A separation of the longitudinal and transverse ${}^{12}\mathrm{C}{(e,e}^{\prime }p)$ cross sections in the quasifree region has been performed in parallel kinematics at $Q^2$ of 0.64 and 1.8 ${\mathrm{GeV}}^2$ for initial proton momentum $<80\mathrm{}$ MeV. The separated transverse and longitudinal spectral functions at $Q^2=0.64\mathrm{}{\mathrm{GeV}}^2$ show significant differences for missing energy between 25 and 60 MeV indicating a breakdown in the single nucleon knockout picture. The transverse spectral functions exhibit definite momentum transfer dependence.

• Received 29 November 1999

DOI:https://doi.org/10.1103/PhysRevC.61.061602