A limit on the lepton-family number violating process π0 → μ±e

P. Krolak, R. A. Briere, E. Cheu, D. A. Harris, K. S. McFarland, A. Roodman, B. Schwingenheuer, S. V. Somalwar, Y. W. Wah, B. Winstein, R. Winston, K. Arisaka, D. Roberts, W. Slater, M. Weaver, A. R. Barker, E. C. Swallow, G. J. Bock, R. Coleman, M. CrislerJ. Enagonio, R. Ford, Y. B. Hsiung, D. A. Jensen, 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, G. B. Thomson, Y. Zou

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


A FNAL E799 Collaboration has carried out a search for the lepton-family number violating decay π0 → μ±e using π0's produced from KL → π0π0π0 decays in flight. No events were observed. Assuming that lepton-family number violation is charge independent, the 90% confidence level upper limit on 1 2[BR(π0 → μ+e-) + BR(π0 → μ-e+)] was determined to be 8.6 × 10-9.

Original languageEnglish (US)
Pages (from-to)407-410
Number of pages4
JournalPhysics Letters B
Issue number3-4
StatePublished - Jan 13 1994

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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