Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/115317
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dc.contributor.authorAad, G.en
dc.contributor.authorAbbott, B.en
dc.contributor.authorAbdallah, J.en
dc.contributor.authorAbdinov, O.en
dc.contributor.authorAben, R.en
dc.contributor.authorAbolins, M.en
dc.contributor.authorAbouZeid, O.en
dc.contributor.authorAbramowicz, H.en
dc.contributor.authorAbreu, H.en
dc.contributor.authorAbreu, R.en
dc.contributor.authorAbulaiti, Y.en
dc.contributor.authorAcharya, B.en
dc.contributor.authorAdamczyk, L.en
dc.contributor.authorAdams, D.en
dc.contributor.authorAdelman, J.en
dc.contributor.authorAdomeit, S.en
dc.contributor.authorAdye, T.en
dc.contributor.authorAffolder, A.en
dc.contributor.authorAgatonovic-Jovin, T.en
dc.contributor.authorAgricola, J.en
dc.contributor.authoret al.en
dc.date.issued2016en
dc.identifier.citationEuropean Physical Journal C, 2016; 76(2):1-30en
dc.identifier.issn1434-6044en
dc.identifier.issn1434-6052en
dc.identifier.urihttp://hdl.handle.net/2440/115317-
dc.description.abstractA search for single top-quark production via flavour-changing neutral current processes from gluon plus up- or charm-quark initial states in proton–proton collisions at the LHC is presented. Data collected with the ATLAS detector in 2012 at a centre-of-mass energy of 8 TeV and corresponding to an integrated luminosity of 20.3 fb⁻¹ are used. Candidate events for a top quark decaying into a lepton, a neutrino and a jet are selected and classified into signal- and background-like candidates using a neural network. No signal is observed and an upper limit on the production cross-section multiplied by the t→Wb branching fraction is set. The observed 95% CL limit is σqg→t×B(t→Wb)<3.4pb and the expected 95 % CL limit is σqg→t×B(t→Wb)<2.9pb. The observed limit can be interpreted as upper limits on the coupling constants of the flavour-changing neutral current interactions divided by the scale of new physics κugt/Λ<5.8×10⁻³ TeV⁻¹ and κcgt/Λ<13×10⁻³ TeV and on the branching fractions B(t→ug)<4.0×10⁻⁵ and B(t→cg)<20×10⁻⁵.en
dc.description.statementofresponsibilityG. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... [et al.] (The ATLAS Collaboration)en
dc.language.isoenen
dc.publisherSpringeren
dc.rights© CERN for the benefit of the ATLAS collaboration 2016. This article is published with open access at Springerlink.comen
dc.subjectATLAS Collaborationen
dc.titleSearch for single top-quark production via flavour-changing neutral currents at 8 TeV with the ATLAS detectoren
dc.typeJournal articleen
dc.identifier.rmid0030043755en
dc.identifier.doi10.1140/epjc/s10052-016-3876-4en
dc.identifier.pubid209441-
pubs.library.collectionPhysics publicationsen
pubs.library.teamDS14en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
Appears in Collections:Physics publications

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