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

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Autor principal: The ATLAS collaboration
Formato: JOUR
Materias:
Charm physics
Electroweak interaction
Hadron-Hadron scattering
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11266708_v2014_n5_p1_TheATLAScollaboration
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_11266708_v2014_n5_p1_TheATLAScollaboration
record_format dspace
spelling todo:paper_11266708_v2014_n5_p1_TheATLAScollaboration2023-10-03T16:07:10Z Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7TeV with the ATLAS detector The ATLAS collaboration Charm physics Electroweak interaction Hadron-Hadron scattering 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11266708_v2014_n5_p1_TheATLAScollaboration
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Charm physics
Electroweak interaction
Hadron-Hadron scattering
spellingShingle Charm physics
Electroweak interaction
Hadron-Hadron scattering
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
topic_facet Charm physics
Electroweak interaction
Hadron-Hadron scattering
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 = 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.
format JOUR
author The ATLAS collaboration
author_facet The ATLAS collaboration
author_sort The ATLAS collaboration
title Measurement of the production of a W boson in association with a charm quark in pp collisions at √s = 7TeV 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 = 7TeV 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 = 7TeV 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 = 7TeV 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 = 7TeV 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 = 7tev with the atlas detector
url http://hdl.handle.net/20.500.12110/paper_11266708_v2014_n5_p1_TheATLAScollaboration
work_keys_str_mv AT theatlascollaboration measurementoftheproductionofawbosoninassociationwithacharmquarkinppcollisionsats7tevwiththeatlasdetector
_version_ 1807322298607206400

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