CMS (unpublished): link
| Parameter | Measurement |
|---|---|
| \(\frac{{\sigma(B_c^-) \times \cal{B}} ( B_c^- \to J/\psi \pi^- )} {\sigma(B^-) \times {\cal{B}} ( B^- \to J/\psi K^- )}\) | \([0.48 \pm 0.05\mbox{ (stat)} \pm 0.04\mbox{ (syst)} ^{+0.05}_{-0.03}\mbox{ (tau_Bc)}] \times 10^{-2}\) |
| \(\frac{{\cal{B}} ( B_c^- \to J/\psi \pi^+ \pi^- \pi^- )} {{\cal{B}} ( B_c^- \to J/\psi \pi^- )}\) | \([2.43 \pm 0.76\mbox{ (stat)} ^{+0.46}_{-0.44}\mbox{ (syst)}]\) |