Abstract
We report a study of and decay modes using events collected at the resonance with the Belle detector at the KEKB energy-asymmetric collider. We observe and report the first evidence for in decays, while in a search for no significant signal is found. We measure the branching fractions, , , (upper limit at 90% C.L.), and also provide upper limits for other searches.
- Received 2 May 2011
DOI:https://doi.org/10.1103/PhysRevLett.107.091803
© 2011 American Physical Society