Speaker
Description
In this talk we present a search for resonant and non-resonant Higgs boson pair-production decaying to $\mathbf{b\bar{b}\tau^+\tau^-}$, considering the semi-leptonic and fully hadronic final states of the $\tau$-leptons. The analysis uses 36.1 fb$^{-1}$ of data collected by the ATLAS experiment at the LHC in 2015 and 2016 at a centre-of-mass energy of $\sqrt{s} =$ 13 TeV. The inclusion of the fully hadronic decay channel in this analysis further improves the sensitivity of the $hh \rightarrow\mathbf{b\bar{b}\tau^+\tau^-}$ decay in contrast with Run-1 results. Results for non-resonant Higgs pair-production are compared to Standard Model predictions. The data are also analyzed to probe resonant Higgs pair production, constraining a model with an extended Higgs sector based on two doublets and a Randall-Sundrum bulk graviton model.
