Measurements of the masses and widths of the (2455) and (2520) baryons

We present measurements of the masses and decay widths of the baryonic states (2455) and (2520) using a data sample corresponding to an integrated luminosity of 711 fb- 1 collected with the detector at the KEKB e e- asymmetric- energy collider operating at the.(4S) resonance. We report the mass differences with respect to the A(c) baryon.