# Nuclear Effects and CP Sensitivity at DUNE

## TL;DR

This paper investigates how nuclear effects, specifically final state interactions, impact the measurement of the CP-violating phase in neutrino oscillations at DUNE, aiming to improve energy reconstruction accuracy.

## Contribution

It quantifies the influence of nuclear effects on CP phase determination at DUNE, addressing systematic uncertainties in neutrino energy reconstruction.

## Key findings

- Nuclear effects significantly affect CP phase sensitivity.
- Final state interactions alter neutrino energy reconstruction.
- Results highlight the importance of modeling nuclear effects accurately.

## Abstract

The precise measurement of neutrino oscillation parameters is one of the highest priorities in neutrino oscillation physics. To achieve the desired precision, it is necessary to reduce the systematic uncertainties related to neutrino energy reconstruction. An error in energy reconstruction is propagated to all the oscillation parameters, hence a careful estimation of neutrino energy is required. To increase the statistics, neutrino oscillation experiments use heavy nuclear targets like Argon(Z=18). The use of these nuclear targets introduces nuclear effects that severely impact the neutrino energy reconstruction which in turn poses influence in the determination of neutrino oscillation parameters. In this work, we have tried to quantify nuclear effects on the determination of CP phase at DUNE using final state interactions.