Neutrino Physics with Large Liquid Scintillator Detectors

Scintillator detectors will continue to make critical measurements and discoveries with neutrinos, from their first observation to their use as tools to study the Earth, the Sun, supernovae, and more. These detectors continue to increase in size, extending their physics reach and deepening their impact. Currently-operating 780-ton SNO+ has measured neutrinos from the Sun and distant nuclear reactors, both of which are reported here. And in the near future, SNO+ will begin its search for the neutrinoless double beta decay of ¹³⁰Te. Forthcoming 20-kton JUNO would make the most precise measurements of several neutrino oscillation parameters, and attain leading sensitivities in studies of neutrinos from various sources. Results and prospects of these and other experiments are overviewed, as well as ongoing R&D, which is exploring various approaches to improving the properties and deployment of scintillator detector elements, including the distinction of scintillation and Cherenkov photons.