Results and physics implications of the precision measurement of the 7Be solar neutrino flux performed with the borexino detector

Abstract

Borexino is a massive, calorimetric liquid scintillator detector installed at the underground Gran Sasso Laboratory. With its unprecedented radiopurity levels achieved in the core of the detection medium, it is the only experiment in operation able to study in real time solar neutrino interactions in the challenging sub-MeV energy region. The recently achieved precise measurement of the 7Be solar neutrino flux, the accurate determination of the corresponding day/night asymmetry, and their physics implications are described in this work.