Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/133136
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Type: Journal article
Title: Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector
Other Titles: Search for dark matter produced in association with a single top quark in root s = 13 TeV pp collisions with the ATLAS detector
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abud, A.A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adam, L.
Bourdarios, C.A.
Adamczyk, L.
Adamek, L.
Adelman, J.
Adiguzel, A.
et al.
Citation: European Physical Journal C: Particles and Fields, 2021; 81(10):860-1-860-37
Publisher: Springer Nature
Issue Date: 2021
ISSN: 1434-6044
1434-6052
Statement of
Responsibility: 
G. Aad … D. Duvnjak … P. Jackson … A.X.Y. Kong … J.L. Oliver … H. Potti … T.A. Ruggeri … A.S. Sharma … M.J. White … et al. [The ATLAS Collaboration]
Abstract: This paper presents a search for dark matter in the context of a two-Higgs-doublet model together with an additional pseudoscalar mediator, a, which decays into the dark-matter particles. Processes where the pseudoscalar mediator is produced in association with a single top quark in the 2HDM+a model are explored for the first time at the LHC. Several final states which include either one or two charged leptons (electrons or muons) and a significant amount of missing transverse momentum are considered. The analysis is based on proton–proton collision data collected with the ATLAS experiment at s√ = 13 TeV during LHC Run 2 (2015–2018), corresponding to an integrated luminosity of 139 fb⁻¹. No significant excess above the Standard Model predictions is found. The results are expressed as 95% confidence-level limits on the parameters of the signal models considered.
Rights: © CERN for the benefit of the ATLAS Collaboration 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
DOI: 10.1140/epjc/s10052-021-09566-y
Grant ID: ARC
Published version: http://dx.doi.org/10.1140/epjc/s10052-021-09566-y
Appears in Collections:Physics publications

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