First measurement of reactor neutrino oscillations at JUNO

by Sindhujha Kumaran (SLAC)

Tuesday Feb 17, 2026, 12:30 PM → 1:30 PM America/Los_Angeles

48/2-224 - Madrone (SLAC)

The Jiangmen Underground Neutrino Observatory (JUNO) is a 20-kton liquid scintillator detector, by far the largest of its kind, with unprecedented energy resolution. Located ~700 m underground in southern China at a 53 km baseline from the Taishan and Yangjiang nuclear power plants, JUNO is uniquely positioned to simultaneously probe "solar" and "atmospheric" neutrino oscillation frequencies using reactor antineutrinos. The primary goals of the experiment are the determination of the Neutrino Mass Ordering and achieving sub-percent precision measurement on various neutrino oscillation parameters. Following the completion of detector filling in summer 2025, JUNO has already produced world-leading measurements of the solar oscillation parameters  (∆m²₂₁ and sin²θ₁₂) using just 59 days of data, improving our previous global knowledge of these parameters by a factor of 1.6! This seminar will present these first results, discuss their implications for the neutrino landscape, and review the initial performance of the detector.

 

zoom: https://stanford.zoom.us/j/98973156241?pwd=cEU5RFdlVXoyc0JTeTlDMkozKzQ5UT09