Higgs Boson Searches with Tau Leptons in the Final State in ATLAS

Results of the Higgs Boson searches with the ATLAS detector using data collected in 2011 at the Large Hadron Collider (LHC) in proton-proton collisions at 7 TeV center-of-mass energy are presented. The Standard Model Higgs searches are based on the analysis of events selected in a combination of different final states resulting from hadronic and leptonic tau decays. Results of neutral and charged Higgs bosons searches in the context of the Minimal Supersymmetric Extension of the Standard Model are also reported. The methods to estimate backgrounds using control samples in real data are presented. All observations are in agreement with the expectations from the background-only hypothesis. The exclusion limits at 95% confidence level for each final state as well as for combined channels are discussed.