C++ STL includes. More...

#include <Track.hh>

Inheritance diagram for Track:

Public Member Functions
Step *	AddStep ()

void	Clear (const Option_t *opts="")

	ClassDef (Track, 1)

StHit *	firstHit () const
	First hit.

StHit *	lastHit () const
	Last hit.

void	merge (Track *track)
	Merge this track with that track.

bool	fit ()
	Perform linear fits in zx- and zy-plane. More...

double	chi2zx ()
	chi square of linear fit in zx-plane

double	chi2zy ()
	chi square of linear fit in zy-plane

int	ndf () const
	Number of degrees of freedom.

bool	ok () const
	Good track? More...

bool	accept (StHit *hit) const
	Is hit close enough to track? More...

double	length () const
	Track length. More...

double	x0 () const
	x-intercept at z = 0

double	y0 () const
	y-intercept at z = 0

double	dxdz () const
	dx/dz slope

double	dydz () const
	dy/dz slope

double	x0error () const
	Error on x-intercept.

double	y0error () const
	Error on y-intercept.

double	dxdzError () const
	Error on dx/dz slope.

double	dydzError () const
	Error on dy/dz slope.

	Track (Int_t sector, StTrack track, LaserB laser=0, Double_t z=0)

Int_t	Matched ()

void	SetPredictions (TGeoHMatrix Raft2Tpc=0, TGeoHMatrix Bundle2Tpc=0, TGeoHMatrix *Mirror2Tpc=0)

virtual void	Print (const Option_t *opt="") const

Public Attributes
Int_t	idTruth

Float_t	eta

Float_t	phi

Float_t	x

Float_t	y

Float_t	z

Float_t	px

Float_t	py

Float_t	pz

Float_t	mass

Float_t	charge

Int_t	nSteps

TRefArray	steps

Int_t	Flag

StVertexId	mType

StThreeVectorD	Vertex

Int_t	mSector

Int_t	mKey

Short_t	mFlag

UShort_t	mNumberOfPossiblePointsTpc

Float_t	mImpactParameter

Float_t	mLength

UShort_t	mNumberOfFitPointsTpc

UShort_t	mPrimaryVertexUsedInFit

Int_t	fNdEdx

Float_t	fdEdx

StHelixModel	fgeoIn

StHelixModel	fgeoOut

StDcaGeometry	fDca

Double32_t	fpTInv

Double32_t	fTheta

Double32_t	fPhi

StThreeVectorD	XyzP

StThreeVectorD	XyzPL

StThreeVectorD	XyzPU

StThreeVectorD	XyzPB

StThreeVectorD	XyzPM

StThreeVectorD	dirP

StThreeVectorD	dirPL

StThreeVectorD	dirPU

StThreeVectorD	dirPB

StThreeVectorD	dirPM

StThreeVectorD	dU

Double32_t	thePath

LaserB	Laser

Double32_t	dPhi

Double32_t	dTheta

Double32_t	zLastHit

Detailed Description

C++ STL includes.

Author: Pibero Djawotho piber.nosp@m.o@iu.nosp@m.cf.in.nosp@m.dian.nosp@m.a.edu Indiana University November 17, 2005 ROOT includes STAR includes Beam background track

Class to hold information about a beam background track. In particular, a Track contains all the hits associated with it and two linear fitters used to fit the track to lines in the zx- and zy-plane.

Definition at line 47 of file AgUStep.h.

Member Function Documentation

bool Track::accept ( StHit * hit ) const

Is hit close enough to track?

Returns: true if the radial distance in the xy-plane between the hit and a point on the line at the same z-location as the hit is less than 5 cm, false otherwise.

Definition at line 67 of file Track.cc.

References dxdz(), dydz(), x0(), and y0().

Referenced by StBeamBackMaker::Make().

bool Track::fit ( )

Perform linear fits in zx- and zy-plane.