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dc.date.accessioned | 2019-08-14T17:06:17Z | |
dc.date.available | 2019-08-14T17:06:17Z | |
dc.date.issued | 2015-11-24 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/79116 | |
dc.description.abstract | The production cross sections of top-quark pairs in association with massive vector bosons have been measured using data from pp collisions at √s = 8TeV. The dataset corresponds to an integrated luminosity of 20.3 fb-1 collected by the ATLAS detector in 2012 at the LHC. Final states with two, three or four leptons are considered. A fit to the data considering the t¯tW and t¯tZ processes simultaneously yields a significance of 5.0σ (4.2σ) over the background-only hypothesis for t¯tW (t¯tZ) production. The measured cross sections are t¯tW = 369+100 -91 fb and t¯tZ = 176+58 -52 fb. The background-only hypothesis with neither t¯tW nor t¯tZ production is excluded at 7.1σ. All measurements are consistent with next-to-leading-order calculations for the t¯tW and t¯tZ processes. | en |
dc.language | en | es |
dc.subject | electroweak interaction | es |
dc.subject | hadron-hadron scattering | es |
dc.subject | top physics | es |
dc.title | Measurement of the t¯tW and t¯tZ production cross sections in pp collisions at √s = 8 TeV with the ATLAS detector | en |
dc.type | Articulo | es |
sedici.identifier.other | https://doi.org/10.1007/JHEP11(2015)172 | |
sedici.identifier.issn | 1029-8479 | es |
sedici.creator.person | Alconada Verzini, María Josefina | es |
sedici.creator.person | Alonso, Francisco | es |
sedici.creator.person | Arduh, Francisco Anuar | es |
sedici.creator.person | Dova, María Teresa | es |
sedici.creator.person | Monticelli, Fernando Gabriel | es |
sedici.creator.person | Wahlberg, Hernán Pablo | es |
sedici.creator.person | The ATLAS Collaboration | es |
sedici.subject.materias | Ciencias Exactas | 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 4.0 International (CC BY 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Journal of High Energy Physics | es |
sedici.relation.journalVolumeAndIssue | vol. 2015, no. 11 | es |