Description
Solar neutrinos have played a fundamental historical role in the discovery of the phenomenon of neutrino oscillations and thus non-zero neutrino mass. Even today, the study of solar neutrinos provides an important insight both into the neutrino as well as into the stellar and solar physics. Borexino experiment, situated in the under-ground LNGS laboratory in Italy, has made a breakthrough in the liquid-scintillator technique by reaching extreme levels of radio-purity of the scintillator and of all construction materials. This success made it possible to become the first experiment able of doing the solar-neutrino spectroscopy across a broad energy range from roughly 200 keV to 10 MeV. The seminar will give an overview of Borexino solar-neutrino measurements (7Be, pep, 8B, the best limit on CNO neutrinos) and will concentrate on the latest result: the first real-time detection of pp-neutrinos which, according to Physics World, was listed among the Top 10 Physics Breakthroughs of 2014.