Measurement of the Structure Functions in Neutrino and Antineutrino Inelastic Interactions

Abstract

Measurements of the $x$ distributions from inclusive ${\nu }_{\mu }$ (${\overline{\nu }}_{\mu }$) reactions are interpreted in the quark-parton model to yield absolutely normalized momentum distributions of valence and sea quarks in the nucleon. The $x$ distributions exhibit a small but significant dependence on energy. From the $y$ distributions we also determine a value of $R=\left[\frac{\int 2x{F}_1\mathrm{}\left(x\right)\mathrm{dx}}{\int F_2\mathrm{}\left(x\right)\mathrm{dx}}\right]-1\mathrm{}$, averaged over the energy interval 20 to 220 GeV.