Speaker
Description
SNO+ is a liquid scintillator experiment preparing to search for the lepton-flavor-violating process of neutrinoless double beta decay using more than one tonne of Te. With about 780 tonnes of highly-radiopure scintillator located 2 km underground in Ontario, Canada, SNO+ is also able to study antineutrinos from nuclear reactors at least 240 km away and antineutrinos from radioactive decays in the Earth. The present SNO+ measurement of $\Delta m^2_{21} = (7.93_{-0.24}^{+0.21}) \times 10^{−5}$ eV$^2$ is dominated by statistical uncertainty and is approaching the precision of the KamLAND measurement. With the precision of $\Delta m^2_{21}$ now dominated by the JUNO experiment, the SNO+ Collaboration will continue to collect data and provide a complementary measurement as the antineutrinos oscillate over greater distances and the analysis is subject to a different dominant background. The analysis of geoneutrinos at SNO+ has yielded $49_{−12}^{+13}$ TNU and is also dominated by statistics. This measurement in conjunction with those from different experimental sites will give a global picture of the Earth’s radiogenic heat production. SNO+ will also continue to improve its characterization of $(\alpha,n)$ and $\alpha-p$ interactions, which are important backgrounds in MeV-scale particle physics experiments.