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	setValues (const RecoTrack &recoTrack, const TVector3 &ip=TVector3(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

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 118 of file PXDPerformanceStructs.h.

Member Function Documentation

setValues()

void setValues	(	const RecoTrack &	recoTrack,
		const TVector3 &	ip = TVector3(0, 0, 0),
		const std::string	recoTracksName = "",
		const std::string	pxdInterceptsName = "",
		const std::string	pxdTrackClustersName = "PXDClustersFromTracks"
	)

Update values from a RecoTrack.

Template implementation.

Parameters

recoTrack	A RecoTrack object.
ip	The interaction point for correcting d0 and z0

Definition at line 153 of file PXDPerformanceStructs.h.

                     {
        B2ERROR("Expect a track for fitted recotracks. Found nothing!");
      }
 
      // get trackFitResult pointer
      auto tfrPtr = trackPtr->getTrackFitResultWithClosestMass(Const::pion);
      if (!tfrPtr) {
        B2ERROR("expect a track fit result for pion. Found Nothing!");
      }
      nCDCHits = tfrPtr->getHitPatternCDC().getNHits();
      nSVDHits = tfrPtr->getHitPatternVXD().getNSVDHits();
      nPXDHits = tfrPtr->getHitPatternVXD().getNPXDHits();
      tanLambda = tfrPtr->getCotTheta();
      pt = tfrPtr->getMomentum().Perp();
      d0 = tfrPtr->getD0();
      z0 = tfrPtr->getZ0();
      phi0 = tfrPtr->getPhi0();
      d0p = d0;
      z0p = z0;
      if (ip != TVector3(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();
      }
 
      //RelationVector<PXDIntercept> pxdIntercepts = recoTrack.getRelationsTo<PXDIntercept>();
      auto pxdIntercepts = recoTrack.getRelationsTo<PXDIntercept>(pxdInterceptsName);
      for (auto& pxdIntercept : pxdIntercepts) {
        TTrackCluster temp;
        // Only push a TrackCluster when setValues succeeds
        if (temp.setValues(pxdIntercept, recoTracksName, pxdTrackClustersName))
          trackClusters.push_back(temp);
      }
    }
 
    //} // end namespace Tuple
  } // end namespace PXD
} // end namespace Belle2

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

• pxd/utilities/include/PXDPerformanceStructs.h