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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

Author(s)
Taylor, Frank E.
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Abstract
This Letter presents a search for quantum black-hole production using 20.3  fb[superscript −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.
Date issued
2014-03
URI
http://hdl.handle.net/1721.1/87741
Department
Massachusetts Institute of Technology. Department of Physics
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Aad, G., T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, O. Abdinov, R. Aben, et al. “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.” Physical Review Letters 112, no. 9 (March 2014). © 2014 CERN, for the ATLAS Collaboration
Version: Final published version
ISSN
0031-9007
1079-7114

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