Long-baseline neutrino oscillation physics potential of the DUNE experiment

TL;DR

The DUNE experiment is projected to significantly advance neutrino physics by precisely determining neutrino mass ordering, observing charge-parity violation, and measuring oscillation parameters with high sensitivity over a 15-year period.

Contribution

This paper provides a comprehensive sensitivity analysis of DUNE's capabilities in long-baseline neutrino oscillation measurements using detailed simulations and uncertainty modeling.

Findings

DUNE can resolve neutrino mass ordering at 5σ after 2 years.

It can observe CP violation at 3σ (5σ) after 5 (10) years for half of δ_CP values.

DUNE's measurements of oscillation parameters will be comparable to current reactor experiments after 15 years.

Abstract

The sensitivity of the Deep Underground Neutrino Experiment (DUNE) to neutrino oscillation is determined, based on a full simulation, reconstruction, and event selection of the far detector and a full simulation and parameterized analysis of the near detector. Detailed uncertainties due to the flux prediction, neutrino interaction model, and detector effects are included. DUNE will resolve the neutrino mass ordering to a precision of 5$\sigma$, for all $\delta_{\mathrm{CP}}$ values, after 2 years of running with the nominal detector design and beam configuration. It has the potential to observe charge-parity violation in the neutrino sector to a precision of 3$\sigma$ (5$\sigma$) after an exposure of 5 (10) years, for 50\% of all $\delta_{\mathrm{CP}}$ values. It will also make precise measurements of other parameters governing long-baseline neutrino oscillation, and after an exposure of 15 years will achieve a similar sensitivity to $\sin^{2} 2\theta_{13}$ to current reactor experiments.