Search for new physics in a boosted hadronic monotop final state using $12.9~\mathrm{fb}^{-1}$ of $\sqrt{s}=13~\mathrm{TeV}$ data

A search for dark matter is conducted in events with large missing transverse energy and a hadronically decaying, boosted top quark. This study is performed using proton-proton collision data collected by the CMS detector, corresponding to an integrated luminosity of $12.9~\mathrm{fb}^{-1}$. No significant deviations from standard model predictions are observed, and limits are placed on the production of new heavy bosons coupling to dark matter particles.