fastjet::BackgroundRescalingYPolynomial Class Reference

A background rescaling that is a simple polynomial in y. More...

#include <fastjet/tools/BackgroundEstimatorBase.hh>

Inheritance diagram for fastjet::BackgroundRescalingYPolynomial:

Collaboration diagram for fastjet::BackgroundRescalingYPolynomial:

List of all members.

Public Member Functions
	BackgroundRescalingYPolynomial (double a0=1, double a1=0, double a2=0, double a3=0, double a4=0)
	construct a background rescaling polynomial of the form a0 + a1*y + a2*y^2 + a3*y^3 + a4*y^4
virtual double	result (const PseudoJet &jet) const
	return the rescaling factor associated with this jet

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Detailed Description

A background rescaling that is a simple polynomial in y.

Definition at line 181 of file BackgroundEstimatorBase.hh.

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Constructor & Destructor Documentation

fastjet::BackgroundRescalingYPolynomial::BackgroundRescalingYPolynomial	(	double	a0 = 1,
		double	a1 = 0,
		double	a2 = 0,
		double	a3 = 0,
		double	a4 = 0
	)		[inline]

construct a background rescaling polynomial of the form a0 + a1*y + a2*y^2 + a3*y^3 + a4*y^4

The following values give a reasonable reproduction of the Pythia8 tune 4C background shape for pp collisions at sqrt(s)=7TeV:

• a0 = 1.157
• a1 = 0
• a2 = -0.0266
• a3 = 0
• a4 = 0.000048

Definition at line 196 of file BackgroundEstimatorBase.hh.

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

• tools/fastjet/tools/BackgroundEstimatorBase.hh
• tools/JetMedianBackgroundEstimator.cc