Lepton isolation
= Lepton isolation
Lepton <Lepton isolation>[isolation] restricts additional track <momentum> or <Particle calorimeter>[calorimeter] <energy> near a reconstructed lepton. It helps distinguish prompt leptons from <jets> and heavy-hadron decays. Detector acceptance, nearby signal particles and collision pileup affect its efficiency; a <Particle isolation>[isolated] <photon> uses a related <Particle isolation>[isolation] requirement rather than being a lepton.