Test of time reversal invariance in the decay K+ → π0μ+ν

pi(0)mu(+)upsilon, has been determined in KEK experiment E246 from a measurement of the transverse mu(+) polarization, PT. The experiment is the first to use stopped K+ which allows a null test, formation of a double ratio for PT, and enhances the ratio i(xi)/P-T. The results from the 1996-1997 data are: i(xi) = -0.013 +/- 0.016 +/- 0.003 similar to 3P(T). The first error, due to statistics, dominates over the second which is due to systematics. Considerably more data taken in 1998 is under analysis and additional running time has been approved by KEK. -->
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(99)00797-6
Přístupová URL adresa: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::669a9ea75160971a44e2e8ad071fa4b9
https://doi.org/10.1016/s0375-9474(99)00797-6
Rights: OPEN
Přírůstkové číslo: edsair.doi.dedup.....669a9ea75160971a44e2e8ad071fa4b9
Autor: R. Henderson, K. S. Lee, M. D. Hasinoff, K. Horie, D. H. Wright, J. M. Lee, Y. Asano, G. Y. Lim, M. Abe, S. Sekikawa, S. K. Sahu, A. Suzuki, M. D. Chapman, Y. H. Shin, S. Shimizu, K. S. Sim, Tokihiro Ikeda, W. Keil, Masato Aoki, T. Baker, A. Khotyantsev, Takeichiro Yokoi, W. S. Hou, P. Gumplinger, Kiyou Shibata, J. H. Kang, I. Arai, M. P. Grigoriev, D. V. Dementyev, Yu. Kudenko, Y.M. Shin, C. R. Mindas, P. Depommier, Chary Rangacharyulu, J. Imazato, O. V. Mineev, M. M. Khabibullin, T. Tashiro, H. C. Huang, A. P. Ivashkin, J. A. Macdonald, M. Blecher, Yoshitaka Kuno, A. Watanabe, Hirohiko M. Shimizu, Y. Igarashi, Daniel Robert Marlow
Rok vydání: 2000
Předmět:
Zdroj: Nuclear Physics A. :919c-922c
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(99)00797-6
Popis: The T violating parameter, i(xi), of the decay K+ --> pi(0)mu(+)upsilon, has been determined in KEK experiment E246 from a measurement of the transverse mu(+) polarization, PT. The experiment is the first to use stopped K+ which allows a null test, formation of a double ratio for PT, and enhances the ratio i(xi)/P-T. The results from the 1996-1997 data are: i(xi) = -0.013 +/- 0.016 +/- 0.003 similar to 3P(T). The first error, due to statistics, dominates over the second which is due to systematics. Considerably more data taken in 1998 is under analysis and additional running time has been approved by KEK.
Databáze: OpenAIRE
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