ORUtils::MuJetOverlapTool Class Reference

A tool implementing the recommended mu-jet overlap removal. More...

#include <MuJetOverlapTool.h>

Inheritance diagram for ORUtils::MuJetOverlapTool:
ORUtils::IOverlapTool ORUtils::BaseOverlapTool asg::IAsgTool asg::AsgTool asg::IAsgTool

List of all members.

Public Member Functions

 MuJetOverlapTool (const std::string &name)
 Create proper constructor for Athena.
virtual StatusCode findOverlaps (const xAOD::IParticleContainer &cont1, const xAOD::IParticleContainer &cont2) const override
 Identify overlapping muons and jets. First, low-track-multiplicity jets are flagged if they overlap with muons. Second, muons are flagged if they overlap with the remaining jets.
virtual StatusCode findOverlaps (const xAOD::MuonContainer &muons, const xAOD::JetContainer &jets) const
 Identify overlapping muons and jets. The above method calls this one.

Protected Member Functions

virtual StatusCode initializeDerived () override
 Initialize the tool.
const xAOD::VertexgetPrimVtx () const
 Retrieve the primary vertex used to count jet tracks.
int getNumTracks (const xAOD::Jet &jet, size_t vtxIdx) const
 Get the number of tracks in a jet w.r.t. requested vertex.
float getSumTrackPt (const xAOD::Jet &jet, size_t vtxIdx) const
 Get the sum trk pt in a jet w.r.t. requested vertex.

Detailed Description

A tool implementing the recommended mu-jet overlap removal.

This tool takes muons and jets and removes their overlaps based on various criteria including delta-R, jet track multiplicity, mu/jet PT ratio, JVT, and btagging results.

The procedure works as follows. 1. Remove non-btagged jets that overlap with muons. Matching is done with ghost association or flat delta-R. Jets are then rejected if they have low track multiplicity or if the muon has sufficient PT relative to the jet. 2. Remove muons from remaining non-pileup jets. Matching is done with either a flat delta-R or with the sliding delta-R cone (c1 + c2/pt).

To determine jet track multiplicity, the primary vertex is retrieved and used to query the NumTrkPt500 jet attribute.

Some special configuration properties UseSlidingDR - activate sliding dR cone (c1 + c2/muPt) SlidingDRC1 - c1 constant for sliding dR (default 0.04) SlidingDRC2 - c2 constant for sliding dR (default 10GeV) SlidingDRMaxCone - max cone size cutoff for sliding dR (default off) NumJetTrk - number of tracks required to give priorty to jet and remove the muon.

Todo:
TODO document all the new properties!

These properties are useful for specifying PV-related quantities so that the tool doesn't need to retrieve the PV: JetNumTrackDecoration - user-defined numTrk decoration JetSumTrackPTDecoration - user-defined sumTrkPt decoration

Author:
Steve Farrell <Steven.Farrell@cern.ch>

Constructor & Destructor Documentation

ORUtils::MuJetOverlapTool::MuJetOverlapTool ( const std::string &  name  ) 

Create proper constructor for Athena.

Standalone constructor


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