Abstract
We have measured the branching fractions for , , and . From these results and some previously measured branching fractions, we obtain , at 90% C.L., and . Implications for the “ semileptonic decay problem” (measured branching fraction being below theoretical expectations) are discussed. With the increase in the value of due to , the discrepancy is no longer statistically compelling.
- Received 23 October 1997
DOI:https://doi.org/10.1103/PhysRevLett.80.1150
©1998 American Physical Society