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, Daniel Robert Marlow, Peter Daniel 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)
JournalPhysical Review D
Volume48
Issue number1
DOIs
StatePublished - Jan 1 1993

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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    Atiya, M. S., Chiang, I. H., Frank, J. S., Haggerty, J. S., Ito, M. M., Kycia, T. F., Li, K. K., Littenberg, L. S., Sambamurti, A., Stevens, A., Strand, R. C., Louis, W. C., Akerib, D. S., Marlow, D. R., Meyers, P. D., Selen, M. A., Shoemaker, F. C., Smith, A. J. S., Blackmore, E. W., ... Turcot, A. S. (1993). Search for the decays K+→π+νν̄ and K+→π+X0 for 150<MX0<250 MeV/c2. Physical Review D, 48(1). https://doi.org/10.1103/PhysRevD.48.R1