Tau Reconstruction and Identification Performance at ATLAS

This poster shows the performance of the reconstruction algorithm and identification methods for hadronically decaying tau leptons in ATLAS. The efficiency for tau lepton identification is shown, along with their dependence on various kinematic variables. Furthermore, the fake rates are measured in various samples enriched with jet backgrounds, and the identification efficiency is measured in a sample of W->tau nu decays. We also show the observation of Z->tau tau production in both the tau->e tau->had and tau->mu tau->had channels.