Abstract
We report first observations of and . The results are obtained from of data collected at the resonance with the Belle detector at the KEKB collider. We obtain the branching fractions , and . The ratio of the two branching fractions is measured to be .
- Received 31 January 2012
DOI:https://doi.org/10.1103/PhysRevLett.108.181808
© 2012 American Physical Society