F. Abe et al., RECONSTRUCTION OF B-0-]J PSI K-S(0) AND MEASUREMENT OF RATIOS OF BRANCHING RATIOS INVOLVING B-]J/PSI K-ASTERISK AND B+-]J/PSI K+/, Physical review letters, 76(12), 1996, pp. 2015-2020
We report on the reconstruction of the decay mode B-0 --> J/psi K-S(0)
using 19.3 pb(-1) of data collected by the Collider Detector at Fermi
lab in <(p)over bar p> collisions at root s = 1.8 TeV. A signal of 41.
8 +/- 6.9 events, with a signal-to-background ratio of 9:1, is observe
d. Three additional decay modes B+ --> J/psi K+, B-0 --> J/psi K(892)
(0), and B+ --> J/psi K(892)(+) are reconstructed. We measure three r
atios of branching ratios, each one relative to the B+ --> J/psi K+ mo
de. We also report the ratio of decay rates, Gamma(B --> J/psi K)/Gam
ma(B --> J/psi K), for the vector-vector relative to the vector-pseudo
scalar modes, to be 1.32 +/- 0.23(stat) +/- 0.16(syst).