Test of time reversal invariance in the decay K+ -> pi(0)mu(+)nu

Authors
Abe, M Aoki, M Arai, I Asano, Y Baker, T Blecher, M Chapman, MD Dementyev, DV Depommier, P Grigoriev, MP Gumplinger, P Hasinoff, M Henderson, R Horie, K Hou, WS Huang, HC Igarashi, Y Ikeda, T Imazato, J Ivashkin, AP Kang, JH Keil, W Khabibullin, MM Khotyantsev, AN Kudenko, YG Kuno, Y Lee, JM Lee, KS Lim, GY Macdonald, JA Marlow, DR Mindas, CR Mineev, OV Rangacharyulu, C Sahu, SK Sekikawa, S Shibata, K Shimizu, HM Shimizu, S Shin, YM Shin, YH Sim, KS Suzuki, A Tashiro, T Watanabe, A Wright, D Yokoi, T
Citation
M. Abe et al., Test of time reversal invariance in the decay K+ -> pi(0)mu(+)nu, NUCL PHYS A, 663, 2000, pp. 919C-922C
Citations number
9
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
03759474 → ACNP
Volume
663
Year of publication
2000
Pages
919C - 922C
Database
ISI
SICI code
0375-9474(20000131)663:<919C:TOTRII>2.0.ZU;2-9
Abstract
The T violating parameter, i(xi), of the decay K+ --> pi(0)mu(+)upsilon, ha s been determined in KEK experiment E246 from a measurement of the transver se mu(+) polarization, PT. The experiment is the first to use stopped K+ wh ich allows a null test, formation of a double ratio for PT, and enhances th e 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, d ominates over the second which is due to systematics. Considerably more dat a taken in 1998 is under analysis and additional running time has been appr oved by KEK.