Limit on the branching ratio of K(L) ---> pi0 neutrino anti-neutrino
Journal
Physical Review Letters
Journal Volume
72
Pages
3758-3761
Date Issued
1994
Author(s)
Weaver, M.
Abstract
We report on a search for the decay KL→π0νν̄ by the Fermilab E799 Collaboration. The partial width for this mode is related in a calculable way to the CP violation parameters of the standard model. In particular, the decay KL→π0νν̄ is predicted to proceed almost entirely via a direct CP violating amplitude. No events were observed, allowing us to set an upper limit on the branching ratio of B(KL→π0νν ̄)<5.8×10-5 at the 90% confidence level. © 1994 The American Physical Society.
Type
journal article