Phys. Rev. D 63, 032004 (2001) [5 pages]
Search for the decay K+→π+π0ν ν̅
S. Adler et al. (E787 Collaboration)
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S. Adler1, M. Aoki5 *, M. Ardebili4, M. S. Atiya1, P. C. Bergbusch5,7, E. W. Blackmore5, D. A. Bryman5,7, I-H. Chiang1, M. R. Convery4, M. V. Diwan1, J. S. Frank1, J. S. Haggerty1, T. Inagaki2, M. M. Ito4, S. Kabe2, S. H. Kettell1, Y. Kishi3, P. Kitching6, M. Kobayashi2, T. K. Komatsubara2, A. Konaka5, Y. Kuno2, M. Kuriki2, T. F. Kycia1 †, K. K. Li1, L. S. Littenberg1, J. A. Macdonald5, R. A. McPherson4, P. D. Meyers4, J. Mildenberger5, N. Muramatsu2, T. Nakano3, C. Ng1 ‡, T. Numao5, J.-M. Poutissou5, R. Poutissou5, G. Redlinger5 §, T. Sato2, T. Shinkawa2 **, F. C. Shoemaker4, R. Soluk6, J. R. Stone4, R. C. Strand1, S. Sugimoto2, C. Witzig1, and Y. Yoshimura2 (E787 Collaboration)
1Brookhaven National Laboratory, Upton, New York 11973
2High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801, Japan
3RCNP, Osaka University, 10–1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
4Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544
5TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3
6Centre for Subatomic Research, University of Alberta, Edmonton, Alberta, Canada T6G 2N5
7Department of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
Received 27 September 2000; published 8 January 2001
The first search for the decay K+→π+π0νν̅ has been performed with the E787 detector at BNL. Based on zero events observed in the kinematical search region defined by 90 MeV/c <Pπ+<188 MeV/c and 135 MeV<Eπ0<180 MeV, an upper limit B(K+→π+π0νν̅ )<4.3×10-5 at 90% confidence level is established.
©2001 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevD.63.032004
DOI: 10.1103/PhysRevD.63.032004
PACS: 13.20.Eb, 14.80.Mz
* Now at KEK.
† Deceased.
‡ Also at Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, NY 11794-3800.
§ Now at BNL.
** Now at the National Defense Academy of Japan, 1-10-20 Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan.
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