Higgs Boson Searches with ATLAS

Strategies of searches for the Higgs boson with the ATLAS detector at the LHC are discussed using data from 2010 and 2011. A summary of the sensitivity of ATLAS to discover a Standard Model (SM) Higgs boson is shown for the following decay channels: H→γγ, H→WW→l+νl−ν¯, H→WW→lνqq¯, H→ZZ(⁎)→l+l−l+l−, H→ZZ(⁎)→l+l−qq¯. Some prospects for the Minimal Supersymmetric extension of the Standard Model (MSSM) Higgs searches in the H→τ+τ− channel are also included with as well as search for a generic scalar at low mass in the vicinity of the ϒ resonance, decaying to a pair of muons. Limits are given at the 95% confidence level (CL) on the production cross section relative to the Standard Model and to the MSSM predictions.