Further search for the decay K+→π+ν¯ν

E787 Collaboration

Research output: Contribution to journalArticle

101 Citations (Scopus)


A search for additional evidence for the rare kaon decay K+→π+ν¯ν has been made with a new data set comparable in sensitivity to the previous exposure that produced a single event. No new events were found in the pion momentum region examined, 211<P<229MeV/c. Including a reanalysis of the original data set, the backgrounds were estimated to contribute 0.08±0.02 events. Based on one observed event, the new branching ratio is B(K+→π+ν¯ν)=1.5+3.4 −1.2×10−10.

Original languageEnglish
Pages (from-to)3768-3770
Number of pages3
JournalPhysical Review Letters
Issue number17
Publication statusPublished - 2000 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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