Abstract
We measure the branching fraction of using the full data sample containing pairs collected with the Belle detector at the KEKB asymmetric-energy collider. Events with pairs are tagged by reconstructing one of the mesons decaying into hadronic final states, and candidates are detected in the recoil. We find evidence for with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction .
- Received 16 November 2012
DOI:https://doi.org/10.1103/PhysRevLett.110.131801
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