Search for non-resonant Higgs boson pair production in the bbtautau final state using 2016 data

A search for non-resonant Higgs boson pair production in the $\mathrm{b\overline{b}}\tau^+\tau^-$ final state is presented. The search is performed using three $\tau\tau$ final states, $e\tau_{\rm h}, \mu\tau_{\rm h}$, and $\tau_{\rm h}\tau_{\rm h}$, where $e$ and $\mu$ indicate a $\tau$ lepton decaying to lighter leptons and $\tau_{\rm h}$ indicates a $\tau$ decay involving hadrons. The analysis uses proton-proton collision data collected in 2016 at $13~\mathrm{TeV}$ and corresponding to an integrated luminosity of $12.9~\mathrm{fb}^{-1}$.