Abstract
We report the first observation of two narrow charmed strange baryons decaying to and , respectively, using data from the CLEO II detector at the Cornell Electron Storage Ring. We interpret the observed signals as the and , the symmetric partners of the well-established antisymmetric and . The mass differences and have been measured to be and , respectively.
- Received 19 October 1998
DOI:https://doi.org/10.1103/PhysRevLett.82.492
©1999 American Physical Society