Search for resonance production in events with a photon and jet with the CMS experiment

A search for resonance production in the $\gamma+$jet final state has been performed using proton-proton collision data collected at $\sqrt{s}=13~\mathrm{TeV}$ by the CMS experiment at the LHC. The total data analyzed correspond to an integrated luminosity of $138~\mathrm{fb}^{-1}$. Models of excited quarks, excited heavy quark flavors, and quantum black holes are considered. The invariant mass spectrum of the $\gamma+$jet system is searched for resonances over the standard model continuum background. In the absence of any observed deviation from expected standard model backgrounds, exclusion limits on mass of resonance and other parameters are set. Excited quarks are excluded up to a mass of $6.0~\mathrm{TeV}$ and excited heavy flavor quarks up to $2.2~\mathrm{TeV}$. Quantum black hole signal production is excluded up to $7.5~\mathrm{TeV}$ and $5.2~\mathrm{TeV}$ for the Arkani-Hamed-Dimopoulos-Dvali and Randall-Sundrum models. $$\textit{This document has been revised with respect to the version dated September 14, 2022.}$$