Possible 2S and 1D charmed and charmed-strange mesons

Bing Chen, Ling Yuan, Ailin Zhang

Possible $2S$ and $1D$ excited $D$ and $D_s$ states are studied, the charmed states $D(2550{)}^0$, $D^{\ast }(2600)$, $D(2750{)}^0$ and $D^{\ast }(2760)$ newly observed by the BaBar Collabor…