Solar Neutrino Observables Sensitive to Matter Effects
Figure 1
as a function of for the currently available solar neutrino data (shown in blue solid line) and the various solar neutrino observables expected in the near future (by color lines specified in the following). The current data include the one from SNO lower energy threshold analysis and SK I–IV. In addition to the current constraints on , we show the improved constraints when future solar neutrino data are added one by one: 3 detection of the SK spectral upturn (magenta dashed line), low-energy solar neutrino flux measurements of 7Be at 5% and pep at 3% (red dash-dotted line), and 3 detection of the SK day-night asymmetry (black dotted line). The red dashed line shows the improved constraints by adding future spectral information at high and low energies. Finally, the global analysis by adding all the spectral information data and the day-night data produces the solid green line.
