Determination of the nucleon structure by means of the weak neutral current.

An experimental determination of the neutral-current structure functions of the nucleon is obtained by measuring the ratio of the neutral-current x distribution to the charged-current x distribution. The analysis is based on deep-inelastic neutrino-nucleon scattering data gathered in a massive fine-grained neutrino detector exposed to a narrow-band neutrino beam at Fermilab.