Measurements of Neutrino and Antineutrino Cross Sections at High Energies

The dependence of the neutrino total cross section ${\sigma }_{\nu }$ on neutrino energy has been measured up to 160 GeV. The data are consistent with a linear dependence with slope (0.58 ± 0.25) × ${10}^{-38\mathrm{}}$ ${\mathrm{cm}}^2$/GeV. The ratio of the antineutrino to the neutrino total cross section $\frac{{\sigma }_{\overline{\nu }}}{{\sigma }_{\nu }}$ has been found to be approximately constant up to 70 GeV at a value which is consistent with the numerical value of $\frac{1}{3}$ expected for the scattering of neutrinos and antineutrinos by relativistic pointlike spin-½ fermions.