Search for the Decay K+ -> pi+ pi0 nu nubar

E787: S. Adler , M. Aoki , M. Ardebili , M.S. Atiya , P.C. Bergbusch , E.W. Blackmore , D.A. Bryman , I-H. Chiang

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M.R. Convery M.V. Diwan J.S. Frank J.S. Haggerty T. Inagaki M.M. Ito S. Kabe S.H. Kettell Y. Kishi P. Kitching M. Kobayashi T.K. Komatsubara A. Konaka Y. Kuno M. Kuriki T. F. Kycia K.K. Li L.S. Littenberg J.A. Macdonald R.A. McPherson P.D. Meyers J. Mildenberger N. Muramatsu T. Nakano C. Ng T. Numao J.-M. Poutissou R. Poutissou G. Redlinger T. Sato T. Shinkawa F.C. Shoemaker R. Soluk J.R. Stone R.C. Strand S. Sugimoto C. Witzig Y. Yoshimura

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classification ✦ hep-ex

keywords nubarsearchdecaybeenconfidencedefineddetectore787

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The first search for the decay K^+ -> pi^+ pi^0 nu nubar has been performed with the E787 detector at BNL. Based on zero events observed in the kinematical search region defined by 90 MeV/c < P_{pi^+} < 188 MeV/c and 135 MeV < E_{pi^0} < 180 MeV, an upper limit B(K^+ -> pi^+ pi^0 nu nubar) < 4.3 x 10^{-5} at 90% confidence level is established.

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Search for the Decay K+ -> pi+ pi0 nu nubar

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