Phys. Rev. Lett. 84, 3768–3770 (2000)Further Search for the Decay K+→π+νν̅Received 4 February 2000; published in the issue dated 24 April 2000 A search for additional evidence for the rare kaon decay K+→π+νν̅ 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+νν̅ ) = 1.5-1.2+3.4×10-10. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.84.3768
DOI:
10.1103/PhysRevLett.84.3768
PACS:
13.20.Eb, 12.15.Hh, 14.80.Mz
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