Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector

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...

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Detalles Bibliográficos
Autores principales: Alonso, Francisco, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Orellana, Gonzalo Enrique, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Física
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/141180
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-141180
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
spellingShingle Física
Alonso, Francisco
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector
topic_facet Física
description 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.
format Articulo
Articulo
author Alonso, Francisco
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alonso, Francisco
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Orellana, Gonzalo Enrique
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alonso, Francisco
title Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector
title_short Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector
title_full Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector
title_fullStr Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector
title_full_unstemmed Search for dark matter produced in association with a single top quark in √s = 13 TeV pp collisions with the ATLAS detector
title_sort search for dark matter produced in association with a single top quark in √s = 13 tev pp collisions with the atlas detector
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/141180
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