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We study the processes $e^+e^-\rightarrow K^{0}_{\rm S}D_s^+D^{*-}$ and$e^+e^-\rightarrow K^{0}_{\rm S}D_s^{*+}D^{-}$, as well as their chargeconjugated processes, at five center-of-mass energies between 4.628~GeV and4.699~GeV, using data samples corresponding to an integrated luminosity of$3.8~\rm{fb^{-1}}$ collected by the BESIII detector at the BEPCII storage ring.Based on a partial reconstruction technique, we find evidence of a structurenear the thresholds for $D_s^+D^{*-}$ and $D_s^{*+}D^{-}$ production in the$K^{0}_{\rm S}$ recoil-mass spectrum, which we refer to as the $Z_{cs}(3985)^0$. Fitting with a Breit-Wigner line shape, we find the mass ofthe structure to be $(3992.2\pm{1.7}\pm{1.6})~\rm{MeV}/c^2$ and the width to be$(7.7_{-3.8}^{+4.1}\pm{4.3})~\rm{MeV}$, where the first uncertainties arestatistical and the second are systematic. The significance of the $Z_{cs}(3985)^0$ signal is found to be $4.6\sigma$ including both thestatistical and systematic uncertainty. We report the Born cross sectionmultiplied by the branching fraction at different energy points. The mass ofthe $Z_{cs}(3985)^0$ is close to that of the $Z_{cs}(3985)^+$. Assuming SU(3)symmetry, the cross section of the neutral channel is consistent with that ofthe charged one. Hence, we conclude that the $Z_{cs}(3985)^0$ is the isospinpartner of the $Z_{cs}(3985)^+$.

physical review letters

Evidence for a neutral near-threshold structure in the $K^{0}_{\rm S}$  recoil-mass spectra in $e^+e^-\rightarrow K^{0}_{\rm S}D_s^+D^{*-}$ and  $e^+e^-\rightarrow K^{0}_{\rm S}D_s^{*+}D^{-}$