Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector

37 pages in total, author list starting page 20, 3 figures, 1 table, published in JHEP 11 (2024) 101. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2023-32/

Detalles Bibliográficos
Autores: ATLAS Collaboration, Lopez Paz, Ivan
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/395849
Acceso en línea:http://hdl.handle.net/10261/395849
http://arxiv.org/abs/2405.05078v2
Access Level:acceso abierto
Palabra clave:Heavy Ion Experiments
Top Physics
Nuclear Experiment
High Energy Physics - Experiment
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
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spelling Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detectorATLAS CollaborationLopez Paz, IvanHeavy Ion ExperimentsTop PhysicsNuclear ExperimentHigh Energy Physics - Experimenthttp://metadata.un.org/sdg/9Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation37 pages in total, author list starting page 20, 3 figures, 1 table, published in JHEP 11 (2024) 101. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2023-32/This paper reports the observation of top-quark pair production in proton-lead collisions in the ATLAS experiment at the Large Hadron Collider. The measurement is performed using 165 nb−1 of p+Pb data collected at √ sNN = 8.16 TeV in 2016. Events are categorised in two analysis channels, consisting of either events with exactly one lepton (electron or muon) and at least four jets, or events with two opposite-charge leptons and at least two jets. In both channels at least one b-tagged jet is also required. Top-quark pair production is observed with a signifcance over fve standard deviations in each channel. The top-quark pair production cross-section is measured to be σtt¯= 58.1±2.0 (stat.) +4.8 −4.4 (syst.) nb, with a total uncertainty of 9%. In addition, the nuclear modifcation factor is measured to be RpA = 1.090 ± 0.039 (stat.) +0.094 −0.087 (syst.). The measurements are found to be in good agreement with theory predictions involving nuclear parton distribution functions.Peer reviewedSpringer NatureConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/395849http://arxiv.org/abs/2405.05078v2reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésNuclear Experiment; High Energy Physics - ExperimentSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3958492026-05-22T06:33:51Z
dc.title.none.fl_str_mv Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
title Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
spellingShingle Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
ATLAS Collaboration
Heavy Ion Experiments
Top Physics
Nuclear Experiment
High Energy Physics - Experiment
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
title_short Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
title_full Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
title_fullStr Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
title_full_unstemmed Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
title_sort Observation of tt¯ production in the lepton+jets and dilepton channels in p+Pb collisions at √sNN = 8.16 TeV with the ATLAS detector
dc.creator.none.fl_str_mv ATLAS Collaboration
Lopez Paz, Ivan
author ATLAS Collaboration
author_facet ATLAS Collaboration
Lopez Paz, Ivan
author_role author
author2 Lopez Paz, Ivan
author2_role author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Heavy Ion Experiments
Top Physics
Nuclear Experiment
High Energy Physics - Experiment
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
topic Heavy Ion Experiments
Top Physics
Nuclear Experiment
High Energy Physics - Experiment
http://metadata.un.org/sdg/9
Build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation
description 37 pages in total, author list starting page 20, 3 figures, 1 table, published in JHEP 11 (2024) 101. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2023-32/
publishDate 2024
dc.date.none.fl_str_mv 2024
2025
2025
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/10261/395849
http://arxiv.org/abs/2405.05078v2
url http://hdl.handle.net/10261/395849
http://arxiv.org/abs/2405.05078v2
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Nuclear Experiment; High Energy Physics - Experiment
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 Springer Nature
publisher.none.fl_str_mv Springer Nature
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 15,81155

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