SolarB<mml:mprescripts/>8and hep Neutrino Measurements from 1258 Days of Super-Kamiokande Data

2001/03/20 by Kamiokande Collaboration, Satoshi Fukuda, Y. Fukuda +97 · 1,024 citations
Chemistry · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Chemistry #Flux (metallurgy) #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics theoretical and experimental studies #Physics #hep-ex

paper · pdf · doi:10.1103/physrevlett.86.5651

published in Physical Review Letters 86(25), 5651-5655 (American Physical Society) · 7 pages, 5 figures, submitted to PRL (part of this paper)

arxiv created 2001/03/20 · openalex publication_date 2001/06/18 · arxiv updated 2010/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Solar neutrino measurements from 1258 days of data from the Super-Kamiokande detector are presented. The measurements are based on recoil electrons in the energy range 5.0--20.0 MeV. The measured solar neutrino flux is 2.32\ifmmode±\else\textpm\fi0.03(stat)_\ensuremath-0.07^+0.08(syst)\ifmmode×\else\texttimes\fi10⁶cm^\ensuremath-2s^\ensuremath-1, which is 45.1\ifmmode±\else\textpm\fi0.5(stat)_\ensuremath-1.4^+1.6(syst)% of that predicted by the BP2000 SSM. The day vs night flux asymmetry (\ensuremathΦ_n\ensuremath-\ensuremathΦ_d)/\ensuremathΦ_average is 0.033\ifmmode±\else\textpm\fi0.022(stat)_\ensuremath-0.012^+0.013(syst). The recoil electron energy spectrum is consistent with no spectral distortion. For the hep neutrino flux, we set a 90% C.L. upper limit of 40\ifmmode×\else\texttimes\fi10³cm^\ensuremath-2s^\ensuremath-1, which is 4.3 times the BP2000 SSM prediction.

Citations

• Measurements of the Solar Neutrino Flux from Super-Kamiokande's First 300 Days

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