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Abstract:

The production of a W boson in association with a single charm quark is studied using 4.6 fb -1 of pp collision data at √s = 7TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated and differential cross sections as a function of the pseudorapidity of the lepton from the W-boson decay are measured. Results are compared to the predictions of next-to-leading-order QCD calculations obtained from various parton distribution function parameterisations. The ratio of the strange-to-down sea-quark distributions is determined to be 0.96 + - 0 0 . 30 at Q 2 = 1.9 GeV, which supports the hypothesis of an SU(3)-symmetric composition of the light-quark sea. Additionally the cross-section ratio σ(W + + c)/σ(W- +c) is compared to the predictions obtained using parton distribution function parameterisations with different assumptions about the s–s quark asymmetry. © CERN 2014.

Registro:

Documento: Artículo
Título:Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7TeV with the ATLAS detector
Autor:The ATLAS collaboration et al.
Este artículo contiene 2902 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2902 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Palabras clave:Charm physics; Electroweak interaction; Hadron-Hadron scattering
Año:2014
Volumen:2014
Número:5
Página de inicio:1
Página de fin:67
DOI: http://dx.doi.org/10.1007/JHEP05(2014)068
Título revista:Journal of High Energy Physics
Título revista abreviado:J. High Energy Phys.
ISSN:11266708
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2014_n5_p1_TheATLAScollaboration

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Citas:

---------- APA ----------
(2014) . Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7TeV with the ATLAS detector. Journal of High Energy Physics, 2014(5), 1-67.
http://dx.doi.org/10.1007/JHEP05(2014)068
---------- CHICAGO ----------
The ATLAS collaboration. "Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7TeV with the ATLAS detector" . Journal of High Energy Physics 2014, no. 5 (2014) : 1-67.
http://dx.doi.org/10.1007/JHEP05(2014)068
---------- MLA ----------
The ATLAS collaboration. "Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7TeV with the ATLAS detector" . Journal of High Energy Physics, vol. 2014, no. 5, 2014, pp. 1-67.
http://dx.doi.org/10.1007/JHEP05(2014)068
---------- VANCOUVER ----------
The ATLAS collaboration. Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7TeV with the ATLAS detector. J. High Energy Phys. 2014;2014(5):1-67.
http://dx.doi.org/10.1007/JHEP05(2014)068