The NOvA 3-Flavor Neutrino Oscillation Analysis

by Alejandro Yankelevich (University of Toyama)

Friday 17 Apr 2026, 16:30 → 18:00 Asia/Tokyo

A239 (School of Science)

NOvA is a long baseline neutrino oscillation experiment with a near and a far detector that uses Fermilab's NuMI beam in Illinois. The two detectors are functionally identical, consisting of plastic extrusion cells filled with oil-based liquid scintillator. The 14 kton far detector in Minnesota 810 km from the graphite target is used to observe neutrino oscillations through the \nu_e appearance and \nu_\mu disappearance channels. As fine-grained tracking calorimeters, the NOvA detectors are ideal for applying machine learning and computer vision techniques for event reconstruction. Several such methods are currently in use including convolutional neural networks and transformers for event/particle classification and regression of kinematic quantities. The most recent 2024 oscillation analysis with 10 years of data features both a frequentist and Bayesian analysis framework to measure the fundamental neutrino oscillation parameters. This seminar will present an overview of the NOvA oscillation analysis from detector design and event reconstruction to final analysis methods.