V−AElastic Scattering of Electrons by Fission Antineutrinos

The energy spectrum of electron antineutrinos from ${}_{}{}^{235}{}_{}{}^{}\mathrm{U}$ fission products in secular equilibrium has been recalculated. Assuming the validity of $V-A$ theory, cross sections for the elastic scattering reaction ${\overline{\nu }}_e+e^{-}\to {\overline{\nu }}_e+e^{-}$, integrated over recoil electron energy for this antineutrino spectrum, are given for several values of minimum electron energy from 1 to 5.5 MeV. Theoretical error bars, which reflect the uncertainties in the input data, are given for the antineutrino spectrum and the cross sections.