Chiral extrapolation and finite-volume dependence of the hyperon vector couplings

Li-Sheng Geng, Kai-wen Li, J. Martin Camalich

The hyperon vector form factors at zero momentum transfer, $f_1(0)$, play an important role in a precise determination of the Cabibbo-Kobayashi-Maskawa matrix element $V_{us}$. Rec…