Tau Physics at the LHC with ATLAS

The presence of tau leptons in the final state is an important signature in many Higgs boson and SUSY searches. With the ATLAS detector, hadronically decaying tau leptons can be reconstructed over a wide range of transverse energies. This talk will describe the tau reconstruction algorithm for hadronically decaying tau leptons at ATLAS. The performance of tau lepton identification is also discussed. A review of physics processes with tau leptons is given, ranging from Standard Model processes in early data, such as W and Z boson production, to searches for the Higgs boson and supersymmetry once Standard Model processes are well understood.