Observation of a New Charmed Strange Meson

The CLEO Collaboration

Using the CLEO-II detector, we have obtained evidence for a new meson decaying to $D^0{K}^{+}$. Its mass is $2573.2_{-1.6}^{+1.7}\pm 0.8\pm 0.5$ {}~MeV/$c^2$ and its width is $16^{+5}…