JUNO’s first physics results

by Dr Iwan Morton-Blake (TDLI)

Friday 28 Nov 2025, 10:00 → 11:00 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N601 - Meeting Room (Tsung-Dao Lee Institute)

Abstract:

The Jiangmen Underground Neutrino Observatory (JUNO) is a new 20-kiloton liquid-scintillator detector located 700 m underground in South China. Designed to study some of the most fundamental open questions in neutrino physics, JUNO aims to have world-leading sensitivity to the neutrino mass ordering and make sub-percent precision measurements of oscillation parameters. These goals depend on precisely resolving the fine oscillation structure in the energy spectrum of antineutrinos from nuclear reactors ~52.5km away.

In this seminar, I will present JUNO’s first physics results, based on only ~60 days of data. Despite the short exposure, JUNO already achieves the world’s most precise measurements of two oscillation parameters Δm²₂₁ and θ₁₂, demonstrating the detector’s exceptional energy resolution, calibration performance, and background control. I will discuss how these early results validate JUNO’s design principles, what they reveal about neutrino oscillations, and how they pave the way toward a future determination of the neutrino mass ordering and a rich broader physics program.

Bio:

I am a neutrino experimentalist working on the JUNO and TRIDENT experiments, as a postdoctoral fellow at the Tsung-Dao Lee Institute, Shanghai since 2022. I previously worked on the SNO+ experiment during my PhD at the University of Oxford, United Kingdom. Previous to that, I completed my Bachelors in Trinity College Dublin, Ireland. 

Alternative online link: https://meeting.tencent.com/dm/BOjNqIxERRjn

ID: 313901257