TrkChi2DeflCut Class Reference

The tracker chi2 vs deflection cut. More...

#include <TrkChi2DeflCut.h>

Inheritance diagram for TrkChi2DeflCut:

List of all members.

Public Member Functions
	TrkChi2DeflCut (const char *cutName, float p0, float p1, float p2)
	Constructor.
	~TrkChi2DeflCut ()
	Destructor.
int	Check (PamLevel2 *event)
	The tracker chi2 vs deflection check.

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Detailed Description

The tracker chi2 vs deflection cut.

Events whose track has been fitted with a chi2 greater than Chi2(eta) are discarded. Chi2(eta) is a function which gives the maximum value of chi2 associated to a certain deflection eta; in current implementation it is parameterized as:

Chi2(eta) = p0 + p1 * eta^2 + p2 * eta ^4

where p0, p1 and p2 are parameters.

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Constructor & Destructor Documentation

TrkChi2DeflCut::TrkChi2DeflCut	(	const char *	cutName,
		float	p0,
		float	p1,
		float	p2
	)			[inline]

Constructor.

Parameters:

	cutName	The cut's name.
	p0	The constant term in Chi2(eta).
	p1	The coefficient or the quadratic term in Chi2(eta).
	p2	The coefficient or the quartic term in Chi2(eta).

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Member Function Documentation

int TrkChi2DeflCut::Check

(

PamLevel2 *

event

)

[virtual]

The tracker chi2 vs deflection check.

Parameters:

event

The event to analyze.

Returns:

CUTOK if chi2 < Chi2(eta).

0 if not

Implements PamCut.

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

• TrkCuts/TrkChi2DeflCut/TrkChi2DeflCut.h
• TrkCuts/TrkChi2DeflCut/TrkChi2DeflCut.cpp