TY  - JOUR
AU  - BABAR Collaboration (Lees, J. P. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
PY  - 2020
DA  - 2020//
TI  - Measurements of the Absolute Branching Fractions of B-+/- -> K(+/-)Xc(c)over-bar
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 152001
EP  - 8pp
VL  - 124
IS  - 15
PB  - Amer Physical Soc
AB  - 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.
SN  - 0031-9007
UR  - https://arxiv.org/abs/1911.11740
UR  - https://doi.org/10.1103/PhysRevLett.124.152001
DO  - 10.1103/PhysRevLett.124.152001
LA  - English
N1  - WOS:000526038600003
ID  - BABARCollaborationLees_etal2020
ER  -