Abstract
We report branching fraction measurements of the decays and based on of data collected near the resonance with the Belle experiment at the KEKB asymmetric-energy collider. This data sample contains 772 million events. One of the two mesons is fully reconstructed in a hadronic decay mode. Among the remaining (“signal-”) daughters, we search for the meson in two decay channels, and , and reconstruct the meson in with subsequent decay of the into . Combining the two modes and using an extended maximum likelihood, the branching fraction is measured to be . For , we observe no significant signal and set an upper limit of at 90% confidence level.
- Received 31 March 2017
DOI:https://doi.org/10.1103/PhysRevD.96.091102
© 2017 American Physical Society