Measurement of the Rate ofνe+d→p+p+e−Interactions Produced byB<mml:mprescripts/>8Solar Neutrinos at the Sudbury Neutrino Observatory

2001/06/30 by SNO Collaboration, Rushdy Ahmad, R. C. Allen +98 · 1,947 citations
Chemistry · Physics and Astronomy · #Analytical Chemistry (journal) #Astrophysics #Chemistry #Dark Matter and Cosmic Phenomena #Deuterium #Electron #Flux (metallurgy) #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics theoretical and experimental studies #Physics #hep-ex #nucl-ex

paper · pdf · doi:10.1103/physrevlett.87.071301

published in Physical Review Letters 87(7), 071301 (American Physical Society) · 6 pages (LaTex), 3 figures, submitted to Phys. Rev. Letters

arxiv created 2001/06/30 · openalex publication_date 2001/07/25 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Solar neutrinos from ⁸B decay have been detected at the Sudbury Neutrino Observatory via the charged current (CC) reaction on deuterium and the elastic scattering (ES) of electrons. The flux of \ensuremathν_e's is measured by the CC reaction rate to be \ensuremathφ^CC(\ensuremathν_e)\phantom\rule0ex0ex=\phantom\rule0ex0ex1.75\ifmmode±\else\textpm\fi0.07(stat)_\ensuremath-0.11^+0.12(syst)\ifmmode±\else\textpm\fi0.05(theor)\ifmmode×\else\texttimes\fi10⁶cm^\ensuremath-2s^\ensuremath-1. Comparison of \ensuremathφ^CC(\ensuremathν_e) to the Super-Kamiokande Collaboration's precision value of the flux inferred from the ES reaction yields a 3.3\ensuremathσ difference, assuming the systematic uncertainties are normally distributed, providing evidence of an active non- \ensuremathν_e component in the solar flux. The total flux of active ⁸B neutrinos is determined to be 5.44\ifmmode±\else\textpm\fi0.99\ifmmode×\else\texttimes\fi10⁶cm^\ensuremath-2s^\ensuremath-1.

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