Relativistic descriptions of final-state interactions in charged-current quasielastic antineutrino-nucleus scattering at MiniBooNE kinematics

TL;DR

This paper evaluates relativistic models for final-state interactions in charged-current quasielastic antineutrino-nucleus scattering at MiniBooNE energies, emphasizing the importance of consistent treatment of inclusive and exclusive processes.

Contribution

It introduces a relativistic Green's function approach that consistently describes final-state interactions in both inclusive and exclusive scattering, analyzing the impact of optical potential parameterizations.

Findings

Relativistic Green's function model provides accurate cross section predictions.

Sensitivity to optical potential parameterization affects the results.

Comparison shows the model's consistency with other descriptions.

Abstract

The analysis of the recent charged-current neutrino-nucleus scattering cross sections measured by the MiniBooNE Collaboration requires relativistic theoretical descriptions also accounting for the role of final-state interactions. In this work, we evaluate differential antineutrino-nucleus cross sections with the relativistic Green's function model, where the 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.