Recent results from NOvA

TL;DR

This paper reports recent neutrino oscillation measurements from NOvA, providing updated parameters and insights into neutrino behavior using extensive data from long-baseline experiments.

Contribution

It presents the latest 3-flavor neutrino oscillation results from NOvA, including new best-fit values for key parameters based on a large dataset.

Findings

Best-fit atmospheric parameters: Δm²₃₂ = (2.41±0.07)×10⁻³ eV²

Measured δ_CP consistent with previous hints of CP violation

Data disfavor large asymmetries between ν_e and ν̄_e appearance

Abstract

We present the most recent 3-flavor neutrino oscillation results from the NOvA long-baseline experiment, using a joint fit of $\nu_\mu \to \nu_\mu$, $\bar{\nu}_{\mu} \to \bar{\nu}_{\mu}$, $\nu_\mu \to \nu_{e}$, and $\bar{\nu}_{\mu}\to \bar{\nu}_{e}$ channels, and an accumulated exposure of $13.6 \times 10^{20}$ protons-on-target of neutrino beam and $12.5 \times 10^{20}$ protons-on-target of antineutrino beam. The best-fit values for the atmospheric parameters are $\Delta m^2_{32} = (2.41\pm0.07)\times 10^{-3}$ eV$^2$, $\sin^2\theta_{23} = 0.57^{+0.03}_{-0.04}$ and $\delta_{CP} = (0.82^{+0.27}_{-0.87}) \pi$. The data disfavor combinations of oscillation parameters that lead to large asymmetries between the rates of $\nu_{e}$ vs $\bar{\nu}_{e}$ appearance.