Orateur
Description
NOvA represents the second generation of accelerator-based long-baseline neutrino experiments conducted at Fermilab. Utilizing the megawatt-capable NuMI beam, neutrinos or antineutrinos are produced to study oscillation phenomena across an 810 km baseline. Two functionally identical and finely segmented tracking detectors filled with liquid scintillator have been collecting data for the past decade, equivalent to $26.6\times10^{20}$ protons-on-target (POT) with the neutrino beam and $12.5\times10^{20}$ POT with the antineutrino beam. The 3-flavor oscillation analyses combine $\nu_\mu(\bar{\nu}_\mu)$ disappearance and $\nu_e(\bar{\nu}_e)$ appearance channels to provide measurements of mixing angles $\theta_{23}$ and $\theta_{13}$, mass splitting $\Delta m^{2}_{32}$, neutrino mass ordering, and charge-parity symmetry violation in the lepton sector. Since the previous data release, both frequentist and Bayesian approaches have been implemented, with consistent outcomes. This talk will present key results, including the world-leading precision on $\Delta m^{2}_{32}$ (1.5%) achieved in a single experiment, and the first application of the two-dimensional constraint on a parameters pair ($\theta_{13}, \Delta m^{2}_{32}$) from Daya Bay increased the sensitivity to neutrino mass ordering.
