None
LHCb:
arXiv:1412.7654
Parameter
Measurement
\(\frac{{\cal{B}} ( \bar{B}_s^0 \to D_s^+ K^- )}{{\cal{B}} ( \bar{B}_s^0 \to D_s^+ \pi^- )}\)
\([0.0752 \pm 0.0015\mbox{ (stat)} \pm 0.0019\mbox{ (syst)}]\)