Measurement of upsilon production in 7 TeV pp collisions at ATLAS

Autores
Anduaga, X. S.; Monticelli, Fernando Gabriel; Dova, María Teresa; Tripiana, Martín Fernando
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Using 1.8 fb−1 of -pp collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the Large Hadron Collider, we present measurements of the production cross sections of Υ(1S,2S,3S) mesons.Υmesons are reconstructed using the di-muon decay mode. Total production cross sections for pT <70 GeV and in the rapidity interval |yΥ| <2.25 are measured to be 8.01±0.02±0.36±0.31 nb, 2.05±0.01±0.12±0.08 nb, 0.92±0.01±0.07±0.04 nb, respectively, with uncertainties separated into statistical, systematic, and luminosity measurement effects. In addition, differential cross section times di-muon branching fractions forΥ(1S),Υ(2S), and Υ(3S)as a function of Υ transverse momentum pT and rapidity are presented. These cross-sections are obtained assuming unpolarized production. If the production polarization is fully transverse or longitudinal with no azimuthal dependence in the helicity frame the cross-section may vary by approximately ±20%.If a non-trivial azimuthal dependence is considered, integrated cross-sections may be significantly enhanced by a factor of two or more. We compare our results to several theoretical models of Υ meson production, finding that none provide an accurate description of our data over the full range of Υ transverse momenta accessible with this dataset.
Facultad de Ciencias Exactas
Materia
Física
pp collisions
ATLAS detector
Large Hadron Collider
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/133202

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/133202
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network_name_str SEDICI (UNLP)
spelling Measurement of upsilon production in 7 TeV pp collisions at ATLASAnduaga, X. S.Monticelli, Fernando GabrielDova, María TeresaTripiana, Martín FernandoFísicapp collisionsATLAS detectorLarge Hadron ColliderUsing 1.8 fb<sup>−1</sup> of <i>-pp</i> collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the Large Hadron Collider, we present measurements of the production cross sections of <i>Υ</i>(1S,2S,3S) mesons.Υmesons are reconstructed using the di-muon decay mode. Total production cross sections for <i><sub>pT</sub></i> <70 GeV and in the rapidity interval |<i>y<sup>Υ</sup></i>| <2.25 are measured to be 8.01±0.02±0.36±0.31 nb, 2.05±0.01±0.12±0.08 nb, 0.92±0.01±0.07±0.04 nb, respectively, with uncertainties separated into statistical, systematic, and luminosity measurement effects. In addition, differential cross section times di-muon branching fractions for<i>Υ</i>(1S),<i>Υ</i>(2S), and <i>Υ</i>(3S)as a function of <i>Υ</i> transverse momentum <i><sub>pT</sub></i> and rapidity are presented. These cross-sections are obtained assuming unpolarized production. If the production polarization is fully transverse or longitudinal with no azimuthal dependence in the helicity frame the cross-section may vary by approximately ±20%.If a non-trivial azimuthal dependence is considered, integrated cross-sections may be significantly enhanced by a factor of two or more. We compare our results to several theoretical models of <i>Υ</i> meson production, finding that none provide an accurate description of our data over the full range of <i>Υ</i> transverse momenta accessible with this dataset.Facultad de Ciencias Exactas2013-03-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/133202enginfo:eu-repo/semantics/altIdentifier/issn/1550-7998info:eu-repo/semantics/altIdentifier/issn/1550-2368info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.87.052004info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:43Zoai:sedici.unlp.edu.ar:10915/133202Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:43.51SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Measurement of upsilon production in 7 TeV pp collisions at ATLAS
title Measurement of upsilon production in 7 TeV pp collisions at ATLAS
spellingShingle Measurement of upsilon production in 7 TeV pp collisions at ATLAS
Anduaga, X. S.
Física
pp collisions
ATLAS detector
Large Hadron Collider
title_short Measurement of upsilon production in 7 TeV pp collisions at ATLAS
title_full Measurement of upsilon production in 7 TeV pp collisions at ATLAS
title_fullStr Measurement of upsilon production in 7 TeV pp collisions at ATLAS
title_full_unstemmed Measurement of upsilon production in 7 TeV pp collisions at ATLAS
title_sort Measurement of upsilon production in 7 TeV pp collisions at ATLAS
dc.creator.none.fl_str_mv Anduaga, X. S.
Monticelli, Fernando Gabriel
Dova, María Teresa
Tripiana, Martín Fernando
author Anduaga, X. S.
author_facet Anduaga, X. S.
Monticelli, Fernando Gabriel
Dova, María Teresa
Tripiana, Martín Fernando
author_role author
author2 Monticelli, Fernando Gabriel
Dova, María Teresa
Tripiana, Martín Fernando
author2_role author
author
author
dc.subject.none.fl_str_mv Física
pp collisions
ATLAS detector
Large Hadron Collider
topic Física
pp collisions
ATLAS detector
Large Hadron Collider
dc.description.none.fl_txt_mv Using 1.8 fb<sup>−1</sup> of <i>-pp</i> collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the Large Hadron Collider, we present measurements of the production cross sections of <i>Υ</i>(1S,2S,3S) mesons.Υmesons are reconstructed using the di-muon decay mode. Total production cross sections for <i><sub>pT</sub></i> <70 GeV and in the rapidity interval |<i>y<sup>Υ</sup></i>| <2.25 are measured to be 8.01±0.02±0.36±0.31 nb, 2.05±0.01±0.12±0.08 nb, 0.92±0.01±0.07±0.04 nb, respectively, with uncertainties separated into statistical, systematic, and luminosity measurement effects. In addition, differential cross section times di-muon branching fractions for<i>Υ</i>(1S),<i>Υ</i>(2S), and <i>Υ</i>(3S)as a function of <i>Υ</i> transverse momentum <i><sub>pT</sub></i> and rapidity are presented. These cross-sections are obtained assuming unpolarized production. If the production polarization is fully transverse or longitudinal with no azimuthal dependence in the helicity frame the cross-section may vary by approximately ±20%.If a non-trivial azimuthal dependence is considered, integrated cross-sections may be significantly enhanced by a factor of two or more. We compare our results to several theoretical models of <i>Υ</i> meson production, finding that none provide an accurate description of our data over the full range of <i>Υ</i> transverse momenta accessible with this dataset.
Facultad de Ciencias Exactas
description Using 1.8 fb<sup>−1</sup> of <i>-pp</i> collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the Large Hadron Collider, we present measurements of the production cross sections of <i>Υ</i>(1S,2S,3S) mesons.Υmesons are reconstructed using the di-muon decay mode. Total production cross sections for <i><sub>pT</sub></i> <70 GeV and in the rapidity interval |<i>y<sup>Υ</sup></i>| <2.25 are measured to be 8.01±0.02±0.36±0.31 nb, 2.05±0.01±0.12±0.08 nb, 0.92±0.01±0.07±0.04 nb, respectively, with uncertainties separated into statistical, systematic, and luminosity measurement effects. In addition, differential cross section times di-muon branching fractions for<i>Υ</i>(1S),<i>Υ</i>(2S), and <i>Υ</i>(3S)as a function of <i>Υ</i> transverse momentum <i><sub>pT</sub></i> and rapidity are presented. These cross-sections are obtained assuming unpolarized production. If the production polarization is fully transverse or longitudinal with no azimuthal dependence in the helicity frame the cross-section may vary by approximately ±20%.If a non-trivial azimuthal dependence is considered, integrated cross-sections may be significantly enhanced by a factor of two or more. We compare our results to several theoretical models of <i>Υ</i> meson production, finding that none provide an accurate description of our data over the full range of <i>Υ</i> transverse momenta accessible with this dataset.
publishDate 2013
dc.date.none.fl_str_mv 2013-03-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/133202
url http://sedici.unlp.edu.ar/handle/10915/133202
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/1550-7998
info:eu-repo/semantics/altIdentifier/issn/1550-2368
info:eu-repo/semantics/altIdentifier/doi/10.1103/physrevd.87.052004
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
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reponame_str SEDICI (UNLP)
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instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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