%0 Journal Article
%T Precise Measurement of the Solar Neutrino Day/Night and Seasonal Variation in Super-Kamiokande-I
%A Super-Kamiokande Collaboration
%J Statistics
%D 2003
%I arXiv
%R 10.1103/PhysRevD.69.011104
%X The time variation of the elastic scattering rate of solar neutrinos with electrons in Super-Kamiokande-I was fit to the variations expected from active two-neutrino oscillations. The best fit in the Large Mixing Angle solution has a mixing angle of tan^2theta=0.55 and a mass squared difference of Deltam^2=6.3times10^-5eV^2 between the two neutrino mass eigenstates. The fitted day/night asymmetry of -1.8+-1.6(stat)+1.3-1.2(syst)% has improved statistical precision over previous measurements and agrees well with the expected asymmetry of -2.1%.
%U http://arxiv.org/abs/hep-ex/0309011v1