Abstract
Using a data sample collected at the with the CLEO- detector, we present the first absolute branching fraction measurement of the decay at a statistical significance of about 4.0 standard deviations. We find 10 candidates consistent with the decay . The probability that a background fluctuation accounts for this signal is less than . We find . By restricting the invariant mass of the hadronic system to be consistent with , we obtain the product of branching fractions . Using , we obtain . The last error accounts for the uncertainties in the measured branching fractions.
- Received 29 May 2007
DOI:https://doi.org/10.1103/PhysRevLett.99.191801
©2007 American Physical Society