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Abstract We present a coupled-cluster calculation for the electron- ⁴ 4 He scattering in the region of the quasi-elastic peak. We show the longitudinal and transverse responses separately, and discuss results within two distinct theoretical methods: the Lorentz integral transform and spectral functions. The comparison between them allows to investigate the role of final state interactions, two-body currents and relativistic effects.
J. E. Sobczyk (Thu,) studied this question.