LHCb (unpublished): link
| Parameter | Measurement |
|---|---|
| \(\frac{{\cal{B}} ( B^{-} \to \eta_c K^{-} ) \times {\cal{B}} ( \eta_c \to p\bar{p} ) }{ {\cal{B}} ( B^{-} \to J/\psi K^{-} ) \times {\cal{B}} ( J/\psi \to p\bar{p} )}\) | \([0.71 \pm 0.20\mbox{ (stat)} \pm 0.07\mbox{ (syst)}] \times 10^{0}\) (superseded) |