Abstract
We report on a search for the decay carried out as a part of E799-II, a rare decay experiment at Fermilab. Within the standard model, the decay is dominated by direct violating processes, and thus an observation of the decay implies confirmation of direct violation. No events were observed, and we set an upper limit for the branching ratio of to be at the 90% confidence level.
- Received 8 July 1999
DOI:https://doi.org/10.1103/PhysRevD.61.072006
©2000 American Physical Society