Measurement of t-channel single-top-quark production in pp collisions at √s=5.02 TeV with the ATLAS detector



Aad, G, Abbott, B, Abeling, K, Abicht, NJ, Abidi, SH, Aboulhorma, A, Abramowicz, H, Abreu, H, Abulaiti, Y, Acharya, BS
et al (show 2918 more authors) (2024) Measurement of t-channel single-top-quark production in pp collisions at √s=5.02 TeV with the ATLAS detector PHYSICS LETTERS B, 854. p. 138726. ISSN 0370-2693, 1873-2445

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Abstract

The observation of the electroweak production of single-top-quarks is made using 255 pb−1 of proton-proton collision data recorded at s=5.02 TeV with the ATLAS detector at the Large Hadron Collider. An event selection is used to identify single-top-quark candidates arising from t-channel production with the top quark decaying semi-leptonically. Events passing the selection are then used to measure the inclusive cross-section for the combined production of single-top-quarks and antiquarks, σ(tq+t¯q), and the ratio R<inf>t</inf> between these two. They are measured to be σ(tq+t¯q)=27.1<inf>−4.1</inf> +4.4(stat.)<inf>−3.7</inf> +4.4(syst.) pb and R<inf>t</inf>=2.73<inf>−0.82</inf> +1.43(stat.)<inf>−0.29</inf> +1.01(syst.). The individual single-top-quark (tq) and single-top-antiquark (t¯q) production cross-sections are measured to be σ(tq)=19.8<inf>−3.1</inf> +3.9(stat.)<inf>−2.2</inf> +2.9(syst.) pb and σ(t¯q)=7.3<inf>−2.1</inf> +3.2(stat.)<inf>−1.5</inf> +2.8(syst.) pb. All measurements are in good agreement with the Standard Model predictions.

Item Type: Article
Additional Information: ## TULIP Type: Articles/Papers (Journal) ##
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Health & Life Sciences
Faculty of Science & Engineering > School of Physical Sciences
Faculty of Health & Life Sciences > Inst. Systems, Molec & Integrative Biology > Inst. Systems, Molec & Integrative Biology
Depositing User: Symplectic Admin
Date Deposited: 03 Jun 2024 10:39
Last Modified: 22 May 2026 23:19
DOI: 10.1016/j.physletb.2024.138726
Open Access URL: https://www.sciencedirect.com/science/article/pii/...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3181943
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