Charm meson spectra ine+e−annihilation at 10.5 GeV center of mass energy

Using the CLEO detector at the Cornell Electron-positron Storage Ring, we have measured the scaled momentum spectra, $d\sigma /d{x}_p$, and the inclusive production cross sections of the charm mesons $D^{+}$, $D^0$, $D^{\star +}$, and $D^{\star 0}$ in $e^{+}{e}^{-}$ annihilation at about 10.5 GeV center of mass energy, excluding the decay products of $B$ mesons. The statistical accuracy and momentum resolution are superior to previous measurements at this energy.