TrackBase_t< TTrackCluster > Struct Template Reference

Struct to hold variables from a track which contains a vector of data type like TrackCluster. More...

#include <PXDPerformanceStructs.h>

Collaboration diagram for TrackBase_t< TTrackCluster >:

Public Member Functions
	TrackBase_t ()
	Default constructor.
void	setTrackVariables (const TrackFitResult *tfrPtr, const ROOT::Math::XYZVector &ip)
	update track level variables from TrackFitResult More...
void	setValues (const RecoTrack &recoTrack, const ROOT::Math::XYZVector &ip=ROOT::Math::XYZVector(0, 0, 0), const std::string &recoTracksName="", const std::string &pxdInterceptsName="", const std::string &pxdTrackClustersName="PXDClustersFromTracks")
	Update values from a RecoTrack. More...

Public Attributes
float	d0
	Impact parameter in r-phi.
float	z0
	Impact parameter in z.
float	phi0
	Track direction in r-phi.
float	pt
	Transverse momentum.
float	tanLambda
	Tangent of the dip angle.
float	d0p
	Corrected impact parameter in r-phi.
float	z0p
	Corrected impact parameter in z.
unsigned short	nPXDHits
	Number of PXD Hits.
unsigned short	nSVDHits
	Number of SVD Hits.
unsigned short	nCDCHits
	Number of CDC Hits.
std::vector< TTrackCluster >	trackClusters
	Vector of track cluster structs.

Detailed Description

template<typename TTrackCluster>
struct Belle2::PXD::TrackBase_t< TTrackCluster >

Struct to hold variables from a track which contains a vector of data type like TrackCluster.

Definition at line 113 of file PXDPerformanceStructs.h.

Member Function Documentation

setTrackVariables()

void setTrackVariables	(	const TrackFitResult *	tfrPtr,
		const ROOT::Math::XYZVector &	ip
	)

update track level variables from TrackFitResult

Template implementation.

Parameters

tfrPtr	a pointer of TrackFitResult
ip	The interaction point for correcting d0 and z0

Definition at line 158 of file PXDPerformanceStructs.h.

    {
      if (!tfrPtr) {
        B2ERROR("Expect the track fit result. Found Nothing!");
      }
      nCDCHits = tfrPtr->getHitPatternCDC().getNHits();
      nSVDHits = tfrPtr->getHitPatternVXD().getNSVDHits();
      nPXDHits = tfrPtr->getHitPatternVXD().getNPXDHits();
      tanLambda = tfrPtr->getCotTheta();
      pt = tfrPtr->getMomentum().Rho();
      d0 = tfrPtr->getD0();
      z0 = tfrPtr->getZ0();
      phi0 = tfrPtr->getPhi0();
      d0p = d0;
      z0p = z0;
      if (ip != ROOT::Math::XYZVector(0, 0, 0)) {
        // get a helix and change coordinate origin to ip
        auto uHelix = tfrPtr->getUncertainHelix();
        uHelix.passiveMoveBy(ip);
        d0p = uHelix.getD0();
        z0p = uHelix.getZ0();
      }
    }

setValues()

void setValues	(	const RecoTrack &	recoTrack,
		const ROOT::Math::XYZVector &	ip = ROOT::Math::XYZVector(0, 0, 0),
		const std::string &	recoTracksName = "",
		const std::string &	pxdInterceptsName = "",
		const std::string &	pxdTrackClustersName = "PXDClustersFromTracks"
	)

Update values from a RecoTrack.

Parameters

recoTrack	A RecoTrack object.
ip	The interaction point for correcting d0 and z0
recoTracksName	Name of RecoTrack collection
pxdInterceptsName	Name of PXDIntercept collection
pxdTrackClustersName	Name of track matched PXDClusters

Definition at line 185 of file PXDPerformanceStructs.h.

---

The documentation for this struct was generated from the following file:

• pxd/utilities/include/PXDPerformanceStructs.h