2026-04-17T07:46:22Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/1750802025-12-05T16:41:34Zcom_2072_1057col_2072_478823col_2072_478917
RECERCAT
author
Graugés Pous, Eugeni
author
BABAR Collaboration
2021-03-15T11:02:49Z2021-03-15T11:02:49Z2020-04-162021-03-15T11:02:49Z
A 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.
(c) American Physical Society, 2020 info:eu-repo/semantics/openAccess
Barions
Fraccions
Hadrons
Baryons
Fractions
Hadrons
Measurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion