Abstract
The recent discovery of a large violating asymmetry in mode has prompted us to seach for the associated decay mode in the KTeV-E799 experiment at Fermilab. In decays, one candidate event has been observed with an expected background of 0.3 event, resulting in an upper limit for the branching ratio of at the 90% C.L.
- Received 11 December 2001
DOI:https://doi.org/10.1103/PhysRevLett.89.211801
©2002 American Physical Society