Latest Constraints on Mixing Parameters in Three-Flavor Neutrino Oscillations from NOvA

NOvA is a long-baseline neutrino oscillation experiment that is designed to probe the neutrino mass hierarchy and mixing structure. It uses two functionally identical liquid scintillator detectors 14mrad off-axis from the NuMI beamline at Fermilab, allowing a tightly focused neutrino flux peaked at around 2 GeV. The Near Detector is located 100 m underground and is used to characterize the neutrino beam before oscillations. The Far Detector is placed at a distance of $810$ km from the beam source and is used to look for neutrino oscillations, primarily in the $\nu_{\mu}$ $\rightarrow$ $\nu_{\mu}$ and the $\nu_{\mu}$ $\rightarrow$ $\nu_{e}$ channels. In this talk, I will present an overview of the latest $\nu_{e}$ appearance analysis and the results from the joint fit to the $\nu_{\mu}$-disappearance and $\nu_{e}$-appearance analyses, utilizing an accumulated exposure of $8.85\times10^{20}$ protons-on-target. A number of improvements to the simulation, including detector and flux modelling have been incorporated and will also be briefly described.