Vus and ms from hadronic tau decays
Abstract
Recent experimental results on hadronic tau decays into strange particles by the OPAL collaboration are employed to determine Vus and ms from moments of the invariant mass distribution. Our results are Vus = 0.2208+-0.0034 and ms(2 GeV) = 81+-22 MeV. The error on Vus is dominated by experiment, and should be improvable in the future. Nevertheless, already now our result is competitive to the standard extraction of Vus from Ke3 decays, and it is compatible with unitarity.
0
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.