Observation of a new charmed strange meson.
Using the CLEO II detector, we have obtained evidence for a new meson decaying to [ital D][sup 0][ital K][sup +]. Its mass is 2573.2[sub [minus]1.6][sup +1.7][plus minus]0.8[plus minus]0.5 MeV/[ital c][sup 2] and its width is 16[sub [minus]4][sup +5][plus minus]3 MeV/[ital c][sup 2]. Although we do not establish its spin and parity, the new meson is consistent with predictions for an [ital L]=1, [ital S]=1, [ital J][sup [ital P]]=2[sup +] charmed strange state.