Search for Dark Matter and Large Extra Dimensions in the $\gamma$ + $\not\!E_{\mathrm{T}}$ final state in pp Collisions at $\sqrt{s}=13~\mathrm{TeV}$

We present searches for dark matter pair-production and for graviton production predicted by the ADD large extra dimension model in a final state with a photon and missing transverse energy in pp collisions at $\sqrt{s}=13~\mathrm{TeV}$. Data taken by the CMS experiment in 2015 corresponding to an integrated luminosity of $2.3\,\mathrm{fb^{-1}}$ is analyzed. We find no deviation from the Standard Model prediction for this final state, and achieve an extension of the current limits on parameter space.