Overview
- A Fermilab-led collaboration combining NOvA and Japan’s T2K data reports suggestive differences in how neutrinos and antineutrinos oscillate.
- The effect could correspond to an increase in the matter-to-antimatter ratio of about one part per billion, according to the teams’ analysis.
- Findings appear in a joint Nature report and are characterized as preliminary, with confirmation requiring larger datasets.
- The measurements compare signals at near and far detectors, including NOvA’s 14,000-ton instrument in Ash River, Minnesota, located 503 miles from Fermilab.
- Researchers highlight challenging backgrounds, roughly one detected accelerator neutrino per day, and unresolved neutrino mass ordering as key limitations.