Search for resonant Higgs boson pair production in the $\mathrm{b\overline{b}}\tau^+\tau^-$ final state

A search for resonant Higgs boson pair production in proton-proton collisions in the $\mathrm{b\overline{b}}\tau^+\tau^-$ final state is presented. The search assumes the existence of a new heavy scalar boson H, which decays into a pair of the known h bosons. The search for $\mathrm{pp} \to \mathrm{H} \to \mathrm{hh} \to \mathrm{b\overline{b}}\tau^+\tau^-$ is performed using three $\tau\tau$ final states, $e\tau_{h}$, $\mu\tau_{h}$, and $\tau_{h}\tau_{h}$, where $\tau_{h}$ indicates a $\tau$ lepton decaying into hadrons. The analysis uses proton-proton collision data collected with the CMS detector at the LHC in 2015 at a centre-of-mass energy of $13~\mathrm{TeV}$ and corresponding to an integrated luminosity of $2.7~\mathrm{fb}^{-1}$.