Normalized small-y cross sections for neutrinos and antineutrinos at high energy

We present results on flux-normalized neutrino and antineutrino cross sections near y = 0 from data obtained in the Fermilab narrow-band beam. We conclude that they are consistent with rising linearly with energy over the range 45 < or = E/sub ..nu../GeV. The separate averages of ..nu.. and nu-bar each measured to 4%, are equal to well within the errors. The best fit for the combined data gives sigma/sub 0//E = (0.719 +- 0.035) x 10/sup -38/ cm/sup 2//GeV at an average E/sub ..nu../of 100 GeV.