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Accès ouvert déclaré 2026 article

Measurement of the Top-Quark Production Cross Section and Charge Asymmetry at LHCb

0Citations signalées — pas une note de qualité
87Institutions déclarées
21Pays d’affiliation déclarés

Résumé fourni par la source

The first measurements of the top- and antitop-quark differential production cross sections and the top-quark charge asymmetry in the forward region are presented, using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.4 fb^{-1}. The total production cross sections of top and antitop quarks are also determined. Measurements are performed using the μ+b-jet final state within a fiducial region defined by b-jet p_{T,jet}>50 GeV and pseudorapidity 2.2<η_{jet}<4.0, with the muon from the W-boson decay required to have p_{T,μ}>25 GeV and 2.0<η_{μ}<4.5. The muon and b-jet system must satisfy p_{T}(μ+jet)>20 GeV. The measured integrated production cross sections for the top and antitop quarks are σ_{t}=0.95±0.04±0.08±0.02 pb, σ_{t[over ¯]}=0.81±0.03±0.07±0.02 pb, where the first uncertainty is statistical, the second systematic, and the third accounts for the luminosity uncertainty. The top-quark charge asymmetry is measured to be A_{C}^{t}=0.08±0.03±0.01, where the first uncertainty is statistical and the second is systematic. These results are consistent with next-to-leading order Standard Model predictions.

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Contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Measurement of the Top-Quark Production Cross Section and Charge Asymmetry at LHCb
Date Crossref
01/06/2026
Éditeur
American Physical Society (APS)
Type
journal-article

Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude et ne compte pas comme une seconde source scientifique indépendante.

Institutions déclarées

National Institute for Subatomic PhysicsUniversity of WarwickUniversity of ZurichUniversity of EdinburghUniversity of LiverpoolSyracuse UniversityUniversidade de Santiago de CompostelaUniversity of BristolUppsala UniversityUniversity of GlasgowUniversité Paris-SaclayUniversity of MichiganUniversité Clermont AuvergneJagiellonian UniversityAGH University of KrakowIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityUniversity of FreiburgVilnius UniversityEuropean Organization for Nuclear ResearchUniversity of CambridgeSorbonne UniversitéLaboratoire MédiationsUniversidade Federal do Rio de JaneiroPeking UniversityIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeIstituto Nazionale di Fisica Nucleare, Sezione di FerraraUniversidade da CoruñaIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaUniversity of Chinese Academy of SciencesIstituto Nazionale di Fisica Nucleare, Roma Tor VergataConsejo Nacional de RectoresAix-Marseille UniversitéÉcole Polytechnique Fédérale de LausanneMassachusetts Institute of TechnologyLaboratoire Leprince-RinguetUniversity of OxfordHeidelberg UniversityRuhr University BochumCentro Brasileiro de Pesquisas FísicasPontifícia Universidade Católica do Rio de JaneiroUniversity of ManchesterIstituto Nazionale di Fisica Nucleare, Sezione di BolognaEötvös Loránd UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PisaIstituto Nazionale di Fisica Nucleare, Sezione di GenovaIstituto Nazionale di Fisica Nucleare, Sezione di Roma IUniversitat Ramon LlullIstituto Nazionale di Fisica Nucleare, Sezione di PadovaTaras Shevchenko National University of KyivUniversity of BonnImperial College LondonUniversité Savoie Mont BlancLos Alamos National LaboratoryIndiana UniversityMaastricht UniversityAustralian Regenerative Medicine InstituteMonash UniversityCracow University of TechnologyInstitute of Nuclear Physics, Polish Academy of SciencesThe Ohio State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di CagliariWuhan UniversityTsinghua UniversityUniversitat de BarcelonaHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringFZU ‒ Institute of Physics of the Academy of Sciences of the Czech RepublicIstituto Nazionale di Fisica Nucleare, Sezione di BariUniversity of CincinnatiUniversity of GroningenCentral China Normal UniversitySouth China Normal UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PerugiaRutherford Appleton LaboratoryUniversitat de ValènciaUniversity of Maryland, College ParkKharkiv Institute of Physics and TechnologyIstituto Nazionale di Fisica Nucleare, Sezione di MilanoRWTH Aachen UniversityUniversidad Nacional de ColombiaUniversity of BirminghamUniversity College DublinHenan Normal UniversityLanzhou UniversityHunan UniversityMax Planck Institute for Nuclear PhysicsUniversidad Andrés Bello

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