Relativistic Descriptions of Final-State Interactions in Charged-Current Neutrino-Nucleus Scattering at ArgoNeuT Kinematics

The analysis of the recent charged-current neutrino-nucleus scattering cross sections measured by the
ArgoNeuT Collaboration requires relativistic theoretical descriptions also accounting for the role of
final-state interactions. In this work, we evaluate differential neutrino-nucleus cross sections with
the relativistic Green’s function model, where final-state interactions are described in the inclusive
scattering consistently with the exclusive scattering using a complex optical potential. The sensitivity
to the parametrization adopted for the phenomenological optical potential is discussed. The predictions
of the relativistic Green’s function model are compared with the results of different descriptions of final-state
interactions.