New limit for the lepton-family-number nonconserving decay μ+→ e+γ

M. L. Brooks, Y. K. Chen, M. D. Cooper, P. S. Cooper, M. Dzemidzic, A. Empl, C. A. Gagliardi, G. E. Hogan, E. B. Hughes, E. V. Hungerford, C. C.H. Jui, J. E. Knott, D. D. Koetke, M. A. Kroupa, K. A. Lan, R. Manweiler, B. W. Mayes, R. E. Mischke, L. E. Piilonen, T. D.S. StanislausK. M. Stantz, J. J. Szymanski, R. E. Tribble, X. L. Tu, L. A. Van Ausdeln7, W. H. von Witsch3, S. C. Wright, K. O.H. Ziock

Research output: Contribution to journalArticle

582 Scopus citations


An experiment has been performed to search for the muon- and electron-number nonconserving decay μ+→ e+γ. The upper limit for the branching ratio is found to be Γ(μ+→ e+γ)/Γ(μ+→ e+νν ⊯) < 1.2 × 10-11with 90% confidence.

Original languageEnglish (US)
Pages (from-to)1521-1524
Number of pages4
JournalPhysical Review Letters
Issue number8
StatePublished - Jan 1 1999
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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