On spin asymmetry in muon and tau decays

Authors :: Arbuzov, A. B.
Kopylova, T. V.
Sklyarov, I. K.
Source :: International Journal of Modern Physics A, Vol. 33 (2018) 1850191
Publication Year :: 2018
Abstract: The angular asymmetry in decays of polarized muons and tau leptons is discussed. Both the standard $V-A$ Fermi model and the general parameterization via Michel parameters are considered. Numerical importance of contributions suppressed by charged lepton mass ratio is underlined. Contribution of the second order QED correction is estimated in the leading logarithm approximation.<br />Comment: 8 pages, version to appear in IJMPA

Database :: arXiv
Journal :: International Journal of Modern Physics A, Vol. 33 (2018) 1850191
Publication Type :: Report
Accession number :: edsarx.1806.08090
Document Type :: Working Paper
Full Text :: https://doi.org/10.1142/S0217751X18501919