FourHitVariables Class Reference

Class that allows the calculation of simple variables to estimate the quality of two triplets of hits using four hits. More...

#include <FourHitVariables.h>

Collaboration diagram for FourHitVariables:

Public Member Functions
	FourHitVariables ()
	basic constructor
	FourHitVariables (const B2Vector3D &oHit, const B2Vector3D &ocHit, const B2Vector3D &icHit, const B2Vector3D &iHit)
	actual useful constructor More...
void	setHits (const B2Vector3D &oHit, const B2Vector3D &ocHit, const B2Vector3D &icHit, const B2Vector3D &iHit)
	Set hits if not given in constructor of if they need to be changed. More...
double	getCircleRadiusDifference ()
	calculates dpt-value (dpt= difference in transverse momentum of 2 subsets of the hits), returning unit: cm
double	getCircleCenterPositionDifference ()
	calculates the distance between the estimated circle centers (using 2 subsets of given hits) in the xy-plane, returning unit: cm
double	getDeltaPT ()
	calculates dpt-value (dpt= difference in transverse momentum of 2 subsets of the hits), returning unit: GeV/c
void	setBFieldZ (const double bfieldZ=1.5)
	Set the B-Field value used for pT calculations. More...

Private Attributes
double	m_BFieldZ = 1.5
	BField along z to estimate pT.
B2Vector3D	m_oHit
	outermost hit position
B2Vector3D	m_ocHit
	second-to-outer hit position
B2Vector3D	m_icHit
	second-to-inner hit position
B2Vector3D	m_iHit
	innermost hit position
ThreeHitVariables	m_outerThreeHitVariables
	ThreeHitVariables getter for the outer three hits.
ThreeHitVariables	m_innerThreeHitVariables
	ThreeHitVariables getter for the inner three hits.

Detailed Description

Class that allows the calculation of simple variables to estimate the quality of two triplets of hits using four hits.

Definition at line 24 of file FourHitVariables.h.

Constructor & Destructor Documentation

FourHitVariables()

FourHitVariables ( const B2Vector3D &  oHit, const B2Vector3D &  ocHit, const B2Vector3D &  icHit, const B2Vector3D &  iHit  )

inline

actual useful constructor

Parameters

oHit	B2Vector3D of the outer hit used for calculating the single variables
ocHit	B2Vector3D of the second-outer hit used for calculating the single variables
icHit	B2Vector3D of the second-inner hit used for calculating the single variables
iHit	B2Vector3D of the inner hit used for calculating the single variables

Definition at line 35 of file FourHitVariables.h.

                                                                                                                         :
        m_oHit(oHit), m_ocHit(ocHit), m_icHit(icHit), m_iHit(iHit)
      {
        m_outerThreeHitVariables = ThreeHitVariables(oHit, ocHit, icHit);
        m_innerThreeHitVariables = ThreeHitVariables(ocHit, icHit, iHit);
      };

Member Function Documentation

setBFieldZ()

void setBFieldZ ( const double  bfieldZ = 1.5 )

inline

Set the B-Field value used for pT calculations.

Parameters

bfieldZ

B-Field value to be used

Definition at line 101 of file FourHitVariables.h.

setHits()

void setHits ( const B2Vector3D &  oHit, const B2Vector3D &  ocHit, const B2Vector3D &  icHit, const B2Vector3D &  iHit  )

inline

Set hits if not given in constructor of if they need to be changed.

Parameters

oHit	B2Vector3D of the outer hit used for calculating the single variables
ocHit	B2Vector3D of the second-outer hit used for calculating the single variables
icHit	B2Vector3D of the second-inner hit used for calculating the single variables
iHit	B2Vector3D of the inner hit used for calculating the single variables

Definition at line 47 of file FourHitVariables.h.

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

• tracking/vxdHoughTracking/filters/pathFilters/include/FourHitVariables.h