MicroBooNE Experiment Debunks Sterile Neutrino Theory, Reshaping Search for New Physics
Scientists at Fermilab's MicroBooNE experiment have definitively ruled out the existence of the sterile neutrino, a hypothetical particle once considered a leading explanation for puzzling neutrino behavior, thereby challenging a decades-old theory in particle physics. This groundbreaking finding, announced on December 3, 2025, now redirects researchers to explore other avenues in their quest to understand physics beyond the Standard Model.