Study of Tau Leptons from Top Quark Pairs in ATLAS

Top quark pair decay events resulting in final states containing τ leptons present interesting channels in the search for physics beyond the Standard Model. This document describes the in-progress analyses of two channels, τ+jets and τ+l in ttbar decays, for the case of a hadronically decaying τ lepton. The studied events are from 1.03 fb−1 of proton-proton collision data at √s = 7 TeV recorded by the ATLAS Collaboration at the LHC.