| dc.creator | Anduaga, X. S. | |
| dc.creator | Monticelli, Fernando Gabriel | |
| dc.creator | Dova, María Teresa | |
| dc.creator | Tripiana, Martín Fernando | |
| dc.date | 2013-03-04 | |
| dc.date | 2022-03-23T16:20:44Z | |
| dc.date.accessioned | 2023-07-15T04:38:25Z | |
| dc.date.available | 2023-07-15T04:38:25Z | |
| dc.identifier | http://sedici.unlp.edu.ar/handle/10915/133202 | |
| dc.identifier | issn:1550-7998 | |
| dc.identifier | issn:1550-2368 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/7470324 | |
| dc.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. | |
| dc.description | Facultad de Ciencias Exactas | |
| dc.format | application/pdf | |
| dc.language | en | |
| dc.rights | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
| dc.rights | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
| dc.subject | Física | |
| dc.subject | pp collisions | |
| dc.subject | ATLAS detector | |
| dc.subject | Large Hadron Collider | |
| dc.title | Measurement of upsilon production in 7 TeV pp collisions at ATLAS | |
| dc.type | Articulo | |
| dc.type | Articulo | |
