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Measurement of the Rate of νe+dp+p+e Interactions Produced by B8 Solar Neutrinos at the Sudbury Neutrino Observatory

Q. R. Ahmad et al. (SNO Collaboration)
Phys. Rev. Lett. 87, 071301 – Published 25 July 2001
Physics logo See Focus story: Nobel Prize—Neutrinos Oscillate
An article within the collection: Letters from the Past - A PRL Retrospective
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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 νe’s is measured by the CC reaction rate to be φCC(νe)=1.75±0.07(stat)0.11+0.12(syst)±0.05(theor)×106cm2s1. Comparison of φCC(νe) to the Super-Kamiokande Collaboration’s precision value of the flux inferred from the ES reaction yields a 3.3σ difference, assuming the systematic uncertainties are normally distributed, providing evidence of an active non- νe component in the solar flux. The total flux of active 8B neutrinos is determined to be 5.44±0.99×106cm2s1.

  • Received 18 June 2001

DOI:https://doi.org/10.1103/PhysRevLett.87.071301

©2001 American Physical Society

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This article appears in the following collection:

Letters from the Past - A PRL Retrospective

2008 marked PRL’s 50th anniversary. As part of the celebrations a collection of milestone Letters was started. The collection contains Letters that have made long-lived contributions to physics, either by announcing significant discoveries, or by initiating new areas of research.

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Nobel Prize—Neutrinos Oscillate

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Vol. 87, Iss. 7 — 13 August 2001

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