Search for S-Channel Single Top-Quark Production in Proton-Proton Collisions at √s = 8 TeV with the ATLAS Detector

dc.contributor.ORCID0000-0003-0867-2189 (Lou, X)
dc.contributor.VIAF250674117 (Izen, JM)en_US
dc.contributor.VIAF250674117 (Izen, JM)
dc.contributor.authorAad, G.en_US
dc.contributor.authorAbbott, B.en_US
dc.contributor.authorAbdallah, J.en_US
dc.contributor.authorKhalek, S. Abdelen_US
dc.contributor.authorAbdinov, O.en_US
dc.contributor.authorAben, R.en_US
dc.contributor.authorAbi, B.en_US
dc.contributor.authorIzen, Joseph M.en_US
dc.contributor.authorLeyton, Michaelen_US
dc.contributor.authorLou, Xinchouen_US
dc.contributor.authorNamasivayam, Harisankaren_US
dc.contributor.authorReeves, Kendallen_US
dc.contributor.authorATLAS Collaborationen_US
dc.contributor.utdAuthorIzen, Joseph M.en_US
dc.contributor.utdAuthorLeyton, Michaelen_US
dc.contributor.utdAuthorNamasivayam, Harisankaren_US
dc.contributor.utdAuthorReeves, Kendallen_US
dc.contributor.utdAuthorLou, Xinchouen_US
dc.date.accessioned2015-03-25T19:03:32Z
dc.date.available2015-03-25T19:03:32Z
dc.date.created2014-11-22en_US
dc.date.issued2014-11-22en_US
dc.description.abstractThis Letter presents a search at the LHC for s-channel single top-quark production in proton-proton collisions at a centre-of-mass energy of 8 TeV. The analyzed data set was recorded by the ATLAS detector and corresponds to an integrated luminosity of 20.3 fb⁻¹. Selected events contain one charged lepton, large missing transverse momentum and exactly two b-tagged jets. A multivariate event classifier based on boosted decision trees is developed to discriminate s-channel single top-quark events from the main background contributions. The signal extraction is based on a binned maximum-likelihood fit of the output classifier distribution. The analysis leads to an upper limit on the s-channel single top-quark production cross-section of 14.6 pb at the 95% confidence level. The fit gives a cross-section of σ(s) = 5.0 ± 4.3 pb, consistent with the Standard Model expectation.en_US
dc.identifier.bibliographicCitationAad, G., B. Abbott, J. Abdallah, S. Abdel Khalek, et al. 2015. "Search for s-channel single top-quark production in proton-proton collisions at √s̅ = 8 TeV with the ATLAS detector." Physics Letters B 740, doi:10.1016/j.physletb.2014.11.042en_US
dc.identifier.issn0370-2693en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4364
dc.identifier.volume740en_US
dc.language.isoen_USen_US
dc.publisherElsevieren_US
dc.relation.urihttp://dx.doi.org/10.1016/j.physletb.2014.11.042
dc.rightsCC BY 3.0 (Attribution)en_US
dc.rights©2014 The Authorsen_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en_US
dc.sourcePhysics Letters B
dc.subjectQuarksen_US
dc.subjectElectroweak interactionsen_US
dc.subjectS-Channelen_US
dc.subjectTransverse momentum (Physics)en_US
dc.subjectW bosonsen_US
dc.subjectJets (Nuclear physics)en_US
dc.subjectLeptons (Nuclear physics)en_US
dc.titleSearch for S-Channel Single Top-Quark Production in Proton-Proton Collisions at √s = 8 TeV with the ATLAS Detectoren_US
dc.typeTexten_US
dc.type.genreArticleen_US

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