Abstract
We have studied and decays using of data collected at the resonance with the Belle detector at the KEKB collider. This highly pure sample is used to measure the branching fraction, () and the fractions of event types at the energy, in particular . We also determine the masses and . In addition, we observe decays with a significance of and measure .
- Received 15 September 2008
DOI:https://doi.org/10.1103/PhysRevLett.102.021801
©2009 American Physical Society