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Measurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar

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dc.contributor.authorGraugés Pous, Eugeni
dc.contributor.authorBABAR Collaboration
dc.date.accessioned2021-03-15T11:02:49Z
dc.date.available2021-03-15T11:02:49Z
dc.date.issued2020-04-16
dc.date.updated2021-03-15T11:02:49Z
dc.description.abstractA study of the two-body decays B±→Xc¯cK±, where Xc¯c refers to one charmonium state, is reported by the BABAR Collaboration using a data sample of 424  fb−1. The absolute determination of branching fractions for these decays are significantly improved compared to previous BABAR measurements. Evidence is found for the decay B+→X(3872)K+ at the 3σ level. The absolute branching fraction B[B+→X(3872)K+]=[2.1±0.6(stat)±0.3(syst)]×10−4 is measured for the first time. It follows that B[X(3872)→J/ψπ+π−]=(4.1±1.3)%, supporting the hypothesis of a molecular component for this resonance.
dc.format.extent8 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec706469
dc.identifier.issn0031-9007
dc.identifier.urihttps://hdl.handle.net/2445/175080
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.152001
dc.relation.ispartofPhysical Review Letters, 2020, vol. 124 , num. 15, p. 152001
dc.relation.urihttps://doi.org/10.1103/PhysRevLett.124.152001
dc.rights(c) American Physical Society, 2020
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationBarions
dc.subject.classificationFraccions
dc.subject.classificationHadrons
dc.subject.otherBaryons
dc.subject.otherFractions
dc.subject.otherHadrons
dc.titleMeasurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

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