Abstract
We report a measurement of the branching fraction of the decay , using pairs collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider. We detect signal events with a significance of 4.2 standard deviations, including systematic uncertainties, and measure the branching fraction to be . We also perform the first measurement of direct violating asymmetry in this mode.
- Received 25 January 2006
DOI:https://doi.org/10.1103/PhysRevD.73.111105
©2006 American Physical Society