Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment

41 pages in total, author list starting page 23, 3 figures, 3 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2018-28/

Detalhes bibliográficos
Autores: ATLAS Collaboration, et al., Lopez Paz, Ivan
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2022
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/349911
Acesso em linha:http://hdl.handle.net/10261/349911
http://arxiv.org/abs/2209.14903v2
Access Level:Acceso aberto
Palavra-chave:High Energy Physics - Experiment
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spelling Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experimentATLAS Collaborationet al.Lopez Paz, IvanHigh Energy Physics - Experiment41 pages in total, author list starting page 23, 3 figures, 3 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2018-28/The data for this manuscript are not available. The values in the plots and tables associated to this article are stored in HEPDATA (https://hepdata.cedar.ac.ukA measurement of the polarisation of W bosons produced in top-quark decays is presented, using proton–proton collision data at a centre-of-mass energy of √s = 13 TeV. The data were collected by the ATLAS detector at the Large Hadron Collider and correspond to an integrated luminosity of 139 fb−1. The measurement is performed selecting tt¯ events decaying into final states with two charged leptons (electrons or muons) and at least two b-tagged jets. The polarisation is extracted from the differential cross-section distribution of the cos θ ∗ variable, where θ ∗ is the angle between the momentum direction of the charged lepton from the W boson decay and the reversed momentum direction of the b-quark from the top-quark decay, both calculated in the W boson rest frame. Parton-level results, corrected for the detector acceptance and resolution, are presented for the cos θ ∗ angle. The measured fractions of longitudinal, left- and right-handed polarisation states are found to be f0 = 0.684 ± 0.005 (stat.) ± 0.014 (syst.), fL = 0.318 ± 0.003 (stat.) ± 0.008 (syst.) and fR = −0.002 ± 0.002 (stat.) ± 0.014 (syst.), in agreement with the Standard Model prediction.Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/349911http://arxiv.org/abs/2209.14903v2reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésThe underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.physletb.2023.137829https://doi.org/10.1016/j.physletb.2023.137829Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3499112026-05-22T06:33:51Z
dc.title.none.fl_str_mv Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
title Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
spellingShingle Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
ATLAS Collaboration
High Energy Physics - Experiment
title_short Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
title_full Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
title_fullStr Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
title_full_unstemmed Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
title_sort Measurement of the polarisation of W bosons produced in top-quark decays using dilepton events at √s = 13 TeV with the ATLAS experiment
dc.creator.none.fl_str_mv ATLAS Collaboration
et al.
Lopez Paz, Ivan
author ATLAS Collaboration
author_facet ATLAS Collaboration
et al.
Lopez Paz, Ivan
author_role author
author2 et al.
Lopez Paz, Ivan
author2_role author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv High Energy Physics - Experiment
topic High Energy Physics - Experiment
description 41 pages in total, author list starting page 23, 3 figures, 3 tables, published in PLB. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2018-28/
publishDate 2022
dc.date.none.fl_str_mv 2022
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/349911
http://arxiv.org/abs/2209.14903v2
url http://hdl.handle.net/10261/349911
http://arxiv.org/abs/2209.14903v2
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1016/j.physletb.2023.137829
https://doi.org/10.1016/j.physletb.2023.137829
Sí
dc.rights.none.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:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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