Identification of Hadronic Tau decays in ATLAS

Taus can be an important signature for Supersymmetry at the LHC. They can be produced copiously in the decays of supersymmetric particles. Measurement of their momentum and of the tau-tau invariant mass distribution would provide detailed infor- mation regarding the masses of supersymmetric particles. It is demonstrated using full simulation that it will be possible for ATLAS to make a cut on the reconstructed tau invariant mass using information from the tracking and the electromagnetic calorime- ter. The measured energy and momentum of taus that pass this selection can then be used to infer information anout the tau-tau invariant mass.