV0::MakeV0s(){
-  //
-  //
+void  AliTPCcalibV0::DumpToTree(AliESDEvent *esd){
   //
-  const Int_t kMinCluster=40;
-  const Float_t kMinR    =0;
-  if (! fV0s) fV0s = new TObjArray(10);
-  fV0s->Clear();
-  //
-  // Old V0 finder
-  //
-  for (Int_t ivertex=0; ivertex<fESD->GetNumberOfV0s(); ivertex++){
-    AliESDv0 * v0 = fESD->GetV0(ivertex);
-    if (v0->GetOnFlyStatus()) continue;
-    fV0s->AddLast(v0);
-  }
-  ProcessV0(0);
-  fV0s->Clear(0);
-  //
-  // MI V0 finder
-  //
-  for (Int_t ivertex=0; ivertex<fESD->GetNumberOfV0s(); ivertex++){
-    AliESDv0 * v0 = fESD->GetV0(ivertex);
-    if (!v0->GetOnFlyStatus()) continue;
-    fV0s->AddLast(v0);
-  }
-  ProcessV0(1);
-  fV0s->Clear();
-  return;
-  //
-  // combinatorial
+  // Dump V0s fith full firend information to the 
+  // 
+  Int_t nV0s  = fESD->GetNumberOfV0s();
+  const Int_t kMinCluster=110;
+  const Double_t kDownscale=0.01;
+  const Float_t kMinPt   =1.0;
+  const Float_t kMinMinPt   =0.7;
+  AliESDfriend *esdFriend=static_cast<AliESDfriend*>(esd->FindListObject("AliESDfriend"));
   //
-  Int_t ntracks = fESD->GetNumberOfTracks();
-  for (Int_t itrack0=0; itrack0<ntracks; itrack0++){
-    AliESDtrack * track0 = fESD->GetTrack(itrack0);
-    if (track0->GetSign()>0) continue;
-    if ( track0->GetTPCNcls()<kMinCluster) continue;
+  
+  for (Int_t ivertex=0; ivertex<nV0s; ivertex++){
+    Bool_t isOK=kFALSE;
+    AliESDv0 * v0 = (AliESDv0*) esd->GetV0(ivertex);
+    AliESDtrack * track0 = fESD->GetTrack(v0->GetIndex(0)); // negative track
+    AliESDtrack * track1 = fESD->GetTrack(v0->GetIndex(1)); // positive track 
+    if (track0->GetTPCNcls()<kMinCluster) continue;
     if (track0->GetKinkIndex(0)>0) continue;    
+    if (track1->GetTPCNcls()<kMinCluster) continue;
+    if (track1->GetKinkIndex(0)>0) continue;
+    if (v0->GetOnFlyStatus()==kFALSE) continue;
+    //
+    if (TMath::Min(track0->Pt(),track1->Pt())<kMinMinPt) continue;
+    //
+    //
+    if (TMath::Max(track0->Pt(),track1->Pt())>kMinPt) isOK=kTRUE;
+    if (gRandom->Rndm()<kDownscale) isOK=kTRUE;  
+    if (!isOK) continue;
+    //
+    TString filename(AliAnalysisManager::GetAnalysisManager()->GetTree()->GetCurrentFile()->GetName());
+    Int_t eventNumber = esd->GetEventNumberInFile();
+    Bool_t hasITS=(track0->GetNcls(0)+ track1->GetNcls(0)>4);
+    printf("DUMPHPTV0:%s|%f|%d|%d|%d\n",filename.Data(), (TMath::Min(track0->Pt(),track1->Pt())), eventNumber,(esdFriend!=0), hasITS);
+    //
+    if (!esdFriend) continue;
+    //
+    
+    //
+    AliESDfriendTrack *ftrack0 = esdFriend->GetTrack(v0->GetIndex(0));
+    if (!ftrack0) continue;
+    AliESDfriendTrack *ftrack1 = esdFriend->GetTrack(v0->GetIndex(1));
+    if (!ftrack1) continue;
     //
-    for (Int_t itrack1=0; itrack1<ntracks; itrack1++){
-      AliESDtrack * track1 = fESD->GetTrack(itrack1);
-      if (track1->GetSign()<0) continue;
-      if ( track1->GetTPCNcls()<kMinCluster) continue;
-      if (track1->GetKinkIndex(0)>0) continue;
+    TObject *calibObject;
+    AliTPCseed *seed0 = 0;
+    AliTPCseed *seed1 = 0;
+    for (Int_t l=0;(calibObject=ftrack0->GetCalibObject(l));++l) {
+      if ((seed0=dynamic_cast<AliTPCseed*>(calibObject))) break;
+    }
+    for (Int_t l=0;(calibObject=ftrack1->GetCalibObject(l));++l) {
+      if ((seed1=dynamic_cast<AliTPCseed*>(calibObject))) break;
+    }
+    if (!seed0) continue;
+    if (!seed1) continue;
+    AliExternalTrackParam * paramIn0 = (AliExternalTrackParam *)track0->GetInnerParam();
+    AliExternalTrackParam * paramIn1 = (AliExternalTrackParam *)track1->GetInnerParam();
+    if (!paramIn0) continue;
+    if (!paramIn1) continue;
+    //
+    //
+    if (!fV0Tree) {
+      fV0Tree = new TTree("V0s","V0s");
+      fV0Tree->SetDirectory(0);
+    }
+    if (fV0Tree->GetEntries()==0){
       //
-      //      AliExternalTrackParam param0(*track0);
-      // AliExternalTrackParam param1(*track1);
-      AliV0 vertex;
-      vertex.SetParamN(*track0);
-      vertex.SetParamP(*track1);
-      Float_t xyz[3];
-      xyz[0] = fESD->GetPrimaryVertex()->GetXv();
-      xyz[1] = fESD->GetPrimaryVertex()->GetYv();
-      xyz[2] = fESD->GetPrimaryVertex()->GetZv();
-      vertex.Update(xyz);
-      if (vertex.GetRr()<kMinR) continue;
-      if (vertex.GetDcaV0Daughters()>1.) continue;
-      if (vertex.GetDcaV0Daughters()>0.3*vertex.GetRr()) continue;
-      // if (vertex.GetPointAngle()<0.9) continue;
-      vertex.SetIndex(0,itrack0);
-      vertex.SetIndex(1,itrack1);      
-      fV0s->AddLast(new AliV0(vertex));
+      fV0Tree->SetDirectory(0);
+      fV0Tree->Branch("v0.",&v0);
+      fV0Tree->Branch("t0.",&track0);
+      fV0Tree->Branch("t1.",&track1);
+      fV0Tree->Branch("ft0.",&ftrack0);
+      fV0Tree->Branch("ft1.",&ftrack1);
+      fV0Tree->Branch("s0.",&seed0);
+      fV0Tree->Branch("s1.",&seed1);
+    }else{
+      fV0Tree->SetBranchAddress("v0.",&v0);
+      fV0Tree->SetBranchAddress("t0.",&track0);
+      fV0Tree->SetBranchAddress("t1.",&track1);
+      fV0Tree->SetBranchAddress("ft0.",&ftrack0);
+      fV0Tree->SetBranchAddress("ft1.",&ftrack1);
+      fV0Tree->SetBranchAddress("s0.",&seed0);
+      fV0Tree->SetBranchAddress("s1.",&seed1);
     }
+    fV0Tree->Fill();
   }
-  ProcessV0(2);
-  for (Int_t i=0;i<fV0s->GetEntries(); i++) delete fV0s->At(i);
-  fV0s->Clear();
 }
 
 
+Long64_t AliTPCcalibV0::Merge(TCollection *const li) {
 
+  TIterator* iter = li->MakeIterator();
+  AliTPCcalibV0* cal = 0;
 
+  while ((cal = (AliTPCcalibV0*)iter->Next())) {
+    if (cal->fV0Tree){
+      if (!fV0Tree) {
+       fV0Tree = new TTree("V0s","V0s");
+       fV0Tree->SetDirectory(0);
+      }
+      if (cal->fV0Tree->GetEntries()>0) AliTPCcalibV0::AddTree(cal->fV0Tree);
+      if (cal->fHPTTree->GetEntries()>0) AliTPCcalibV0::AddTreeHPT(cal->fHPTTree);
+    }    
+  }
+  return 0;
+}
 
 
-// void AliTPCcalibV0::ProcessV0(Int_t ftype){
-//   //
-//   //
-//   const Double_t ktimeK0     = 2.684;
-//   const Double_t ktimeLambda = 7.89; 
-  
-  
-//   if (! fGammas) fGammas = new TObjArray(10);
-//   fGammas->Clear();
-//   Int_t nV0s  = fV0s->GetEntries();
-//   if (nV0s==0) return;
-//   AliKFVertex primVtx(*(fESD->GetPrimaryVertex()));
-//   //
-//   for (Int_t ivertex=0; ivertex<nV0s; ivertex++){
-//     AliESDv0 * v0 = (AliESDv0*)fV0s->At(ivertex);
-//     AliESDtrack * trackN = fESD->GetTrack(v0->GetIndex(0));
-//     AliESDtrack * trackP = fESD->GetTrack(v0->GetIndex(1));
-//     // 
-//     // 
-//     //
-//     AliKFParticle *v0K0       = Fit(primVtx,v0,211,211);
-//     AliKFParticle *v0Gamma    = Fit(primVtx,v0,11,-11);
-//     AliKFParticle *v0Lambda42 = Fit(primVtx,v0,2212,211);
-//     AliKFParticle *v0Lambda24 = Fit(primVtx,v0,211,2212);
-//     //Set production vertex
-//     v0K0->SetProductionVertex( primVtx );
-//     v0Gamma->SetProductionVertex( primVtx );
-//     v0Lambda42->SetProductionVertex( primVtx );
-//     v0Lambda24->SetProductionVertex( primVtx );
-//     Double_t massK0, massGamma, massLambda42,massLambda24, massSigma;
-//     v0K0->GetMass( massK0,massSigma);
-//     v0Gamma->GetMass( massGamma,massSigma);
-//     v0Lambda42->GetMass( massLambda42,massSigma);
-//     v0Lambda24->GetMass( massLambda24,massSigma);
-//     Float_t chi2K0       = v0K0->GetChi2()/v0K0->GetNDF();
-//     Float_t chi2Gamma    = v0Gamma->GetChi2()/v0Gamma->GetNDF();
-//     Float_t chi2Lambda42 = v0Lambda42->GetChi2()/v0Lambda42->GetNDF();
-//     Float_t chi2Lambda24 = v0Lambda24->GetChi2()/v0Lambda24->GetNDF();
-//     //
-//     // Mass Contrained params
-//     //
-//     AliKFParticle *v0K0C       = Fit(primVtx,v0,211,211);
-//     AliKFParticle *v0GammaC    = Fit(primVtx,v0,11,-11);
-//     AliKFParticle *v0Lambda42C = Fit(primVtx,v0,2212,211);
-//     AliKFParticle *v0Lambda24C = Fit(primVtx,v0,211,2212);
-//     //   
-//     v0K0C->SetProductionVertex( primVtx );
-//     v0GammaC->SetProductionVertex( primVtx );
-//     v0Lambda42C->SetProductionVertex( primVtx );
-//     v0Lambda24C->SetProductionVertex( primVtx );
-
-//     v0K0C->SetMassConstraint(fPdg->GetParticle(310)->Mass());
-//     v0GammaC->SetMassConstraint(0);
-//     v0Lambda42C->SetMassConstraint(fPdg->GetParticle(3122)->Mass());
-//     v0Lambda24C->SetMassConstraint(fPdg->GetParticle(-3122)->Mass());
-//     //    
-//     Double_t timeK0, sigmaTimeK0;  
-//     Double_t timeLambda42, sigmaTimeLambda42;  
-//     Double_t timeLambda24, sigmaTimeLambda24;  
-//     v0K0C->GetLifeTime(timeK0, sigmaTimeK0);
-//     //v0K0Gamma->GetLifeTime(timeK0, sigmaTimeK0);
-//     v0Lambda42C->GetLifeTime(timeLambda42, sigmaTimeLambda42);
-//     v0Lambda24C->GetLifeTime(timeLambda24, sigmaTimeLambda24);
-    
-
-//     //
-//     Float_t chi2K0C       = v0K0C->GetChi2()/v0K0C->GetNDF();
-//     if (chi2K0C<0) chi2K0C=100;
-//     Float_t chi2GammaC    = v0GammaC->GetChi2()/v0GammaC->GetNDF();
-//     if (chi2GammaC<0) chi2GammaC=100;
-//     Float_t chi2Lambda42C = v0Lambda42C->GetChi2()/v0Lambda42C->GetNDF();
-//     if (chi2Lambda42C<0) chi2Lambda42C=100;
-//     Float_t chi2Lambda24C = v0Lambda24C->GetChi2()/v0Lambda24C->GetNDF();
-//     if (chi2Lambda24C<0) chi2Lambda24C=100;
-//     //
-//     Float_t  minChi2C=99;
-//     Int_t   type   =-1;
-//     if (chi2K0C<minChi2C) { minChi2C= chi2K0C; type=0;}
-//     if (chi2GammaC<minChi2C) { minChi2C= chi2GammaC; type=1;}
-//     if (chi2Lambda42C<minChi2C) { minChi2C= chi2Lambda42C; type=2;}
-//     if (chi2Lambda24C<minChi2C) { minChi2C= chi2Lambda24C; type=3;}
-//     Float_t  minChi2=99;
-//     Int_t   type0   =-1;
-//     if (chi2K0<minChi2) { minChi2= chi2K0; type0=0;}
-//     if (chi2Gamma<minChi2) { minChi2= chi2Gamma; type0=1;}
-//     if (chi2Lambda42<minChi2) { minChi2= chi2Lambda42; type0=2;}
-//     if (chi2Lambda24<minChi2) { minChi2= chi2Lambda24; type0=3;}
-//     Float_t betaGammaP  = trackN->GetP()/fPdg->GetParticle(-2212)->Mass(); 
-//     Float_t betaGammaPi = trackN->GetP()/fPdg->GetParticle(-211)->Mass();
-//     Float_t betaGammaEl = trackN->GetP()/fPdg->GetParticle(11)->Mass();
-//     Float_t dedxTeorP = BetheBlochAleph(betaGammaP);
-//     Float_t dedxTeorPi = BetheBlochAleph(betaGammaPi);;
-//     Float_t dedxTeorEl = BetheBlochAleph(betaGammaEl);;
-//     //
-//     //
-//     if (minChi2>50) continue;
-//     (*fDebugStream)<<"V0"<<
-//       "ftype="<<ftype<<
-//       "v0.="<<v0<<
-//       "trackN.="<<trackN<<
-//       "trackP.="<<trackP<<
-//       //
-//       "dedxTeorP="<<dedxTeorP<<
-//       "dedxTeorPi="<<dedxTeorPi<<
-//       "dedxTeorEl="<<dedxTeorEl<<
-//       //
-//       "type="<<type<<
-//       "chi2C="<<minChi2C<<
-//       "v0K0.="<<v0K0<<
-//       "v0Gamma.="<<v0Gamma<<
-//       "v0Lambda42.="<<v0Lambda42<<
-//       "v0Lambda24.="<<v0Lambda24<<
-//       //
-//       "chi20K0.="<<chi2K0<<
-//       "chi2Gamma.="<<chi2Gamma<<
-//       "chi2Lambda42.="<<chi2Lambda42<<
-//       "chi2Lambda24.="<<chi2Lambda24<<
-//       //
-//       "chi20K0c.="<<chi2K0C<<
-//       "chi2Gammac.="<<chi2GammaC<<
-//       "chi2Lambda42c.="<<chi2Lambda42C<<
-//       "chi2Lambda24c.="<<chi2Lambda24C<<
-//       //
-//       "v0K0C.="<<v0K0C<<
-//       "v0GammaC.="<<v0GammaC<<
-//       "v0Lambda42C.="<<v0Lambda42C<<
-//       "v0Lambda24C.="<<v0Lambda24C<<
-//       //
-//       "massK0="<<massK0<<
-//       "massGamma="<<massGamma<<
-//       "massLambda42="<<massLambda42<<
-//       "massLambda24="<<massLambda24<<
-//       //
-//       "timeK0="<<timeK0<<
-//       "timeLambda42="<<timeLambda42<<
-//       "timeLambda24="<<timeLambda24<<
-//       "\n";
-//     if (type==1) fGammas->AddLast(v0); 
-//     //
-//     //
-//     //
-//     delete v0K0;
-//     delete v0Gamma;
-//     delete v0Lambda42;
-//     delete v0Lambda24;    
-//     delete v0K0C;
-//     delete v0GammaC;
-//     delete v0Lambda42C;
-//     delete v0Lambda24C;    
-//   }
-//   ProcessPI0(); 
-// }
-
+void AliTPCcalibV0::AddTree(TTree * treeInput){
+  //
+  // Add the content of tree: 
+  // Notice automatic copy of tree in ROOT does not work for such complicated tree
+  //  
+  return ;
+  AliESDv0 * v0 = new AliESDv0;
+  Double_t kMinPt=0.8;
+  AliESDtrack * track0 = 0; // negative track
+  AliESDtrack * track1 = 0; // positive track 
+  AliESDfriendTrack *ftrack0 = 0;
+  AliESDfriendTrack *ftrack1 = 0;
+  AliTPCseed *seed0 = 0;
+  AliTPCseed *seed1 = 0;
+  treeInput->SetBranchStatus("ft0.",kFALSE);
+  treeInput->SetBranchStatus("ft1.",kFALSE);
+  TDatabasePDG pdg;
+  Double_t massK0= pdg.GetParticle("K0")->Mass();
+  Double_t massLambda= pdg.GetParticle("Lambda0")->Mass();
+
+  Int_t entries= treeInput->GetEntries();
+  for (Int_t i=0; i<entries; i++){
+    treeInput->SetBranchAddress("v0.",&v0);
+    treeInput->SetBranchAddress("t0.",&track0);
+    treeInput->SetBranchAddress("t1.",&track1);
+    treeInput->SetBranchAddress("ft0.",&ftrack0);
+    treeInput->SetBranchAddress("ft1.",&ftrack1);
+    treeInput->SetBranchAddress("s0.",&seed0);
+    treeInput->SetBranchAddress("s1.",&seed1);
+    if (fV0Tree->GetEntries()==0){
+      fV0Tree->SetDirectory(0);
+      fV0Tree->Branch("v0.",&v0);
+      fV0Tree->Branch("t0.",&track0);
+      fV0Tree->Branch("t1.",&track1);
+      fV0Tree->Branch("ft0.",&ftrack0);
+      fV0Tree->Branch("ft1.",&ftrack1);
+      fV0Tree->Branch("s0.",&seed0);
+      fV0Tree->Branch("s1.",&seed1);
+    }else{
+      fV0Tree->SetBranchAddress("v0.",&v0);
+      fV0Tree->SetBranchAddress("t0.",&track0);
+      fV0Tree->SetBranchAddress("t1.",&track1);
+      fV0Tree->SetBranchAddress("ft0.",&ftrack0);
+      fV0Tree->SetBranchAddress("ft1.",&ftrack1);
+      fV0Tree->SetBranchAddress("s0.",&seed0);
+      fV0Tree->SetBranchAddress("s1.",&seed1);
+    }
+    //
+    treeInput->GetEntry(i);
+    //ftrack0->GetCalibContainer()->SetOwner(kTRUE);
+    //ftrack1->GetCalibContainer()->SetOwner(kTRUE);
+    Bool_t isOK=kTRUE;
+    if (v0->GetOnFlyStatus()==kFALSE) isOK=kFALSE;
+    if (track0->GetTPCncls()<100) isOK=kFALSE;
+    if (track1->GetTPCncls()<100) isOK=kFALSE;    
+    if (TMath::Min(seed0->Pt(),seed1->Pt())<kMinPt) isOK=kFALSE;
+    if (TMath::Min(track0->Pt(),track1->Pt())<kMinPt) isOK=kFALSE;
+    Bool_t isV0=kFALSE;    
+    if (TMath::Abs(v0->GetEffMass(2,2)-massK0)<0.05)     isV0=kTRUE;
+    if (TMath::Abs(v0->GetEffMass(4,2)-massLambda)<0.05) isV0=kTRUE; 
+    if (TMath::Abs(v0->GetEffMass(2,4)-massLambda)<0.05) isV0=kTRUE;
+    if (TMath::Abs(v0->GetEffMass(0,0))<0.02) isV0=kFALSE; //reject electrons
+    if (!isV0) isOK=kFALSE;
+    if (isOK) fV0Tree->Fill();
+    delete v0;
+    delete track0;
+    delete track1;
+    delete ftrack0;
+    delete ftrack1;
+    delete seed0;
+    delete seed1;
+    v0=0;
+    track0=0;
+    track1=0;
+    ftrack0=0;
+    ftrack1=0;
+    seed0=0;
+    seed1=0;
+  }
+}
 
+void AliTPCcalibV0::AddTreeHPT(TTree * treeInput){
+  //
+  // Add the content of tree: 
+  // Notice automatic copy of tree in ROOT does not work for such complicated tree
+  //  
+  return ;
+  AliESDtrack *track = 0;
+  AliESDfriendTrack *friendTrack = 0;
+  AliTPCseed *seed = 0;
+  if (!treeInput) return;
+  if (treeInput->GetEntries()==0) return;
+  //
+  Int_t entries= treeInput->GetEntries();  
+  //
+  for (Int_t i=0; i<entries; i++){
+    track=0;
+    friendTrack=0;
+    seed=0;
+    //
+    treeInput->SetBranchAddress("t.",&track);
+    treeInput->SetBranchAddress("ft.",&friendTrack);
+    treeInput->SetBranchAddress("s.",&seed);
+    treeInput->GetEntry(i);
+    //
+    if (fHPTTree->GetEntries()==0){
+      fHPTTree->SetDirectory(0);
+      fHPTTree->Branch("t.",&track);
+      fHPTTree->Branch("ft.",&friendTrack);
+      fHPTTree->Branch("s.",&seed);
+    }else{
+      fHPTTree->SetBranchAddress("t.",&track);
+      fHPTTree->SetBranchAddress("ft.",&friendTrack);
+      fHPTTree->SetBranchAddress("s.",&seed);
+    }    
+    Bool_t isOK=kTRUE;
+    if (!track->IsOn(AliESDtrack::kITSrefit)) isOK=kFALSE;
+    if (!track->IsOn(AliESDtrack::kTOFout)) isOK=kFALSE;
+    if (isOK) fHPTTree->Fill();
+    //
+    delete track;
+    delete friendTrack;
+    delete seed;
+  }
+}
 
 
-void AliTPCcalibV0::ProcessV0(Int_t ftype){
+void AliTPCcalibV0::MakeFitTreeTrack(const TObjArray * corrArray, Double_t ptCut, Int_t /*run*/){
   //
+  // Make a fit tree
   //
-  
-  if (! fGammas) fGammas = new TObjArray(10);
-  fGammas->Clear();
-  Int_t nV0s  = fV0s->GetEntries();
-  if (nV0s==0) return;
-  AliKFVertex primVtx(*(fESD->GetPrimaryVertex()));
+  // 0. Loop over selected tracks
+  // 1. Loop over all transformation - refit the track with and without the
+  //    transformtation
+  // 2. Dump the matching paramaeters to the debugStremer
   //
-  for (Int_t ivertex=0; ivertex<nV0s; ivertex++){
-    AliESDv0 * v0 = (AliESDv0*)fV0s->At(ivertex);
-    AliESDtrack * trackN = fESD->GetTrack(v0->GetIndex(0)); // negative track
-    AliESDtrack * trackP = fESD->GetTrack(v0->GetIndex(1)); // positive track
-    
-    const AliExternalTrackParam * paramInNeg = trackN->GetInnerParam();
-    const AliExternalTrackParam * paramInPos = trackP->GetInnerParam();
   
-    if (!paramInPos) continue; // in case the inner paramters do not exist
-    if (!paramInNeg) continue;
-    // 
-    // 
+  //Connect input
+  const Int_t kMinNcl=120;
+  TFile f("TPCV0Objects.root");
+  AliTPCcalibV0 *v0TPC = (AliTPCcalibV0*) f.Get("v0TPC");
+  TTree * treeInput = v0TPC->GetHPTTree();
+  TTreeSRedirector *pcstream = new TTreeSRedirector("fitHPT.root");
+  AliESDtrack *track = 0;
+  AliESDfriendTrack *friendTrack = 0;
+  AliTPCseed *seed = 0;
+  if (!treeInput) return;
+  if (treeInput->GetEntries()==0) return;
+  //
+  treeInput->SetBranchAddress("t.",&track);
+  treeInput->SetBranchAddress("ft.",&friendTrack);
+  treeInput->SetBranchAddress("s.",&seed);
+  //
+  Int_t ncorr=0;
+  if (corrArray) ncorr = corrArray->GetEntries();
+  AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform() ;
+ //  AliTPCParam     *param     = AliTPCcalibDB::Instance()->GetParameters();
+//   AliGRPObject*  grp = AliTPCcalibDB::Instance()->GetGRP(run);
+//   Double_t time=0.5*(grp->GetTimeStart() +grp->GetTimeEnd());
+  //
+  //
+  //  
+  Int_t ntracks= treeInput->GetEntries();
+  for (Int_t itrack=0; itrack<ntracks; itrack++){
+    treeInput->GetEntry(itrack);
+    if (!track) continue;
+    if (seed->Pt()<ptCut) continue;
+    if (track->Pt()<ptCut) continue;
+    if (track->GetTPCncls()<kMinNcl) continue;
     //
-    AliKFParticle *v0K0       = Fit(primVtx,v0,-211,211);
-    AliKFParticle *v0Gamma    = Fit(primVtx,v0,11,-11);
-    AliKFParticle *v0Lambda42 = Fit(primVtx,v0,-2212,211);
-    AliKFParticle *v0Lambda24 = Fit(primVtx,v0,-211,2212);
-    //Set production vertex
-    v0K0->SetProductionVertex( primVtx );
-    v0Gamma->SetProductionVertex( primVtx );
-    v0Lambda42->SetProductionVertex( primVtx );
-    v0Lambda24->SetProductionVertex( primVtx );
-    Double_t massK0, massGamma, massLambda42,massLambda24, massSigma;
-    v0K0->GetMass( massK0,massSigma);
-    v0Gamma->GetMass( massGamma,massSigma);
-    v0Lambda42->GetMass( massLambda42,massSigma);
-    v0Lambda24->GetMass( massLambda24,massSigma);
-    Float_t chi2K0       = v0K0->GetChi2()/v0K0->GetNDF();
-    Float_t chi2Gamma    = v0Gamma->GetChi2()/v0Gamma->GetNDF();
-    Float_t chi2Lambda42 = v0Lambda42->GetChi2()/v0Lambda42->GetNDF();
-    Float_t chi2Lambda24 = v0Lambda24->GetChi2()/v0Lambda24->GetNDF();
+    // Reapply transformation
     //
-    // Mass Contrained params
+    for (Int_t irow=0; irow<159; irow++){
+      AliTPCclusterMI *cluster=seed->GetClusterPointer(irow);
+      if (cluster &&cluster->GetX()>10){
+        Double_t x0[3]={cluster->GetRow(),cluster->GetPad(),cluster->GetTimeBin()};
+        Int_t index0[1]={cluster->GetDetector()};
+        transform->Transform(x0,index0,0,1);
+        cluster->SetX(x0[0]);
+        cluster->SetY(x0[1]);
+        cluster->SetZ(x0[2]);
+        //
+      }
+    }    
     //
-    AliKFParticle *v0K0C       = Fit(primVtx,v0,-211,211);
-    AliKFParticle *v0GammaC    = Fit(primVtx,v0,11,-11);
-    AliKFParticle *v0Lambda42C = Fit(primVtx,v0,-2212,211); //lambdaBar
-    AliKFParticle *v0Lambda24C = Fit(primVtx,v0,-211,2212); //lambda
-    //   
-    v0K0C->SetProductionVertex( primVtx );
-    v0GammaC->SetProductionVertex( primVtx );
-    v0Lambda42C->SetProductionVertex( primVtx );
-    v0Lambda24C->SetProductionVertex( primVtx );
-
-    v0K0C->SetMassConstraint(fPdg->GetParticle(310)->Mass());
-    v0GammaC->SetMassConstraint(0);
-    v0Lambda42C->SetMassConstraint(fPdg->GetParticle(-3122)->Mass());
-    v0Lambda24C->SetMassConstraint(fPdg->GetParticle(3122)->Mass());
-    //    
-    Double_t timeK0, sigmaTimeK0;  
-    Double_t timeLambda42, sigmaTimeLambda42;  
-    Double_t timeLambda24, sigmaTimeLambda24;  
-    v0K0C->GetLifeTime(timeK0, sigmaTimeK0);
-    //v0K0Gamma->GetLifeTime(timeK0, sigmaTimeK0);
-    v0Lambda42C->GetLifeTime(timeLambda42, sigmaTimeLambda42);
-    v0Lambda24C->GetLifeTime(timeLambda24, sigmaTimeLambda24);
-    
+    AliExternalTrackParam* paramInner=0;
+    AliExternalTrackParam* paramOuter=0;
+    AliExternalTrackParam* paramIO=0;
+    Bool_t isOK=kTRUE;
+    for (Int_t icorr=-1; icorr<ncorr; icorr++){
+      //
+      AliTPCCorrection *corr = 0;
+      if (icorr>=0) corr = (AliTPCCorrection*)corrArray->At(icorr);
+      AliExternalTrackParam * trackInner = RefitTrack(seed, corr,85,134,0.1);      
+      AliExternalTrackParam * trackIO = RefitTrack(seed, corr,245,85,0.1);      
+      AliExternalTrackParam * trackOuter = RefitTrack(seed, corr,245,134,0.1 ); 
+      if (trackInner&&trackOuter&&trackIO){
+       trackOuter->Rotate(trackInner->GetAlpha());
+       trackOuter->PropagateTo(trackInner->GetX(),AliTracker::GetBz());
+       if (icorr<0) {
+         paramInner=trackInner;
+         paramOuter=trackOuter;
+         paramIO=trackIO;
+         paramIO->Rotate(seed->GetAlpha());
+         paramIO->PropagateTo(seed->GetX(),AliTracker::GetBz());
+       }
+      }else{
+       isOK=kFALSE;
+      }
+      
+    }
+    if (paramOuter&& paramInner) {
+      //      Bool_t isOK=kTRUE;
+      if (paramInner->GetSigmaY2()>0.01) isOK&=kFALSE;
+      if (paramOuter->GetSigmaY2()>0.01) isOK&=kFALSE;
+      if (paramInner->GetSigmaZ2()>0.01) isOK&=kFALSE;
+      if (paramOuter->GetSigmaZ2()>0.01) isOK&=kFALSE;      
+      (*pcstream)<<"fit"<<
+       "s.="<<seed<<
+       "io.="<<paramIO<<
+       "pIn.="<<paramInner<<
+       "pOut.="<<paramOuter;      
+    }
+    //
+  }
+  delete pcstream;
+  /*
+    .x ~/rootlogon.C
+    Int_t run=117112;
+    .x ../ConfigCalibTrain.C(run)
+    .L ../AddTaskTPCCalib.C
+    ConfigOCDB(run)
+    TFile fexb("../../RegisterCorrectionExB.root");
+    AliTPCComposedCorrection *cc=  (AliTPCComposedCorrection*) fexb.Get("ComposedExB");
+    cc->Init();
+    cc->Print("DA"); // Print used correction classes
+    TObjArray *array = cc->GetCorrections()
+    AliTPCcalibV0::MakeFitTreeTrack(array,2,run);
+   
+   */
+}
 
+void AliTPCcalibV0::MakeFitTreeV0(const TObjArray * corrArray, Double_t ptCut, Int_t run){
+  //
+  // Make a fit tree
+  //
+  // 0. Loop over selected tracks
+  // 1. Loop over all transformation - refit the track with and without the
+  //    transformtation
+  // 2. Dump the matching paramaeters to the debugStremer
+  //
+  
+  //Connect input
+  TFile f("TPCV0Objects.root");
+  AliTPCcalibV0 *v0TPC = (AliTPCcalibV0*) f.Get("v0TPC");
+  TTree * treeInput = v0TPC->GetV0Tree();
+  TTreeSRedirector *pcstream = new TTreeSRedirector("fitV0.root");
+  AliESDv0 *v0 = 0;
+  AliESDtrack *track0 = 0;
+  AliESDfriendTrack *friendTrack0 = 0;
+  AliTPCseed *seed0 = 0;
+  AliTPCseed *s0 = 0;
+  AliESDtrack *track1 = 0;
+  AliESDfriendTrack *friendTrack1 = 0;
+  AliTPCseed *s1 = 0;
+  AliTPCseed *seed1 = 0;
+  if (!treeInput) return;
+  if (treeInput->GetEntries()==0) return;
+  //
+  treeInput->SetBranchAddress("v0.",&v0);
+  treeInput->SetBranchAddress("t0.",&track0);
+  treeInput->SetBranchAddress("ft0.",&friendTrack0);
+  treeInput->SetBranchAddress("s0.",&s0);
+  treeInput->SetBranchAddress("t1.",&track1);
+  treeInput->SetBranchAddress("ft1.",&friendTrack1);
+  treeInput->SetBranchAddress("s1.",&s1);
+  //
+  TDatabasePDG pdg;
+  Int_t ncorr=0;
+  if (corrArray) ncorr = corrArray->GetEntries();
+  AliTPCTransform *transform = AliTPCcalibDB::Instance()->GetTransform() ;
+  Double_t massK0= pdg.GetParticle("K0")->Mass();
+  Double_t massLambda= pdg.GetParticle("Lambda0")->Mass();
+  Double_t massPion=pdg.GetParticle("pi+")->Mass();
+  Double_t massProton=pdg.GetParticle("proton")->Mass();
+  Int_t pdgPion=pdg.GetParticle("pi+")->PdgCode();
+  Int_t pdgProton=pdg.GetParticle("proton")->PdgCode();
+  Double_t rmass0=0;
+  Double_t rmass1=0;
+  Double_t massV0=0;
+  Int_t    pdg0=0;
+  Int_t    pdg1=0;
+  //
+  //
+  //  
+  Int_t nv0s= treeInput->GetEntries();
+  for (Int_t iv0=0; iv0<nv0s; iv0++){
+    Int_t  v0Type=0;
+    Int_t isK0=0;
+    Int_t isLambda=0;
+    Int_t isAntiLambda=0;
+    treeInput->GetEntry(iv0);
+    if (TMath::Abs(v0->GetEffMass(2,2)-massK0)<0.03) {isK0=1; v0Type=1;} //select K0s    
+    if (TMath::Abs(v0->GetEffMass(4,2)-massLambda)<0.01) {isLambda=1; v0Type=2;} //select Lambda   
+    if (TMath::Abs(v0->GetEffMass(2,4)-massLambda)<0.01) {isAntiLambda=1;v0Type=3;} //select Anti Lambda
+    if (isK0+isLambda+isAntiLambda!=1) continue;
+    rmass0=massPion;
+    rmass1=massPion;
+    pdg0=pdgPion;
+    pdg1=pdgPion;
+    if (isLambda) {rmass0=massProton; pdg0=pdgProton;}
+    if (isAntiLambda) {rmass1=massProton; pdg1=pdgProton;}
+    massV0=massK0;
+    if (isK0==0) massV0=massLambda;
     //
-    Float_t chi2K0C       = v0K0C->GetChi2()/v0K0C->GetNDF();
-    if (chi2K0C<0) chi2K0C=100;
-    Float_t chi2GammaC    = v0GammaC->GetChi2()/v0GammaC->GetNDF();
-    if (chi2GammaC<0) chi2GammaC=100;
-    Float_t chi2Lambda42C = v0Lambda42C->GetChi2()/v0Lambda42C->GetNDF();
-    if (chi2Lambda42C<0) chi2Lambda42C=100;
-    Float_t chi2Lambda24C = v0Lambda24C->GetChi2()/v0Lambda24C->GetNDF();
-    if (chi2Lambda24C<0) chi2Lambda24C=100;
+    if (!s0) continue;
+    seed0=(s0->GetSign()>0)?s0:s1;
+    seed1=(s0->GetSign()>0)?s1:s0;
+    if (seed0->GetZ()*seed1->GetZ()<0) continue; //remove membrane crossed tracks
+    if (seed0->Pt()<ptCut) continue;
+    if (seed1->Pt()<ptCut) continue;
     //
-    Float_t  minChi2C=99;
-    Int_t   type   =-1;
-    if (chi2K0C<minChi2C) { minChi2C= chi2K0C; type=0;}
-    if (chi2GammaC<minChi2C) { minChi2C= chi2GammaC; type=1;}
-    if (chi2Lambda42C<minChi2C) { minChi2C= chi2Lambda42C; type=2;}
-    if (chi2Lambda24C<minChi2C) { minChi2C= chi2Lambda24C; type=3;}
-    Float_t  minChi2=99;
-    Int_t   type0   =-1;
-    if (chi2K0<minChi2) { minChi2= chi2K0; type0=0;}
-    if (chi2Gamma<minChi2) { minChi2= chi2Gamma; type0=1;}
-    if (chi2Lambda42<minChi2) { minChi2= chi2Lambda42; type0=2;}
-    if (chi2Lambda24<minChi2) { minChi2= chi2Lambda24; type0=3;}
-    
-     // 0 is  negative particle; 1 is positive particle
-    Float_t betaGamma0 = 0;
-    Float_t betaGamma1 = 0;
-    
-    switch (type) {
-     case 0:
-      betaGamma0 = paramInNeg->GetP()/fPdg->GetParticle(-211)->Mass();
-      betaGamma1 = paramInPos->GetP()/fPdg->GetParticle(211)->Mass();
-      break;
-     case 1:
-      betaGamma0 = paramInNeg->GetP()/fPdg->GetParticle(11)->Mass();
-      betaGamma1 = paramInPos->GetP()/fPdg->GetParticle(-11)->Mass();
-      break;
-     case 2:
-      betaGamma0 = paramInNeg->GetP()/fPdg->GetParticle(-2212)->Mass();
-      betaGamma1 = paramInPos->GetP()/fPdg->GetParticle(211)->Mass();
-      break;
-     case 3:
-      betaGamma0 = paramInNeg->GetP()/fPdg->GetParticle(-211)->Mass();
-      betaGamma1 = paramInPos->GetP()/fPdg->GetParticle(2212)->Mass();
-      break;
-    }
-    // cuts and histogram filling
-    Int_t numCand = 0; // number of particle types which have a chi2 < 10*minChi2
-        
-    if (minChi2C < 2 && ftype == 1) {
-     //
-     if (chi2K0C < 10*minChi2C) numCand++;
-     if (chi2GammaC < 10*minChi2C) numCand++;
-     if (chi2Lambda42C < 10*minChi2C) numCand++;
-     if (chi2Lambda24C < 10*minChi2C) numCand++;
-     //
-     if (numCand < 2) {
-      if (paramInNeg->GetP() > 0.4) fTPCdEdx->Fill(betaGamma0, trackN->GetTPCsignal());
-      if (paramInPos->GetP() > 0.4) fTPCdEdx->Fill(betaGamma1, trackP->GetTPCsignal());
-     }    
-    }
-    
+    // Reapply transformation
     //
+    for  (Int_t itype=0; itype<2; itype++){
+      AliTPCseed * seed = (itype==0) ? seed0: seed1;      
+      for (Int_t irow=0; irow<159; irow++){
+       AliTPCclusterMI *cluster=seed->GetClusterPointer(irow);
+       if (cluster &&cluster->GetX()>10){
+         Double_t x0[3]={cluster->GetRow(),cluster->GetPad(),cluster->GetTimeBin()};
+         Int_t index0[1]={cluster->GetDetector()};
+         transform->Transform(x0,index0,0,1);
+         cluster->SetX(x0[0]);
+         cluster->SetY(x0[1]);
+         cluster->SetZ(x0[2]);
+         //
+       }
+      }
+    }   
+    Bool_t isOK=kTRUE;
+    Double_t radius = v0->GetRr();
+    Double_t xyz[3];
+    v0->GetXYZ(xyz[0],xyz[1],xyz[2]);
+    Double_t alpha = TMath::ATan2(xyz[1],xyz[0]);
+    TObjArray arrayV0in(ncorr+1);
+    TObjArray arrayV0io(ncorr+1);
+    TObjArray arrayT0(ncorr+1);
+    TObjArray arrayT1(ncorr+1);
+    arrayV0in.SetOwner(kTRUE);
+    arrayV0io.SetOwner(kTRUE);
     //
-    // write output tree
-    if (minChi2>50) continue;
-    TTreeSRedirector *cstream = GetDebugStreamer();
-    if (cstream){
-      (*cstream)<<"V0"<<
-       "ftype="<<ftype<<
-       "v0.="<<v0<<
-       "trackN.="<<trackN<<
-       "trackP.="<<trackP<<
-       //
-       "betaGamma0="<<betaGamma0<<
-       "betaGamma1="<<betaGamma1<<
-       //
-       "type="<<type<<
-       "chi2C="<<minChi2C<<
-       "v0K0.="<<v0K0<<
-       "v0Gamma.="<<v0Gamma<<
-       "v0Lambda42.="<<v0Lambda42<<
-       "v0Lambda24.="<<v0Lambda24<<
-       //
-       "chi20K0.="<<chi2K0<<
-       "chi2Gamma.="<<chi2Gamma<<
-       "chi2Lambda42.="<<chi2Lambda42<<
-       "chi2Lambda24.="<<chi2Lambda24<<
-       //
-       "chi20K0c.="<<chi2K0C<<
-       "chi2Gammac.="<<chi2GammaC<<
-       "chi2Lambda42c.="<<chi2Lambda42C<<
-       "chi2Lambda24c.="<<chi2Lambda24C<<
-       //
-       "v0K0C.="<<v0K0C<<
-       "v0GammaC.="<<v0GammaC<<
-       "v0Lambda42C.="<<v0Lambda42C<<
-       "v0Lambda24C.="<<v0Lambda24C<<
-       //
-       "massK0="<<massK0<<
-       "massGamma="<<massGamma<<
-       "massLambda42="<<massLambda42<<
-       "massLambda24="<<massLambda24<<
+    for (Int_t icorr=-1; icorr<ncorr; icorr++){
+      AliTPCCorrection *corr =0;
+      if (icorr>=0) corr = (AliTPCCorrection*)corrArray->At(icorr);
+      //
+      AliExternalTrackParam * trackInner0 = RefitTrack(seed0, corr,160,85,rmass0);      
+      AliExternalTrackParam * trackIO0    = RefitTrack(seed0, corr,245,85,rmass0);      
+      AliExternalTrackParam * trackInner1 = RefitTrack(seed1, corr,160,85,rmass1);      
+      AliExternalTrackParam * trackIO1    = RefitTrack(seed1, corr,245,85,rmass1);      
+      if (!trackInner0) isOK=kFALSE;
+      if (!trackInner1) isOK=kFALSE;
+      if (!trackIO0)    isOK=kFALSE;
+      if (!trackIO1)    isOK=kFALSE;
+      if (isOK){
+       if (!trackInner0->Rotate(alpha)) isOK=kFALSE;
+       if (!trackInner1->Rotate(alpha)) isOK=kFALSE;
+       if (!trackIO0->Rotate(alpha)) isOK=kFALSE;
+       if (!trackIO1->Rotate(alpha)) isOK=kFALSE;
        //
-       "timeK0="<<timeK0<<
-       "timeLambda42="<<timeLambda42<<
-       "timeLambda24="<<timeLambda24<<
-       "\n";
+       if (!AliTracker::PropagateTrackToBxByBz(trackInner0, radius, rmass0, 1, kFALSE)) isOK=kFALSE; 
+       if (!AliTracker::PropagateTrackToBxByBz(trackInner1, radius, rmass1, 1, kFALSE)) isOK=kFALSE; 
+       if (!AliTracker::PropagateTrackToBxByBz(trackIO0, radius, rmass0, 1, kFALSE)) isOK=kFALSE; 
+       if (!AliTracker::PropagateTrackToBxByBz(trackIO1, radius, rmass1, 1, kFALSE)) isOK=kFALSE; 
+       if (!isOK) continue;
+       arrayT0.AddAt(trackIO0->Clone(),icorr+1);
+       arrayT1.AddAt(trackIO1->Clone(),icorr+1);
+       Int_t charge=TMath::Nint(trackIO0->GetSign());
+       AliKFParticle pin0( *trackInner0,  pdg0*charge);
+       AliKFParticle pin1( *trackInner1, -pdg1*charge);
+       AliKFParticle pio0( *trackIO0,  pdg0*charge);
+       AliKFParticle pio1( *trackIO1, -pdg1*charge);
+       AliKFParticle v0in;
+       AliKFParticle v0io;
+       v0in+=pin0;
+       v0in+=pin1;
+       v0io+=pio0;
+       v0io+=pio1;
+       arrayV0in.AddAt(v0in.Clone(),icorr+1);
+       arrayV0io.AddAt(v0io.Clone(),icorr+1);
+      }
     }
-    if (type==1) fGammas->AddLast(v0); 
+    if (!isOK) continue;
     //
+    //AliKFParticle* pin0= (AliKFParticle*)arrayV0in.At(0);
+    AliKFParticle* pio0= (AliKFParticle*)arrayV0io.At(0);
+    AliExternalTrackParam *param0=(AliExternalTrackParam *)arrayT0.At(0);
+    AliExternalTrackParam *param1=(AliExternalTrackParam *)arrayT1.At(0);
+    Double_t mass0=0, mass0E=0; 
+    pio0->GetMass( mass0,mass0E);
     //
+    Double_t mean=mass0-massV0;
+    if (TMath::Abs(mean)>0.05) continue;
+    Double_t mass[10000];
     //
-    delete v0K0;
-    delete v0Gamma;
-    delete v0Lambda42;
-    delete v0Lambda24;    
-    delete v0K0C;
-    delete v0GammaC;
-    delete v0Lambda42C;
-    delete v0Lambda24C; 
+    Int_t dtype=30;  // id for V0
+    Int_t ptype=5;   // id for invariant mass
+    //    Int_t id=TMath::Nint(100.*(param0->Pt()-param1->Pt())/(param0->Pt()+param1->Pt()));      // K0s V0 asymetry
+    Int_t id=Int_t(1000.*(param0->Pt()-param1->Pt()));      // K0s V0 asymetry
+    Double_t gx,gy,gz, px,py,pz;
+    Double_t pt = v0->Pt();
+    v0->GetXYZ(gx,gy,gz);
+    v0->GetPxPyPz(px,py,pz);
+    Double_t theta=pz/TMath::Sqrt(px*px+py*py);
+    Double_t phi=TMath::ATan2(py,px);
+    Double_t snp=0.5*(seed0->GetSnp()+seed1->GetSnp());
+    Double_t sector=9*phi/TMath::Pi();
+    Double_t dsec=sector-TMath::Nint(sector);
+    Double_t refX=TMath::Sqrt(gx*gx+gy*gy);
+    //Int_t nentries=v0Type;
+    Double_t bz=AliTracker::GetBz();
+    Double_t dRrec=0;
+    (*pcstream)<<"fitDebug"<< 
+      "id="<<id<<
+      "v0.="<<v0<<
+      "mean="<<mean<<
+      "rms="<<mass0E<<
+      "pio0.="<<pio0<<
+      "p0.="<<param0<<
+      "p1.="<<param1;
+    (*pcstream)<<"fit"<<  // dump valus for fit
+      "run="<<run<<       //run number
+      "bz="<<bz<<         // magnetic filed used
+      "dtype="<<dtype<<   // detector match type 30
+      "ptype="<<ptype<<   // parameter type
+      "theta="<<theta<<   // theta
+      "phi="<<phi<<       // phi 
+      "snp="<<snp<<       // snp
+      "mean="<<mean<<     // mean dist value
+      "rms="<<mass0E<<       // rms
+      "sector="<<sector<<
+      "dsec="<<dsec<<
+      //
+      "refX="<<refX<<      // reference radius
+      "gx="<<gx<<         // global position
+      "gy="<<gy<<         // global position
+      "gz="<<gz<<         // global position
+      "dRrec="<<dRrec<<      // delta Radius in reconstruction
+      "pt="<<pt<<         // pt of the particle
+      "id="<<id<<     //delta of the momenta      
+      "entries="<<v0Type;//  type of the V0
+    for (Int_t icorr=0; icorr<ncorr; icorr++){
+      AliTPCCorrection *corr =0;
+      if (icorr>=0) corr = (AliTPCCorrection*)corrArray->At(icorr);
+      //      AliKFParticle* pin= (AliKFParticle*)arrayV0in.At(icorr+1);
+      AliKFParticle* pio= (AliKFParticle*)arrayV0io.At(icorr+1);
+      AliExternalTrackParam *par0=(AliExternalTrackParam *)arrayT0.At(icorr+1);
+      AliExternalTrackParam *par1=(AliExternalTrackParam *)arrayT1.At(icorr+1);
+      Double_t massE=0; 
+      pio->GetMass( mass[icorr],massE);
+      mass[icorr]-=mass0;
+      (*pcstream)<<"fit"<< 
+       Form("%s=",corr->GetName())<<mass[icorr];
+      (*pcstream)<<"fitDebug"<< 
+       Form("%s=",corr->GetName())<<mass[icorr]<<
+       Form("%sp0.=",corr->GetName())<<par0<<
+       Form("%sp1=",corr->GetName())<<par1;
+    }
+    (*pcstream)<<"fit"<< "isOK="<<isOK<<"\n";        
+    (*pcstream)<<"fitDebug"<< "isOK="<<isOK<<"\n";        
   }
-  ProcessPI0(); 
+  delete pcstream;
 }
 
-
-
-void AliTPCcalibV0::ProcessPI0(){
-  //
+AliExternalTrackParam * AliTPCcalibV0::RefitTrack(AliTPCseed *seed, AliTPCCorrection * corr, Double_t xstart, Double_t xstop, Double_t mass){
   //
-  //
-  Int_t nentries = fGammas->GetEntries();
-  if (nentries<2) return;
+  // Refit the track:
+  //    seed   - tpc track with cluster
+  //    corr   - distrotion/correction class  - apllied to the points
+  //    xstart - radius to start propagate/update
+  //    xstop  - radius to stop propagate/update
   // 
-  Double_t m0[3], m1[3];
-  AliKFVertex primVtx(*(fESD->GetPrimaryVertex()));
-  for (Int_t i0=0; i0<nentries; i0++){
-    AliESDv0 *v00 = (AliESDv0*)fGammas->At(i0); 
-    v00->GetPxPyPz (m0[0], m0[1], m0[2]);
-    AliKFParticle *p00 = Fit(primVtx, v00, 11,-11);
-    p00->SetProductionVertex( primVtx );
-    p00->SetMassConstraint(0);
-    //
-    for (Int_t i1=i0; i1<nentries; i1++){
-      AliESDv0 *v01 = (AliESDv0*)fGammas->At(i1);
-      v01->GetPxPyPz (m1[0], m1[1], m1[2]);
-      AliKFParticle *p01 = Fit(primVtx, v01, 11,-11);
-      p01->SetProductionVertex( primVtx );
-      p01->SetMassConstraint(0);
-      if (v00->GetIndex(0) != v01->GetIndex(0) && 
-         v00->GetIndex(1) != v01->GetIndex(1)){
-       AliKFParticle pi0( *p00,*p01); 
-       pi0.SetProductionVertex(primVtx);
-       Double_t n1 = TMath::Sqrt (m0[0]*m0[0] + m0[1]*m0[1] + m0[2]*m0[2]);
-        Double_t n2 = TMath::Sqrt (m1[0]*m1[0] + m1[1]*m1[1] + m1[2]*m1[2]);
-        Double_t mass = TMath::Sqrt(2.*(n1*n2 - (m0[0]*m1[0] + m0[1]*m1[1] + m0[2]*m1[2])));
-       TTreeSRedirector *cstream = GetDebugStreamer();
-       if (cstream){
-         (*cstream)<<"PI0"<<
-           "v00.="<<v00<<
-           "v01.="<<v01<<
-           "mass="<<mass<<
-           "p00.="<<p00<<
-           "p01.="<<p01<<
-           "pi0.="<<&pi0<<
-           "\n";       
-       }
-      }
-      delete p01;
+  const Double_t kResetCov=20.;
+  const Double_t kSigma=5.;
+  Double_t covar[15];
+  for (Int_t i=0;i<15;i++) covar[i]=0;
+  covar[0]=kSigma*kSigma;
+  covar[2]=kSigma*kSigma;
+  covar[5]=kSigma*kSigma/Float_t(150*150);
+  covar[9]=kSigma*kSigma/Float_t(150*150);
+  covar[14]=1*1;
+  // 
+  AliExternalTrackParam *refit  = new AliExternalTrackParam(*seed);
+  refit->PropagateTo(xstart, AliTracker::GetBz());
+  refit->AddCovariance(covar);
+  refit->ResetCovariance(kResetCov);
+  Double_t xmin = TMath::Min(xstart,xstop);
+  Double_t xmax = TMath::Max(xstart,xstop);
+  Int_t ncl=0;
+  //
+  Bool_t isOK=kTRUE;
+  for (Int_t index0=0; index0<159; index0++){
+    Int_t irow= (xstart<xstop)? index0:159-index0;
+    AliTPCclusterMI *cluster=seed->GetClusterPointer(irow);  //cluster in local system
+    if (!cluster) continue;
+    if (cluster->GetX()<xmin) continue;
+    if (cluster->GetX()>xmax) continue;
+    Double_t alpha = TMath::Pi()*(cluster->GetDetector()+0.5)/9.;
+    if (!refit->Rotate(alpha)) isOK=kFALSE;
+    Double_t x     = cluster->GetX();
+    Double_t y     = cluster->GetY();
+    Double_t z     = cluster->GetZ();
+    if (corr){      
+      Float_t xyz[3]={cluster->GetX(),cluster->GetY(),cluster->GetZ()};  // original position
+      corr->DistortPointLocal(xyz,cluster->GetDetector());
+      x=xyz[0];
+      y=xyz[1];
+      z=xyz[2];
     }
-    delete p00;
+    if (!AliTracker::PropagateTrackToBxByBz(refit, x,mass,1.,kFALSE)) isOK=kFALSE;
+    if (!isOK) continue;
+    Double_t cov[3]={0.01,0.,0.01};
+    Double_t yz[2]={y,z};
+    if (!refit->Update(yz,cov)) isOK=kFALSE;    
+    ncl++;
   }
+  if (!AliTracker::PropagateTrackToBxByBz(refit, xstop, mass,1.,kTRUE)) isOK=kFALSE;
+  //  
+  if (!isOK) {
+    delete refit;
+    return 0;
+  }  
+  return refit;
 }
 
 
 
 
 
+//
+// Obsolete part
+//
+
+
+
+
 AliKFParticle * AliTPCcalibV0::Fit(AliKFVertex & /*primVtx*/, AliESDv0 *v0, Int_t PDG1, Int_t PDG2){
   //
   // Make KF Particle
@@ -750,13 +860,6 @@ AliKFParticle * AliTPCcalibV0::Fit(AliKFVertex & /*primVtx*/, AliESDv0 *v0, Int_
   return V0;  
 }
 
-TH2F * AliTPCcalibV0::GetHistograms() {
-  //
-  //
-  //
- return fTPCdEdx;
-}
-
 
 
 
@@ -778,10 +881,80 @@ void AliTPCcalibV0::BinLogX(TH2F *h) {
      new_bins[i] = factor * new_bins[i-1];
    }
    axis->Set(bins, new_bins);
-   delete new_bins;
-   
+   delete [] new_bins;   
 }
 
 
 
-
+void AliTPCcalibV0::FilterV0s(AliESDEvent* event){
+  //
+  // 
+  TDatabasePDG pdg;  
+  const Double_t kChi2Cut=20;
+  const Double_t kMinR=2;
+  const Double_t ptCut=0.2;
+  const Int_t kMinNcl=110;
+  //
+  Int_t nv0 = event->GetNumberOfV0s(); 
+  AliESDVertex *vertex= (AliESDVertex *)event->GetPrimaryVertex();
+  AliKFVertex kfvertex=*vertex;
+  //
+  for (Int_t iv0=0;iv0<nv0;iv0++){
+    AliESDv0 *v0 = event->GetV0(iv0);
+    if (!v0) continue;
+    if (v0->GetPindex()<0) continue;
+    if (v0->GetNindex()<0) continue;
+    if (TMath::Max(v0->GetPindex(), v0->GetNindex())>event->GetNumberOfTracks()) continue;
+    //
+    //   
+    AliExternalTrackParam pp=(v0->GetParamP()->GetSign()>0) ? (*(v0->GetParamP())):(*(v0->GetParamN()));
+    AliExternalTrackParam pn=(v0->GetParamP()->GetSign()>0) ? (*(v0->GetParamN())):(*(v0->GetParamP()));
+    AliKFParticle kfp1( pp, 211 );
+    AliKFParticle kfp2( pn, -211 );
+    AliKFParticle *v0KFK0 = new AliKFParticle(kfp1,kfp2);
+    AliKFParticle *v0KFK0CV = new AliKFParticle(*v0KFK0);
+    v0KFK0CV->SetProductionVertex(kfvertex);
+    v0KFK0CV->TransportToProductionVertex();
+    AliKFParticle *v0KFK0CVM = new AliKFParticle(*v0KFK0CV);
+    v0KFK0CVM->SetMassConstraint(pdg.GetParticle("K_S0")->Mass());
+    Double_t chi2K0 = v0KFK0CV->GetChi2();
+    Double_t chi2K0M= v0KFK0CVM->GetChi2();    
+    Double_t massK0=v0KFK0CV->GetMass();
+    if (chi2K0>kChi2Cut) continue;
+    if (v0->GetRr()>kMinR) continue;
+    //
+    Double_t maxPt = TMath::Max(v0->GetParamP()->Pt(), v0->GetParamN()->Pt());
+    Double_t effMass22=v0->GetEffMass(2,2);
+    Double_t effMass42=v0->GetEffMass(4,2);
+    Double_t effMass24=v0->GetEffMass(2,4);
+    Bool_t isV0= kFALSE;
+    isV0|=TMath::Abs(effMass22-pdg.GetParticle("K_S0")->Mass())<0.1;
+    isV0|=TMath::Abs(effMass42-pdg.GetParticle("Lambda0")->Mass())<0.1;
+    isV0|=TMath::Abs(effMass24-pdg.GetParticle("Lambda0")->Mass())<0.1;
+
+    Double_t sign= v0->GetParamP()->GetSign()* v0->GetParamN()->GetSign();
+    if (sign<0&&v0->GetOnFlyStatus()>0.5&&maxPt>ptCut&&isV0){
+      AliESDtrack * trackP = event->GetTrack(v0->GetPindex());
+      AliESDtrack * trackN = event->GetTrack(v0->GetNindex());
+      if (!trackN) continue;
+      if (!trackP) continue;
+      Int_t nclP= (Int_t)trackP->GetTPCClusterInfo(2,1);
+      Int_t nclN= (Int_t)trackN->GetTPCClusterInfo(2,1);
+      if (TMath::Min(nclP,nclN)<kMinNcl) continue;
+      Double_t eta = TMath::Max(TMath::Abs(trackP->Eta()), TMath::Abs(trackN->Eta()));
+      Double_t ncls = TMath::Min(TMath::Abs(trackP->GetNcls(0)), TMath::Abs(trackN->GetNcls(0)));
+      if (eta<0.8&&ncls>2){
+       //      printf("%d\t%f\t%f\t%d\t%d\t%f\t%f\n",i, v0->Pt(), maxPt, v0->GetNindex(),v0->GetPindex(),v0->GetRr(),effMass22);       
+       (*fDebugStreamer)<<"v0tree"<<
+         "v0.="<<v0<<
+         "tp.="<<trackP<<
+         "tm.="<<trackN<<
+         //
+         "v.="<<vertex<<
+         "ncls="<<ncls<<
+         "maxPt="<<maxPt<<
+         "\n";        
+      }
+    }
+  }
+}