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Accès ouvert déclaré 2019 article

Measurement of the Mass Difference Between Neutral Charm-Meson Eigenstates

68Citations signalées, ce qui n’est pas une note de qualité
88Institutions déclarées
16Pays d’affiliation déclarés

Rattachement africain : nl, ch, es, gb, us, fr, it, de, ru, br, pl, cn, ro, ua, ie, co. Niveau de preuve : code pays fourni par la source.

Le résumé fourni par la source

We report a measurement of the mass difference between neutral charm-meson eigenstates using a novel approach that enhances sensitivity to this parameter. We use $2.3\ifmmode\times\else\texttimes\fi{}{10}^{6}$ ${D}^{0}\ensuremath{\rightarrow}{K}_{\mathit{S}}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decays reconstructed in proton-proton collisions collected by the LHCb experiment in 2011 and 2012. Allowing for $CP$ violation in mixing and in the interference between mixing and decay, we measure the $CP$-averaged normalized mass difference ${x}_{CP}=[2.7\ifmmode\pm\else\textpm\fi{}1.6(\text{stat})\ifmmode\pm\else\textpm\fi{}0.4(\text{syst})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$ and the $CP$-violating parameter $\mathrm{\ensuremath{\Delta}}x=[\ensuremath{-}0.53\ifmmode\pm\else\textpm\fi{}0.70(\text{stat})\ifmmode\pm\else\textpm\fi{}0.22(\text{syst})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}3}$. The results are consistent with $CP$ symmetry. These determinations are the most precise from a single experiment and, combined with current world-average results, yield the first evidence that the masses of the neutral charm-meson eigenstates differ.

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Le contrôle bibliographique ouvert

DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.

Titre Crossref
Measurement of the Mass Difference Between Neutral Charm-Meson Eigenstates
Date Crossref
14/06/2019
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 il ne compte pas comme une seconde source scientifique indépendante.

Les institutions déclarées

National Institute for Subatomic PhysicsUniversity of ZurichUniversidade de Santiago de CompostelaUniversity of BristolUniversity of MichiganSyracuse UniversityCentre National de la Recherche ScientifiqueUniversité Clermont AuvergneInstitut National de Physique Nucléaire et de Physique des ParticulesUniversity of CincinnatiIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiTU Dortmund UniversityEuropean Organization for Nuclear ResearchUniversity of GlasgowUniversitat de BarcelonaKurchatov InstitutePetersburg Nuclear Physics InstituteImperial College LondonUniversidade Federal do Rio de JaneiroUniversité Paris-SudUniversité Paris-SaclayIstituto Nazionale di Fisica Nucleare, Sezione di FirenzeÉcole Polytechnique Fédérale de LausanneIstituto Nazionale di Fisica Nucleare, Sezione di FerraraUniversity of Maryland, College ParkAix-Marseille UniversitéCentre de physique des particules de MarseilleInstitute for High Energy PhysicsYandex School of Data AnalysisIstituto Nazionale di Fisica Nucleare, Sezione di CagliariHeidelberg UniversityUniversity of WarwickUniversity of ManchesterIstituto Nazionale di Fisica Nucleare, Sezione di GenovaNational University of Science and TechnologyInstitute for Theoretical and Experimental PhysicsNational Centre for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di PisaCentro Brasileiro de Pesquisas FísicasUniversity of Chinese Academy of SciencesIstituto Nazionale di Fisica Nucleare, Sezione di Milano BicoccaDélégation Paris 7Université Paris CitéSorbonne UniversitéSorbonne Paris CitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesRWTH Aachen UniversityLomonosov Moscow State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di PadovaIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of CambridgeInstitute of Nuclear Physics, Polish Academy of SciencesUniversity of BirminghamUniversity of OxfordIstituto Nazionale di Fisica Nucleare, Sezione di Roma IMassachusetts Institute of TechnologySiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsUniversity of LiverpoolWuhan UniversityTsinghua UniversityIstituto Nazionale di Fisica Nucleare, Roma Tor VergataUniversité Savoie Mont BlancUniversité Grenoble AlpesUniversity of EdinburghHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringLos Alamos National LaboratoryIstituto Nazionale di Fisica Nucleare, Sezione di BariMax Planck Institute for Nuclear PhysicsAGH University of KrakowNational Research University Higher School of EconomicsCentral China Normal UniversityKharkiv Institute of Physics and TechnologyRutherford Appleton LaboratoryInstitute for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversitat de ValènciaInstituto de Física CorpuscularPontifícia Universidade Católica do Rio de JaneiroUniversity of RostockNational Research Tomsk State UniversityTomsk Polytechnic UniversityInstitute for Nuclear ResearchSouth China Normal UniversityInstitute of High Energy PhysicsUniversity College DublinUniversidad Nacional de ColombiaUniversity of Groningen

Une affiliation ne permet pas de déduire la nationalité d’un auteur.

Les sujets associés

Particle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research

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