Cabibbo-Kobayashi-Maskawa unitarity deficit reduction via finite nuclear size

M Gorchtein, V Katyal, B Ohayon +2

We revisit the extraction of the $|V_{ud}|$ CKM matrix element from the superallowed transition decay rate of ${}^{26m}$Al$\to$${}^{26}$Mg, focusing on finite nuclear size effe…