Transverse response functions in the $\Delta$-resonance region
  We calculate transverse response functions for quasi-elastic electron scattering at high momentum transfers in a relativistic Hartree approximation in configuration space. We treat the excitation of the $\Delta$ resonance using its free mass and width. Good agreement with experiment is found in the dip region. 
E. Rost, C. E. Price and J. R. Shepard (Department of Physics,   University of Colorado, Boulder)