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dc.date.accessioned 2022-03-23T16:20:44Z
dc.date.available 2022-03-23T16:20:44Z
dc.date.issued 2013-03-04
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/133202
dc.description.abstract 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. en
dc.language en es
dc.subject pp collisions es
dc.subject ATLAS detector es
dc.subject Large Hadron Collider es
dc.title Measurement of upsilon production in 7 TeV pp collisions at ATLAS en
dc.type Articulo es
sedici.identifier.other doi:10.1103/physrevd.87.052004 es
sedici.identifier.issn 1550-7998 es
sedici.identifier.issn 1550-2368 es
sedici.creator.person Anduaga, X. S. es
sedici.creator.person Monticelli, Fernando Gabriel es
sedici.creator.person Dova, María Teresa es
sedici.creator.person Tripiana, Martín Fernando es
sedici.subject.materias Física es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Exactas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Physical Review D es
sedici.relation.journalVolumeAndIssue vol. 87, no. 5 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)