%0 Journal Article
%T Measurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar
%A BABAR Collaboration (Lees, J. P. et al
%A Martinez-Vidal, F.
%A Oyanguren, A.
%J Physical Review Letters
%D 2020
%V 124
%N 15
%I Amer Physical Soc
%@ 0031-9007
%G English
%F BABARCollaborationLees_etal2020
%O WOS:000526038600003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4373), last updated on Wed, 29 Apr 2020 11:06:45 +0000
%X A study of the two-body decays B-+/- -> Xc (c) over barK +/-, where X-c (c) over bar 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 3 sigma level. The absolute branching fraction B[B+ -> X(3872)K+] = [2.1 +/- 0.6(stat) +/- 0.3(syst)] x 10(-4) is measured for the first time. It follows that B[X(3872) -> J/psi pi(+)pi(-)] = (4.1 +/- 1.3)%, supporting the hypothesis of a molecular component for this resonance.
%R 10.1103/PhysRevLett.124.152001
%U https://arxiv.org/abs/1911.11740
%U https://doi.org/10.1103/PhysRevLett.124.152001
%P 152001-8pp