JHEP 01 (2015) 063

CMS: INSPIRE

ParameterMeasurement
\(\frac{{\sigma(B_c^-) \times \cal{B}} ( B_c^- \to J/\psi \pi^- )} {\sigma(B^-) \times {\cal{B}} ( B^- \to J/\psi K^- )}\)\([0.48 \pm 0.05\mbox{ (stat)} \pm 0.04\mbox{ (syst)} \pm 0.05\mbox{ (tau_Bc)}] \times 10^{-2}\)
\(\frac{{\cal{B}} ( B_c^- \to J/\psi \pi^+ \pi^- \pi^- )} {{\cal{B}} ( B_c^- \to J/\psi \pi^- )}\)\([2.55 \pm 0.80\mbox{ (stat)} \pm 0.33\mbox{ (syst)} ^{+0.04}_{-0.01}\mbox{ (tau_Bc)}]\)