Measurement of charm production cross sections ine+e−annihilation at energies between 3.97 and 4.26 GeV

Using the CLEO-c detector at the Cornell Electron Storage Ring, we have measured inclusive and exclusive cross sections for the production of $D^{+}$, $D^0$ and $D_s^{+}$ mesons in $e^{+}{e}^{-}$ annihilations at 13 center-of-mass energies between 3.97 and 4.26 GeV. Exclusive cross sections are presented for final states consisting of two charm mesons ($D\overline{D}$, $D^{*}\overline{D}$, $D^{*}{\overline{D}}^{*}$, $D_s^{+}{D}_s^{-}$, $D_s^{*+}{D}_s^{-}$, and $D_s^{*+}{D}_s^{*-}$) and for processes in which the charm-meson pair is accompanied by a pion. No enhancement in any final state is observed at the energy of the $Y(4260)$.