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Accès ouvert déclaré 2017 article

First Observation of B[superscript +] → D[subscript s][superscript +]K][superscript +]K[superscript −] Decays and a Search for B[superscript +] → D[subscript s][superscript +]ϕ Decays

14Citations signalées, ce qui n’est pas une note de qualité
95Institutions déclarées
16Pays d’affiliation déclarés

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

Le résumé fourni par la source

A search for $B^{+} \\to D_s^{+}K^{+}K^{-}$ decays is performed using $pp$ collision data corresponding to an integrated luminosity of 4.8 fb$^{-1}$, collected at centre-of-mass energies of 7, 8 and 13$\\,$TeV with the LHCb experiment. A significant signal is observed for the first time and the branching fraction is determined to be \\begin{equation*} \\mathcal{B}(B^{+} \\to D_s^{+}K^{+}K^{-} ) = (7.1 \\pm 0.5 \\pm 0.6 \\pm 0.7) \\times 10^{-6}, \\end{equation*} where the first uncertainty is statistical, the second systematic and the third due to the uncertainty on the branching fraction of the normalisation mode $B^{+} \\to D_s^{+} \\overline{\\kern -0.2em D}^{0}$. A search is also performed for the pure annihilation decay $B^{+} \\to D_s^{+}\\phi$. No significant signal is observed and a limit of \\begin{equation*} \\mathcal{B}(B^{+} \\to D_s^{+}\\phi) < 4.9 \\times 10^{-7}~(4.2 \\times 10^{-7}) \\end{equation*} is set on the branching fraction at 95$\\%$ (90$\\%$) confidence level.

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Les institutions déclarées

European Organization for Nuclear ResearchUniversidade de Santiago de CompostelaUniversity of BristolCentre National de la Recherche ScientifiqueUniversité Clermont AuvergneInstitut National de Physique Nucléaire et de Physique des ParticulesClermont UniversitéUniversity of CincinnatiTU Dortmund UniversityUniversity of GlasgowUniversitat de BarcelonaNational Institute for Subatomic PhysicsPetersburg Nuclear Physics InstituteImperial College LondonUniversidade Federal do Rio de JaneiroIstituto Nazionale di Fisica Nucleare, Sezione di PadovaUniversité 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 ParkUniversity of ManchesterHeidelberg UniversityAix-Marseille UniversitéCentre de physique des particules de MarseilleInstitute for High Energy PhysicsSyracuse UniversityUniversity of ZurichIstituto Nazionale di Fisica Nucleare, Sezione di Roma IUniversity of WarwickPontifícia Universidade Católica do Rio de JaneiroYandex School of Data AnalysisInstitute for Theoretical and Experimental PhysicsNational Centre for Nuclear ResearchUniversité Savoie Mont BlancIstituto Nazionale di Fisica Nucleare, Sezione di PisaCentro Brasileiro de Pesquisas FísicasUniversity of Chinese Academy of SciencesUniversité Paris CitéSorbonne UniversitéLaboratoire de Physique Nucléaire et de Hautes ÉnergiesIstituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiRWTH Aachen UniversityLomonosov Moscow State UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BolognaUniversity of BirminghamUniversity of OxfordMassachusetts Institute of TechnologyUniversity of LiverpoolInstitute of Nuclear Physics, Polish Academy of SciencesIstituto Nazionale di Fisica Nucleare, Sezione di CagliariWuhan UniversityIstituto Nazionale di Fisica Nucleare, Roma Tor VergataIstituto Nazionale di Fisica Nucleare, Sezione di GenovaUniversity of EdinburghUniversity of CambridgeHoria Hulubei National Institute for R and D in Physics and Nuclear EngineeringTsinghua UniversityIstituto Nazionale di Fisica Nucleare, Sezione di BariMax Planck Institute for Nuclear PhysicsMax Planck SocietyAGH University of KrakowCentral China Normal UniversityKharkiv Institute of Physics and TechnologyRutherford Appleton LaboratorySiberian Branch of the Russian Academy of SciencesBudker Institute of Nuclear PhysicsInstitute for Nuclear ResearchIstituto Nazionale di Fisica Nucleare, Sezione di MilanoUniversitat de ValènciaInstituto de Física CorpuscularUniversity of RostockInstitute for Nuclear ResearchKurchatov InstituteLaboratoire Leprince-RinguetUniversity College DublinUniversidad Nacional de ColombiaUniversity of GroningenUniversity of Bari Aldo MoroUniversity of FerraraUniversity of BolognaUniversity of GenoaUniversity of CagliariUniversity of Rome Tor VergataSapienza University of RomeUniversity of BasilicataNovosibirsk State UniversityUniversity of PaduaUniversity of PisaNational Research Tomsk State UniversityTomsk Polytechnic UniversityUniversity of UrbinoUniversitat Ramon LlullP.N. Lebedev Physical Institute of the Russian Academy of Sciences

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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