Physics with Tau Lepton Final States in ATLAS

Physics involving tau lepton signatures form an integral part of the ATLAS physics programme. Tau lepton identification is used in many analyses at ATLAS such as searches for exotic phenomena and Higgs bosons, as well as Standard Model measurements of cross-sections. The performance of the reconstruction and identification algorithms for hadronically decaying tau leptons is reviewed. The cross-section measurement of the Z boson decaying to a pair of tau leptons is discussed, as well as the search for heavier ditau resonances such as supersymmetric Higgs bosons.