Observation of excited charmed mesons.

Using the Tagged Photon Spectrometer and a high-energy photon beam, we havesearched for excited states of charm in Fermilab experiment E691. We have foundevidence for a state of mass 2459+-3 (stat.) +-2 (syst.)MeV//ital c//sup 2/ and width 20+-10+-5 MeV//ital c//sup 2/which decays to /ital D//sup +/..pi../sup /minus//. The fraction of /ital D//sup +/coming from /ital D//sup **0/(2459) is 0.07+-0.02+-0.02. Wealso confirm the/ital D//sup **0/(2420)/r arrow//ital D//sup *+/..pi../sup /minus// decayobserved previously in /ital e//sup +/e/sup /minus// experiments and presentevidence for its charged counterpart.