Using data accumulated by the CLEO I detector operating at the Cornell Electron Storage Ring, we have measured the ratio R=( e» e ) 1 where " 1 is the decay rate to final states with one charged particle. We find R=0.2231 0.0044 0.0073 where the first error is statistical and the second is systematic. Together with the measured topological one-charged-particle branching fraction, this yields the branching fraction of the lepton to electrons, Be=0.192 0.004 0.006.
|Original language||English (US)|
|Number of pages||10|
|Journal||Physical Review D|
|State||Published - 1992|
ASJC Scopus subject areas
- Nuclear and High Energy Physics