Joint HEP/Theory Seminar: A search for charged Higgs bosons decaying to a tau and neutrino

The experimental observation of charged Higgs bosons, whose existence is predicted by several models with an extended Higgs sector, would be an unambiguous signal for physics beyond the Standard Model (SM). This presentation describes an ongoing search for charged Higgs bosons in 36 fb^-1 of collision data at 13 TeV recorded by the ATLAS experiment at the Large Hadron Collider. The search considers charged Higgs production in association with a top quark, in which the Higgs decays to a tau and neutrino, with a combination of fully hadronic and semi-leptonic final states. A multivariate analysis strategy significantly improves sensitivity in comparison with prior ATLAS results.