We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Complete theory of radiative corrections to K<sub>ℓ3</sub> decays and the V<sub>us</sub> update.
- Authors
Seng, Chien-Yeah; Galviz, Daniel; Gorchtein, Mikhail; Meißner, Ulf-G.
- Abstract
We fill up the missing piece in our own re-analysis of the long-distance electromagnetic radiative corrections to semileptonic kaon decays by performing a rigorous study in the K → πμ+νμ(γ) channels. With appropriate experimental and lattice inputs, we achieve a precision level of 10−4 in these channels. This is comparable to our previous analysis in the K → πe+νe(γ) channels. With this new result, we present an updated global analysis to extract the Standard Model parameter |Vus| from semileptonic kaon decays. We obtain |Vus| = 0.22308(55) and 0.22356(73), using the lattice average of the K0→ π− transition form factor at Nf = 2 + 1 + 1 and Nf = 2 + 1, respectively.
- Subjects
RADIATIVE corrections; SEMILEPTONIC kaon decay
- Publication
Journal of High Energy Physics, 2022, Vol 2022, Issue 7, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP07(2022)071