Search for quantum black hole production in lepton + jet final states using proton-proton collisions at √s=13 TeV with the ATLAS detector Aad, Georges Aguilar Saavedra, Juan Antonio Atlas Collaboration, / A search for quantum black holes in electron + jet and muon + jet invariant mass spectra is performed with 140 fb−1 of data collected by the ATLAS detector in proton-proton collisions at √s=13 TeV at the Large Hadron Collider. The observed invariant mass spectrum of lepton + jet pairs is consistent with Standard Model expectations. Upper limits are set at 95% confidence level on the production cross section times branching fractions for quantum black holes decaying into a lepton and a quark in a search region with invariant mass above 2.0 TeV. The resulting quantum black hole lower mass threshold limit is 9.2 TeV in the Arkani-Hamed-Dimopoulos-Dvali model, and 6.8 TeV in the Randall-Sundrum model. 2024-05-17T07:31:29Z 2024-05-17T07:31:29Z 2024-02-27 journal article G. Aad et al. (ATLAS Collaboration). Search for quantum black hole production in lepton + jet final states using proton-proton collisions at √s=13 TeV with the ATLAS detector. Phys. Rev. D 109, 032010 (2023) [10.1103/PhysRevD.109.032010] https://hdl.handle.net/10481/91896 10.1103/PhysRevD.109.032010 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional American Physical Society