Speaker
Description
Two-Higgs-Doublet-Models are theoretical extensions of the standard model that are able to account for some of its unanswered questions, for example the source of the matter/antimatter asymmetry in the Universe. They predict 5 bosons, the scalar/pseudoscalar H/A and the charged H+ and H-, alongside the h (the standard model Higgs boson). This talk will present the (currently blind) search for the decay of A/H → H+W- → btw- → bbWW (+charge conjugate) at the ATLAS detector, a decay mode which has never previously been searched for. The analysis is in a mature state, with the search covering the mass ranges 300 < mA < 1000 GeV and 200 < mH+ < 800 GeV. The recent tensions at 400 GeV between the ATLAS and CMS results in A→ tt searches therefore also motivate this search. This talk will cover the theory and motivations behind the search, and the current status of the analysis.