Observation of a new charmed strange meson

Using the CLEO II detector, we have obtained evidence for a new meson decaying to D⁰{K}⁺$. Its mass is 2573.${2}_{{{-}}1.6}+1.7±0.8±0.5 MeV/{c}²$ and its width is ${16}_{{{-}}4}⁺⁵±3 MeV/{c}²$. 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.