Abstract
We report a search for and in decays. We set an upper limit of and at 90% confidence level. We also measure at 90% confidence level. The results reported here are obtained from events collected at the resonance with the Belle detector at the KEKB asymmetric-energy collider.
- Received 15 April 2019
DOI:https://doi.org/10.1103/PhysRevD.99.111101
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Published by the American Physical Society