Search for Quantum Black Hole Production in High-Invariant-Mass Lepton$+$Jet Final States Using $pp$ Collisions at $\sqrt{s} =$ 8  TeV and the ATLAS Detector

Philip James Clark, Victoria Jane Martin, Corrinne Mills, Atlas Collaboration

Research output: Contribution to journalArticlepeer-review

Abstract

This Letter presents a search for quantum black-hole production using 20.3  fb−1 of data collected with the ATLAS detector in pp collisions at the LHC at s=8  TeV. The quantum black holes are assumed to decay into a final state characterized by a lepton (electron or muon) and a jet. In either channel, no event with a lepton-jet invariant mass of 3.5 TeV or more is observed, consistent with the expected background. Limits are set on the product of cross sections and branching fractions for the lepton+jet final states of quantum black holes produced in a search region for invariant masses above 1 TeV. The combined 95% confidence level upper limit on this product for quantum black holes with threshold mass above 3.5 TeV is 0.18 fb. This limit constrains the threshold quantum black-hole mass to be above 5.3 TeV in the model considered.

Original languageEnglish
Article numberAad:2013gma
Pages (from-to)091804
JournalPhysical Review Letters
Volume112
Issue number9
DOIs
Publication statusPublished - 5 Mar 2014

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