TrigInDetTrackFitPar Class Reference

#include <TrigInDetTrackFitPar.h>

Collaboration diagram for TrigInDetTrackFitPar:

Public Types
enum	TrigSurfaceType { PERIGEE =0, BARREL =1, ENDCAP =2, UNDEFINED =3 }

Public Member Functions
	TrigInDetTrackFitPar ()
	Constructor for POOL only. More...
	TrigInDetTrackFitPar (const double a0, const double phi0, const double z0, const double eta, const double pT, const double ea0, const double ephi0, const double ez0, const double eeta, const double epT, const std::vector< double > *cov=0)
	Constructor for parameters on PERIGEE surface. More...
	TrigInDetTrackFitPar (const double a0, const double phi0, const double z0, const double eta, const double pT, const double ea0, const double ephi0, const double ez0, const double eeta, const double epT, const TrigSurfaceType t, const double c, const std::vector< double > *cov=0)
	Constructor for parameters on non-PERIGEE surface. More...
	TrigInDetTrackFitPar (const double a0, const double phi0, const double z0, const double eta, const double pT, const std::vector< double > *cov=0)
	Constructor for PERIGEE parameters without errors or covariance. More...
	TrigInDetTrackFitPar (const double a0, const double phi0, const double z0, const double eta, const double pT, const TrigSurfaceType t, const double c, const std::vector< double > *cov=0)
	Constructor for non-PERIGEE parameters without errors or covariance. More...
	TrigInDetTrackFitPar (const TrigInDetTrackFitPar &rhs)
	Copy constructor. More...
TrigInDetTrackFitPar &	operator= (TrigInDetTrackFitPar &&rhs)
	Move assignment. More...
	~TrigInDetTrackFitPar ()
	Destructor. More...
void	a0 (const double a0)
	Setter: transverse impact parameter. More...
void	z0 (const double z0)
	Setter: longitudinal impact parameter. More...
void	phi0 (const double phi0)
	Setter: azimuthal angle of the momentum. More...
void	eta (const double eta)
	Setter: pseudorapidity. More...
void	pT (const double pT)
	Setter: transverse momentum. More...
void	cov (const std::vector< double > *cov)
	Setter: covariance matrix of track parameters. More...
void	surfaceType (TrigSurfaceType s)
	Setter: surface type PERIGEE=0, BARREL=1, ENDCAP=2. More...
void	surfaceCoordinate (double c)
	Setter: surface reference coordinate for non-perigee surfaces. More...
double	a0 () const
	transverse impact parameter More...
double	z0 () const
	longitudinal impact parameter More...
double	phi0 () const
	azimuthal angle of the momentum More...
double	eta () const
	pseudorapidity More...
double	pT () const
	transverse momentum More...
double	ea0 () const
	variance of transverse impact parameter More...
double	ez0 () const
	variance of longitudinal impact parameter More...
double	ephi0 () const
	variance of azimuthal angle of the momentum More...
double	eeta () const
	variance of pseudorapidity More...
double	epT () const
	variance of transverse momentum More...
const std::vector< double > *	cov () const
	covariance (packed) of track parameters More...
TrigSurfaceType	surfaceType () const
	surface type More...
double	surfaceCoordinate () const
	surface reference coordinate (radius or z-position) for non-perigee parameters More...

Private Attributes
double	m_a0
	see detailed description below More...
double	m_phi0
	see detailed description below More...
double	m_z0
	see detailed description below More...
double	m_eta
	pseudorapidity More...
double	m_pT
	transverse momentum More...
double	m_ea0
	\( \sqrt{cov(a_0,a_0)}\) More...
double	m_ephi0
	\( \sqrt{cov(\phi_0,\phi_0)}\) More...
double	m_ez0
	\( \sqrt{cov(z_0,z_0)}\) More...
double	m_eeta
	\( \sqrt{cov(\eta,\eta)}\) More...
double	m_epT
	\( \sqrt{cov(p_T,p_T)}\) More...
const std::vector< double > *	m_cov
	covariance matrix packed as described below More...
TrigSurfaceType	m_surfaceType
	type of track parameters - perigee, barrel, or endcap More...
double	m_surfaceCoordinate
	barrel radius or z of endcap disk More...

Detailed Description

encapsulates LVL2 track parameters and covariance matrix The vector of track parameters consists of

\( a_0 \) , \( \phi_0 \), \( z_0 \), \( \eta \), \( p_T \)

The first three parameters are defined as follows

if m_surfaceType is PERIGEE - the default

\( a_0 \) : transverse impact parameter, a.k.a., \( d_0 \), the distance of the closest approach of a helix to the z-axis.

\( \phi_0 \) : momentum angle phi at the point of the closest approach

\( z_0 \) : longitudinal impact parameter, the z value at the point of the closest approach.

The convention for the sign of \( a_0 \) is the following. Let \( \Phi \) be the azimuthal angle to the perigee point. The sign of \( a_0 \) is then defined as positive if \( \Phi = \phi_0 + \frac{\pi}{2} \). Note that this convention is independent from particle charge sign.

if m_surfaceType is BARREL, radius is given by m_surfaceCoordinate

\( a_0 \) : Phi - azimuthal angle of the track position on the surface

\( \phi_0 \) : momentum angle phi in the global reference frame

\( z_0 \) : z-position (along the barrel axis)

if m_surfaceType is ENDCAP, surface is a disk orthogonal to the global z-axis z-coordinate of the disk is given by m_surfaceCoordinate

\( a_0 \) : Phi - azimuthal angle of the track position on the surface

\( \phi_0 \) : momentum angle phi in the global reference frame

\( z_0 \) : Rho - radial coordinate of the track position on the disk

Covariance matrix is stored in a std::vector<double>:

cov : vector of 15 numbers corresponding to the upper half of the covariance matrix, packed as follows: cov(a0,a0) -> cov(a0,phi0) -> cov(a0,z0) -> cov(a0,eta) -> cov(a0,pT) -> cov(phi0,phi0) -> cov(phi0,z0) -> cov(phi0,eta) -> cov(phi0,pT) -> cov(z0,z0) -> cov(z0,eta) -> cov(z0,pT) -> cov(eta,eta) -> cov(eta,pT) -> cov(pT,pT)

m_ea0, m_ephi0, m_ez0, m_eeta, m_epT - square roots out of corresponding diagonal elements of the covariance matrix

Note that pT is actually pT \( \times \) sign of particle charge

Definition at line 68 of file TrigInDetTrackFitPar.h.

Member Enumeration Documentation

TrigSurfaceType

enum TrigInDetTrackFitPar::TrigSurfaceType

Enumerator
PERIGEE
BARREL
ENDCAP
UNDEFINED

Definition at line 72 of file TrigInDetTrackFitPar.h.

{PERIGEE=0, BARREL=1, ENDCAP=2, UNDEFINED=3};

Constructor & Destructor Documentation

TrigInDetTrackFitPar() [1/6]

TrigInDetTrackFitPar::TrigInDetTrackFitPar ( )

inline

Constructor for POOL only.

Definition at line 75 of file TrigInDetTrackFitPar.h.

                          : 
    m_a0(0.0), m_phi0(0.0), m_z0(0.0),m_eta(0.0), m_pT(0.0), 
    m_ea0(0.0), m_ephi0(0.0), m_ez0(0.0), m_eeta(0.0), m_epT(0.0), 
    m_cov(NULL), m_surfaceType(PERIGEE), m_surfaceCoordinate(0.0)
    {};

TrigInDetTrackFitPar() [2/6]

TrigInDetTrackFitPar::TrigInDetTrackFitPar ( const double  a0, const double  phi0, const double  z0, const double  eta, const double  pT, const double  ea0, const double  ephi0, const double  ez0, const double  eeta, const double  epT, const std::vector< double > *  cov = 0  )

inline

Constructor for parameters on PERIGEE surface.

Definition at line 82 of file TrigInDetTrackFitPar.h.

                                            :
    m_a0(a0), m_phi0(phi0), m_z0(z0),
    m_eta(eta), m_pT(pT), m_ea0(ea0), m_ephi0(ephi0), m_ez0(ez0),
    m_eeta(eeta), m_epT(epT), m_cov(cov),m_surfaceType(PERIGEE), 
    m_surfaceCoordinate(0.0)
    {};

TrigInDetTrackFitPar() [3/6]

TrigInDetTrackFitPar::TrigInDetTrackFitPar ( const double  a0, const double  phi0, const double  z0, const double  eta, const double  pT, const double  ea0, const double  ephi0, const double  ez0, const double  eeta, const double  epT, const TrigSurfaceType  t, const double  c, const std::vector< double > *  cov = 0  )

inline

Constructor for parameters on non-PERIGEE surface.

Definition at line 101 of file TrigInDetTrackFitPar.h.

                                            :
    m_a0(a0), m_phi0(phi0), m_z0(z0),
    m_eta(eta), m_pT(pT), m_ea0(ea0), m_ephi0(ephi0), m_ez0(ez0),
    m_eeta(eeta), m_epT(epT), m_cov(cov), m_surfaceType(t), m_surfaceCoordinate(c)
    {};

TrigInDetTrackFitPar() [4/6]

TrigInDetTrackFitPar::TrigInDetTrackFitPar ( const double  a0, const double  phi0, const double  z0, const double  eta, const double  pT, const std::vector< double > *  cov = 0  )

inline

Constructor for PERIGEE parameters without errors or covariance.

Definition at line 120 of file TrigInDetTrackFitPar.h.

                                                        :
    m_a0(a0), m_phi0(phi0), m_z0(z0),
    m_eta(eta), m_pT(pT),
    m_ea0(0.0), m_ephi0(0.0), m_ez0(0.0), m_eeta(0.0), 
    m_epT(0.0),   m_cov(cov), m_surfaceType(PERIGEE), 
    m_surfaceCoordinate(0.0){ 
      if(cov!=NULL) { 
    if((*cov)[0]>=0.0) m_ea0 = sqrt((*cov)[0]); 
    if((*cov)[5]>=0.0) m_ephi0 = sqrt((*cov)[5]); 
    if((*cov)[9]>=0.0) m_ez0 = sqrt((*cov)[9]); 
    if((*cov)[12]>=0.0) m_eeta = sqrt((*cov)[12]);  
    if((*cov)[14]>=0.0) m_epT = sqrt((*cov)[14]);  
      } 
    } 

TrigInDetTrackFitPar() [5/6]

TrigInDetTrackFitPar::TrigInDetTrackFitPar ( const double  a0, const double  phi0, const double  z0, const double  eta, const double  pT, const TrigSurfaceType  t, const double  c, const std::vector< double > *  cov = 0  )

inline

Constructor for non-PERIGEE parameters without errors or covariance.

Definition at line 141 of file TrigInDetTrackFitPar.h.

                                                        :
    m_a0(a0), m_phi0(phi0), m_z0(z0),
    m_eta(eta), m_pT(pT), 
    m_ea0(0.0), m_ephi0(0.0), m_ez0(0.0), m_eeta(0.0), m_epT(0.0), m_cov(cov), m_surfaceType(t), 
    m_surfaceCoordinate(c)
    {
      if(cov!=NULL) { 
    if((*cov)[0]>=0.0) m_ea0 = sqrt((*cov)[0]); 
    if((*cov)[5]>=0.0) m_ephi0 = sqrt((*cov)[5]); 
    if((*cov)[9]>=0.0) m_ez0 = sqrt((*cov)[9]); 
    if((*cov)[12]>=0.0) m_eeta = sqrt((*cov)[12]);  
    if((*cov)[14]>=0.0) m_epT = sqrt((*cov)[14]);  
      } 
    }

TrigInDetTrackFitPar() [6/6]

TrigInDetTrackFitPar::TrigInDetTrackFitPar ( const TrigInDetTrackFitPar &  rhs )

inline

Copy constructor.

Definition at line 164 of file TrigInDetTrackFitPar.h.

    : m_a0 (rhs.m_a0),
      m_phi0 (rhs.m_phi0),
      m_z0 (rhs.m_z0),
      m_eta (rhs.m_eta),
      m_pT (rhs.m_pT),
      m_ea0 (rhs.m_ea0),
      m_ephi0 (rhs.m_ephi0),
      m_ez0 (rhs.m_ez0),
      m_eeta (rhs.m_eeta),
      m_epT (rhs.m_epT),
      m_surfaceType (rhs.m_surfaceType),
      m_surfaceCoordinate (rhs.m_surfaceCoordinate)
  {
    if (rhs.m_cov)
      m_cov = new std::vector<double> (*rhs.m_cov);
    else
      m_cov = nullptr;
  }

~TrigInDetTrackFitPar()

TrigInDetTrackFitPar::~TrigInDetTrackFitPar ( )

inline

Destructor.

Definition at line 209 of file TrigInDetTrackFitPar.h.

{if(m_cov) delete m_cov;}

Member Function Documentation

a0() [1/2]

double TrigInDetTrackFitPar::a0 ( ) const

inline

transverse impact parameter

Definition at line 232 of file TrigInDetTrackFitPar.h.

{ return m_a0;     }

a0() [2/2]

void TrigInDetTrackFitPar::a0 ( const double  a0 )

inline

Setter: transverse impact parameter.

Definition at line 214 of file TrigInDetTrackFitPar.h.

{ m_a0    = a0;    }

cov() [1/2]

const std::vector<double>* TrigInDetTrackFitPar::cov ( ) const

inline

covariance (packed) of track parameters

Definition at line 252 of file TrigInDetTrackFitPar.h.

{ return m_cov;    }

cov() [2/2]

void TrigInDetTrackFitPar::cov ( const std::vector< double > *  cov )

inline

Setter: covariance matrix of track parameters.

Definition at line 224 of file TrigInDetTrackFitPar.h.

{ m_cov = cov; }

ea0()

double TrigInDetTrackFitPar::ea0 ( ) const

inline

variance of transverse impact parameter

Definition at line 242 of file TrigInDetTrackFitPar.h.

{ return m_ea0;    }

eeta()

double TrigInDetTrackFitPar::eeta ( ) const

inline

variance of pseudorapidity

Definition at line 248 of file TrigInDetTrackFitPar.h.

{ return m_eeta;   }

ephi0()

double TrigInDetTrackFitPar::ephi0 ( ) const

inline

variance of azimuthal angle of the momentum

Definition at line 246 of file TrigInDetTrackFitPar.h.

{ return m_ephi0;  }

epT()

double TrigInDetTrackFitPar::epT ( ) const

inline

variance of transverse momentum

Definition at line 250 of file TrigInDetTrackFitPar.h.

{ return m_epT;    }

eta() [1/2]

double TrigInDetTrackFitPar::eta ( ) const

inline

pseudorapidity

Definition at line 238 of file TrigInDetTrackFitPar.h.

{ return m_eta;    }

eta() [2/2]

void TrigInDetTrackFitPar::eta ( const double  eta )

inline

Setter: pseudorapidity.

Definition at line 220 of file TrigInDetTrackFitPar.h.

{ m_eta = eta;     }

ez0()

double TrigInDetTrackFitPar::ez0 ( ) const

inline

variance of longitudinal impact parameter

Definition at line 244 of file TrigInDetTrackFitPar.h.

{ return m_ez0;    }

operator=()

TrigInDetTrackFitPar& TrigInDetTrackFitPar::operator= ( TrigInDetTrackFitPar &&  rhs )

inline

Move assignment.

Definition at line 185 of file TrigInDetTrackFitPar.h.

  {
    if (this != &rhs) {
      m_a0 = rhs.m_a0;
      m_phi0 = rhs.m_phi0;
      m_z0 = rhs.m_z0;
      m_eta = rhs.m_eta;
      m_pT = rhs.m_pT;
      m_ea0 = rhs.m_ea0;
      m_ephi0 = rhs.m_ephi0;
      m_ez0 = rhs.m_ez0;
      m_eeta = rhs.m_eeta;
      m_epT = rhs.m_epT;
      m_surfaceType = rhs.m_surfaceType;
      m_surfaceCoordinate = rhs.m_surfaceCoordinate;
 
      delete m_cov;
      m_cov = rhs.m_cov;
      rhs.m_cov = nullptr;
    }
    return *this;
  }

phi0() [1/2]

double TrigInDetTrackFitPar::phi0 ( ) const

inline

azimuthal angle of the momentum

Definition at line 236 of file TrigInDetTrackFitPar.h.

{ return m_phi0;   }

phi0() [2/2]

void TrigInDetTrackFitPar::phi0 ( const double  phi0 )

inline

Setter: azimuthal angle of the momentum.

Definition at line 218 of file TrigInDetTrackFitPar.h.

{ m_phi0   = phi0; }

pT() [1/2]

double TrigInDetTrackFitPar::pT ( ) const

inline

transverse momentum

Definition at line 240 of file TrigInDetTrackFitPar.h.

{ return m_pT;     }

pT() [2/2]

void TrigInDetTrackFitPar::pT ( const double  pT )

inline

Setter: transverse momentum.

Definition at line 222 of file TrigInDetTrackFitPar.h.

{ m_pT   = pT;     }

surfaceCoordinate() [1/2]

double TrigInDetTrackFitPar::surfaceCoordinate ( ) const

inline

surface reference coordinate (radius or z-position) for non-perigee parameters

Definition at line 256 of file TrigInDetTrackFitPar.h.

{ return m_surfaceCoordinate; }

surfaceCoordinate() [2/2]

void TrigInDetTrackFitPar::surfaceCoordinate ( double  c )

inline

Setter: surface reference coordinate for non-perigee surfaces.

Definition at line 228 of file TrigInDetTrackFitPar.h.

{ m_surfaceCoordinate=c; }

surfaceType() [1/2]

TrigSurfaceType TrigInDetTrackFitPar::surfaceType ( ) const

inline

surface type

Definition at line 254 of file TrigInDetTrackFitPar.h.

{ return m_surfaceType; }

surfaceType() [2/2]

void TrigInDetTrackFitPar::surfaceType ( TrigSurfaceType  s )

inline

Setter: surface type PERIGEE=0, BARREL=1, ENDCAP=2.

Definition at line 226 of file TrigInDetTrackFitPar.h.

{ m_surfaceType=s; }

z0() [1/2]

double TrigInDetTrackFitPar::z0 ( ) const

inline

longitudinal impact parameter

Definition at line 234 of file TrigInDetTrackFitPar.h.

{ return m_z0;     }

z0() [2/2]

void TrigInDetTrackFitPar::z0 ( const double  z0 )

inline

Setter: longitudinal impact parameter.

Definition at line 216 of file TrigInDetTrackFitPar.h.

{ m_z0     = z0;   }

Member Data Documentation

m_a0

double TrigInDetTrackFitPar::m_a0

private

see detailed description below

Definition at line 259 of file TrigInDetTrackFitPar.h.

m_cov

const std::vector<double>* TrigInDetTrackFitPar::m_cov

private

covariance matrix packed as described below

Definition at line 269 of file TrigInDetTrackFitPar.h.

m_ea0

double TrigInDetTrackFitPar::m_ea0

private

\( \sqrt{cov(a_0,a_0)}\)

Definition at line 264 of file TrigInDetTrackFitPar.h.

m_eeta

double TrigInDetTrackFitPar::m_eeta

private

\( \sqrt{cov(\eta,\eta)}\)

Definition at line 267 of file TrigInDetTrackFitPar.h.

m_ephi0

double TrigInDetTrackFitPar::m_ephi0

private

\( \sqrt{cov(\phi_0,\phi_0)}\)

Definition at line 265 of file TrigInDetTrackFitPar.h.

m_epT

double TrigInDetTrackFitPar::m_epT

private

\( \sqrt{cov(p_T,p_T)}\)

Definition at line 268 of file TrigInDetTrackFitPar.h.

m_eta

double TrigInDetTrackFitPar::m_eta

private

pseudorapidity

Definition at line 262 of file TrigInDetTrackFitPar.h.

m_ez0

double TrigInDetTrackFitPar::m_ez0

private

\( \sqrt{cov(z_0,z_0)}\)

Definition at line 266 of file TrigInDetTrackFitPar.h.

m_phi0

double TrigInDetTrackFitPar::m_phi0

private

see detailed description below

Definition at line 260 of file TrigInDetTrackFitPar.h.

m_pT

double TrigInDetTrackFitPar::m_pT

private

transverse momentum

Definition at line 263 of file TrigInDetTrackFitPar.h.

m_surfaceCoordinate

double TrigInDetTrackFitPar::m_surfaceCoordinate

private

barrel radius or z of endcap disk

Definition at line 271 of file TrigInDetTrackFitPar.h.

m_surfaceType

TrigSurfaceType TrigInDetTrackFitPar::m_surfaceType

private

type of track parameters - perigee, barrel, or endcap

Definition at line 270 of file TrigInDetTrackFitPar.h.

m_z0

double TrigInDetTrackFitPar::m_z0

private

see detailed description below

Definition at line 261 of file TrigInDetTrackFitPar.h.

---

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

• TrigInDetTrackFitPar.h