Observation of the ${\Omega }_{\mathit{c}}^0$ Charmed Baryon at CLEO

The CLEO experiment at the CESR collider has used $13.7{\mathrm{fb}}^{-1\mathrm{}}$ of data to search for the production of the ${\Omega }_c^0$ (css ground state) in $e^{+}{e}^{-}$ collisions at $\sqrt{s}\simeq 10.6\mathrm{GeV}$. The modes used to study the ${\Omega }_c^0$ are ${\Omega }^{-}{\pi }^{+}$, ${\Omega }^{-}{\pi }^{+}{\pi }^0$, ${\Xi }^{-}{K}^{-}{\pi }^{+}{\pi }^{+}$, ${\Xi }^0{K}^{-}{\pi }^{+}$, and ${\Omega }^{-}{\pi }^{+}{\pi }^{+}{\pi }^{-}$. We observe a signal of $40.4\pm 9.0\left(\mathrm{stat}\right)$ events at a mass of $2694.6\pm 2.6\left(\mathrm{stat}\right)\pm 1.9\left(\mathrm{syst}\right)\mathrm{MeV}/c^2$, for all modes combined.