for (Int_t i=0;i<100000;i++){
fBestTrackIndex[i]=0;
}
+ //
+ fDebugStreamer = new TTreeSRedirector("ITSdebug.root");
+
}
AliITStrackerMI::~AliITStrackerMI()
//destructor
//
if (fCoeficients) delete []fCoeficients;
+ if (fDebugStreamer) {
+ //fDebugStreamer->Close();
+ delete fDebugStreamer;
+ }
}
void AliITStrackerMI::SetLayersNotToSkip(Int_t *l) {
//--------------------------------------------------------------------
TObjArray itsTracks(15000);
fOriginal.Clear();
+ fEsd = event; // store pointer to the esd
{/* Read ESD tracks */
Int_t nentr=event->GetNumberOfTracks();
Info("Clusters2Tracks", "Number of ESD tracks: %d\n", nentr);
// write expected q
t->fExpQ = TMath::Max(0.8*t->fESDtrack->GetTPCsignal(),30.);
- if (TMath::Abs(t->fD[0])>10) {
- delete t;
- continue;
- }
-
- if (TMath::Abs(vdist)>20) {
- delete t;
- continue;
- }
- if (TMath::Abs(1/t->Get1Pt())<0.120) {
- delete t;
- continue;
+ if (esd->GetV0Index(0)>0 && t->fD[0]<30){
+ //track - can be V0 according to TPC
}
-
- if (CorrectForDeadZoneMaterial(t)!=0) {
- //Warning("Clusters2Tracks",
- // "failed to correct for the material in the dead zone !\n");
- delete t;
- continue;
+ else{
+ if (TMath::Abs(t->fD[0])>10) {
+ delete t;
+ continue;
+ }
+
+ if (TMath::Abs(vdist)>20) {
+ delete t;
+ continue;
+ }
+ if (TMath::Abs(1/t->Get1Pt())<0.120) {
+ delete t;
+ continue;
+ }
+
+ if (CorrectForDeadZoneMaterial(t)!=0) {
+ //Warning("Clusters2Tracks",
+ // "failed to correct for the material in the dead zone !\n");
+ delete t;
+ continue;
+ }
}
t->fReconstructed = kFALSE;
itsTracks.AddLast(t);
fOriginal.Sort();
Int_t nentr=itsTracks.GetEntriesFast();
fTrackHypothesys.Expand(nentr);
+ fBestHypothesys.Expand(nentr);
MakeCoeficients(nentr);
Int_t ntrk=0;
for (fPass=0; fPass<2; fPass++) {
fI = 6;
ResetTrackToFollow(*t);
ResetBestTrack();
-
- FollowProlongationTree(t,i);
-
+ FollowProlongationTree(t,i,fConstraint[fPass]);
SortTrackHypothesys(fCurrentEsdTrack,20,0); //MI change
//
}
//GetBestHypothesysMIP(itsTracks);
- FindV0(event);
+ UpdateTPCV0(event);
+ FindV02(event);
fAfterV0 = kTRUE;
//GetBestHypothesysMIP(itsTracks);
//
}
fTrackHypothesys.Delete();
+ fBestHypothesys.Delete();
fOriginal.Clear();
delete []fCoeficients;
fCoeficients=0;
if (fTrackToFollow.Propagate(fv+a,xv)) {
fTrackToFollow.UpdateESDtrack(AliESDtrack::kITSrefit);
- Float_t d=fTrackToFollow.GetD(GetX(),GetY());
- Float_t z=fTrackToFollow.GetZ()-GetZ();
- fTrackToFollow.GetESDtrack()->SetImpactParameters(d,z);
//UseClusters(&fTrackToFollow);
{
AliITSclusterV2 c; c.SetY(yv); c.SetZ(GetZ());
}
-void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex)
+void AliITStrackerMI::FollowProlongationTree(AliITStrackMI * otrack, Int_t esdindex, Bool_t constrain)
{
//--------------------------------------------------------------------
// Follow prolongation tree
//--------------------------------------------------------------------
+ //
+ AliESDtrack * esd = otrack->fESDtrack;
+ if (esd->GetV0Index(0)>0){
+ //
+ // TEMPORARY SOLLUTION: map V0 indexes to point to proper track
+ // mapping of esd track is different as its track in Containers
+ // Need something more stable
+ // Indexes are set back againg to the ESD track indexes in UpdateTPCV0
+ for (Int_t i=0;i<3;i++){
+ Int_t index = esd->GetV0Index(i);
+ if (index==0) break;
+ AliESDV0MI * vertex = fEsd->GetV0MI(index);
+ if (vertex->GetStatus()<0) continue; // rejected V0
+ //
+ if (esd->GetSign()>0) {
+ vertex->SetIndex(0,esdindex);
+ }
+ else{
+ vertex->SetIndex(1,esdindex);
+ }
+ }
+ }
+ TObjArray *bestarray = (TObjArray*)fBestHypothesys.At(esdindex);
+ if (!bestarray){
+ bestarray = new TObjArray(5);
+ fBestHypothesys.AddAt(bestarray,esdindex);
+ }
+ //
//setup tree of the prolongations
//
static AliITStrackMI tracks[7][100];
otrack->fNSkipped=0;
new (&(tracks[6][0])) AliITStrackMI(*otrack);
ntracks[6]=1;
- nindexes[6][0]=0;
+ for (Int_t i=0;i<7;i++) nindexes[i][0]=0;
//
//
// follow prolongations
//
Double_t msz=1./((currenttrack1.GetSigmaZ2() + 16.*kSigmaZ2[ilayer]));
Double_t msy=1./((currenttrack1.GetSigmaY2() + 16.*kSigmaY2[ilayer]));
- if (fConstraint[fPass]){
+ if (constrain){
msy/=60; msz/=60.;
}
else{
Double_t x0;
Double_t d=layer.GetThickness(updatetrack->GetY(),updatetrack->GetZ(),x0);
updatetrack->CorrectForMaterial(d,x0);
- if (fConstraint[fPass]) {
- updatetrack->fConstrain = fConstraint[fPass];
+ if (constrain) {
+ updatetrack->fConstrain = constrain;
fI = ilayer;
Double_t d=GetEffectiveThickness(0,0); //Think of this !!!!
Double_t xyz[]={GetX(),GetY(),GetZ()};
ntracks[ilayer]++;
} // create new hypothesy
} // loop over possible cluster prolongation
- // if (fConstraint[fPass]&&itrack<2&¤ttrack1.fNSkipped==0 && deadzone==0){
- if (fConstraint[fPass]&&itrack<2&¤ttrack1.fNSkipped==0 && deadzone==0&&ntracks[ilayer]<100){
+ // if (constrain&&itrack<2&¤ttrack1.fNSkipped==0 && deadzone==0){
+ if (constrain&&itrack<2&¤ttrack1.fNSkipped==0 && deadzone==0&&ntracks[ilayer]<100){
AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
vtrack->fClIndex[ilayer]=0;
fI = ilayer;
ntracks[ilayer]++;
}
- if (fConstraint[fPass]&&itrack<1&&TMath::Abs(currenttrack1.fP3)>1.1){ //big theta -- for low mult. runs
+ if (constrain&&itrack<1&&TMath::Abs(currenttrack1.fP3)>1.1){ //big theta -- for low mult. runs
AliITStrackMI* vtrack = new (&tracks[ilayer][ntracks[ilayer]]) AliITStrackMI(currenttrack1);
vtrack->fClIndex[ilayer]=0;
fI = ilayer;
if ( normalizedchi2[itrack]<3+0.5*ilayer) golds++;
if (ilayer>4) accepted++;
else{
- if ( fConstraint[fPass] && normalizedchi2[itrack]<kMaxNormChi2C[ilayer]+1) accepted++;
- if (!fConstraint[fPass] && normalizedchi2[itrack]<kMaxNormChi2NonC[ilayer]+1) accepted++;
+ if ( constrain && normalizedchi2[itrack]<kMaxNormChi2C[ilayer]+1) accepted++;
+ if (!constrain && normalizedchi2[itrack]<kMaxNormChi2NonC[ilayer]+1) accepted++;
}
}
TMath::Sort(ntracks[ilayer],normalizedchi2,nindexes[ilayer],kFALSE);
if (ntracks[ilayer]>90) ntracks[ilayer]=90;
} //loop over layers
//printf("%d\t%d\t%d\t%d\t%d\t%d\n",ntracks[0],ntracks[1],ntracks[2],ntracks[3],ntracks[4],ntracks[5]);
- Int_t max = fConstraint[fPass]? 20: 5;
+ Int_t max = constrain? 20: 5;
for (Int_t i=0;i<TMath::Min(max,ntracks[0]);i++) {
AliITStrackMI & track= tracks[0][nindexes[0][i]];
if (track.GetNumberOfClusters()<2) continue;
- if (!fConstraint[fPass]&&track.fNormChi2[0]>7.)continue;
+ if (!constrain&&track.fNormChi2[0]>7.)continue;
AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}
for (Int_t i=0;i<TMath::Min(2,ntracks[1]);i++) {
AliITStrackMI & track= tracks[1][nindexes[1][i]];
if (track.GetNumberOfClusters()<4) continue;
- if (!fConstraint[fPass]&&track.fNormChi2[1]>7.)continue;
- if (fConstraint[fPass]) track.fNSkipped+=1;
- if (!fConstraint[fPass]) {
+ if (!constrain&&track.fNormChi2[1]>7.)continue;
+ if (constrain) track.fNSkipped+=1;
+ if (!constrain) {
track.fD[0] = track.GetD(GetX(),GetY());
track.fNSkipped+=4./(4.+8.*TMath::Abs(track.fD[0]));
if (track.fN+track.fNDeadZone+track.fNSkipped>6) {
}
//}
- if (!fConstraint[fPass]){
+ if (!constrain){
for (Int_t i=0;i<TMath::Min(2,ntracks[2]);i++) {
AliITStrackMI & track= tracks[2][nindexes[2][i]];
if (track.GetNumberOfClusters()<3) continue;
- if (!fConstraint[fPass]&&track.fNormChi2[2]>7.)continue;
- if (fConstraint[fPass]) track.fNSkipped+=2;
- if (!fConstraint[fPass]){
+ if (!constrain&&track.fNormChi2[2]>7.)continue;
+ if (constrain) track.fNSkipped+=2;
+ if (!constrain){
track.fD[0] = track.GetD(GetX(),GetY());
track.fNSkipped+= 7./(7.+8.*TMath::Abs(track.fD[0]));
if (track.fN+track.fNDeadZone+track.fNSkipped>6) {
AddTrackHypothesys(new AliITStrackMI(track), esdindex);
}
}
+
+ if (!constrain){
+ //
+ // register best tracks - important for V0 finder
+ //
+ for (Int_t ilayer=0;ilayer<5;ilayer++){
+ if (ntracks[ilayer]==0) continue;
+ AliITStrackMI & track= tracks[ilayer][nindexes[ilayer][0]];
+ if (track.GetNumberOfClusters()<1) continue;
+ CookLabel(&track,0);
+ bestarray->AddAt(new AliITStrackMI(track),ilayer);
+ }
+ }
+ //
+ // update TPC V0 information
+ //
+ if (otrack->fESDtrack->GetV0Index(0)>0){
+ Float_t fprimvertex[3]={GetX(),GetY(),GetZ()};
+ for (Int_t i=0;i<3;i++){
+ Int_t index = otrack->fESDtrack->GetV0Index(i);
+ if (index==0) break;
+ AliESDV0MI * vertex = fEsd->GetV0MI(index);
+ if (vertex->GetStatus()<0) continue; // rejected V0
+ //
+ if (otrack->fP4>0) {
+ vertex->SetIndex(0,esdindex);
+ }
+ else{
+ vertex->SetIndex(1,esdindex);
+ }
+ //find nearest layer with track info
+ Int_t nearestold = GetNearestLayer(vertex->GetXrp());
+ Int_t nearest = nearestold;
+ for (Int_t ilayer =nearest;ilayer<8;ilayer++){
+ if (ntracks[nearest]==0){
+ nearest = ilayer;
+ }
+ }
+ //
+ AliITStrackMI & track= tracks[nearest][nindexes[nearest][0]];
+ if (nearestold<5&&nearest<5){
+ Bool_t accept = track.fNormChi2[nearest]<10;
+ if (accept){
+ if (track.fP4>0) {
+ vertex->SetP(track);
+ vertex->Update(fprimvertex);
+ // vertex->SetIndex(0,track.fESDtrack->GetID());
+ if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
+ }else{
+ vertex->SetM(track);
+ vertex->Update(fprimvertex);
+ //vertex->SetIndex(1,track.fESDtrack->GetID());
+ if (track.GetNumberOfClusters()>2) AddTrackHypothesys(new AliITStrackMI(track), esdindex);
+ }
+ vertex->SetStatus(vertex->GetStatus()+1);
+ }else{
+ // vertex->SetStatus(-2); // reject V0 - not enough clusters
+ }
+ }
+ // if (nearestold>3){
+// Int_t indexlayer = (ntracks[0]>0)? 0:1;
+// if (ntracks[indexlayer]>0){
+// AliITStrackMI & track= tracks[indexlayer][nindexes[indexlayer][0]];
+// if (track.GetNumberOfClusters()>4&&track.fNormChi2[indexlayer]<4){
+// vertex->SetStatus(-1); // reject V0 - clusters before
+// }
+// }
+// }
+ }
+ }
}
if (!backtrack->Improve(0,xyzv,ersv)) continue;
if (!backtrack->PropagateToVertex()) continue;
backtrack->ResetCovariance();
- if (!backtrack->Improve(0,xyzv,ersv)) continue;
+ if (!backtrack->Improve(0,xyzv,ersv)) continue;
}else{
backtrack->ResetCovariance();
}
//
sigmarfi = 0.004+1.4 *TMath::Abs(track->fP4)+332.*track->fP4*track->fP4;
sigmaz = 0.011+4.37*TMath::Abs(track->fP4);
-
}
+Int_t AliITStrackerMI::GetNearestLayer(const Double_t *xr) const{
+ //
+ //Get nearest upper layer close to the point xr.
+ // rough approximation
+ //
+ const Float_t radiuses[6]={4,6.5,15.03,24.,38.5,43.7};
+ Float_t radius = TMath::Sqrt(xr[0]*xr[0]+xr[1]*xr[1]);
+ Int_t res =6;
+ for (Int_t i=0;i<6;i++){
+ if (radius<radiuses[i]){
+ res =i;
+ break;
+ }
+ }
+ return res;
+}
+void AliITStrackerMI::UpdateTPCV0(AliESD *event){
+ //
+ //try to update, or reject TPC V0s
+ //
+ Int_t nv0s = event->GetNumberOfV0MIs();
+ Int_t nitstracks = fTrackHypothesys.GetEntriesFast();
+ for (Int_t i=0;i<nv0s;i++){
+ AliESDV0MI * vertex = event->GetV0MI(i);
+ Int_t ip = vertex->GetIndex(0);
+ Int_t im = vertex->GetIndex(1);
+ //
+ TObjArray * arrayp = (ip<nitstracks) ? (TObjArray*)fTrackHypothesys.At(ip):0;
+ TObjArray * arraym = (im<nitstracks) ? (TObjArray*)fTrackHypothesys.At(im):0;
+ AliITStrackMI * trackp = (arrayp!=0) ? (AliITStrackMI*)arrayp->At(0):0;
+ AliITStrackMI * trackm = (arraym!=0) ? (AliITStrackMI*)arraym->At(0):0;
+ //
+ //
+ if (trackp){
+ if (trackp->fN+trackp->fNDeadZone>5.5){
+ if (trackp->fConstrain&&trackp->fChi2MIP[0]<3) vertex->SetStatus(-100);
+ if (!trackp->fConstrain&&trackp->fChi2MIP[0]<2) vertex->SetStatus(-100);
+ }
+ }
+ if (trackm){
+ if (trackm->fN+trackm->fNDeadZone>5.5){
+ if (trackm->fConstrain&&trackm->fChi2MIP[0]<3) vertex->SetStatus(-100);
+ if (!trackm->fConstrain&&trackm->fChi2MIP[0]<2) vertex->SetStatus(-100);
+ }
+ }
+ if (vertex->GetStatus()==-100) continue;
+ //
+ Int_t clayer = GetNearestLayer(vertex->GetXrp());
+ vertex->SetNBefore(clayer); //
+ vertex->SetChi2Before(9*clayer); //
+ vertex->SetNAfter(6-clayer); //
+ vertex->SetChi2After(0); //
+ //
+ if (clayer >1 ){ // calculate chi2 before vertex
+ Float_t chi2p = 0, chi2m=0;
+ //
+ if (trackp){
+ for (Int_t ilayer=0;ilayer<clayer;ilayer++){
+ if (trackp->fClIndex[ilayer]>0){
+ chi2p+=trackp->fDy[ilayer]*trackp->fDy[ilayer]/(trackp->fSigmaY[ilayer]*trackp->fSigmaY[ilayer])+
+ trackp->fDz[ilayer]*trackp->fDz[ilayer]/(trackp->fSigmaZ[ilayer]*trackp->fSigmaZ[ilayer]);
+ }
+ else{
+ chi2p+=9;
+ }
+ }
+ }else{
+ chi2p = 9*clayer;
+ }
+ //
+ if (trackm){
+ for (Int_t ilayer=0;ilayer<clayer;ilayer++){
+ if (trackm->fClIndex[ilayer]>0){
+ chi2m+=trackm->fDy[ilayer]*trackm->fDy[ilayer]/(trackm->fSigmaY[ilayer]*trackm->fSigmaY[ilayer])+
+ trackm->fDz[ilayer]*trackm->fDz[ilayer]/(trackm->fSigmaZ[ilayer]*trackm->fSigmaZ[ilayer]);
+ }
+ else{
+ chi2m+=9;
+ }
+ }
+ }else{
+ chi2m = 9*clayer;
+ }
+ vertex->SetChi2Before(TMath::Min(chi2p,chi2m));
+ if (TMath::Min(chi2p,chi2m)/Float_t(clayer)<4) vertex->SetStatus(-10); // track exist before vertex
+ }
+
+ if (clayer < 5 ){ // calculate chi2 after vertex
+ Float_t chi2p = 0, chi2m=0;
+ //
+ if (trackp&&TMath::Abs(trackp->fP3)<1.){
+ for (Int_t ilayer=clayer;ilayer<6;ilayer++){
+ if (trackp->fClIndex[ilayer]>0){
+ chi2p+=trackp->fDy[ilayer]*trackp->fDy[ilayer]/(trackp->fSigmaY[ilayer]*trackp->fSigmaY[ilayer])+
+ trackp->fDz[ilayer]*trackp->fDz[ilayer]/(trackp->fSigmaZ[ilayer]*trackp->fSigmaZ[ilayer]);
+ }
+ else{
+ chi2p+=9;
+ }
+ }
+ }else{
+ chi2p = 0;
+ }
+ //
+ if (trackm&&TMath::Abs(trackm->fP3)<1.){
+ for (Int_t ilayer=clayer;ilayer<6;ilayer++){
+ if (trackm->fClIndex[ilayer]>0){
+ chi2m+=trackm->fDy[ilayer]*trackm->fDy[ilayer]/(trackm->fSigmaY[ilayer]*trackm->fSigmaY[ilayer])+
+ trackm->fDz[ilayer]*trackm->fDz[ilayer]/(trackm->fSigmaZ[ilayer]*trackm->fSigmaZ[ilayer]);
+ }
+ else{
+ chi2m+=9;
+ }
+ }
+ }else{
+ chi2m = 0;
+ }
+ vertex->SetChi2After(TMath::Max(chi2p,chi2m));
+ if (TMath::Max(chi2m,chi2p)/Float_t(6-clayer)>9) vertex->SetStatus(-20); // track not found in ITS
+ }
+ }
+ //
+}
-void AliITStrackerMI::FindV0(AliESD *event)
+void AliITStrackerMI::FindV02(AliESD *event)
{
//
- // fast V0 finder
+ // V0 finder
+ //
+ // Cuts on DCA - R dependent
+ // max distance DCA between 2 tracks cut
+ // maxDist = TMath::Min(kMaxDist,kMaxDist0+pvertex->GetRr()*kMaxDist);
+ //
+ const Float_t kMaxDist0 = 0.1;
+ const Float_t kMaxDist1 = 0.1;
+ const Float_t kMaxDist = 1;
+ const Float_t kMinPointAngle = 0.85;
+ const Float_t kMinPointAngle2 = 0.99;
+ const Float_t kMinR = 0.5;
+ const Float_t kMaxR = 220;
+ //const Float_t kCausality0Cut = 0.19;
+ //const Float_t kLikelihood01Cut = 0.25;
+ //const Float_t kPointAngleCut = 0.9996;
+ const Float_t kCausality0Cut = 0.19;
+ const Float_t kLikelihood01Cut = 0.45;
+ const Float_t kLikelihood1Cut = 0.5;
+ const Float_t kCombinedCut = 0.55;
+
+ //
+ //
+ TTreeSRedirector &cstream = *fDebugStreamer;
+ Int_t ntracks = event->GetNumberOfTracks();
+ Int_t nitstracks = fTrackHypothesys.GetEntriesFast();
+ fOriginal.Expand(ntracks);
+ fTrackHypothesys.Expand(ntracks);
+ fBestHypothesys.Expand(ntracks);
+ //
+ AliHelix * helixes = new AliHelix[ntracks+2];
+ TObjArray trackarray(ntracks+2); //array with tracks - with vertex constrain
+ TObjArray trackarrayc(ntracks+2); //array of "best tracks" - without vertex constrain
+ TObjArray trackarrayl(ntracks+2); //array of "longest tracks" - without vertex constrain
+ Bool_t * forbidden = new Bool_t [ntracks+2];
+ Int_t *itsmap = new Int_t [ntracks+2];
+ Float_t *dist = new Float_t[ntracks+2];
+ Float_t *normdist0 = new Float_t[ntracks+2];
+ Float_t *normdist1 = new Float_t[ntracks+2];
+ Float_t *normdist = new Float_t[ntracks+2];
+ Float_t *norm = new Float_t[ntracks+2];
+ Float_t *maxr = new Float_t[ntracks+2];
+ Float_t *minr = new Float_t[ntracks+2];
+ Float_t *minPointAngle= new Float_t[ntracks+2];
+ //
+ AliESDV0MI *pvertex = new AliESDV0MI;
+ AliITStrackMI * dummy= new AliITStrackMI;
+ dummy->SetLabel(0);
+ AliITStrackMI trackat0; //temporary track for DCA calculation
//
- //TTreeSRedirector cstream("itsv0.root");
- Int_t centries=0;
- AliHelix * helixes = new AliHelix[30000];
- TObjArray trackarray(30000);
- TObjArray trackarrayc(30000);
- Float_t * dist = new Float_t[30000];
- Float_t * normdist0 = new Float_t[30000];
- Float_t * normdist1 = new Float_t[30000];
- Float_t * normdist = new Float_t[30000];
- Float_t * norm = new Float_t[30000];
- AliESDV0MI *vertexarray = new AliESDV0MI[100000];
- AliESDV0MI *pvertex = &vertexarray[0];
- AliITStrackMI * dummy=0;
+ Float_t primvertex[3]={GetX(),GetY(),GetZ()};
//
+ // make its - esd map
//
- Int_t entries = fTrackHypothesys.GetEntriesFast();
- for (Int_t i=0;i<entries;i++){
- TObjArray * array = (TObjArray*)fTrackHypothesys.At(i);
- if (!array) continue;
- // get best track without vertex constrain
- Int_t hentries = array->GetEntriesFast();
+ for (Int_t itrack=0;itrack<ntracks+2;itrack++) {
+ itsmap[itrack] = -1;
+ forbidden[itrack] = kFALSE;
+ maxr[itrack] = kMaxR;
+ minr[itrack] = kMinR;
+ minPointAngle[itrack] = kMinPointAngle;
+ }
+ for (Int_t itrack=0;itrack<nitstracks;itrack++){
+ AliITStrackMI * original = (AliITStrackMI*)(fOriginal.At(itrack));
+ Int_t esdindex = original->fESDtrack->GetID();
+ itsmap[esdindex] = itrack;
+ }
+ //
+ // create its tracks from esd tracks if not done before
+ //
+ for (Int_t itrack=0;itrack<ntracks;itrack++){
+ if (itsmap[itrack]>=0) continue;
+ AliITStrackMI * tpctrack = new AliITStrackMI(*(event->GetTrack(itrack)));
+ tpctrack->fD[0] = tpctrack->GetD(GetX(),GetY());
+ tpctrack->fD[1] = tpctrack->GetZat(GetX())-GetZ();
+ if (tpctrack->fD[0]<20 && tpctrack->fD[1]<20){
+ // tracks which can reach inner part of ITS
+ // propagate track to outer its volume - with correction for material
+ CorrectForDeadZoneMaterial(tpctrack);
+ }
+ itsmap[itrack] = nitstracks;
+ fOriginal.AddAt(tpctrack,nitstracks);
+ nitstracks++;
+ }
+ //
+ // fill temporary arrays
+ //
+ for (Int_t itrack=0;itrack<ntracks;itrack++){
+ AliESDtrack * esdtrack = event->GetTrack(itrack);
+ Int_t itsindex = itsmap[itrack];
+ AliITStrackMI *original = (AliITStrackMI*)fOriginal.At(itsmap[itrack]);
+ if (!original) continue;
+ AliITStrackMI *bestConst = 0;
+ AliITStrackMI *bestLong = 0;
+ AliITStrackMI *best = 0;
+ //
//
- // best with vertex constrain
- AliITStrackMI * trackc = (AliITStrackMI*)array->At(0);
- if (trackc&&trackc->fConstrain&&trackc->fN==6&&trackc->fNormChi2[0]<2.) continue;
- trackc=0;
+ TObjArray * array = (TObjArray*) fTrackHypothesys.At(itsindex);
+ Int_t hentries = (array==0) ? 0 : array->GetEntriesFast();
+ // Get best track with vertex constrain
for (Int_t ih=0;ih<hentries;ih++){
AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
if (!trackh->fConstrain) continue;
- if (trackh->fN<6) continue;
- trackc = trackh;
- if (!dummy) dummy = trackc;
- dummy->SetLabel(0);
+ if (!bestConst) bestConst = trackh;
+ if (trackh->fN>5.0){
+ bestConst = trackh; // full track - with minimal chi2
+ break;
+ }
+ if (trackh->fN+trackh->fNDeadZone<=bestConst->fN+bestConst->fNDeadZone) continue;
+ bestConst = trackh;
break;
- }
- //
- // best without vertex
- AliITStrackMI * track = 0;
+ }
+ // Get best long track without vertex constrain and best track without vertex constrain
for (Int_t ih=0;ih<hentries;ih++){
AliITStrackMI * trackh = (AliITStrackMI*)array->At(ih);
if (trackh->fConstrain) continue;
- track = trackh;
- break;
+ if (!best) best = trackh;
+ if (!bestLong) bestLong = trackh;
+ if (trackh->fN>5.0){
+ bestLong = trackh; // full track - with minimal chi2
+ break;
+ }
+ if (trackh->fN+trackh->fNDeadZone<=bestLong->fN+bestLong->fNDeadZone) continue;
+ bestLong = trackh;
}
- if (trackc&&track){
- if (trackc->fChi2MIP[1]<2.) continue;
- if (trackc->fChi2MIP[0]<2. && trackc->fChi2MIP[1]<2.) continue;
- trackarrayc.AddAt(trackc,i);
- if (trackc->fN==6&&track->fN&&trackc->fNormChi2[0] < track->fNormChi2[0]-2) continue;
+ if (!best) {
+ best = original;
+ bestLong = original;
}
+ trackat0 = *bestLong;
+ Double_t xx,yy,zz,alpha;
+ bestLong->GetGlobalXYZat(bestLong->GetX(),xx,yy,zz);
+ alpha = TMath::ATan2(yy,xx);
+ trackat0.Propagate(alpha,0);
+ // calculate normalized distances to the vertex
//
+ if ( bestLong->fN>3 ){
+ dist[itsindex] = trackat0.fP0;
+ norm[itsindex] = TMath::Sqrt(trackat0.fC00);
+ normdist0[itsindex] = TMath::Abs(trackat0.fP0/norm[itsindex]);
+ normdist1[itsindex] = TMath::Abs((trackat0.fP1-primvertex[2])/TMath::Sqrt(trackat0.fC11));
+ normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
+ }
+ else{
+ if (bestConst&&bestConst->fN+bestConst->fNDeadZone>4.5){
+ dist[itsindex] = bestConst->fD[0];
+ norm[itsindex] = bestConst->fDnorm[0];
+ normdist0[itsindex] = TMath::Abs(bestConst->fD[0]/norm[itsindex]);
+ normdist1[itsindex] = TMath::Abs(bestConst->fD[0]/norm[itsindex]);
+ normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
+ }else{
+ dist[itsindex] = trackat0.fP0;
+ norm[itsindex] = TMath::Sqrt(trackat0.fC00);
+ normdist0[itsindex] = TMath::Abs(trackat0.fP0/norm[itsindex]);
+ normdist1[itsindex] = TMath::Abs((trackat0.fP1-primvertex[2])/TMath::Sqrt(trackat0.fC11));
+ normdist[itsindex] = TMath::Sqrt(normdist0[itsindex]*normdist0[itsindex]+normdist1[itsindex]*normdist1[itsindex]);
+ if (TMath::Abs(trackat0.fP3)>1.1){
+ if (normdist[itsindex]<10) forbidden[itsindex]=kTRUE;
+ }
+ }
+ }
//
+ //-----------------------------------------------------------
+ //Forbid primary track candidates -
//
- if (track){
- dist[i] = TMath::Sqrt(track->fD[0]*track->fD[0]+track->fD[1]*track->fD[1]);
- norm[i] = track->fDnorm[0];
- normdist0[i] = TMath::Abs(track->fD[0]/track->fDnorm[0]);
- normdist1[i] = TMath::Abs(track->fD[1]/track->fDnorm[1]);
- normdist[i] = TMath::Sqrt(normdist0[i]*normdist0[i]+normdist1[i]*normdist1[i]);
- if (track->IsGoldPrimary()) continue; //primary track
- if (track->fD[0]<0.02 && (track->fN+track->fNDeadZone>5.8)){
- if (normdist[i]<3.) continue; // primary track - cutoff 3 sigma
- if (normdist0[i]<2.) continue; //DCA normalized cut 2 sigma
+ //treetr->SetAlias("forbidden0","Tr0.fN<4&&Tr1.fN+Tr1.fNDeadZone>4.5");
+ //treetr->SetAlias("forbidden1","ND<3&&Tr1.fN+Tr1.fNDeadZone>5.5");
+ //treetr->SetAlias("forbidden2","ND<2&&Tr1.fClIndex[0]>0&&Tr1.fClIndex[0]>0");
+ //treetr->SetAlias("forbidden3","ND<1&&Tr1.fClIndex[0]>0");
+ //treetr->SetAlias("forbidden4","ND<4&&Tr1.fNormChi2[0]<2");
+ //treetr->SetAlias("forbidden5","ND<5&&Tr1.fNormChi2[0]<1");
+ //-----------------------------------------------------------
+ if (bestConst){
+ if (bestLong->fN<4 && bestConst->fN+bestConst->fNDeadZone>4.5) forbidden[itsindex]=kTRUE;
+ if (normdist[itsindex]<3 && bestConst->fN+bestConst->fNDeadZone>5.5) forbidden[itsindex]=kTRUE;
+ if (normdist[itsindex]<2 && bestConst->fClIndex[0]>0 && bestConst->fClIndex[1]>0 ) forbidden[itsindex]=kTRUE;
+ if (normdist[itsindex]<1 && bestConst->fClIndex[0]>0) forbidden[itsindex]=kTRUE;
+ if (normdist[itsindex]<4 && bestConst->fNormChi2[0]<2) forbidden[itsindex]=kTRUE;
+ if (normdist[itsindex]<5 && bestConst->fNormChi2[0]<1) forbidden[itsindex]=kTRUE;
+ if (bestConst->fNormChi2[0]<2.5) {
+ minPointAngle[itsindex]= 0.9999;
+ maxr[itsindex] = 10;
}
- trackarray.AddAt(track,i);
- new (&helixes[i]) AliHelix(*track);
}
+ //
+ //forbid daughter kink candidates
+ //
+ if (esdtrack->GetKinkIndex(0)>0) forbidden[itsindex] = kTRUE;
+ Bool_t isElectron = kTRUE;
+ Double_t pid[5];
+ esdtrack->GetESDpid(pid);
+ for (Int_t i=1;i<5;i++){
+ if (pid[0]<pid[i]) isElectron= kFALSE;
+ }
+ if (isElectron){
+ forbidden[itsindex]=kFALSE;
+ normdist[itsindex]+=4;
+ }
+ //
+ // Causality cuts in TPC volume
+ //
+ if (esdtrack->GetTPCdensity(0,10) >0.6) maxr[itsindex] = TMath::Min(Float_t(110),maxr[itsindex]);
+ if (esdtrack->GetTPCdensity(10,30)>0.6) maxr[itsindex] = TMath::Min(Float_t(120),maxr[itsindex]);
+ if (esdtrack->GetTPCdensity(20,40)>0.6) maxr[itsindex] = TMath::Min(Float_t(130),maxr[itsindex]);
+ if (esdtrack->GetTPCdensity(30,50)>0.6) maxr[itsindex] = TMath::Min(Float_t(140),maxr[itsindex]);
+ //
+ if (esdtrack->GetTPCdensity(0,60)<0.4&&bestLong->fN<3) minr[itsindex]=100;
+ //
+ //
+ if (0){
+ cstream<<"Track"<<
+ "Tr0.="<<best<<
+ "Tr1.="<<((bestConst)? bestConst:dummy)<<
+ "Tr2.="<<bestLong<<
+ "Tr3.="<<&trackat0<<
+ "Esd.="<<esdtrack<<
+ "Dist="<<dist[itsindex]<<
+ "ND0="<<normdist0[itsindex]<<
+ "ND1="<<normdist1[itsindex]<<
+ "ND="<<normdist[itsindex]<<
+ "Pz="<<primvertex[2]<<
+ "Forbid="<<forbidden[itsindex]<<
+ "\n";
+ //
+ }
+ trackarray.AddAt(best,itsindex);
+ trackarrayc.AddAt(bestConst,itsindex);
+ trackarrayl.AddAt(bestLong,itsindex);
+ new (&helixes[itsindex]) AliHelix(*best);
}
//
//
- // Int_t multifound=0;
- Int_t vertexall =0;
- AliESDV0MI tempvertex;
- Float_t primvertex[3]={GetX(),GetY(),GetZ()};
-
-
- for (Int_t itrack0=0;itrack0<entries;itrack0++){
- //
- AliITStrackMI * track0 = (AliITStrackMI*)trackarray.At(itrack0);
- if (!track0) continue;
- if (track0->fP4>0) continue;
+ //
+ // first iterration of V0 finder
+ //
+ for (Int_t iesd0=0;iesd0<ntracks;iesd0++){
+ Int_t itrack0 = itsmap[iesd0];
+ if (forbidden[itrack0]) continue;
+ AliITStrackMI * btrack0 = (AliITStrackMI*)trackarray.At(itrack0);
+ if (!btrack0) continue;
+ if (btrack0->fP4>0) continue;
AliITStrackMI *trackc0 = (AliITStrackMI*)trackarrayc.At(itrack0);
//
- TObjArray * array0 = (TObjArray*)fTrackHypothesys.At(itrack0);
- //
- Int_t vertexes =0;
- for (Int_t itrack1=0;itrack1<entries;itrack1++){
- AliITStrackMI * track1 = (AliITStrackMI*)trackarray.At(itrack1);
- if (!track1) continue;
- if (track1->fP4<0) continue;
- AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);
- if (trackc0&&trackc1){
- if (TMath::Min(trackc0->fChi2MIP[1],trackc1->fChi2MIP[1])<2.) continue;
+ for (Int_t iesd1=0;iesd1<ntracks;iesd1++){
+ Int_t itrack1 = itsmap[iesd1];
+ if (forbidden[itrack1]) continue;
+
+ AliITStrackMI * btrack1 = (AliITStrackMI*)trackarray.At(itrack1);
+ if (!btrack1) continue;
+ if (btrack1->fP4<0) continue;
+ Bool_t isGold = kFALSE;
+ if (TMath::Abs(TMath::Abs(btrack0->GetLabel())-TMath::Abs(btrack1->GetLabel()))==1){
+ isGold = kTRUE;
}
- if (track1->fNDeadZone+track0->fNDeadZone>1.1) continue;
- TObjArray * array1 = (TObjArray*)fTrackHypothesys.At(itrack1);
+ AliITStrackMI *trackc1 = (AliITStrackMI*)trackarrayc.At(itrack1);
+ AliHelix &h1 = helixes[itrack0];
+ AliHelix &h2 = helixes[itrack1];
//
- //if (normdist0[itrack0]+normdist0[itrack1]<3) continue;
- //if (normdist[itrack0]+normdist[itrack1]<4) continue;
+ // find linear distance
+ Double_t rmin =0;
//
//
- AliHelix *h1 = &helixes[itrack0];
- AliHelix *h2 = &helixes[itrack1];
- Double_t rmin =0;
- Double_t distance = TestV0(h1,h2,pvertex,rmin);
//
- if (distance>0.4) continue;
- if (pvertex->GetRr()<0.3) continue;
- if (pvertex->GetRr()>20.) continue;
- pvertex->SetM(*track0);
- pvertex->SetP(*track1);
- pvertex->Update(primvertex);
- if (pvertex->GetRr()<0.3) continue;
- if (pvertex->GetRr()>20.) continue;
- if (track1->fNDeadZone+track0->fNDeadZone>0.5 &&distance>0.12) continue;
-
+ Double_t phase[2][2],radius[2];
+ Int_t points = h1.GetRPHIintersections(h2, phase, radius);
+ if (points==0) continue;
+ Double_t delta[2]={1000,1000};
+ rmin = radius[0];
+ h1.ParabolicDCA(h2,phase[0][0],phase[0][1],radius[0],delta[0]);
+ if (points==2){
+ if (radius[1]<rmin) rmin = radius[1];
+ h1.ParabolicDCA(h2,phase[1][0],phase[1][1],radius[1],delta[1]);
+ }
+ rmin = TMath::Sqrt(rmin);
+ Double_t distance = 0;
+ Double_t radiusC = 0;
+ Int_t iphase = 0;
+ if (delta[0]<delta[1]){
+ distance = TMath::Sqrt(delta[0]);
+ radiusC = TMath::Sqrt(radius[0]);
+ }else{
+ distance = TMath::Sqrt(delta[1]);
+ radiusC = TMath::Sqrt(radius[1]);
+ iphase=1;
+ }
+ if (radiusC<TMath::Max(minr[itrack0],minr[itrack1])) continue;
+ if (radiusC>TMath::Min(maxr[itrack0],maxr[itrack1])) continue;
+ Float_t maxDist = TMath::Min(kMaxDist,Float_t(kMaxDist0+radiusC*kMaxDist1));
+ if (distance>maxDist) continue;
+ Float_t pointAngle = h1.GetPointAngle(h2,phase[iphase],primvertex);
+ if (pointAngle<TMath::Max(minPointAngle[itrack0],minPointAngle[itrack1])) continue;
//
-
- if ( TMath::Abs((TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel())))<2
- ||(centries<5000&&(pvertex->GetPointAngle()>0.95))){
- //cstream<<"Iter0"<<track0<<track1<<pvertex<<normdist[itrack0]<<normdist[itrack1]<<"\n";
- centries++;
- }
//
+ // Double_t distance = TestV0(h1,h2,pvertex,rmin);
//
- if (pvertex->GetPointAngle()<0.85) continue;
- // if (normdist[itrack0]+normdist[itrack1]<6&&pvertex->GetPointAngle()<0.99) continue;
+ // if (distance>maxDist) continue;
+ // if (pvertex->GetRr()<kMinR) continue;
+ // if (pvertex->GetRr()>kMaxR) continue;
+ AliITStrackMI * track0=btrack0;
+ AliITStrackMI * track1=btrack1;
+ // if (pvertex->GetRr()<3.5){
+ if (radiusC<3.5){
+ //use longest tracks inside the pipe
+ track0 = (AliITStrackMI*)trackarrayl.At(itrack0);
+ track1 = (AliITStrackMI*)trackarrayl.At(itrack1);
+ }
//
//
+ pvertex->SetM(*track0);
+ pvertex->SetP(*track1);
+ pvertex->Update(primvertex);
+ if (pvertex->GetRr()<kMinR) continue;
+ if (pvertex->GetRr()>kMaxR) continue;
+ if (pvertex->GetPointAngle()<kMinPointAngle) continue;
+ if (pvertex->GetDist2()>maxDist) continue;
pvertex->SetLab(0,track0->GetLabel());
pvertex->SetLab(1,track1->GetLabel());
- pvertex->SetIndex(0,track0->GetESDtrack()->GetID());
- pvertex->SetIndex(1,track1->GetESDtrack()->GetID());
- // calculate chi2s
- //
- pvertex->SetChi2After(0);
- pvertex->SetChi2Before(0);
- pvertex->SetNBefore(0);
- pvertex->SetNAfter(0);
- for (Int_t i=0;i<6;i++){
- Float_t radius = fgLayers[i].GetR();
- if (pvertex->GetRr()>radius+0.5){
- pvertex->SetNBefore(pvertex->GetNBefore()+2.);
- //
- if (track0->fClIndex[i]<=0) {
- pvertex->SetChi2Before(pvertex->GetChi2Before()+9);
- }else{
- Float_t chi2 = track0->fDy[i]*track0->fDy[i]/(track0->fSigmaY[i]*track0->fSigmaY[i])+
- track0->fDz[i]*track0->fDz[i]/(track0->fSigmaZ[i]*track0->fSigmaZ[i]);
- pvertex->SetChi2Before(pvertex->GetChi2Before()+chi2);
- }
+ //
+ AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy;
+ AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;
- if (track1->fClIndex[i]<=0) {
- pvertex->SetChi2Before(pvertex->GetChi2Before()+9);
-
- }else{
- Float_t chi2 = track1->fDy[i]*track1->fDy[i]/(track1->fSigmaY[i]*track1->fSigmaY[i])+
- track1->fDz[i]*track1->fDz[i]/(track1->fSigmaZ[i]*track1->fSigmaZ[i]);
- // pvertex->fChi2Before+=chi2;
- pvertex->SetChi2Before(pvertex->GetChi2Before()+chi2);
+ //
+ //
+ TObjArray * array0b = (TObjArray*)fBestHypothesys.At(itrack0);
+ if (!array0b&&pvertex->GetRr()<40 && TMath::Abs(track0->fP3)<1.1)
+ FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack0),itrack0, kFALSE);
+ TObjArray * array1b = (TObjArray*)fBestHypothesys.At(itrack1);
+ if (!array1b&&pvertex->GetRr()<40 && TMath::Abs(track1->fP3)<1.1)
+ FollowProlongationTree((AliITStrackMI*)fOriginal.At(itrack1),itrack1, kFALSE);
+ //
+ AliITStrackMI * track0b = (AliITStrackMI*)fOriginal.At(itrack0);
+ AliITStrackMI * track1b = (AliITStrackMI*)fOriginal.At(itrack1);
+ AliITStrackMI * track0l = (AliITStrackMI*)fOriginal.At(itrack0);
+ AliITStrackMI * track1l = (AliITStrackMI*)fOriginal.At(itrack1);
+
+ Float_t minchi2before0=16;
+ Float_t minchi2before1=16;
+ Float_t minchi2after0 =16;
+ Float_t minchi2after1 =16;
+ Int_t maxLayer = GetNearestLayer(pvertex->GetXrp());
+
+ if (array0b) for (Int_t i=0;i<5;i++){
+ // best track after vertex
+ AliITStrackMI * btrack = (AliITStrackMI*)array0b->At(i);
+ if (!btrack) continue;
+ if (btrack->fN>track0l->fN) track0l = btrack;
+ if (btrack->fX<pvertex->GetRr()-2) {
+ if (maxLayer>i+2 && btrack->fN==(6-i)&&i<2){
+ Float_t sumchi2= 0;
+ Float_t sumn = 0;
+ for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
+ sumn+=1.;
+ if (!btrack->fClIndex[ilayer]){
+ sumchi2+=25;
+ continue;
+ }else{
+ sumchi2+=btrack->fDy[ilayer]*btrack->fDy[ilayer]/(btrack->fSigmaY[ilayer]*btrack->fSigmaY[ilayer]);
+ sumchi2+=btrack->fDz[ilayer]*btrack->fDz[ilayer]/(btrack->fSigmaZ[ilayer]*btrack->fSigmaZ[ilayer]);
+ }
+ }
+ sumchi2/=sumn;
+ if (sumchi2<minchi2before0) minchi2before0=sumchi2;
}
+ continue; //safety space - Geo manager will give exact layer
}
-
- if (pvertex->GetRr()<radius-0.5){
- pvertex->SetNAfter(pvertex->GetNAfter()+2.);
- //
- if (track0->fClIndex[i]<=0) {
- pvertex->SetChi2After(pvertex->GetChi2After()+9);
- }else{
- Float_t chi2 = track0->fDy[i]*track0->fDy[i]/(track0->fSigmaY[i]*track0->fSigmaY[i])+
- track0->fDz[i]*track0->fDz[i]/(track0->fSigmaZ[i]*track0->fSigmaZ[i]);
- pvertex->SetChi2After(pvertex->GetChi2After()+chi2);
- }
-
- if (track1->fClIndex[i]<=0) {
- pvertex->SetChi2After(pvertex->GetChi2After()+9.);
- }else{
- Float_t chi2 = track1->fDy[i]*track1->fDy[i]/(track1->fSigmaY[i]*track1->fSigmaY[i])+
- track1->fDz[i]*track1->fDz[i]/(track1->fSigmaZ[i]*track1->fSigmaZ[i]);
- pvertex->SetChi2After(pvertex->GetChi2After()+chi2);
+ track0b = btrack;
+ minchi2after0 = btrack->fNormChi2[i];
+ break;
+ }
+ if (array1b) for (Int_t i=0;i<5;i++){
+ // best track after vertex
+ AliITStrackMI * btrack = (AliITStrackMI*)array1b->At(i);
+ if (!btrack) continue;
+ if (btrack->fN>track1l->fN) track1l = btrack;
+ if (btrack->fX<pvertex->GetRr()-2){
+ if (maxLayer>i+2&&btrack->fN==(6-i)&&(i<2)){
+ Float_t sumchi2= 0;
+ Float_t sumn = 0;
+ for (Int_t ilayer=i;ilayer<maxLayer;ilayer++){
+ sumn+=1.;
+ if (!btrack->fClIndex[ilayer]){
+ sumchi2+=30;
+ continue;
+ }else{
+ sumchi2+=btrack->fDy[ilayer]*btrack->fDy[ilayer]/(btrack->fSigmaY[ilayer]*btrack->fSigmaY[ilayer]);
+ sumchi2+=btrack->fDz[ilayer]*btrack->fDz[ilayer]/(btrack->fSigmaZ[ilayer]*btrack->fSigmaZ[ilayer]);
+ }
+ }
+ sumchi2/=sumn;
+ if (sumchi2<minchi2before1) minchi2before1=sumchi2;
}
+ continue; //safety space - Geo manager will give exact layer
}
+ track1b = btrack;
+ minchi2after1 = btrack->fNormChi2[i];
+ break;
}
- if (pvertex->GetNBefore()>2){
- if (pvertex->GetChi2Before()/pvertex->GetNBefore()<4.) continue; //have clusters before vetex
- }
- Int_t ibest0=0,ibest1=0;
- AliITStrackMI * ntrack0 = track0;
- AliITStrackMI * ntrack1 = track1;
- //
- //
- //PH Float_t oldistance = pvertex->GetDist2();
- Bool_t improve = FindBestPair(itrack0,itrack1,pvertex,ibest0,ibest1); // try to improve vertex
- if (pvertex->GetPointAngle()<0.5) continue;
- distance = pvertex->GetDist2();
- if (improve){
- ntrack0 = (AliITStrackMI*)array0->At(ibest0);
- ntrack1 = (AliITStrackMI*)array1->At(ibest1);
- }
- Bool_t accept0 = kFALSE; // accept ==> because of pointing angle
- if (pvertex->GetPointAngle()>0.999){
- if (pvertex->GetRr()<3.5 && (ntrack0->fN+ntrack0->fNDeadZone+ntrack1->fN+ntrack1->fNDeadZone)<11.5) continue;
- if (pvertex->GetRr()>3.5&& pvertex->GetDistNorm()<12) accept0 = kTRUE;
- if (pvertex->GetRr()>1 && pvertex->GetDist2()<0.1 && pvertex->GetDistNorm()<12) accept0 = kTRUE;
- if (pvertex->GetPointAngle()>0.9995&&pvertex->GetRr()>5.) accept0 = kTRUE;
- }
- Bool_t reject1= kFALSE; // reject ==> bad kinematic
- //
- reject1 |= TMath::Abs(ntrack0->fN+ntrack0->fNDeadZone-ntrack1->fN-ntrack1->fNDeadZone)>1.02 ||
- TMath::Abs(ntrack0->fN-ntrack1->fN)>1.02; // cut1
- reject1 |= ntrack0->fNUsed+ntrack1->fNUsed>1.01; // cut2
- reject1 |= pvertex->GetDistNorm()>12; // cut3
- reject1 |= pvertex->GetDist2()>0.1 && improve; // cut4
- reject1 |= (TMath::Abs(ntrack0->fD[0])+TMath::Abs(ntrack1->fD[0]))/pvertex->GetDist2()<5; //cut5
- reject1 |= TMath::Abs(ntrack0->fD[0]/pvertex->GetDist2())<2 || TMath::Abs(ntrack1->fD[0]/pvertex->GetDist2())<2; //cut 6
//
- // small radii cuts
- Bool_t reject2 = kFALSE;
- if (pvertex->GetRr()<3.6){
- reject2 |= (TMath::Abs(ntrack0->fN+ntrack0->fNDeadZone-ntrack1->fN-ntrack1->fNDeadZone)>0.01); // cut7
- reject2 |= ntrack0->fNUsed+ntrack1->fNUsed>0.01; // cut8
- reject2 |= ntrack0->fN+ntrack0->fNDeadZone+ntrack1->fN+ntrack1->fNDeadZone<11.5; // cut9
- reject2 |= (ntrack0->fN+ntrack1->fN<11.5)&&pvertex->GetRr()<2; // cut10
- reject2 |= pvertex->GetDist2()>0.1; // cut11
- }
- //PH AliITStrackMI * htrackc0 = trackc0 ? trackc0:dummy;
- //PH AliITStrackMI * htrackc1 = trackc1 ? trackc1:dummy;
+ // position resolution - used for DCA cut
+ Float_t sigmad = track0b->fC00+track0b->fC11+track1b->fC00+track1b->fC11+
+ (track0b->fX-pvertex->GetRr())*(track0b->fX-pvertex->GetRr())*(track0b->fC22+track0b->fC33)+
+ (track1b->fX-pvertex->GetRr())*(track1b->fX-pvertex->GetRr())*(track1b->fC22+track1b->fC33);
+ sigmad =TMath::Sqrt(sigmad)+0.04;
+ if (pvertex->GetRr()>50){
+ Double_t cov0[15],cov1[15];
+ track0b->fESDtrack->GetInnerExternalCovariance(cov0);
+ track1b->fESDtrack->GetInnerExternalCovariance(cov1);
+ sigmad = cov0[0]+cov0[2]+cov1[0]+cov1[2]+
+ (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov0[5]+cov0[9])+
+ (80.-pvertex->GetRr())*(80.-pvertex->GetRr())*(cov1[5]+cov1[9]);
+ sigmad =TMath::Sqrt(sigmad)+0.05;
+ }
+ //
+ AliESDV0MI vertex2;
+ vertex2.SetM(*track0b);
+ vertex2.SetP(*track1b);
+ vertex2.Update(primvertex);
+ if (vertex2.GetDist2()<=pvertex->GetDist2()&&(vertex2.GetPointAngle()>=pvertex->GetPointAngle())){
+ pvertex->SetM(*track0b);
+ pvertex->SetP(*track1b);
+ pvertex->Update(primvertex);
+ }
+ pvertex->SetDistSigma(sigmad);
+ pvertex->SetDistNorm(pvertex->GetDist2()/sigmad);
//
+ // define likelihhod and causalities
//
- //
- if ( TMath::Abs((TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel())))<2
- ||(centries<500000)){
- /*
- cstream<<"It1"<<"Tr0.="<<ntrack0<<"TR1.="<<ntrack1<<"V0.="<<pvertex<<"ND0.="<<normdist[itrack0]<<"ND1.="<<
- normdist[itrack1]<<"D.="<<distance<<"DistOld="<<oldistance<<"Imp.="<<improve<<
- "A0="<<accept0<<"R1="<<reject1<<"R2="<<reject2<<"Rmin.="<<rmin<<
- "TrC0.="<<htrackc0<<"TRC1.="<<htrackc1<<"\n";
- */
- centries++;
+ Float_t pa0=1, pa1=1, pb0=0.26, pb1=0.26;
+ if (maxLayer<2){
+ if (pvertex->GetAnglep()[2]>0.2){
+ pb0 = TMath::Exp(-TMath::Min(normdist[itrack0],Float_t(16.))/12.);
+ pb1 = TMath::Exp(-TMath::Min(normdist[itrack1],Float_t(16.))/12.);
+ }
+ pvertex->SetChi2Before(normdist[itrack0]);
+ pvertex->SetChi2After(normdist[itrack1]);
+ pvertex->SetNAfter(0);
+ pvertex->SetNBefore(0);
+ }else{
+ pvertex->SetChi2Before(minchi2before0);
+ pvertex->SetChi2After(minchi2before1);
+ if (pvertex->GetAnglep()[2]>0.2){
+ pb0 = TMath::Exp(-TMath::Min(minchi2before0,Float_t(16))/12.);
+ pb1 = TMath::Exp(-TMath::Min(minchi2before1,float_t(16))/12.);
+ }
+ pvertex->SetNAfter(maxLayer);
+ pvertex->SetNBefore(maxLayer);
}
-
- if (!accept0 && (reject1 || reject2)) continue;
-
-// if (distance>0.5) continue;
-// distance = pvertex->GetDist2();
-// if (pvertex->GetRr()>25 || pvertex->GetRr()<0.2) continue;
-// if (pvertex->GetRr()/pvertex->fDistSigma<1) continue;
-// if (pvertex->GetDistNorm()>10) continue;
-// if (pvertex->GetPointAngle()<0.85) continue;
-// if ((normdist[itrack0]<3||normdist[itrack1]<3)){
-// if (pvertex->GetPointAngle()<0.99||pvertex->GetDist2()>0.15) continue;
-// }
-// if (distance>0.05*(0.8+0.2*(0.5+pvertex->GetRr()))) continue;
-// if (pvertex->GetRr()<0.3) continue;
-// if (pvertex->GetRr()>27.) continue;
-
-
-
- //
- if (distance<0.3 &&pvertex->GetPointAngle()>0.998){
- track0->fGoldV0 = kTRUE;
- track1->fGoldV0 = kTRUE;
+ if (pvertex->GetRr()<90){
+ pa0 *= TMath::Min(track0->fESDtrack->GetTPCdensity(0,60),Float_t(1.));
+ pa1 *= TMath::Min(track1->fESDtrack->GetTPCdensity(0,60),Float_t(1.));
}
- vertexes++;
- vertexall++;
- if (vertexall>=100000) break;
- pvertex = &vertexarray[vertexall];
- }
- }
- // printf("\n\n\nMultifound\t%d\n\n\n",multifound);
- //
- // sort vertices according quality
- Float_t quality[40000];
- Int_t indexes[40000];
- Int_t trackvertices[40000];
- for (Int_t i=0;i<entries;i++) trackvertices[i]=0;
- for (Int_t i=0;i<vertexall;i++) {
- Float_t norm = 1.-0.999*TMath::Abs(vertexarray[i].GetPointAngle());
- Float_t fnormdist = 1./(1+vertexarray[i].GetRr());
- quality[i] = norm*fnormdist;
- }
- //
- TMath::Sort(vertexall,quality,indexes,kFALSE);
-
- for (Int_t i=0;i<vertexall;i++){
- pvertex= &vertexarray[indexes[i]];
- Int_t index0 = vertexarray[indexes[i]].GetIndex(0);
- Int_t index1 = vertexarray[indexes[i]].GetIndex(1);
- vertexarray[indexes[i]].SetOrder(2,i);
- vertexarray[indexes[i]].SetOrder(1,trackvertices[index1]);
- vertexarray[indexes[i]].SetOrder(0,trackvertices[index0]);
- Int_t v0index = event->AddV0MI(&vertexarray[indexes[i]]);
- //
- if (trackvertices[index1]+trackvertices[index0]>5) continue;
- if (trackvertices[index0]>2) continue;
- if (trackvertices[index1]>2) continue;
-
- if (trackvertices[index1]+trackvertices[index0]>0) {
- // if (pvertex->GetPointAngle()<0.995) continue;
- }
- trackvertices[index0]++;
- trackvertices[index1]++;
-
- AliESDtrack * ptrack0 = event->GetTrack(vertexarray[indexes[i]].GetIndex(0));
- AliESDtrack * ptrack1 = event->GetTrack(vertexarray[indexes[i]].GetIndex(1));
- if (!ptrack0 || !ptrack1){
- printf("BBBBBBBUUUUUUUUUUGGGGGGGGGG\n");
- }
- Int_t v0index0[3]={ptrack0->GetV0Index(0),ptrack0->GetV0Index(1),ptrack0->GetV0Index(2)};
- Int_t v0index1[3]={ptrack1->GetV0Index(0),ptrack1->GetV0Index(1),ptrack1->GetV0Index(2)};
- for (Int_t i=0;i<3;i++){
- if (v0index0[i]<0) {
- v0index0[i]=v0index;
- ptrack0->SetV0Indexes(v0index0);
- break;
- }
- }
- for (Int_t i=0;i<3;i++){
- if (v0index1[i]<0) {
- v0index1[i]=v0index;
- ptrack1->SetV0Indexes(v0index1);
- break;
+ if (pvertex->GetRr()<20){
+ pa0 *= (0.2+TMath::Exp(-TMath::Min(minchi2after0,Float_t(16))/8.))/1.2;
+ pa1 *= (0.2+TMath::Exp(-TMath::Min(minchi2after1,Float_t(16))/8.))/1.2;
}
- }
- }
-
- delete [] helixes;
- delete [] dist;
- delete [] normdist0;
- delete [] normdist1;
- delete [] normdist;
- delete [] norm;
-
- delete[] vertexarray;
-}
-
-
-
-Bool_t AliITStrackerMI::FindBestPair(Int_t esdtrack0, Int_t esdtrack1, AliESDV0MI *vertex, Int_t &i0, Int_t &i1)
-{
- //
- // try to find best pair from the tree of track hyp.
- //
- TObjArray * array0 = (TObjArray*)fTrackHypothesys.At(esdtrack0);
- Int_t entries0 = array0->GetEntriesFast();
- TObjArray * array1 = (TObjArray*)fTrackHypothesys.At(esdtrack1);
- Int_t entries1 = array1->GetEntriesFast();
- // AliITStrackMI *orig0 = (AliITStrackMI*)fOriginal.At(esdtrack0);
- //AliITStrackMI *orig1 = (AliITStrackMI*)fOriginal.At(esdtrack1);
- Double_t criticalradius = vertex->GetRr();
- AliITStrackMI * track0= 0;
- AliITStrackMI * track1= 0;
- i0 = -1;
- i1 = -1;
- //
- //
- Float_t rfirst0[2000]; //radius position of the first cluster - track0
- Float_t rfirst1[2000]; // - track1
- Float_t maxlocalx0=0; //local x for first track
- Float_t maxlocalx1=0; //local x for second track
- Float_t cs0=1, sn0=0; //rotations
- Float_t cs1=1, sn1=0; //rotations
-
- //
- for (Int_t itrack0=0;itrack0<entries0;itrack0++){
- rfirst0[itrack0]=-1.;
- AliITStrackMI * htrack0 = (AliITStrackMI*)array0->At(itrack0);
- if (!htrack0) continue;
- if (htrack0->fConstrain) continue;
- if (i0<0){
- i0 = itrack0;
- track0 = htrack0;
- }
- Double_t cs = TMath::Cos(htrack0->fAlpha);
- Double_t sn = TMath::Sin(htrack0->fAlpha);
- Double_t x = htrack0->fX*cs - htrack0->fP0*sn;
- Double_t y = htrack0->fX*sn + htrack0->fP0*cs;
- Double_t radius = TMath::Sqrt(x*x+y*y);
- if (criticalradius<3 && radius>6&&htrack0->fNDeadZone<0.2) continue; // all cluster required
- if (criticalradius>10 && radius<6) continue; // causality
- Double_t localx = TMath::Abs(vertex->GetXr(0)*cs + vertex->GetXr(1)*sn);
- if (localx>maxlocalx0) {
- maxlocalx0=localx;
- cs0 = cs; sn0=sn;
- }
- rfirst0[itrack0] = radius;
- }
- for (Int_t itrack1=0;itrack1<entries1;itrack1++){
- rfirst1[itrack1]=-1.;
- AliITStrackMI * htrack1 = (AliITStrackMI*)array1->At(itrack1);
- if (!htrack1) continue;
- if (htrack1->fConstrain) continue;
- if (i1<0){
- i1 = itrack1;
- track1 = htrack1;
- }
- Double_t cs = TMath::Cos(htrack1->fAlpha);
- Double_t sn = TMath::Sin(htrack1->fAlpha);
- //
- //
- Double_t x = htrack1->fX*cs - htrack1->fP0*sn;
- Double_t y = htrack1->fX*sn + htrack1->fP0*cs;
- Double_t radius = TMath::Sqrt(x*x+y*y);
- if (criticalradius<3 && radius>6&&htrack1->fNDeadZone<0.2) continue; //all clusters required
- if (criticalradius>10 && radius<6) continue; //causality
- Double_t localx = TMath::Abs(vertex->GetXr(0)*cs + vertex->GetXr(1)*sn);
- if (localx>maxlocalx1) {
- maxlocalx1=localx;
- cs1 = cs; sn1=sn;
- }
- rfirst1[itrack1] = radius;
- }
- //
- //
- //
- const Float_t radiuses[4]={4,6.5,15.03,24.};
- //
- //
- // find the best tracks after decay point
- Float_t bestquality =100000;
- Float_t bestradius=0;
- AliESDV0MI v0;
- Double_t vpos[3];
- Float_t v[3]={GetX(),GetY(),GetZ()};
- //
- //
- for (Int_t itrack0=0;itrack0<entries0;itrack0++){
- if (rfirst0[itrack0]<0) continue;
- AliITStrackMI * htrack0 = (AliITStrackMI*)array0->At(itrack0);
- if (!htrack0) continue;
- //
- for (Int_t itrack1=0;itrack1<entries1;itrack1++){
- if (rfirst1[itrack1]<0) continue;
- AliITStrackMI * htrack1 = (AliITStrackMI*)array1->At(itrack1);
- if (!htrack1) continue;
- if (TMath::Abs(rfirst0[itrack0]-rfirst1[itrack1])>1.) continue;
- if (htrack0->fClIndex[6-htrack0->fN]==htrack1->fClIndex[6-htrack1->fN]) continue; //sharing of last cluster not allowe
//
- if (htrack0->fNUsed+htrack1->fNUsed>0) continue; //sharing of clusters not allowed
+ pvertex->SetCausality(pb0,pb1,pa0,pa1);
//
- //
- v0.SetM(*htrack0);
- v0.SetP(*htrack1);
- // if (v0.Update(v)==0) continue;
- v0.Update(v);
- if (TMath::Min(rfirst0[itrack0],rfirst1[itrack1]) <v0.GetRr()-0.3) continue;
+ // Likelihood calculations - apply cuts
+ //
+ Bool_t v0OK = kTRUE;
+ Float_t p12 = pvertex->GetParamP()->GetParameter()[4]*pvertex->GetParamP()->GetParameter()[4];
+ p12 += pvertex->GetParamM()->GetParameter()[4]*pvertex->GetParamM()->GetParameter()[4];
+ p12 = TMath::Sqrt(p12); // "mean" momenta
+ Float_t sigmap0 = 0.0001+0.001/(0.1+pvertex->GetRr());
+ Float_t sigmap = 0.5*sigmap0*(0.6+0.4*p12); // "resolution: of point angle - as a function of radius and momenta
+
+ Float_t CausalityA = (1.0-pvertex->GetCausalityP()[0])*(1.0-pvertex->GetCausalityP()[1]);
+ Float_t CausalityB = TMath::Sqrt(TMath::Min(pvertex->GetCausalityP()[2],Float_t(0.7))*
+ TMath::Min(pvertex->GetCausalityP()[3],Float_t(0.7)));
//
+ Float_t Likelihood0 = (TMath::Exp(-pvertex->GetDistNorm())+0.1) *(pvertex->GetDist2()<0.5)*(pvertex->GetDistNorm()<5);
+
+ Float_t Likelihood1 = TMath::Exp(-(1.0001-pvertex->GetPointAngle())/sigmap)+
+ 0.4*TMath::Exp(-(1.0001-pvertex->GetPointAngle())/(4.*sigmap))+
+ 0.4*TMath::Exp(-(1.0001-pvertex->GetPointAngle())/(8.*sigmap))+
+ 0.1*TMath::Exp(-(1.0001-pvertex->GetPointAngle())/0.01);
//
- if (v0.GetDist2()>0.3) continue;
- if (v0.GetRr()<radiuses[1] && ( TMath::Abs(htrack0->fN+htrack0->fNDeadZone-htrack1->fN-htrack1->fNDeadZone)>0.5)) continue;
+ if (CausalityA<kCausality0Cut) v0OK = kFALSE;
+ if (TMath::Sqrt(Likelihood0*Likelihood1)<kLikelihood01Cut) v0OK = kFALSE;
+ if (Likelihood1<kLikelihood1Cut) v0OK = kFALSE;
+ if (TMath::Power(Likelihood0*Likelihood1*CausalityB,0.33)<kCombinedCut) v0OK = kFALSE;
+
//
- //if (v0.GetRr()<3. && (htrack0->fN+htrack0->fNDeadZone+htrack1->fN+htrack1->fNDeadZone)<11.7) continue;
- //if (v0.GetRr()<6. && (htrack0->fN+htrack0->fNDeadZone+htrack1->fN+htrack1->fNDeadZone)<9.7) continue;
- if (v0.GetRr()<3. && (htrack0->fN+htrack1->fN)<11.7) continue;
- if (v0.GetRr()<6. && (htrack0->fN+htrack1->fN)<9.7) continue;
- Double_t localx0=v0.GetXr(0)*cs0+v0.GetXr(1)*sn0;
- Double_t localx1=v0.GetXr(0)*cs1+v0.GetXr(1)*sn1;
- Double_t maxlocalx = TMath::Max(localx0,localx1);
- if (maxlocalx<3.4 && (htrack0->fN+htrack1->fN)<11.7) continue;
- if (maxlocalx<6.1 && (htrack0->fN+htrack1->fN)<9.7) continue;
//
- Float_t fnormdist = v0.GetDist2()/0.05;
- fnormdist +=(htrack0->fNormChi2[6-htrack0->fN]+htrack1->fNormChi2[6-htrack1->fN]);
- fnormdist +=3*(htrack0->fNUsed+htrack1->fNUsed);
- if (TMath::Min(rfirst0[itrack0],rfirst1[itrack1]) <v0.GetRr()+0.2){
- fnormdist +=(v0.GetRr()+0.2-TMath::Min(rfirst0[itrack0],rfirst1[itrack1]))/0.1;
- }
+ if (kTRUE){
+ Bool_t gold = TMath::Abs(TMath::Abs(track0->GetLabel())-TMath::Abs(track1->GetLabel()))==1;
+ cstream<<"It0"<<
+ "Tr0.="<<track0<< //best without constrain
+ "Tr1.="<<track1<< //best without constrain
+ "Tr0B.="<<track0b<< //best without constrain after vertex
+ "Tr1B.="<<track1b<< //best without constrain after vertex
+ "Tr0C.="<<htrackc0<< //best with constrain if exist
+ "Tr1C.="<<htrackc1<< //best with constrain if exist
+ "Tr0L.="<<track0l<< //longest best
+ "Tr1L.="<<track1l<< //longest best
+ "Esd0.="<<track0->fESDtrack<< // esd track0 params
+ "Esd1.="<<track1->fESDtrack<< // esd track1 params
+ "V0.="<<pvertex<< //vertex properties
+ "V0b.="<<&vertex2<< //vertex properties at "best" track
+ "ND0="<<normdist[itrack0]<< //normalize distance for track0
+ "ND1="<<normdist[itrack1]<< //normalize distance for track1
+ "Gold="<<gold<< //
+ // "RejectBase="<<rejectBase<< //rejection in First itteration
+ "OK="<<v0OK<<
+ "rmin="<<rmin<<
+ "sigmad="<<sigmad<<
+ "\n";
+ }
+ //if (rejectBase) continue;
//
- Float_t quality = fnormdist;
- if (quality<bestquality && v0.GetDist2()<vertex->GetDist2()){
- i0=itrack0;
- i1=itrack1;
- track0 =htrack0;
- track1 =htrack1;
- bestquality = quality;
- bestradius = v0.GetRr();
- vpos[0] = v0.GetXr(0);
- vpos[1] = v0.GetXr(1);
- vpos[2] = v0.GetXr(2);
+ pvertex->SetStatus(0);
+ // if (rejectBase) {
+ // pvertex->SetStatus(-100);
+ //}
+ if (pvertex->GetPointAngle()>kMinPointAngle2) {
+ if (v0OK){
+ AliV0vertex vertexjuri(*track0,*track1);
+ vertexjuri.SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());
+ pvertex->SetESDindexes(track0->fESDtrack->GetID(),track1->fESDtrack->GetID());
+ event->AddV0(&vertexjuri);
+ pvertex->SetStatus(100);
+ }
+ event->AddV0MI(pvertex);
}
}
}
//
//
- if (!track0||!track1) return kFALSE;
- if (track0->fNUsed+track1->fNUsed>0) return kFALSE; // sharing of clusters not allowed
- //
- //propagate to vertex
-
- Double_t alpha = TMath::ATan2(vpos[1],vpos[0]);
- //
- AliITStrackMI track0p = *track0;
- AliITStrackMI track1p = *track1;
- //
- // RefitAt(bestradius+0.5,&track0p,track0);
- //RefitAt(bestradius+0.5,&track1p,track1);
-
- if ( track0p.Propagate(alpha,bestradius+0.2)) {
- track0= &track0p;
- }
- if (track1p.Propagate(alpha,bestradius+0.2)){
- track1 = &track1p;
- }
- //
- v0.SetM(*track0);
- v0.SetP(*track1);
- v0.Update(v);
- if (v0.GetDist2()<vertex->GetDist2() && v0.GetRr()<20){
- vertex->SetM(*track0);
- vertex->SetP(*track1);
- vertex->Update(v);
- return kTRUE;
- }
- return kFALSE;
+ // delete temporary arrays
+ //
+ delete[] minPointAngle;
+ delete[] maxr;
+ delete[] minr;
+ delete[] norm;
+ delete[] normdist;
+ delete[] normdist1;
+ delete[] normdist0;
+ delete[] dist;
+ delete[] itsmap;
+ delete[] helixes;
+ delete pvertex;
}
-Double_t AliITStrackerMI::TestV0(AliHelix *helix1, AliHelix *helix2, AliESDV0MI *vertex, Double_t &rmin)
-{
- //
- // test the helixes for the distnce calculate vertex characteristic
- //
- rmin =0;
- Float_t distance1,distance2;
- AliHelix & dhelix1 = *helix1;
- Double_t pp[3],xx[3];
- dhelix1.GetMomentum(0,pp,0);
- dhelix1.Evaluate(0,xx);
- AliHelix &mhelix = *helix2;
- //
- //find intersection linear
- //
- Double_t phase[2][2],radius[2];
- Int_t points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
- Double_t delta1=10000,delta2=10000;
-
- if (points>0){
- rmin = radius[0];
- dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- dhelix1.LinearDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- }
- if (points==2){
- if (radius[1]<rmin) rmin = radius[1];
- dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- dhelix1.LinearDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- }
- rmin = TMath::Sqrt(rmin);
- distance1 = TMath::Min(delta1,delta2);
- vertex->SetDist1(TMath::Sqrt(distance1));
-
- //
- //find intersection parabolic
- //
- points = dhelix1.GetRPHIintersections(mhelix, phase, radius);
- delta1=10000,delta2=10000;
-
- if (points>0){
- dhelix1.ParabolicDCA(mhelix,phase[0][0],phase[0][1],radius[0],delta1);
- }
- if (points==2){
- dhelix1.ParabolicDCA(mhelix,phase[1][0],phase[1][1],radius[1],delta2);
- }
-
- distance2 = TMath::Min(delta1,delta2);
- vertex->SetDist2(TMath::Sqrt(distance2));
- if (distance2<100){
- if (delta1<delta2){
- //get V0 info
- dhelix1.Evaluate(phase[0][0],vertex->GetXrp());
- dhelix1.GetMomentum(phase[0][0],vertex->GetPPp());
- mhelix.GetMomentum(phase[0][1],vertex->GetPMp());
- dhelix1.GetAngle(phase[0][0],mhelix,phase[0][1],vertex->GetAnglep());
- vertex->SetRr(TMath::Sqrt(radius[0]));
- }
- else{
- dhelix1.Evaluate(phase[1][0],vertex->GetXrp());
- dhelix1.GetMomentum(phase[1][0],vertex->GetPPp());
- mhelix.GetMomentum(phase[1][1],vertex->GetPMp());
- dhelix1.GetAngle(phase[1][0],mhelix,phase[1][1],vertex->GetAnglep());
- vertex->SetRr(TMath::Sqrt(radius[1]));
- }
- }
- //
- //
- return vertex->GetDist2();
-}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff