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http://hdl.handle.net/2445/175080
Title: | Measurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar |
Author: | Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Barions Fraccions Hadrons Baryons Fractions Hadrons |
Issue Date: | 16-Apr-2020 |
Publisher: | American Physical Society |
Abstract: | 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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.124.152001 |
It is part of: | Physical Review Letters, 2020, vol. 124 , num. 15, p. 152001 |
URI: | http://hdl.handle.net/2445/175080 |
Related resource: | https://doi.org/10.1103/PhysRevLett.124.152001 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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