Further Search for the Decay $K^{+} \to π^{+} ν \bar{ν}$

24 April 2000

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 84 (17) , 3768-3770
https://doi.org/10.1103/physrevlett.84.3768

Abstract

A search for additional evidence for the rare kaon decay

K^{+} \to π^{+} ν \bar{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 < 229 MeV / c

. Including a reanalysis of the original data set, the backgrounds were estimated to contribute

0.08 \pm 0.02

events. Based on one observed event, the new branching ratio is

B (K^{+} \to π^{+} ν \bar{ν}) {= 1.5}_{- 1.2}^{+ 3.4} \times 10^{- 10}

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Version 1, 2000-02-05, ArXiv

This publication has 11 references indexed in Scilit:

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Further Search for the DecayK+→π+νν¯

Abstract

Keywords

All Related Versions

Further Search for the Decay $K^{+} \to π^{+} ν \bar{ν}$