The SuSAv2 model for inelastic neutrino-nucleus scattering

TL;DR

The paper extends the SuSAv2 model to inelastic neutrino-nucleus scattering, incorporating resonance and deep inelastic reactions, and validates it against electron and neutrino scattering data across various nuclei and experiments.

Contribution

It introduces an extension of the SuSAv2 model to the full inelastic regime for neutrino-nucleus interactions, combining phenomenological structure functions with nuclear scaling functions.

Findings

Model successfully describes ($e,e'$) data for multiple nuclei.

Extended model provides accurate neutrino cross-section predictions.

Comparison of two $ ext{Δ}$ resonance region descriptions enhances understanding.

Abstract

The susperscaling model SuSAv2, already available for charged-current neutrino-nucleus cross sections in the quasielastic region, is extended to the full inelastic regime. In the model the resonance production and deep inelastic reactions are described through the extension to the neutrino sector of the SuSAv2 inelastic model developed for ($e,e'$) reactions, which combines phenomenological structure functions with a nuclear scaling function. This work also compares two different descriptions of the $\Delta$ resonance region, one based on a global scaling function for the full inelastic spectrum and the other on a semi-phenomenological $\Delta$ scaling function extracted from ($e,e'$) data for this specific region and updated with respect to previous work. The results of the model are tested against ($e,e'$) data on $^{12}$C, $^{16}$O, $^{40}$Ca and $^{40}$Ar and applied to the study of the charged current inclusive neutrino cross-section on $^{12}$C and $^{40}$Ar measured by the T2K, MicroBooNE, ArgoNEUT and MINERvA experiments, thus covering several kinematical regions.