The weak coupling constants of the electron, $g_V^e$ and $g_A^e$, are determined from measurements of the total and differential cross sections for the reaction ${\nu }_{\mu }$e→${\nu }_{\mu }$e. The data also place limits of interest on the magnitudes of a neutrino charge radius and a possible neutrino magnetic dipole moment.

• Received 6 November 1986

DOI:https://doi.org/10.1103/PhysRevLett.58.636