Search for hidden-charm tetraquark with strangeness in $e^{+}{e}^{-}\to K^{+}{D}_s^{\ast -}{D}^{\ast 0}+c.c.$

BESIII Collaboration, M. Ablikim, M. N. Achasov +571

We report a search for a heavier partner of the recently observed $Z_{cs}(3985{)}^{-}$ state, denoted as $Z_{cs}^{\prime -}$, in the process $e^{+} e^{-}\rightarrow K^{+}D_{s}^{*-}D^…