Abstract
The rare decay is searched for in of data, corresponding to pairs, collected with the Belle detector at the KEKB asymmetric-energy collider. No evidence for the signal is found, and an upper limit of at 90% confidence level is set for the corresponding branching fraction.
- Received 12 January 2006
DOI:https://doi.org/10.1103/PhysRevD.73.051107
©2006 American Physical Society