Speaker
Dongha Lee
(KEK)
Description
The JSNS2 (J-PARC Sterile Neutrino Search at the J-PARC Spallation Neutron Source) experiment searches for neutrino oscillations over a baseline of 24 meters, targeting Δm² values near 1 eV². Our goal is to perform a direct test of the LSND anomaly.
We conducted long physics runs from 2021 to 2025, accumulating a total exposure of 5.1 × 10²² protons on target (POT) at J-PARC.
The data analysis of the 2022 physics run (0.8 × 10²² POT) has now matured, and the first results on the ν̄ₑ excess will be presented. The results will be compared with expectations from sterile neutrino oscillations as well as with a model-independent prediction obtained by directly scaling the LSND anomaly.
Author
Dongha Lee
(KEK)