Search for new physics in high mass diphoton events in $3.3~\mathrm{fb}^{-1}$ of proton-proton collisions at $\sqrt{s}=13~\mathrm{TeV}$ and combined interpretation of searches at $8~\mathrm{TeV}$ and $13~\mathrm{TeV}$

We report on a search for new physics using high mass diphoton events. The search employs $3.3~\mathrm{fb}^{-1}$ of pp collision data collected by the CMS experiment in 2015 at a center-of-mass energy of $13~\mathrm{TeV}$. It is aimed at spin-0 and spin-2 resonances of mass between 500 and 4500 GeV and relative width up to $5.6\times10^{-2}$. The results of the search are combined with those obtained by the CMS collaboration in similar searches at $\sqrt{s}=8~\mathrm{TeV}$.