Inclusive electron scattering off 4He

Inclusive electron scattering off He-4 is investigated for low and medium energy and momentum transfers. The final state interaction, given by the simple semirealistic Malfliet-Tjon potential, is treated rigorously applying the Lorentz integral transform (LIT) method. In addition to the nonrelativistic one-body current a consistent meson exchange current is constructed and implemented. Results are presented for both longitudinal and transverse response functions at various momentum transfers. Good agreement with experimental data is found for the longitudinal response function, whereas some strength is missing in the transverse response function on the low energy side of the quasi-elastic peak.