Evidence for the decay K+→π+vv¯

(E787 Collaboration)

Research output: Contribution to journalArticle

160 Scopus citations

Abstract

An event consistent with the signature expected for the rare kaon decay K+→π+vv¯ has been observed. In the pion momentum region examined, 211 < P < 230MeV/c, the backgrounds are estimated to contribute 0.08 ± 0.03 events. If the event is due to K+→π+vv¯, the branching ratio is 4.2+9.7−3.5 × 10−10.

Original languageEnglish (US)
Pages (from-to)2204-2207
Number of pages4
JournalPhysical review letters
Volume79
Issue number12
DOIs
StatePublished - Sep 22 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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