Observation of charmed strange meson pair production in ${\rm Y}(2S)$ decays and in $e^{+}{e}^{-}$ annihilation at $\sqrt{s}=10.52\mathrm{GeV}$

Belle Collaboration, B. S. Gao, W. J. Zhu +165

We observe the process ${\rm Y}(2S)\to D_s^{(\ast )+}{D}_{sJ}^{-}$ and continuum production $e^{+}{e}^{-}\to D_s^{(\ast )+}{D}_{sJ}^{-}$ at $\sqrt{s}=10.52$ GeV (and their charge conjugates) using the…