Imprint of SNO neutral current data on the solar neutrino problem

2002/04/30 by V Barger, V. Barger, D. Marfatia +5 · 12 citations
Physics and Astronomy · #Astrophysics and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #astro-ph #hep-ex #hep-ph #nucl-ex

paper · pdf · doi:10.1016/s0370-2693(02)01955-x

published as Phys.Lett.B537:179-186,2002 · Version to appear in PLB

arxiv created 2002/05/14 · openalex publication_date 2002/06/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We perform a global analysis in the framework of two active neutrino oscillations of all solar neutrino data, including the recent SNO day and night spectra (comprised of the charged current (CC), elastic scattering (ES) and neutral current (NC) events), the Super-Kamiokande (SK) day and night spectra (from 1496 days) and the updated SAGE results. We find that the Large Mixing Angle (LMA) solution is selected at the 99% C.L.; the best-fit parameters are Δm²=5.6 × 10^-5 eV² and θ=32^∘. No solutions with θ≥ π/4 are allowed at the 5σC.L. Oscillations to a pure sterile state are excluded at 5.3σ, but a sizeable sterile neutrino component could still be present in the solar flux.

Citations

• Preliminary reference Earth model

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• Flavor coupled with chiral oscillations in the presence of an external magnetic field
• Large Mixing Angle Oscillations as a Probe of the Deep Solar Interior
• The Physics Potential of Future Long Baseline Neutrino Oscillation Experiments
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