Measurement of K^+ \to ��^0 ��^+ ��decay using stopped kaons

Authors :: E470 Collaboration
Shimizu, S.
Horie, K.
Aliev, M. A.
Asano, Y.
Baker, T.
Depommier, P.
Hasinoff, M.
Igarashi, Y.
Imazato, J.
Ivashkin, A. P.
Khabibullin, M. M.
Khotjantsev, A. N.
Kudenko, Y. G.
Levchenko, A. S.
Lim, G. Y.
Macdonald, J. A.
Mineev, O. V.
Rangacharyulu, C.
Sawada, S.
Publication Year :: 2005
Publisher :: arXiv, 2005.
Abstract: The K^+ \to ��^0 ��^+ ��($K_{��3 ��}$) decay has been measured with stopped positive kaons at the KEK 12 GeV proton synchrotron. A $K_{��3 ��}$ sample containing 125 events was obtained. The partial branching ratio $Br(K_{��3 ��}, E_��>30 {\rm MeV}, ��_{��^+ ��}>20^{\circ})$ was found to be $[2.4 \pm 0.5(stat) \pm 0.6(syst)]\times 10^{-5}$, which is in good agreement with theoretical predictions.<br />12 pages, 3 figures, to be published in Physics Letters B