* *
*****************************************************************************/
-#include "AliVertex.h"
-#include "AliTracker.h"
+#include "AliESDVertex.h"
+#include "AliESDtrack.h"
+#include "AliLog.h"
#include <TObjArray.h>
+#include <TMatrixD.h>
class TTree;
-class AliVertex;
class AliESD;
class AliVertexerTracks : public TObject {
public:
AliVertexerTracks();
- AliVertexerTracks(Double_t xStart, Double_t yStart);
+ AliVertexerTracks(Double_t fieldkG);
virtual ~AliVertexerTracks();
- // computes the vertex from the set of tracks in the tree
- AliVertex* VertexForSelectedTracks(TTree *trkTree);
- AliVertex* VertexForSelectedTracks(TObjArray *trkArray);
-
- void SetMinTracks(Int_t n=2) { fMinTracks = n; return; }
- void SetVtxStart(Double_t x=0,Double_t y=0)
- { fNominalPos[0]=x; fNominalPos[1]=y; return; }
- void SetDCAcut(Double_t maxdca)
- { fDCAcut=maxdca; return;}
- void SetFinderAlgorithm(Int_t opt=1)
- { fAlgo=opt; return;}
-
- protected:
- Double_t GetField() const { return AliTracker::GetBz();}
-
- Int_t PrepareTracks(TTree &trkTree);
- void VertexFinder(Int_t optUseWeights=0);
- void HelixVertexFinder();
- void StrLinVertexFinderMinDist(Int_t OptUseWeights=0);
- static void GetStrLinDerivMatrix(Double_t *p0,Double_t *p1,Double_t m[][3],Double_t *d);
- static void GetStrLinDerivMatrix(Double_t *p0,Double_t *p1,Double_t *sigmasq,Double_t m[][3],Double_t *d);
+ AliESDVertex* FindPrimaryVertex(const AliESD *esdEvent);
+ AliESDVertex* VertexForSelectedTracks(TTree *trkTree,Bool_t optUseFitter=kTRUE, Bool_t optPropagate=kTRUE);
+ AliESDVertex* VertexForSelectedTracks(TObjArray *trkArray, Bool_t optUseFitter=kTRUE, Bool_t optPropagate=kTRUE);
+ AliESDVertex* RemoveTracksFromVertex(AliESDVertex *inVtx,TTree *trksTree,Float_t *diamondxy);
+ void SetConstraintOff() { fConstraint=kFALSE; return; }
+ void SetConstraintOn() { fConstraint=kTRUE; return; }
+ void SetDebug(Int_t optdebug=0) { fDebug=optdebug; return; }
+ void SetDCAcut(Double_t maxdca) { fDCAcut=maxdca; return; }
+ void SetFinderAlgorithm(Int_t opt=1) { fAlgo=opt; return; }
+ void SetITSRequired() { fITSin=kTRUE; return; }
+ void SetITSrefitRequired() { fITSin=kTRUE;fITSrefit=kTRUE; return; }
+ void SetITSNotRequired() { fITSrefit=kFALSE;fITSin=kFALSE; return; }
+ void SetITSrefitNotRequired() { fITSrefit=kFALSE; return; }
+ void SetMaxd0z0(Double_t maxd0z0=0.5) { fMaxd0z0=maxd0z0; return; }
+ void SetMinITSClusters(Int_t n=5) { fMinITSClusters = n; return; }
+ void SetMinTracks(Int_t n=1) { fMinTracks = n; return; }
+ void SetNSigmad0(Double_t n=3) { fNSigma=n; return; }
+ Double_t GetNSigmad0() const { return fNSigma; }
+ void SetOnlyFitter() { if(!fConstraint) AliFatal("Set constraint first!");
+ fOnlyFitter=kTRUE; return; }
+ void SetSkipTracks(Int_t n,Int_t *skipped);
+ void SetVtxStart(Double_t x=0,Double_t y=0,Double_t z=0)
+ { fNominalPos[0]=x; fNominalPos[1]=y; fNominalPos[2]=z; return; }
+ void SetVtxStartSigma(Double_t sx=3,Double_t sy=3,Double_t sz=6)
+ { fNominalCov[0]=sx*sx; fNominalCov[2]=sy*sy; fNominalCov[5]=sz*sz;
+ fNominalCov[1]=0.; fNominalCov[3]=0.; fNominalCov[4]=0.; return; }
+ void SetVtxStart(AliESDVertex *vtx);
static Double_t GetStrLinMinDist(Double_t *p0,Double_t *p1,Double_t *x0);
static Double_t GetDeterminant3X3(Double_t matr[][3]);
+ static void GetStrLinDerivMatrix(Double_t *p0,Double_t *p1,Double_t (*m)[3],Double_t *d);
+ static void GetStrLinDerivMatrix(Double_t *p0,Double_t *p1,Double_t *sigmasq,Double_t (*m)[3],Double_t *d);
+ static AliVertex TrackletVertexFinder(TClonesArray *lines, Int_t optUseWeights=0);
+ void SetFieldkG(Double_t field=-999.) { fFieldkG=field; return; }
+ Double_t GetFieldkG() const {
+ if(fFieldkG<-99.) AliFatal("Field value not set");
+ return fFieldkG; }
- AliVertex fVert; // vertex after vertex finder
- Double_t fNominalPos[2]; // initial knowledge on vertex position
+ protected:
+ void HelixVertexFinder();
+ void OneTrackVertFinder();
+ Int_t PrepareTracks(TTree &trkTree,Int_t optImpParCut);
+ Bool_t TrackToPoint(AliESDtrack *t,
+ TMatrixD &ri,TMatrixD &wWi) const;
+ void VertexFinder(Int_t optUseWeights=0);
+ void VertexFitter(Bool_t useConstraint=kFALSE);
+ void StrLinVertexFinderMinDist(Int_t optUseWeights=0);
+ void TooFewTracks(const AliESD *esdEvent);
+
+
+ AliVertex fVert; // vertex after vertex finder
+ AliESDVertex *fCurrentVertex; // ESD vertex after fitter
+ Double_t fFieldkG; // z component of field (kGauss)
+ Double_t fNominalPos[3]; // initial knowledge on vertex position
+ Double_t fNominalCov[6]; // initial knowledge on vertex position
+ Bool_t fConstraint; // true when "mean vertex" was set in
+ // fNominal ... and must be used in the fit
+ Bool_t fOnlyFitter; // primary with one fitter shot only
+ // (use only with beam constraint)
Int_t fMinTracks; // minimum number of tracks
+ Int_t fMinITSClusters; // minimum number of ITS clusters per track
TObjArray fTrkArray; // array with tracks to be processed
+ Int_t *fTrksToSkip; // tracks to be skipped for find and fit
+ Int_t fNTrksToSkip; // number of tracks to be skipped
Double_t fDCAcut; // maximum DCA between 2 tracks used for vertex
Int_t fAlgo; // option for vertex finding algorythm
+ Double_t fNSigma; // number of sigmas for d0 cut in PrepareTracks()
+ Double_t fMaxd0z0; // value [mm] for sqrt(d0d0+z0z0) cut
+ // in PrepareTracks(1) if fConstraint=kFALSE
+ Bool_t fITSin; // if kTRUE (default), use only kITSin tracks
+ // if kFALSE, use all tracks (also TPC only)
+ Bool_t fITSrefit; // if kTRUE (default), use only kITSrefit tracks
+ // if kFALSE, use all tracks (also TPC only)
+ Int_t fDebug; //! debug flag - verbose printing if >0
// fAlgo=1 (default) finds minimum-distance point among all selected tracks
// approximated as straight lines
// and uses errors on track parameters as weights
// fAlgo=5 finds the average point among DCA points of all pairs of tracks
// approximated as straight lines
+ private:
+ AliVertexerTracks(const AliVertexerTracks & source);
+ AliVertexerTracks & operator=(const AliVertexerTracks & source);
- ClassDef(AliVertexerTracks,1) // 3D Vertexing with ESD tracks
+ ClassDef(AliVertexerTracks,7) // 3D Vertexing with ESD tracks
};
#endif
-
-
-
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff