Three-nucleon forces effects in the electron scattering off ⁴He

We report on our study of the inclusive electron scattering off ⁴He, where emphasis on the role of three-nucleon forces is given. A detailed analysis of the longitudinal response function R_L(ω, q) is done at different kinematics and theoretical results are compared to available experimental data. Calculation are performed with ab-initio techniques where the full four-body continuum dynamics is considered via the Lorentz integral transform method. At lower momentum transfer (q ≤ 200 MeV/c) three-nucleon forces play an important role and the two three-nucleon force models implemented show differences up to 10%.