First results of the SNO+ experiment

by Valentina Lozza (LIP)

311 (LIP seminar room)


LIP seminar room

LIP-Lisboa, 3Is, Av. Gama Pinto, 2, 1649-003 Lisboa, Portugal

SNO+ is a large multi-purpose liquid scintillator based experiment, with the main physics goal of searching for the neutrinoless double-beta decay of 130Te.
The first of the three SNO+ phases has started in May 2017, with the detector filled with ultra-pure water. The deep underground location (6000 m.w.e.) and the low background levels, allowed new physics searches and the B8 solar neutrino flux measurement in the 5-10 MeV energy range.

This talk focuses on the first two physics results of the initial water phase published in early 2019: the search for the nucleon (neutron and proton) decays into invisible modes (i.e. into three neutrinos), and the confirmation of the 8B neutrino flux above 6 MeV energy (background free).

Currently, SNO+ has began the transition to the scintillator phase. The double-beta decay phase is expected to start in early 2020, when the ultra-pure liquid scintillator will be loaded with 3.9 tonnes of natural tellurium, for a half-life sensitivity larger than 2x10^26 years.