Determination of the branching fractions of $B_s^0\to D_s^{\mp }{K}^{\pm }$ and $B^0\to D_s^{-}{K}^{+}$

LHCb collaboration, R. Aaij, B. Adeva +701

Measurements are presented of the branching fractions of the decays $B_s^0\to D_s^{\mp }{K}^{\pm }$ and $B^0\to D_s^{-}{K}^{+}$ relative to the decays $B_{s}^{0} \to D_{s}^…