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Search for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector

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dc.contributor.authorAaboud, M.
dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbdinov, O.
dc.contributor.authorAbeloos, B.
dc.contributor.authorAbidi, S.
dc.contributor.authorAbouZeid, O.
dc.contributor.authorAbraham, N.
dc.contributor.authorAbramowicz, H.
dc.contributor.authorAbreu, H.
dc.contributor.authorAbreu, R.
dc.contributor.authorAbulaiti, Y.
dc.contributor.authorAcharya, B.
dc.contributor.authorAdachi, S.
dc.contributor.authorAdamczyk, L.
dc.contributor.authorAdelman, J.
dc.contributor.authorAdersberger, M.
dc.contributor.authorAdye, T.
dc.contributor.authorAffolder, A.
dc.contributor.authorAgatonovic-Jovin, T.
dc.contributor.authoret al.
dc.date.issued2017
dc.description.abstractThe results of a search for vector-like top quarks using events with exactly one lepton, at least four jets, and large missing transverse momentum are reported. The search is optimised for pair production of vector-like top quarks in the Z(→νν) t + X decay channel. LHC pp collision data at a centre-of-mass energy of s√=13 TeV recorded by the ATLAS detector in 2015 and 2016 are used, corresponding to an integrated luminosity of 36.1 fb−1. No significant excess over the Standard Model expectation is seen and upper limits on the production cross-section of a vector-like T quark pair as a function of the T quark mass are derived. The observed (expected) 95% CL lower limits on the T mass are 870 GeV (890 GeV) for the weak-isospin singlet model, 1.05 TeV (1.06 TeV) for the weak-isospin doublet model and 1.16 TeV (1.17 TeV) for the pure Zt decay mode. Limits are also set on the mass as a function of the decay branching ratios, excluding large parts of the parameter space for masses below 1 TeV.
dc.description.statementofresponsibilityM. Aaboud, G. Aad ... P. Jackson … L. Lee ... A. Petridis … M. J. White … et al. (ATLAS Collaboration)
dc.identifier.citationJournal of High Energy Physics (JHEP), 2017; 2017(8):052-1-052-39
dc.identifier.doi10.1007/JHEP08(2017)052
dc.identifier.issn1126-6708
dc.identifier.issn1029-8479
dc.identifier.urihttp://hdl.handle.net/2440/115244
dc.language.isoen
dc.publisherSpringer
dc.rights© The Author(s) 2017. This article is published under an open access license. Please check the 'Copyright Information' section for details of this license and what re-use is permitted. If your intended use exceeds what is permitted by the license or if you are unable to locate the licence and re-use information, please contact the Rights and Permissions team.
dc.source.urihttps://doi.org/10.1007/jhep08(2017)052
dc.subjectExotics; Hadron-Hadron scattering (experiments); vector-like quarks
dc.titleSearch for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector
dc.title.alternativeSearch for pair production of vector-like top quarks in events with one lepton, jets, and missing transverse momentum in root s=13 TeV pp collisions with the ATLAS detector
dc.typeJournal article
pubs.publication-statusPublished

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