Speaker
Description
Borexino is a large solar neutrino detector running at the Laboratori Nazionali del Gran Sasso since 2007. Neutrinos are detected via their interaction with a 300-ton liquid scintillator target, purified to achieve unprecedented levels of radio-purity. Borexino has detected most of the expected solar neutrino spectrum, as well as anti-neutrinos from Earth’s radioactivity and from nuclear reactors with a baseline of ~1,000 km. Recently, neutrinos from the entire pp fusion chain in the Sun have been measured with refined precision using analysis tools that fully exploit our understanding of the detector. Among these, the Beryllium-7 neutrinos are now measured with ~3% precision, which contributes to refining solar models and helps address the solar metallicity problem. These recent results will be presented along with an update on ongoing efforts to measure the last missing tile in the solar neutrino puzzle: CNO neutrinos.
