2003/09/03 by M. Smy, Kamiokande Collaboration, Y. Ashie +97 · 202 citations
Physics and Astronomy · #Astrophysics #Astrophysics and Cosmic Phenomena #Asymmetry #Mixing (physics) #Neutrino #Neutrino Physics Research #Neutrino oscillation #Particle physics #Particle physics theoretical and experimental studies #Physics #Solar neutrino #Super-Kamiokande #Variation (astronomy) #hep-ex
paper · pdf · doi:10.1103/physrevd.69.011104
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 69(1) (American Physical Society) · 5 pages, 7 figures; submitted to Phys. Rev. D (rapid communication)
arxiv created 2003/09/03 · openalex publication_date 2004/01/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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 tan2\ensuremathθ=0.55 and a mass squared difference of \ensuremathΔm2=6.3\ifmmode×\else\texttimes\fi10^\ensuremath-5eV2 between the two neutrino mass eigenstates. The fitted day-night asymmetry of \ensuremath-1.8\ifmmode±\else\textpm\fi1.6(stat)_\ensuremath-1.2+1.3(syst)% has improved statistical precision over previous measurements and agrees well with the expected asymmetry of \ensuremath-2.1%.