Updated determinations of |V${}_{us}$| with tau decays using new recent estimates of radiative corrections for light-meson leptonic decay rates

Abstract

We update the |V${}_{us}$| determinations using the HFLAV 2018 report tau branching fraction results with recent new estimates of the $\pi \ell 2$ and $K\ell 2$ radiative corrections. There are minor changes of the central values and uncertainties.

Comments: v4; fixed 2nd eq. in p.2, (m_tau * c^2); reordered text to mention 3 revisions of radiative corrections in chronological order