# Identification of nuclear effects in neutrino and antineutrino interactions on nuclei using generalized final-state correlations

## TL;DR

This paper introduces a method using generalized final-state correlations to identify nuclear effects in neutrino and antineutrino interactions, aiding in understanding backgrounds for neutrino oscillation experiments.

## Contribution

It generalizes previous approaches to include antineutrino quasielastic and pion production interactions, providing a new tool for nuclear effect analysis.

## Key findings

- Enhanced sensitivity to nuclear effects in neutrino and antineutrino interactions.
- Potential to distinguish nuclear responses between neutrinos and antineutrinos.
- Provides constraints that help differentiate nuclear effects from CP violation signals.

## Abstract

In the study of neutrino and antineutrino interactions in the GeV regime, kinematic imbalances of the final-state particles have sensitivities to different nuclear effects. Previous ideas based on neutrino quasielastic interactions [Phys. Rev. C94, 015503 (2016), Phys. Rev. C95, 065501 (2017)] are now generalized to antineutrino quasielastic interactions, as well as neutrino and antineutrino pion productions. Measurements of these generalized final-state correlations could provide unique and direct constraints on the nuclear response inherently different for neutrinos and antineutrinos, and therefore delineate effects that could mimic charge-parity violation in neutrino oscillations.