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A Search for Periodicities in the ⁸B Solar Neutrino Flux Measured by the Sudbury Neutrino Observatory

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arxiv hep-ex/0507079 v2 pith:F3ORTMNL submitted 2005-07-18 hep-ex astro-phnucl-ex

A Search for Periodicities in the ⁸B Solar Neutrino Flux Measured by the Sudbury Neutrino Observatory

classification hep-ex astro-phnucl-ex
keywords neutrinofluxanalysissinusoidaldatamodulationobservatoryperiodicities
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A search has been made for sinusoidal periodic variations in the $^8$B solar neutrino flux using data collected by the Sudbury Neutrino Observatory over a 4-year time interval. The variation at a period of one year is consistent with modulation of the $^8$B neutrino flux by the Earth's orbital eccentricity. No significant sinusoidal periodicities are found with periods between 1 day and 10 years with either an unbinned maximum likelihood analysis or a Lomb-Scargle periodogram analysis. The data are inconsistent with the hypothesis that the results of the recent analysis by Sturrock et al., based on elastic scattering events in Super-Kamiokande, can be attributed to a 7% sinusoidal modulation of the total $^8$B neutrino flux.

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  1. Comparative Periodogram Analysis of 22 Years of Super-Kamiokande Solar $^{8}\mathrm{B}$ Neutrino Data: Classical, Phase-Based, and Information Theoretic Methods

    astro-ph.HE 2026-07 accept novelty 6.0

    Nine periodogram methods on 22 years of SK 8B data show the ~38.8 d signal is early-era only, reject ~24 d as seasonal, and limit any 11-year modulation to <0.2% of mean flux.