Search for Quantum Black Hole Production in High-Invariant-Mass Lepton+Jet Final States Using pp Collisions at √s =8 TeV and the ATLAS Detector
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2014
- DOI:
- arXiv:
- arXiv:1311.2006
- Bibcode:
- 2014PhRvL.112i1804A
- Keywords:
-
- 13.85.Qk;
- 04.50.Cd;
- 04.50.Gh;
- Inclusive production with identified leptons photons or other nonhadronic particles;
- Kaluza-Klein theories;
- Higher-dimensional black holes black strings and related objects;
- High Energy Physics - Experiment
- E-Print:
- 6 pages plus author list (20 pages total), 2 figures, 2 tables, submitted to Physical Review Letters, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-03/ Revision corresponds to published version