Uncertainties in QE and RES events at LBNF due to hadronic production in FSI

TL;DR

This paper assesses systematic uncertainties in neutrino interactions at DUNE due to nuclear effects in argon and hydrogen targets, focusing on CCQE and CCRES processes using simulation comparisons.

Contribution

It provides a detailed simulation-based analysis of nuclear effects on neutrino oscillation measurements in argon and hydrogen targets at DUNE.

Findings

Quantified the ratio of oscillation probabilities P(Ar)/P(H) for CCRES channels.

Identified the energy dependence of systematic uncertainties.

Compared results from two different neutrino event generators.

Abstract

To achieve appropriate interaction rates in recent neutrino oscillation studies, high atomic number nuclear targets were utilized. Because of the nuclear effects in the experimental observable, the utilization of these complicated targets produced systematic uncertainties that needed to be assessed accurately to constrain the discovery. We made an effort to calculate the nuclear effects in the Ar and H targets, which are intended to be employed at the DUNE distant and near detectors, respectively, through our simulation effort. The DUNE flux is peaking around 2.5 GeV and CCRES is the dominant process at this energy. So, this work will be focused only on the CCQE and CCRES interactions and the simulations will be done using two different neutrino event generators. We reported the ratio of the oscillation probability (P(Ar)/P(H) as a function of reconstructed neutrino energy for CCRES channels to quantify the systematic errors in the observables.