Tumasyan, A.Adam, W.Andrejkovic, J. W.Bergauer, ThomasChatterjee, S.Damanakis, KonstantinosDragicevic, M.2024-06-132024-06-1320231029-847910.1007/JHEP12(2023)189https://doi.org/10.1007/JHEP12(2023)189https://hdl.handle.net/11501/1090A search for resonances in events with the gamma+jet final state has been performed using proton-proton collision data collected at root s = 13 TeV by the CMS experiment at the LHC. The total data analyzed correspond to an integrated luminosity of 138 fb(-1). Models of excited quarks and quantum black holes are considered. Using a wide-jet reconstruction for the candidate jet, the gamma +jet invariant mass spectrum measured in data is examined for the presence of resonances over the standard model continuum background. The background is estimated by fitting this mass distribution with a functional form. The data exhibit no statistically significant deviations from the expected standard model background. Exclusion limits at 95% confidence level on the resonance mass and other parameters are set. Excited light-flavor quarks (excited bottom quarks) are excluded up to a mass of 6.0 (3.8) TeV. Quantum black hole production is excluded for masses up to 7.5 (5.2) TeV in the ArkaniHamed-Dimopoulos-Dvali (Randall-Sundrum) model. These lower mass bounds are the most stringent to date among those obtained in the gamma +jet final state.eninfo:eu-repo/semantics/openAccessBeyond Standard ModelHadron-Hadron ScatteringHierarchyArticle12WOS:001173325000001Q1