Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/103919
Title: | Search for dark matter produced in association with a single top quark in √ s = 13 TeV pp collisions with the ATLAS detector | Authors: | Fiolhais, M. C. N. Gonçalo, R. Veloso, F. Wolters, H. ATLAS Collaboration |
Issue Date: | Oct-2021 | Publisher: | Springer Nature | Serial title, monograph or event: | European Physical Journal C | Volume: | 81 | Issue: | 10 | 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 transversemomentum 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. | URI: | https://hdl.handle.net/10316/103919 | DOI: | 10.1140/epjc/s10052-021-09566-y | Rights: | openAccess |
Appears in Collections: | FCTUC Física - Artigos em Revistas Internacionais |
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Search-for-dark-matter-produced-in-association-with-a-single-top-quark-in-s13-TeV-pp-collisions-with-the-ATLAS-detectorEuropean-Physical-Journal-C.pdf | 7.28 MB | Adobe PDF | View/Open |
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