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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.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
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2014 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 112, no 9, 091804- p.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, 091804- p.
Keyword [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: 000332687600001Scopus ID: 2-s2.0-84896928081OAI: oai:DiVA.org:kth-144625DiVA: 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: 2017-12-05Bibliographically approved

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Strandberg, Jonas

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