NOvA Experiment

Check out this new article on phys.org about NOvA and our latest three-flavour oscillation results, featuring our spokespeople, Tricia Vahle and Alex Himmel 👀 phys.org/news/2026-02-n… 📸 Fermilab Creative Services

This work will improve our ability to understand the neutrons produced in neutrino interactions, improving our future analyses.

This event display shows the generator position (red ×) and neutron interactions (colored boxes) lighting up the detector. The team shielded our electronics with steel, polyethylene, and water; captured some amazing data!

Big week for NOvA! We ran a special generator at our Near Detector, flooding it with billions of neutrons. Neutrons are notoriously hard to detect, so this dedicated run will help us better understand how they interact with our detector. 📸 Taylor Contreras

Read the publication in PRD here: journals.aps.org/prd/abstract/1…

... providing a unified explanation for multiple-muon seasonal behavior across experiments. The result of this study makes it possible for the first time to understand the seasonal variation of observed multiple muon events for a detector of any size and depth.

Using four years of data from the NOvA Near Detector, this paper presents a detailed study of the seasonal variation of cosmic-ray–induced multiple-muon events.

See the article in PRL here: journals.aps.org/prl/abstract/1…

This accuracy enables a novel way to probe which neutrino is the lightest, the "mass ordering", by comparing NOvA’s results with those from reactor-based neutrino experiments. Using this method, NOvA data show an 87% preference for the normal ordering over the inverted ordering.

We have a new article out in PRL describing our most recent three-flavor oscillation analysis with 10 years of NOvA data.

@UWMadison @UWMadPhysics @Fermilab We're super excited for next year. See you all in 2026!

@UWMadison @UWMadPhysics @Fermilab We also had a record-breaking number of successful PhD defenses this year - 13 in total! Congratulations, Doctors! 🎉

It's the end of the 2025, which means it is time for us to look back on the year in NOvA's Year In Review!