Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at √s=13 TeV with ATLS



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2851 more authors) (2018) Measurement of the cross-section for producing a W boson in association with a single top quark in pp collisions at √s=13 TeV with ATLS JOURNAL OF HIGH ENERGY PHYSICS, 2018 (1). 63-. ISSN 1029-8479, 1029-8479

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Abstract

The inclusive cross-section for the associated production of a W boson and top quark is measured using data from proton-proton collisions at s=13 TeV. The dataset corresponds to an integrated luminosity of 3.2 fb−1, and was collected in 2015 by the ATLAS detector at the Large Hadron Collider at CERN. Events are selected requiring two opposite sign isolated leptons and at least one jet; they are separated into signal and control regions based on their jet multiplicity and the number of jets that are identified as containing b hadrons. The W t signal is then separated from the tt¯ background using boosted decision tree discriminants in two regions. The cross-section is extracted by fitting templates to the data distributions, and is measured to be σ<inf>W t</inf> = 94 ± 10(stat.)<inf>− 22</inf> + 28(syst.) ± 2(lumi.) pb. The measured value is in good agreement with the SM prediction of σ<inf>theory</inf> = 71.7±1.8 (scale)± 3.4 (PDF) pb [1].[Figure not available: see fulltext.].

Item Type: Article
Additional Information: 40 pages in total, author list starting page 24, 7 figures, 4 tables, published in JHEP, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-16/
Uncontrolled Keywords: Hadron-Hadron scattering (experiments)
Depositing User: Symplectic Admin
Date Deposited: 12 Feb 2018 10:45
Last Modified: 16 Jun 2026 13:51
DOI: 10.1007/JHEP01(2018)063
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3017811
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