Abstract
We have performed a search for the rare leptonic decays (), using data collected at the resonance by the BABAR detector at the PEP-II storage ring. In a sample of pairs we find no evidence for a signal and set an upper limit on the branching fractions and at the 90% confidence level, using a Bayesian approach.
- Received 8 April 2009
DOI:https://doi.org/10.1103/PhysRevD.79.091101
©2009 American Physical Society