The role of meson exchange currents in charged current (anti)neutrino-nucleus scattering

TL;DR

This paper investigates the impact of meson exchange currents on charged current neutrino-nucleus scattering in the GeV energy range, emphasizing the importance of two-nucleon knockout processes for interpreting experimental data.

Contribution

It introduces a fully relativistic model for meson exchange currents and demonstrates their significant role in neutrino-nucleus interactions relevant for oscillation experiments.

Findings

Two-nucleon knockout significantly affects cross section measurements.

The model aligns well with recent experimental data.

Meson exchange currents are crucial for accurate interpretation.

Abstract

We present our recent progress in the description of neutrino-nucleus interaction in the GeV region, of interest for ongoing and future oscillation experiments. In particular, we discuss the weak excitation of two-particle-two-hole states induced by meson exchange currents in a fully relativistic framework. We compare the results of our model with recent measurements of neutrino scattering cross sections, showing the crucial role played by two-nucleon knockout in the interpretation of the data.