vix.ing · top · new · best · stats

Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory

2002/04/30 by Rushdy Ahmad, SNO Collaboration, R. C. Allen +98 · 364 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex #nucl-ex

paper · pdf · doi:10.1103/physrevlett.89.011301

published as Phys.Rev.Lett.89:011301,2002 · 6 pages, 3 figures, correction to author list and minor typographical corrections to references

arxiv created 2002/05/09 · openalex publication_date 2002/06/13 · arxiv updated 2012/08/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/04

Abstract

Observations of neutral current neutrino interactions on deuterium in the Sudbury Neutrino Observatory are reported. Using the neutral current, elastic scattering, and charged current reactions and assuming the standard 8B shape, the electron-neutrino component of the 8B solar flux is 1.76 +/-0.05(stat.)+/-0.09(syst.) x106/(cm2 s), for a kinetic energy threshold of 5 MeV. The non-electron neutrino component is 3.41+/-0.45(stat.)+0.48,-0.45(syst.) x106/(cm2 s), 5.3 standard deviations greater than zero, providing strong evidence for solar electron neutrino flavor transformation. The total flux measured with the NC reaction is 5.09 +0.44,-0.43(stat.)+0.46,-0.43(syst.)x106/(cm2 s), consistent with solar models.

Citations

Cited by