Limits on Charmed-Meson Production ine+e−Annihilation at 4.8-GeV Center-of-Mass Energy

Abstract

Data from $e^{+}{e}^{-}$ 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 $K^{\mp }{\pi }^{\pm }$, ${K_s}^0{\pi }^{+}{\pi }^{-}$, ${\pi }^{+}{\pi }^{-}$, $K^{+}{K}^{-}$, $K^{\mp }{\pi }^{\pm }{\pi }^{\pm }$, ${K_s}^0{\pi }^{\pm }$, ${K_s}^0{K}^{\pm }$, and ${\pi }^{+}{\pi }^{-}{\pi }^{\pm }$. We present upper limits for the inclusive production cross section times the branching ratio for charmed mesons having these decay modes.