Measurements of Neutrino and Antineutrino Cross Sections at High Energies

Abstract

The dependence of the neutrino total cross section ${\ensuremath{\sigma}}_{\ensuremath{\nu}}$ on neutrino energy has been measured up to 160 GeV. The data are consistent with a linear dependence with slope (0.58 \ifmmode\pm\else\textpm\fi{} 0.25) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}38}$ ${\mathrm{cm}}^{2}$/GeV. The ratio of the antineutrino to the neutrino total cross section $\frac{{\ensuremath{\sigma}}_{\overline{\ensuremath{\nu}}}}{{\ensuremath{\sigma}}_{\ensuremath{\nu}}}$ 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-\textonehalf{} fermions.