Implications of Recent Data onΣ−→ne−νfor the Cabibbo Model

Abstract

A recent measurement of the electron-neutrino angular correlation in ${\Sigma }^{-}\to \mathrm{ne}\nu$, taken by itself, is shown to be in remarkable agreement with the Cabibbo model. In contrast, the electron-spin asymmetry combines with it to distinctly favor the wrong sign for the axial-vector-to-vector form-factor ratio.