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.
virtual StatusCode	setObjectTypes (xAODType::ObjectType type1, xAODType::ObjectType type2) override
	Set the object types to be used in the association.
virtual bool	objectsMatch (columnar::Particle1Id p1, columnar::Particle2Id p2, bool swapArgs=false) const override
	Check if particles match in dR.
bool	objectsMatch (columnar::Particle2Id p2, columnar::Particle1Id p1) const

Private Attributes
double	m_c1
	Sliding dR constant c1.
double	m_c2
	Sliding dR constant c2.
double	m_maxCone
	Maximum sliding cone size.
bool	m_useRapidity
	Toggle rapidity usage.
columnar::MomentumAccessors< columnar::ContainerId::particle1 >	m_momAcc1
	Columnar accessors.
columnar::MomentumAccessors< columnar::ContainerId::particle2 >	m_momAcc2

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 67 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 43 of file DeltaRMatcher.cxx.

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

Member Function Documentation

objectsMatch() [1/2]

bool ORUtils::IParticleAssociator::objectsMatch ( columnar::Particle2Id p2, columnar::Particle1Id p1 ) const

inlineinherited

Definition at line 37 of file IObjectAssociator.h.

      { return objectsMatch(p1, p2, true); }

objectsMatch() [2/2]

bool ORUtils::SlidingDeltaRMatcher::objectsMatch ( columnar::Particle1Id p1, columnar::Particle2Id p2, bool swapArgs = false ) 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 59 of file DeltaRMatcher.cxx.

  {
    // Calculate the dR cone to match with
    double pt1 = swapArgs ? m_momAcc2.pt(p2) : m_momAcc1.pt(p1);
    double dR = m_c1 + (m_c2 / pt1);
    // Apply upper limit to the dR match cone
    dR = std::min(dR, m_maxCone);
    return columnar::isInDeltaR(m_momAcc1, p1, m_momAcc2, p2, dR, m_useRapidity);
  }

setObjectTypes()

StatusCode ORUtils::SlidingDeltaRMatcher::setObjectTypes ( xAODType::ObjectType type1, xAODType::ObjectType type2 )

overridevirtual

Set the object types to be used in the association.

Implements ORUtils::IParticleAssociator.

Definition at line 48 of file DeltaRMatcher.cxx.

  {
    columnar::resetObjectType (m_momAcc1, *this, type1);
    columnar::resetObjectType (m_momAcc2, *this, type2);
    return StatusCode::SUCCESS;
  }

Member Data Documentation

m_c1

double ORUtils::SlidingDeltaRMatcher::m_c1

private

Sliding dR constant c1.

Definition at line 92 of file DeltaRMatcher.h.

m_c2

double ORUtils::SlidingDeltaRMatcher::m_c2

private

Sliding dR constant c2.

Definition at line 94 of file DeltaRMatcher.h.

m_maxCone

double ORUtils::SlidingDeltaRMatcher::m_maxCone

private

Maximum sliding cone size.

Definition at line 96 of file DeltaRMatcher.h.

m_momAcc1

columnar::MomentumAccessors<columnar::ContainerId::particle1> ORUtils::SlidingDeltaRMatcher::m_momAcc1

private

Columnar accessors.

Definition at line 102 of file DeltaRMatcher.h.

m_momAcc2

columnar::MomentumAccessors<columnar::ContainerId::particle2> ORUtils::SlidingDeltaRMatcher::m_momAcc2

private

Definition at line 103 of file DeltaRMatcher.h.

m_useRapidity

bool ORUtils::SlidingDeltaRMatcher::m_useRapidity

private

Toggle rapidity usage.

Definition at line 99 of file DeltaRMatcher.h.

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

• DeltaRMatcher.h
• DeltaRMatcher.cxx