MuonBuilder Class Reference

Lazily builds collections of reconstructed muons. More...

#include <MuonBuilder.h>

Collaboration diagram for MuonBuilder:

[legend]

List of all members.

Public Member Functions
	MuonBuilder (Dataset &dataset, Options const &options, TabulatedRngEngine &rngEngine)
	Constructor.
std::vector< Muon > const &	Get () const override
	Alias for GetTight.
std::vector< Muon > const &	GetLoose () const
	Returns collection of loose muons.
std::vector< Muon > const &	GetTight () const
	Returns collection of tight muons.
Private Member Functions
void	ApplyRochesterCorrection (int index, Muon *muon, int trackerLayers) const
	Applies Rochester correction to momentum of the muon.
void	Build () const override
	Constructs muons for the current event.
std::optional< GenParticle >	FindGenMatch (Muon const &muon, double maxDR) const
	Finds matching generator-level muon using (eta, phi) metric.
Private Attributes
double	minPtLoose_
	Minimal pt for loose muons, GeV.
double	minPtTight_
	Minimal pt for tight muons, GeV.
double	maxRelIsoLoose_
	Maximal rel iso for loose muons.
double	maxRelIsoTight_
	Maximal rel iso for tight muons.
std::vector< Muon >	looseMuons_
	Collection of muons passing loose selection.
std::vector< Muon >	tightMuons_
	Collection of muons passing tight selection.
bool	isSim_
	Indicates whether running on simulation or data.
std::unique_ptr< RoccoR >	rochesterCorrection_
	Object to compute Rochester correction to muon pt.
TabulatedRandomGenerator	tabulatedRng_
	Random number generator.
TTreeReaderArray< float >	srcPt_
TTreeReaderArray< float >	srcEta_
TTreeReaderArray< float >	srcPhi_
TTreeReaderArray< float >	srcMass_
TTreeReaderArray< int >	srcCharge_
TTreeReaderArray< float >	srcIsolation_
TTreeReaderArray< bool >	srcIsPfMuon_
TTreeReaderArray< bool >	srcIsGlobalMuon_
TTreeReaderArray< bool >	srcIsTrackerMuon_
TTreeReaderArray< bool >	srcId_
TTreeReaderArray< int >	srcTrackerLayers_
std::unique_ptr < TTreeReaderArray< int > >	genPartId_
std::unique_ptr < TTreeReaderArray< float > >	genPartPt_
std::unique_ptr < TTreeReaderArray< float > >	genPartEta_
std::unique_ptr < TTreeReaderArray< float > >	genPartPhi_

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Detailed Description

Lazily builds collections of reconstructed muons.

For each event two collections of muons are constructed: tight and loose. They differ in the minimal pt cut as well as identification requirements. The tight collection is a subset of the loose one.

Rochester corrections for muon momenta are applied. The changes in momenta of loose muons are aggregated for GetSumMomentumShift.

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Constructor & Destructor Documentation

MuonBuilder::MuonBuilder	(	Dataset &	dataset,
		Options const &	options,
		TabulatedRngEngine &	rngEngine
	)

Constructor.

Parameters:

[in]	dataset	Dataset that will be processed.
[in]	options	Configuration options for the job.
[in]	rngEngine	Engine to construct TabulatedRandomGenerator.

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Member Function Documentation

void MuonBuilder::ApplyRochesterCorrection	(	int	index,
		Muon *	muon,
		int	trackerLayers
	)			const [private]

Applies Rochester correction to momentum of the muon.

Parameters:

[in]	index	Index of the muon to choose channel for tabulatedRng_.
[in,out]	muon	Muon to be corrected.
[in]	trackerLayers	Number of tracker layers with measurements for the given muon.

The Rochester correction is applied in place.

std::optional<GenParticle> MuonBuilder::FindGenMatch	(	Muon const &	muon,
		double	maxDR
	)			const [private]

Finds matching generator-level muon using (eta, phi) metric.

Parameters:

[in]	muon	Recontructed muon for which a generator-level match needs to be found.
[in]	maxDR	Maximal allowed distance in the (eta, phi) metric.

Returns:

An optional that contains the matching GenParicle. If no match is found in the specified cone, the optional is empty.

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

• include/MuonBuilder.h
• src/MuonBuilder.cc