Eur. Phys. J. C 12, 627-631
DOI 10.1007/s100520000291

A kinematically complete measurement of decays

The KEK-PS E246 Collaboration

Y.-H. Shin¹ - M. Abe² - M. Aoki³ - I. Arai⁴ - Y. Asano² - T. Baker^3,5 - M. Blecher⁶ - M.D. Chapman³ - D. Dementyev⁷ - P. Depommier⁸ - M. Grigorjev⁷ - P. Gumplinger⁹ - M. Hasinoff¹⁰ - R. Henderson⁹ - K. Horie^4,16 - W.S. Hou¹¹ - H.C. Huang¹¹ - Y. Igarashi^3,4 - T. Ikeda^4,17 - A. Ivashkin⁷ - J. Imazato³ - J-M. Lee¹ - K.S. Lee¹² - G.Y. Lim³ - J.H. Kang¹ - W. Keil⁹ - M. Khabibullin⁷ - A. Khotjantsev⁷ - Y. Kudenko⁷ - Y. Kuno³ - J.A. Macdonald⁹ - C.R. Mindas¹³ - O. Mineev⁷ - C. Rangacharyulu⁵ - S.K. Sahu¹¹ - S. Sekikawa⁴ - H.M. Shimizu^3,17 - S. Shimizu^14,16 - K. Shibata⁴ - Y.M. Shin⁵ - K.S. Sim¹² - A. Suzuki⁴ - T. Tashiro⁴ - A. Watanabe⁴ - D. Wright⁹ - T. Yokoi¹⁵

¹Department of Physics, Yonsei University, Seoul 120-749, Korea
² Institute of Applied Physics, University of Tsukuba, Ibaraki 305-0006, Japan
³ IPNS, High Energy Accelerator Research Organization (KEK), Ibaraki 305-0801, Japan
⁴ Institute of Physics, University of Tsukuba, Ibaraki 305-0006, Japan
⁵ Department of Physics, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada
⁶ Department of Physics, Virginia Polytechnic Institute and State University, VA 24061-0435, USA
⁷ Institute for Nuclear Research, Russian Academy of Sciences, Moscow 117312, Russia
⁸ Laboratoire de Physique Nucleaire, University de Montreal, Montreal H3C 3J7, Canada
⁹ TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
¹⁰ Department of Physics and Astronomy, University of British Columbia, Vancouver V6T 1Z1, Canada
¹¹ Department of Physics, National Taiwan University, Taipei 106, Taiwan
¹² Department of Physics, Korea University, Seoul 136-701, Korea
¹³ Department of Physics, Princeton University, NJ 08544, USA
¹⁴ Department of Applied Physics, Tokyo Institute for Technology, Tokyo 152-0033, Japan
¹⁵ Department of Physics, University of Tokyo, Tokyo 113-0033, Japan
¹⁶ Department of Physics, Osaka university, Osaka 560-0043, Japan
¹⁷ RIKEN, 2-1, Hirosawa, Wako, Saitama, 351-0198, Japan

Received: 16 October 1999 / Published online: 27 January 2000 - © Springer-Verlag 2000 2000

Abstract
In a kinematically complete setting, the decays of stopped K⁺ were measured. In the frame work of the Weinberg polynomial expansion, the coefficients up to quadratic terms were deduced. The results are in good agreement with previous measurements and consistent with CP conservation expectations. The empirical rule is violated.

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Copyright Springer-Verlag 2000