Phys. Rev. Lett. 72, 3758–3761 (1994)Limit on the Branching Ratio of KL→π0νν̅Received 8 March 1994; published in the issue dated 13 June 1994 We report on a search for the decay KL→π0νν̅ 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→π0νν̅ 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→π0νν̅ )<5.8×10-5 at the 90% confidence level. © 1994 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.72.3758
DOI:
10.1103/PhysRevLett.72.3758
PACS:
13.20.Eb, 11.30.Er
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