Search for periodicities in the B8 solar neutrino flux measured by the Sudbury Neutrino Observatory

B. Aharmim et al. (SNO Collaboration)
Phys. Rev. D 72, 052010 – Published 30 September 2005

Abstract

A search has been made for sinusoidal periodic variations in the B8 solar neutrino flux using data collected by the Sudbury Neutrino Observatory over a 4-year time interval. The variation at a period of 1 yr is consistent with modulation of the B8 neutrino flux by the Earth’s orbital eccentricity. No significant sinusoidal periodicities are found with periods between 1 d 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 B8 neutrino flux.

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  • Received 18 July 2005

DOI:https://doi.org/10.1103/PhysRevD.72.052010

©2005 American Physical Society

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Vol. 72, Iss. 5 — 1 September 2005

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