Search for quantum black hole production in lepton+jet final states using proton-proton collisions at s=13 TeV with the ATLAS detector

Long, Robin and Sanderswood, Izaac and Tee, Amy S. and Whitmore, Ben and Yexley, Melissa (2024) Search for quantum black hole production in lepton+jet final states using proton-proton collisions at s=13 TeV with the ATLAS detector. Physical Review D, 109 (3): 032010. ISSN 2470-0010

Abstract

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.