Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/102638
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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.authorAguilar-Saavedra, J.en
dc.contributor.authoret al.en
dc.date.issued2015en
dc.identifier.citationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2015; 749:519-541en
dc.identifier.issn0370-2693en
dc.identifier.issn1873-2445en
dc.identifier.urihttp://hdl.handle.net/2440/102638-
dc.description.abstractA search for the associated production of the Higgs boson with a top quark pair is performed in multilepton final states using 20.3 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √ s = 8 TeVat the Large Hadron Collider. Five final states, targeting the decays H → WW∗, ττ, and Z Z∗, are examined for the presence of the Standard Model (SM) Higgs boson: two same-charge light leptons (e or μ) without a hadronically decaying τ lepton; three light leptons; two same-charge light leptons with a hadronically decaying τ lepton; four light leptons; and one light lepton and two hadronically decaying τ leptons. No significant excess of events is observed above the background expectation. The best fit for the t¯tH production cross section, assuming a Higgs boson mass of 125 GeV, is 2.1+1.4 −1.2 times the SM expectation, and the observed (expected) upper limit at the 95% confidence level is 4.7 (2.4) times the SM rate. The p-value for compatibility with the background-only hypothesis is 1.8σ; the expectation in the presence of a Standard Model signal is 0.9σ.en
dc.description.statementofresponsibilityG. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M.J. White ... et al. (ATLAS Collaboration)en
dc.language.isoenen
dc.publisherElsevieren
dc.rights© 2015 CERN for the benefit of the ATLAS Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3.en
dc.titleSearch for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detectoren
dc.typeJournal articleen
dc.identifier.rmid0030035372en
dc.identifier.doi10.1016/j.physletb.2015.07.079en
dc.identifier.pubid191082-
pubs.library.collectionPhysics publicationsen
pubs.library.teamDS11en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
Appears in Collections:Physics publications

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