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Search for Quantum Black Hole Production in High-Invariant-Mass Lepton plus Jet Final States Using pp Collisions at root s=8 TeV and the ATLAS Detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0001-5650-4556
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-1921-6173
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0003-3867-0336
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2014 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 112, no 9, p. 091804-Article in journal (Refereed) Published
Abstract [en]

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 root 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.

Place, publisher, year, edition, pages
2014. Vol. 112, no 9, p. 091804-
Keywords [en]
Proton-Proton Collisions, Carlo Event Generator, Dimensions, Millimeter, LHC
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-144625DOI: 10.1103/PhysRevLett.112.091804ISI: 000332687600001PubMedID: 24655244Scopus ID: 2-s2.0-84896928081OAI: oai:DiVA.org:kth-144625DiVA, id: diva2:714577
Funder
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Note

QC 20140428. Author count: 2909.

Available from: 2014-04-28 Created: 2014-04-28 Last updated: 2024-03-15Bibliographically approved

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Jovicevic, JelenaKuwertz, EmmaLund-Jensen, BengtMorley, AnthonyStrandberg, Jonas

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