ORUtils::SlidingDeltaRMatcher Class Reference

DR matching strategy where cone decreases with pt. More...

#include <DeltaRMatcher.h>

Inheritance diagram for ORUtils::SlidingDeltaRMatcher:

Collaboration diagram for ORUtils::SlidingDeltaRMatcher:

Public Member Functions
	SlidingDeltaRMatcher (double c1, double c2, double maxCone=std::numeric_limits< double >::max(), bool useRapidity=true)
	Constructor. More...
virtual bool	objectsMatch (const xAOD::IParticle &p1, const xAOD::IParticle &p2) const override
	Check if particles match in dR. More...

Private Attributes
double	m_c1
	Sliding dR constant c1. More...
double	m_c2
	Sliding dR constant c2. More...
double	m_maxCone
	Maximum sliding cone size. More...
bool	m_useRapidity
	Toggle rapidity usage. More...

Detailed Description

DR matching strategy where cone decreases with pt.

Calculates the dR cone w.r.t. the pt of the first argument as: dR = c1 + (c2/pt) Assumes that you're only using rapidity (for now).

Author

Steve Farrell Steve.nosp@m.n.Fa.nosp@m.rrell.nosp@m.@cer.nosp@m.n.ch

Definition at line 54 of file DeltaRMatcher.h.

Constructor & Destructor Documentation

SlidingDeltaRMatcher()

ORUtils::SlidingDeltaRMatcher::SlidingDeltaRMatcher	(	double	c1,
		double	c2,
		double	maxCone = std::numeric_limits<double>::max(),
		bool	useRapidity = true
	)

Constructor.

Parameters

[in]	c1	The offset constant (dimensionless).
[in]	c2	The pt factor constant (MeV).
[in]	maxCone	Cone size upper limit.

Definition at line 34 of file DeltaRMatcher.cxx.

    : m_c1(c1), m_c2(c2), m_maxCone(maxCone), m_useRapidity(useRapidity)
  {}

Member Function Documentation

objectsMatch()

bool ORUtils::SlidingDeltaRMatcher::objectsMatch ( const xAOD::IParticle &  p1, const xAOD::IParticle &  p2  ) const

overridevirtual

Check if particles match in dR.

The dR cone is calculated as dR = c1 + (c2/p1.pt())

Implements ORUtils::IParticleAssociator.

Definition at line 42 of file DeltaRMatcher.cxx.

  {
    // Calculate the dR cone to match with
    double dR = m_c1 + (m_c2 / p1.pt());
    // Apply upper limit to the dR match cone
    dR = std::min(dR, m_maxCone);
    return xAOD::P4Helpers::isInDeltaR(p1, p2, dR, m_useRapidity);
  }

Member Data Documentation

m_c1

double ORUtils::SlidingDeltaRMatcher::m_c1

private

Sliding dR constant c1.

Definition at line 75 of file DeltaRMatcher.h.

m_c2

double ORUtils::SlidingDeltaRMatcher::m_c2

private

Sliding dR constant c2.

Definition at line 77 of file DeltaRMatcher.h.

m_maxCone

double ORUtils::SlidingDeltaRMatcher::m_maxCone

private

Maximum sliding cone size.

Definition at line 79 of file DeltaRMatcher.h.

m_useRapidity

bool ORUtils::SlidingDeltaRMatcher::m_useRapidity

private

Toggle rapidity usage.

Definition at line 82 of file DeltaRMatcher.h.

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

• DeltaRMatcher.h
• DeltaRMatcher.cxx