Constraints on neutrino oscillations using 1258 days of Super-Kamiokande solar neutrino data.
Constraints on neutrino oscillations using 1258 days of Super-Kamiokande solar neutrino data.
S. Fukuda,Y. Fukuda,115 Authors,K. Young
TLDR
The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way, and two allowed regions at large mixing are found.
Abstract
We report the result of a search for neutrino oscillations using precise measurements of the recoil electron energy spectrum and zenith angle variations of the solar neutrino flux from 1258 days of neutrino-electron scattering data in Super-Kamiokande. The absence of significant zenith angle variation and spectrum distortion places strong constraints on neutrino mixing and mass difference in a flux-independent way. Using the Super-Kamiokande flux measurement in addition, two allowed regions at large mixing are found.