Limit on Production of Charmed Particles in Association with theJ

Abstract

We have searched for charmed particles produced hadronically in coincidence with the $J$ particle by looking for muons from the leptonic or semileptonic decays of the charmed particles. In a sample of 2500 $J\text{'}\mathrm{s}$, we see no muons above the level expected from $\pi$ and $K$ decays.