PoS - Proceedings of Science
Volume 364 - European Physical Society Conference on High Energy Physics (EPS-HEP2019) - QCD and Hadronic Physics
Measurements of the Absolute Branching Fractions of $B^{\pm} \to K^{\pm} X_{c\bar{c}}$
G.H.M. Wormser* on behalf of the BABAR collaboration
*corresponding author
Full text: Not available
Abstract
{A study of the two body decays B$^{+}\rightarrow X_{c\bar c}$K$^{+}$, where X$_{c\bar c}$ refers to one charmonium state, is reported by the BABAR experiment using a data sample of 424 fb$^{-1}$. The absolute determination of many branching fractions for these decays are significantly improved compared to previous BABAR measurements. Evidence is found at 3 $\sigma$ level for the decay B$^{+}\rightarrow X(3872)$K$^{+}$. The absolute branching fraction BR(B$^{+}\rightarrow X(3872)$K$^{+}$) = (2.1$\pm$0.6(stat)$\pm$0.3(syst))$\cdot$10$^{-4}$ is measured for the first time. From this, it follows that the branching fraction BR($X(3872)\
\rightarrow J/\psi\pi^+\pi^-$) is equal to (4.1$\pm$1.3)\%, supporting the hypothesis of a molecular component for this resonance.}
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.