摘要
A search for quantum black holes in electron+jet or muon+jet final states with high invariant mass is performed. The analysis uses data from$\sqrt{s}=13.6~\textrm{TeV}$ $pp$collisions recorded by the ATLAS detector between 2022 and 2024 during Run~3 of the Large Hadron Collider, corresponding to an integrated luminosity of$164~\mathrm{fb}^{-1}$ . This search is strongly motivated by a dramatic increase of the production cross-section by up to an order of magnitude for the highest masses considered, thanks to the small increase of$0.6~\textrm{TeV}$in centre-of-mass energy between Run~2 and Run~3. No significant excess above the Standard Model background is observed, and 95% CL upper limits are set on the production cross-section times branching ratio in several benchmark models, reaching a mass scale of$9.4~\textrm{TeV}$ . These represent the strongest exclusion limits to date on quantum black hole production.