Quasielastic Electron-Nucleus Scattering and the Correlated Fermi Gas Model

The study of neutrino-nucleus scattering processes is important for the successful execution of the entire new generation of neutrino experiments like DUNE and T2K. Quasielastic neutrino-nucleus scattering, which yields a final state consisting of a nucleon and charged lepton, makes up a large part of the total neutrino cross-section in neutrino experiments. A significant source of uncertainty in the cross-section comes from limitations in our knowledge of nuclear effects in the scattering process. To this end, electron-nucleus scattering experiments play an important role in providing vital information to test and validate different nuclear models intended to be used in neutrino experiments. We present a cross-section calculation for the lepton (electron and neutrino) nucleus quasielastic scattering process using the Correlated Fermi Gas nuclear model characterized by a depleted Fermi gas region and a correlated high-momentum tail. This is carried out by identifying various transitions available for the nucleon inside the nucleus and thereby calculating the corresponding phase-space integrals for the nuclear structure tensor. We discuss the comparison between cross-sections from this model with the available experimental data and the widely used Relativistic Fermi Gas (RFG) nuclear model.