Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment

Detalhes bibliográficos
Autor(a) principal: Castro, Nuno Filipe
Data de Publicação: 2023
Outros Autores: Onofre, A., ATLAS Collaboration
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/87812
Resumo: A measurement of the charge asymmetry in top-quark pair (tt¯) production in association with a photon is presented. The measurement is performed in the single-lepton tt¯ decay channel using proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN at a centre-of-mass-energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The charge asymmetry is obtained from the distribution of the difference of the absolute rapidities of the top quark and antiquark using a profile likelihood unfolding approach. It is measured to be AC=−0.003±0.029 in agreement with the Standard Model expectation.
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spelling Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experimentCiências Naturais::Ciências FísicasA measurement of the charge asymmetry in top-quark pair (tt¯) production in association with a photon is presented. The measurement is performed in the single-lepton tt¯ decay channel using proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN at a centre-of-mass-energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The charge asymmetry is obtained from the distribution of the difference of the absolute rapidities of the top quark and antiquark using a profile likelihood unfolding approach. It is measured to be AC=−0.003±0.029 in agreement with the Standard Model expectation.NSF -National Science Foundation(IN2P3-CNRS)info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoCastro, Nuno FilipeOnofre, A.ATLAS Collaboration20232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/87812engAad, G., Abbott, B., Abbott, D. C., Abeling, K., Abidi, S. H., Aboulhorma, A., . . . Zwalinski, L. (2023). Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment. [Article]. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 843. doi: 10.1016/j.physletb.2023.1378480370-26931873-244510.1016/j.physletb.2023.137848https://www.sciencedirect.com/science/article/pii/S037026932300182Xinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-06T01:28:23Zoai:repositorium.sdum.uminho.pt:1822/87812Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:30:22.500180Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
title Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
spellingShingle Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
Castro, Nuno Filipe
Ciências Naturais::Ciências Físicas
title_short Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
title_full Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
title_fullStr Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
title_full_unstemmed Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
title_sort Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment
author Castro, Nuno Filipe
author_facet Castro, Nuno Filipe
Onofre, A.
ATLAS Collaboration
author_role author
author2 Onofre, A.
ATLAS Collaboration
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Castro, Nuno Filipe
Onofre, A.
ATLAS Collaboration
dc.subject.por.fl_str_mv Ciências Naturais::Ciências Físicas
topic Ciências Naturais::Ciências Físicas
description A measurement of the charge asymmetry in top-quark pair (tt¯) production in association with a photon is presented. The measurement is performed in the single-lepton tt¯ decay channel using proton–proton collision data collected with the ATLAS detector at the Large Hadron Collider at CERN at a centre-of-mass-energy of 13 TeV during the years 2015–2018, corresponding to an integrated luminosity of 139 fb−1. The charge asymmetry is obtained from the distribution of the difference of the absolute rapidities of the top quark and antiquark using a profile likelihood unfolding approach. It is measured to be AC=−0.003±0.029 in agreement with the Standard Model expectation.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://hdl.handle.net/1822/87812
url https://hdl.handle.net/1822/87812
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Aad, G., Abbott, B., Abbott, D. C., Abeling, K., Abidi, S. H., Aboulhorma, A., . . . Zwalinski, L. (2023). Measurement of the charge asymmetry in top-quark pair production in association with a photon with the ATLAS experiment. [Article]. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 843. doi: 10.1016/j.physletb.2023.137848
0370-2693
1873-2445
10.1016/j.physletb.2023.137848
https://www.sciencedirect.com/science/article/pii/S037026932300182X
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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