Search for the decays K+→π+νν̄ and K+→π+X0 for 150<MX0<250 MeV/c2

M. S. Atiya, I. H. Chiang, J. S. Frank, J. S. Haggerty, M. M. Ito, T. F. Kycia, K. K. Li, L. S. Littenberg, A. Sambamurti, A. Stevens, R. C. Strand, W. C. Louis, D. S. Akerib, D. R. Marlow, P. D. Meyers, M. A. Selen, F. C. Shoemaker, A. J.S. Smith, E. W. Blackmore, D. A. BrymanL. Felawka, P. Kitching, A. Konaka, Y. Kuno, J. A. Macdonald, T. Numao, P. Padley, J. M. Poutissou, R. Poutissou, J. Roy, R. Soluk, A. S. Turcot

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Abstract

A search for the decays K+→π+νν̄ and K+→π+X0, where X0 is any weakly interacting neutral particle or system of neutral particles with 150<MX0<250 MeV/c2, was performed in the pion kinematic region below the Kπ2 (K+→π+π0) peak. An upper limit on B(K+→π+νν̄) is set at 1.7 × 10-8 (90% C.L.) and B(K+→π+X0) is restricted to the 10-7 level or lower. Limits are also set for the production of K+→π+νν̄ through scalar or tensor interactions at 1.8 × 10-8 and 1.0 × 10-8 (90% C.L.), respectively.

Original languageEnglish (US)
Pages (from-to)R1-R4
JournalPhysical Review D
Volume48
Issue number1
DOIs
StatePublished - 1993

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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