ABSTRACT
What about the future? Taking into account oscillations, the solar neutrino data are consistent with the theoretical calculations for the sun. However, as of 2007 there was no direct observation of the main neutrinos, those from the original pp reaction (the top reaction in Figure 17.1) and those from the capture in beryllium. While we assume that the gallium experiment results were mainly due to these neutrinos, it is important to measure these two neutrino uxes separately to quantitatively conrm the theory. An experiment called Borexino is operating in Italy designed to detect electrons scattered by the monoenergetic neutrinos that come from the electron capture in beryllium. e greatest challenge is to directly detect the main group of neutrinos, those that come from the very rst reaction. is will be very dicult because of their very low energy; however, the detection of these neutrinos would provide proof to the world that we really do understand the major source of energy for mankind, the sun.
