PESA::T2Track Class Reference

#include <T2Track.h>

Collaboration diagram for PESA::T2Track:

Public Member Functions
	T2Track (const Trk::Track &track)
	T2Track (const T2Track &track)=default
double	Pt () const
double	Eta () const
double	Phi () const
double	Z0 () const
double	D0 () const
double	Z0err () const
double	D0err () const
double	NDF () const
double	Qual () const
double	Chi2Prob () const
int	SiHits () const
int	PIXHits () const
int	SCTHits () const
int	TRTHits () const

Static Private Member Functions
static double	trackChi2Prob (int ndf, double chi2)

Private Attributes
double	m_Pt
double	m_Eta
double	m_Phi
double	m_Z0
double	m_D0
double	m_Z0err
double	m_D0err
double	m_NDF
double	m_Qual
double	m_Chi2Prob
int	m_SiHits
int	m_PIXHits
int	m_SCTHits
int	m_TRTHits

Detailed Description

Definition at line 32 of file T2Track.h.

Constructor & Destructor Documentation

T2Track() [1/2]

PESA::T2Track::T2Track ( const Trk::Track & track )

inline

Definition at line 37 of file T2Track.h.

    {
 
      const Trk::TrackParameters* trackPars = track.perigeeParameters();
      if (trackPars) {
        m_D0 = trackPars->parameters()[Trk::d0];
        m_Z0 = trackPars->parameters()[Trk::z0];
        if (trackPars->covariance()) {
          m_D0err = Amg::error(*(trackPars->covariance()),Trk::d0);
          m_Z0err = Amg::error(*(trackPars->covariance()),Trk::z0);
        }
        m_Phi = trackPars->parameters()[Trk::phi0];
        float theta = trackPars->parameters()[Trk::theta];
        m_Eta = -log(tan(0.5*theta));
        float qOverP = trackPars->parameters()[Trk::qOverP];
        m_Pt = std::abs(std::sin(theta)/qOverP)/Gaudi::Units::GeV;
 
        const Trk::FitQuality* fq = track.fitQuality();
        m_Qual = 1e8;
        if (fq) {
          if(fq->numberDoF()!=0) {
            m_Qual = fq->chiSquared()/fq->numberDoF();
          }
        }
        int nPix=0;
        int nSct=0;
        if( track.trackSummary() != nullptr){
          nPix =    track.trackSummary()->get(Trk::numberOfPixelHits);
          nSct =  track.trackSummary()->get(Trk::numberOfSCTHits);
        } else {
          for(auto tSOS = track.trackStateOnSurfaces()->begin();
              tSOS!=track.trackStateOnSurfaces()->end(); ++tSOS) {
            if ((*tSOS)->type(Trk::TrackStateOnSurface::Perigee) == false) {
              const Trk::FitQualityOnSurface& fq =  (*tSOS)->fitQualityOnSurface();
              if(!fq) continue;
              int nd = fq.numberDoF();
              if(nd==2) nPix++;
              if(nd==1) nSct++;
            }
          }
        }
        m_PIXHits = nPix;
        m_SCTHits = nSct/2;
        m_SiHits = m_PIXHits + m_SCTHits;
        m_NDF = (m_PIXHits + m_SCTHits)*2 - 5;
        m_TRTHits = 0; //for now: FTF tracks have no TRT extension in any case
      }
      m_Chi2Prob = -1;
      const double chi2 = m_Qual * m_NDF;
      if ( m_NDF  > 0  &&  chi2 > 0. && ! std::isinf( chi2 ) )
        {
          m_Chi2Prob = TMath::Prob(chi2,m_NDF);
        }
    }

T2Track() [2/2]

PESA::T2Track::T2Track ( const T2Track & track )

default

Member Function Documentation

Chi2Prob()

double PESA::T2Track::Chi2Prob ( ) const

inline

Definition at line 105 of file T2Track.h.

{ return m_Chi2Prob; }

D0()

double PESA::T2Track::D0 ( ) const

inline

Definition at line 100 of file T2Track.h.

{ return m_D0      ; }

D0err()

double PESA::T2Track::D0err ( ) const

inline

Definition at line 102 of file T2Track.h.

{ return m_D0err   ; }

Eta()

double PESA::T2Track::Eta ( ) const

inline

Definition at line 97 of file T2Track.h.

{ return m_Eta     ; }

NDF()

double PESA::T2Track::NDF ( ) const

inline

Definition at line 103 of file T2Track.h.

{ return m_NDF     ; }

Phi()

double PESA::T2Track::Phi ( ) const

inline

Definition at line 98 of file T2Track.h.

{ return m_Phi     ; }

PIXHits()

int PESA::T2Track::PIXHits ( ) const

inline

Definition at line 107 of file T2Track.h.

{ return m_PIXHits ; }

Pt()

double PESA::T2Track::Pt ( ) const

inline

Definition at line 96 of file T2Track.h.

{ return m_Pt      ; }

Qual()

double PESA::T2Track::Qual ( ) const

inline

Definition at line 104 of file T2Track.h.

{ return m_Qual    ; }

SCTHits()

int PESA::T2Track::SCTHits ( ) const

inline

Definition at line 108 of file T2Track.h.

{ return m_SCTHits ; }

SiHits()

int PESA::T2Track::SiHits ( ) const

inline

Definition at line 106 of file T2Track.h.

{ return m_SiHits  ; }

trackChi2Prob()

double PESA::T2Track::trackChi2Prob ( int ndf, double chi2 )

staticprivate

TRTHits()

int PESA::T2Track::TRTHits ( ) const

inline

Definition at line 109 of file T2Track.h.

{ return m_TRTHits ; }

Z0()

double PESA::T2Track::Z0 ( ) const

inline

Definition at line 99 of file T2Track.h.

{ return m_Z0      ; }

Z0err()

double PESA::T2Track::Z0err ( ) const

inline

Definition at line 101 of file T2Track.h.

{ return m_Z0err   ; }

Member Data Documentation

m_Chi2Prob

double PESA::T2Track::m_Chi2Prob

private

Definition at line 125 of file T2Track.h.

m_D0

double PESA::T2Track::m_D0

private

Definition at line 120 of file T2Track.h.

m_D0err

double PESA::T2Track::m_D0err

private

Definition at line 122 of file T2Track.h.

m_Eta

double PESA::T2Track::m_Eta

private

Definition at line 117 of file T2Track.h.

m_NDF

double PESA::T2Track::m_NDF

private

Definition at line 123 of file T2Track.h.

m_Phi

double PESA::T2Track::m_Phi

private

Definition at line 118 of file T2Track.h.

m_PIXHits

int PESA::T2Track::m_PIXHits

private

Definition at line 127 of file T2Track.h.

m_Pt

double PESA::T2Track::m_Pt

private

Definition at line 116 of file T2Track.h.

m_Qual

double PESA::T2Track::m_Qual

private

Definition at line 124 of file T2Track.h.

m_SCTHits

int PESA::T2Track::m_SCTHits

private

Definition at line 128 of file T2Track.h.

m_SiHits

int PESA::T2Track::m_SiHits

private

Definition at line 126 of file T2Track.h.

m_TRTHits

int PESA::T2Track::m_TRTHits

private

Definition at line 129 of file T2Track.h.

m_Z0

double PESA::T2Track::m_Z0

private

Definition at line 119 of file T2Track.h.

m_Z0err

double PESA::T2Track::m_Z0err

private

Definition at line 121 of file T2Track.h.

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

• T2Track.h