fsrPhotons_cff.py

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import FWCore.ParameterSet.Config as cms
from PhysicsTools.NanoAOD.common_cff import P3Vars,Var


leptonFSRphotons = cms.EDProducer("LeptonFSRProducer",
    deltaROverEt2Max = cms.double(0.05),
    eleEtaMax = cms.double(2.5),
    elePtMin = cms.double(5),
    electrons = cms.InputTag("linkedObjects","electrons"),
    isolation = cms.double(2),
    mightGet = cms.optional.untracked.vstring,
    muonEtaMax = cms.double(2.4),
    muonPtMin = cms.double(3),
    muons = cms.InputTag("linkedObjects","muons"),
    packedPFCandidates = cms.InputTag("packedPFCandidates"),
    photonPtMin = cms.double(2),
    slimmedElectrons = cms.InputTag("slimmedElectrons")
)

fsrTable = cms.EDProducer("SimpleCandidateFlatTableProducer",
    src = cms.InputTag("leptonFSRphotons"),
    cut = cms.string(""), #we should not filter on cross linked collections
    name = cms.string("FsrPhoton"),
    doc  = cms.string("Final state radiation photons emitted by muons or electrons"),
    singleton = cms.bool(False), # the number of entries is variable
    extension = cms.bool(False), # this is the main table for the muons
    variables = cms.PSet(P3Vars,
        relIso03 = Var("userFloat('relIso03')",float,doc="relative isolation in a 0.3 cone without CHS"),
        dROverEt2 = Var("userFloat('dROverEt2')",float,doc="deltaR to associated muon divided by photon et2"),
        muonIdx = Var("?hasUserCand('associatedMuon')?userCand('associatedMuon').key():-1",int, doc="index of associated muon"),
        electronIdx = Var("?hasUserCand('associatedElectron')?userCand('associatedElectron').key():-1",int, doc="index of associated electron")
        )
    )

fsrTablesTask =  cms.Task(leptonFSRphotons,fsrTable)