Abstract
We present a measurement of the absolute branching fraction for using the reconstruction of the decay chain , where only the lepton and the low-momentum pion from the are detected. With data collected by the CLEO II detector at the Cornell Electron Storage Ring, we have determined .
- Received 17 December 1997
DOI:https://doi.org/10.1103/PhysRevLett.80.3193
©1998 American Physical Society