Observation of a New Charmed Strange Meson

Abstract

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 $16_{-4}^{+5}\pm 3$~MeV/$c^2$. Although we do not establish its spin and parity, the new meson is consistent with predictions for an $L=1$, $S=1$, $J_P=2^{+}$ charmed strange state.

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