Observation of the associated production of a top quark and a Z boson in "padding-size-4-x display--inline-block" style="background: var(--highlight-yellow); color: inherit;">pp collisions at √s = 13 TeV with the ATLAS detector
dc.contributor.author | Aad, G. | |
dc.contributor.author | Abbott, B. | |
dc.contributor.author | Abbott, D.C. | |
dc.contributor.author | Abed Abud, A. | |
dc.contributor.author | Abeling, K. | |
dc.contributor.author | Abhayasinghe, D.K. | |
dc.contributor.author | Abidi, S.H. | |
dc.contributor.author | AbouZeid, O.S. | |
dc.contributor.author | Abraham, N.L. | |
dc.contributor.author | Abramowicz, H. | |
dc.contributor.author | Abreu, H. | |
dc.contributor.author | Abulaiti, Y. | |
dc.date.accessioned | 2021-07-14T19:04:57Z | |
dc.date.available | 2021-07-14T19:04:57Z | |
dc.date.issued | 2020-07 | |
dc.description | Indexación: Scopus | es |
dc.description.abstract | Single top-quark production in association with a Z boson, where the Z boson decays to a pair of charged leptons, is measured in the trilepton channel. The proton-proton collision data collected by the ATLAS experiment from 2015 to 2018 at a centre-of-mass energy of 13 TeV are used, corresponding to an integrated luminosity of 139 fb−1. Events containing three isolated charged leptons (electrons or muons) and two or three jets, one of which is identified as containing a b-hadron, are selected. The main backgrounds are from tt¯ Z and diboson production. Neural networks are used to improve the background rejection and extract the signal. The measured cross-section for tℓ+ℓ−q production, including non-resonant dilepton pairs with mℓ+ℓ−> 30 GeV, is 97 ± 13 (stat.) ± 7 (syst.) fb, consistent with the Standard Model prediction. [Figure not available: see fulltext.] © 2020, The Author(s). | es |
dc.description.uri | https://link-springer-com.recursosbiblioteca.unab.cl/content/pdf/10.1007/JHEP07(2020)124.pdf | |
dc.identifier.citation | Journal of High Energy Physics Volume 2020, Issue 71 July 2020 Article number 124 | es |
dc.identifier.doi | 10.1007/JHEP07(2020)124 | |
dc.identifier.issn | 1126-6708 | |
dc.identifier.uri | http://repositorio.unab.cl/xmlui/handle/ria/19384 | |
dc.language.iso | en | es |
dc.publisher | Springer | es |
dc.subject | Hadron-Hadron scattering (experiments) | es |
dc.title | Observation of the associated production of a top quark and a Z boson in "padding-size-4-x display--inline-block" style="background: var(--highlight-yellow); color: inherit;">pp collisions at √s = 13 TeV with the ATLAS detector | es |
dc.type | Artículo | es |
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