Limits On Charmed-Meson Production In E+E- Annihilation At 4.8-Gev Center-Of-Mass Energy

Data from ${e}^{+}{e}^{\ensuremath{-}}$ annihilation into hadrons at 4.8 GeV center-of-mass energy were used to search for charmed mesons in the mass range 1.5 to 4.0 GeV/${\mathit{c}}^{2}$. We looked for narrow peaks in the invariant-mass distributions for ${K}^{\ensuremath{\mp}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, ${{K}_{s}}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, ${K}^{+}{K}^{\ensuremath{-}}$, ${K}^{\ensuremath{\mp}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, ${{K}_{s}}^{0}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$, ${{K}_{s}}^{0}{K}^{\ifmmode\pm\else\textpm\fi{}}$, and ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{\ifmmode\pm\else\textpm\fi{}}$. We present upper limits for the inclusive production cross section times the branching ratio for charmed mesons having these decay modes.