Zooming in on neutrino oscillations with DUNE

TL;DR

This paper evaluates DUNE's potential to precisely measure neutrino mixing parameters and CP violation, considering current knowledge and various true values, highlighting its significant future contributions.

Contribution

The study provides a detailed analysis of DUNE's capability to probe neutrino mixing and CP violation, including precision measurements and testing theoretical models.

Findings

DUNE can significantly improve the precision of $ heta_{23}$ measurement.

DUNE has strong potential to test CP violation hypothesis.

Seven years of data will enable substantial progress in neutrino parameter determination.

Abstract

We examine the capabilities of the DUNE experiment as a probe of the neutrino mixing paradigm. Taking the current status of neutrino oscillations and the design specifications of DUNE, we determine the experiment's potential to probe the structure of neutrino mixing and CP violation. We focus on the poorly determined parameters $\theta_{23}$ and $\delta_{CP}$ and consider both two and seven years of run. We take various benchmarks as our true values, such as the current preferred values of $\theta_{23}$ and $\delta_{CP}$, as well as several theory-motivated choices. We determine quantitatively DUNE's potential to perform a precision measurement of $\theta_{23}$, as well as to test the CP violation hypothesis in a model-independent way. We find that, after running for seven years, DUNE will make a substantial step in the precise determination of these parameters, bringing to quantitative test the predictions of various theories of neutrino mixing.