Abstract
We report a study of the decay using of data collected at or near the and resonances with the Belle detector at the KEKB asymmetric energy collider. The measured time-integrated asymmetry is , and the branching fraction is , where the first uncertainty is statistical, the second is systematic, and the third is due to the normalization mode (). These results are significantly more precise than previous measurements available for this mode. The measurement is consistent with the standard model expectation.
- Received 22 May 2017
DOI:https://doi.org/10.1103/PhysRevLett.119.171801
© 2017 American Physical Society