# Impact of Cross-Sectional Uncertainties on DUNE Sensitivity due to Nuclear Effects

## TL;DR

This paper investigates how nuclear effects and uncertainties in neutrino-nucleus interactions impact DUNE's sensitivity to key neutrino oscillation parameters, using two different event generators to assess systematic errors.

## Contribution

It provides a comparative analysis of DUNE's sensitivity to neutrino parameters considering nuclear uncertainties with GENIE and GiBUU generators.

## Key findings

- Nuclear effects significantly affect DUNE's sensitivity.
- Differences between GENIE and GiBUU impact CP violation detection.
- Systematic uncertainties alter the predicted oscillation parameter measurements.

## Abstract

In neutrino oscillation experiments precise measurement of neutrino oscillation parameters is of prime importance as well as a challenge. To improve the statistics, presently running and proposed experiments are using heavy nuclear targets. These targets introduce nuclear effects and the quantification of these effects on neutrino oscillation parameters will be decisive in the prediction of neutrino oscillation physics. Limited understanding of neutrino nucleus interactions and inaccurate reconstruction of neutrino energy causes uncertainty in the cross section. The error in the determination of cross section which contributes to systematic error introduces error in the neutrino mixing parameters that are determined by these experiments. In this work we focus on the variation in the predictions of DUNE potential, arising due to systematic uncertainties, using two different event generators-GENIE and GiBUU. These generators have different and independent cross-section models. To check the DUNE potential with the two generators as mentioned we have checked the senstivity studies of DUNE for CP violation, mass hierarchy and octant degeneracy.