Inclusive production of ($D^0$, ${\overline{D}}^0$) and $D^{\pm }$ mesons have been observed in $e^{+}{e}^{-}$ annihilation at 29 GeV. The signals correspond to $R$ values of $R(D^0+{\overline{D}}^0)=3.25\mathrm{}\pm 1.2$ and $R(D^{+}+D^{-})=1.35\mathrm{}\pm 0.6$. $D^{*\pm }$ production is also observed via the process $D^{*+}\to D^0{\pi }^{+}$ and its charge conjugate. The $D$ and $D^{*}$ production rates are compared.

• Received 29 July 1983

DOI:https://doi.org/10.1103/PhysRevLett.51.1147