engleski

Performance of tau-lepton reconstruction and identification in CMS

The performance of t -lepton reconstruction and identification algorithms is studied using a data sample of proton-proton collisions at p s = 7 TeV, corresponding to an integrated lu- minosity of 36 pb 1 collected with the CMS detector at the LHC. The t leptons that decay into one or three charged hadrons, zero or more short-lived neutral hadrons, and a neutrino are identi- fied using final-state particles reconstructed in the CMS tracker and electromagnetic calorimeter. The reconstruction efficiency of the algorithms is measured using t leptons produced in Z-boson decays. The t -lepton misidentification rates for jets and electrons are determined.

Si microstrip and pad detectors; Calorimeter methods; Detector modelling and sim- ulations I (interaction of radiation with matter; interaction of photons with matter; interaction of hadrons with matter; etc

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