New limit on the T-violating transverse muon polarization in K+-->pi0mu+nu decays.
/ Authors
M. Abe, M. Aliev, V. Anisimovsky, M. Aoki, Y. Asano, T. Baker, M. Blecher, P. Depommier, M. Hasinoff, K. Horie
and 20 more authors
Y. Igarashi, J. Imazato, A. Ivashkin, M. Khabibullin, A. Khotjantsev, Y. Kudenko, Y. Kuno, K. Lee, A. Levchenko, G. Lim, J. Macdonald, O. Mineev, N. Okorokova, C. Rangacharyulu, S. Shimizu, Y. H. Shin, Y. M. Shin, K. Sim, N. Yershov, T. Yokoi
/ Abstract
A search for T-violating transverse muon polarization (P(T)) in the K+-->pi(0)mu(+)nu decay was performed using kaon decays at rest. A new improved value P(T)=-0.0017+/-0.0023(stat)+/-0.0011(syst) was obtained giving an upper limit |P(T)|<0.0050. The T-violation parameter was determined to be Imxi=-0.0053+/-0.0071(stat)+/-0.0036(syst) giving an upper limit |Imxi|<0.016.
Journal: Physical Review Letters