Search for dark matter produced in association with a single top quark in √s=13 TeV pp collisions with the ATLAS detector
(2021) In European Physical Journal C 81(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 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... (More)
- 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. © 2021, The Author(s). (Less)
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- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 81
- issue
- 10
- article number
- 860
- publisher
- Springer
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- scopus:85116501953
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-021-09566-y
- language
- English
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- yes
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- 7be855a0-f1ef-4652-911e-0c883f723c4e
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- https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116501953&doi=10.1140%2fepjc%2fs10052-021-09566-y&partnerID=40&md5=bcde294a888f48151aa14e2cae0f0e4a
- date added to LUP
- 2021-11-01 14:00:41
- date last changed
- 2023-04-02 18:50:57
@article{7be855a0-f1ef-4652-911e-0c883f723c4e, 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. © 2021, The Author(s).}}, author = {{Aad, G and Åkesson, Torsten and Bocchetta, Simona and Corrigan, Eric Edward and Doglioni, Caterina and Geisen, Jannik and Gregersen, Kristian and Brottmann Hansen, Eva and Hedberg, Vincent and Jarlskog, Göran and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Marcon, Caterina and Mjörnmark, Ulf and Mullier, Geoffrey André Adrien and Pöttgen, Ruth and Poulsen, Trine and Skorda, Eleni and Smirnova, Oxana and Zwalinski, L}}, issn = {{1434-6044}}, language = {{eng}}, number = {{10}}, publisher = {{Springer}}, series = {{European Physical Journal C}}, title = {{Search for dark matter produced in association with a single top quark in √s=13 TeV pp collisions with the ATLAS detector}}, url = {{http://dx.doi.org/10.1140/epjc/s10052-021-09566-y}}, doi = {{10.1140/epjc/s10052-021-09566-y}}, volume = {{81}}, year = {{2021}}, }