Comment: Used BR( Y(4S) -> B+ B- ) = BR( Y(4S) -> B0 B0bar ) = 0.5
| Parameter | Measurement |
|---|---|
| \({\cal{B}} ( B^{-} \to J/\psi \eta K^{-} )\) | \([1.08 \pm 0.23\mbox{ (stat)} \pm 0.24\mbox{ (syst)} \pm 0.03\mbox{ (psi/eta br (correlated))}] \times 10^{-4}\) |
| \({\cal{B}} ( \bar{B}^{0} \to J/\psi \eta K_S^{0} )\) | \([0.84 \pm 0.26\mbox{ (stat)} \pm 0.27\mbox{ (syst)} \pm 0.02\mbox{ (psi/eta/k br (correlated))}] \times 10^{-4}\) |
| \({{\cal{B}} ( B^{-} \to X(3872) K^{-} )\times {\cal{B}} ( X(3872) \to J/\psi \eta )}\) | \(0.077 \times 10^{-4}\) |