New Limit on T-violating Parameters in Kaon Decays

Marat Khabibullin, M. Abe, M. A. Aliev, V. V. Anisimovsky, M. Aoki, I. Arai, Y. Asano, T. Baker, M. Blecher, P. Depommier, M. P. Grigorjev, M. Hasinoff, K. Horie, H. C. Huang, Y. Igarashi, T. Ikeda, J. Imazato, A. P. Ivashkin, A. N. Khotjantsev, Y. G. KudenkoY. Kuno, L. S. Lee, A. S. Levchenko, G. Y. Lim, J. A. Macdonald, D. R. Marlow, C. R. Mindas, O. V. Mineev, C. Rangacharyulu, S. Shimizu, Y. M. Shin, A. Suzuki, A. Watanabe, N. V. Yershov, T. Yokoi

Research output: Contribution to journalConference articlepeer-review


A search for a T-violating transverse muon polarization (PT ) in K+ ? p0µ+? decay was carried out in the experiment E246 at the KEK-PS. The Standard model (SM) predicts vanishing value of the polarization (< 10-7), so an observation of non-zero PT at the current experimental sensitivity level would be a definite signature of new physics beyond SM. The preliminary result of the analysis of the 1996-1998 data is presented here: PT = (-3.3±3.7(stat)±0.9(syst))×10-3, which corresponds to the T-violation parameter Im(?) = (-0.9 ± 1.2(stat) ± 0.3(syst)) × 10-2. There is no evidence for T-violation in Kµ3 at the current level of sensitivity.

Original languageEnglish (US)
JournalProceedings of Science
StatePublished - 2001
Event2001 International Europhysics Conference on High Energy Physics, HEP 2001 - Budapest, Hungary
Duration: Jul 12 2001Jul 18 2001

All Science Journal Classification (ASJC) codes

  • General


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