Abstract
We search for the radiative leptonic tau decays and using of data collected by the CLEO-II experiment at the Cornell Electron Storage Ring. We present a first observation of the process. For this channel we measure the branching fraction . An upper limit is established for the second channel: at 90% C.L. Both results are consistent with the rates expected from standard model predictions.
- Received 22 November 1995
DOI:https://doi.org/10.1103/PhysRevLett.76.2637
©1996 American Physical Society