Relativistic descriptions of final-state interactions in charged-current neutrino-nucleus scattering at ArgoNeuT kinematics

TL;DR

This paper evaluates relativistic models for neutrino-nucleus scattering at ArgoNeuT energies, emphasizing the importance of final-state interactions and comparing different optical potential parameterizations.

Contribution

It introduces a relativistic Green's function approach that consistently describes inclusive and exclusive scattering with complex optical potentials.

Findings

Relativistic Green's function model effectively describes neutrino-nucleus scattering.

Sensitivity of results to optical potential parameterizations is analyzed.

Model predictions are compared with other descriptions of final-state interactions.

Abstract

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 parameterization 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.