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Abstract:

The production of a top quark in association with a Z boson is investigated. The proton–proton collision data collected by the ATLAS experiment at the LHC in 2015 and 2016 at a centre-of-mass energy of s=13TeV are used, corresponding to an integrated luminosity of 36.1fb −1 . Events containing three identified leptons (electrons and/or muons) and two jets, one of which is identified as a b-quark jet are selected. The major backgrounds are diboson, tt¯ and Z+jets production. A neural network is used to improve the background rejection and extract the signal. The resulting significance is 4.2σ in the data and the expected significance is 5.4σ. The measured cross-section for tZq production is 600±170(stat.)±140(syst.)fb. © 2018 The Author(s)

Registro:

Documento: Artículo
Título:Measurement of the production cross-section of a single top quark in association with a Z boson in proton–proton collisions at 13 TeV with the ATLAS detector
Autor:Aaboud, M. et al.
Este artículo contiene 2901 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2901 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2018
Volumen:780
Página de inicio:557
Página de fin:577
DOI: http://dx.doi.org/10.1016/j.physletb.2018.03.023
Título revista:Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Título revista abreviado:Phys Lett Sect B Nucl Elem Part High-Energy Phys
ISSN:03702693
CODEN:PYLBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v780_n_p557_Aaboud

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Citas:

---------- APA ----------
(2018) . Measurement of the production cross-section of a single top quark in association with a Z boson in proton–proton collisions at 13 TeV with the ATLAS detector. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 780, 557-577.
http://dx.doi.org/10.1016/j.physletb.2018.03.023
---------- CHICAGO ----------
Aaboud, M. "Measurement of the production cross-section of a single top quark in association with a Z boson in proton–proton collisions at 13 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 780 (2018) : 557-577.
http://dx.doi.org/10.1016/j.physletb.2018.03.023
---------- MLA ----------
Aaboud, M. "Measurement of the production cross-section of a single top quark in association with a Z boson in proton–proton collisions at 13 TeV with the ATLAS detector" . Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 780, 2018, pp. 557-577.
http://dx.doi.org/10.1016/j.physletb.2018.03.023
---------- VANCOUVER ----------
Aaboud, M. Measurement of the production cross-section of a single top quark in association with a Z boson in proton–proton collisions at 13 TeV with the ATLAS detector. Phys Lett Sect B Nucl Elem Part High-Energy Phys. 2018;780:557-577.
http://dx.doi.org/10.1016/j.physletb.2018.03.023