Abstract
In a sample of pairs collected with the CLEO detector we make the first observation of decays to an and a kaon. We measure branching fractions and , where the first error is statistical, the second is systematic, and the third is from the branching fraction uncertainty. From these we extract the decay constant in the factorization approximation, . We also search for decays to a and a kaon. No evidence for a signal is found and we set C.L. upper limits: and .
- Received 7 July 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.30
©2001 American Physical Society