Limit on the branching ratio of KL→π0νν̄

M. Weaver, K. Arisaka, D. Roberts, W. Slater, R. A. Briere, E. Cheu, D. A. Harris, A. Roodman, B. Schwingenheuer, Y. W. Wah, B. Winstein, R. Winston, A. R. Barker, E. C. Swallow, G. J. Bock, R. Coleman, M. Crisler, J. Enagonio, R. Ford, Y. B. HsiungD. A. Jensen, K. S. McFarland, E. Ramberg, R. Tschirhart, E. M. Collins, G. D. Gollin, T. Nakaya, T. Yamanaka, P. Gu, P. Haas, W. P. Hogan, S. K. Kim, J. N. Matthews, S. S. Myung, S. Schnetzer, S. V. Somalwar, G. B. Thomson, Y. Zou

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)3758-3761
Number of pages4
JournalPhysical review letters
Issue number24
StatePublished - 1994

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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