Standard Model Higgs Boson Searches at ATLAS

A search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the Large Hadron Collider is presented in this document. The experimental results are based on data taken in 2011 and 2012 with an integrated luminosity of up to 4.9 fb-1 at sqrt(s) = 7 TeV and up to 5.9 fb-1 at sqrt(s) = 8 TeV. The search is performed in a mass range of 110 GeV to 600 GeV combining twelve different Higgs Boson decay channels. A Standard Model Higgs Boson is excluded at 95% confidence level within a mass range of 110 to 122.6 GeV and 129.7 to 558 GeV. An excess in data is seen at a mass of 126.5 GeV with a local significance of 5 sigma which is consistent with the production and decay of a Standard Model Higgs boson.