@article{b9089bbde8d14020bc36e86483c541e6,
title = "Search for the decays K+→π+ν{\=ν} and K+→π+X0 for 150<MX0<250 MeV/c2",
abstract = "A search for the decays K+→π+ν{\=ν} 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+ν{\=ν}) 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+ν{\=ν} through scalar or tensor interactions at 1.8 × 10-8 and 1.0 × 10-8 (90% C.L.), respectively.",
author = "Atiya, {M. S.} and Chiang, {I. H.} and Frank, {J. S.} and Haggerty, {J. S.} and Ito, {M. M.} and Kycia, {T. F.} and Li, {K. K.} and Littenberg, {L. S.} and A. Sambamurti and A. Stevens and Strand, {R. C.} and Louis, {W. C.} and Akerib, {D. S.} and Marlow, {D. R.} and Meyers, {P. D.} and Selen, {M. A.} and Shoemaker, {F. C.} and Smith, {A. J.S.} and Blackmore, {E. W.} and Bryman, {D. A.} and L. Felawka and P. Kitching and A. Konaka and Y. Kuno and Macdonald, {J. A.} and T. Numao and P. Padley and Poutissou, {J. M.} and R. Poutissou and J. Roy and R. Soluk and Turcot, {A. S.}",
year = "1993",
doi = "10.1103/PhysRevD.48.R1",
language = "English (US)",
volume = "48",
pages = "R1--R4",
journal = "Physical Review D",
issn = "0556-2821",
publisher = "American Physical Society",
number = "1",
}