Inclusive electron scattering is measured with 4.045 GeV incident beam energy from C, Fe, and Au targets. The measured energy transfers and angles correspond to a kinematic range for Bjorken $x>\mathrm{}1\mathrm{}$ and momentum transfers from $Q^2=1\mathrm{}–7(\mathrm{GeV}/c{)}^2$. When analyzed in terms of the $y$-scaling function the data show for the first time an approach to scaling for values of the initial nucleon momenta significantly greater than the nuclear matter Fermi momentum (i.e., $>0.3\mathrm{}\mathrm{GeV}/c$).

• Received 13 November 1998

DOI:https://doi.org/10.1103/PhysRevLett.82.2056