Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector

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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 = 7 TeV 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 semile...

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Autores principales:	Alconada Verzini, María Josefina, Alonso, Francisco, Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., The ATLAS Collaboration
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2014
Materias:	Ciencias Exactas Física electroweak interaction hadron-hadron scattering charm physics ATLAS detector
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/78942
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-78942
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Física electroweak interaction hadron-hadron scattering charm physics ATLAS detector
spellingShingle	Ciencias Exactas Física electroweak interaction hadron-hadron scattering charm physics ATLAS detector Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector
topic_facet	Ciencias Exactas Física electroweak interaction hadron-hadron scattering charm physics ATLAS detector
description	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 = 7 TeV 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+0.26 −0.30 at Q2 = 1.9 GeV2, 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.
format	Articulo Articulo
author	Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration
author_facet	Alconada Verzini, María Josefina Alonso, Francisco Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration
author_sort	Alconada Verzini, María Josefina
title	Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector
title_short	Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector
title_full	Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector
title_fullStr	Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector
title_full_unstemmed	Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector
title_sort	measurement of the production of a w boson in association with a charm quark in pp collisions at √s = 7 tev with the atlas detector
publishDate	2014
url	http://sedici.unlp.edu.ar/handle/10915/78942
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bdutipo_str	Repositorios
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Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7 TeV with the ATLAS detector

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