SM and MSSM H→ττ in ATLAS

After the discovery of a Higgs boson at the LHC in γγ, ZZ and WW final states in 2012, the ATLAS collaboration also observes an excess of data over the predicted background in ττ final states, which is consistent with the decay of the discovered Higgs boson with mH≈125GeV. With an observed (expected) significance of 4.1σ (3.2σ), this is evidence for the coupling of this Higgs boson to fermions. The multivariate analysis of a dataset corresponding to 20.3fb−1 of pp collisions at is presented together with a separate cut-based analysis of the same dataset searching for h/H/A→τ+τ− decays in the context of the Minimal Super-Symmetric Standard Model (MSSM). No excess of data over the expected backgrounds is observed in this search for additional Higgs bosons, and exclusion limits on the production cross section times branching fraction are derived and interpreted in the MSSM parameter space for different scenarios.