Limit on the branching ratio of KL-->π0νν¯
Abstract
We report on a search for the decay KL-->π0νν¯ 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-->π0νν¯ 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.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 1994
- DOI:
- 10.1103/PhysRevLett.72.3758
- Bibcode:
- 1994PhRvL..72.3758W
- Keywords:
-
- 13.20.Eb;
- 11.30.Er;
- Decays of K mesons;
- Charge conjugation parity time reversal and other discrete symmetries