Over nearly nine years, the Daya Bay Reactor Neutrino Experiment captured 5.5 million interactions from subatomic particles. Now, the international Daya Bay collaboration has reported the most precise measurement yet for a key parameter for understanding how neutrinos change their “flavor.” https://newscenter.lbl.gov/2022/05/31/physicists-announce-first-results-from-daya-bays-final-dataset/