Relativistic models for quasielastic $(e,e')$\ at large momentum   transfers
  Inclusive quasielastic response functions are calculated for electron scattering in a relativistic model including momentum dependent scalar and vector mean fields. The momentum dependence of the mean fields is taken from Dirac optical fits to proton nucleus scattering and is important in describing data at momentum transfers of 1 GeV/c or larger. Our simple model is applicable for quasielastic scattering over a large range of momentum transfers. 
Hungchong Kim, C. J. Horowitz and M. R. Frank