2005/10/30 by Moshe Gai, M. Gai
Earth and Planetary Sciences · Physics and Astronomy · #Atmospheric Ozone and Climate #Neutrino Physics Research #Solar and Space Plasma Dynamics #astro-ph #hep-ex #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1134/s1063778806110019
published as Phys.Atom.Nucl.69:1805-1811,2006 · Fifth International Conferenceon Non-Accelerator New Physics, Dubna, June 20-25, 2005. Work Supported by USDOE Grant No. DE-FG02-94ER40870
arxiv created 2005/10/30 · openalex publication_date 2006/11/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
The Standard Solar Model (BP04) predicts a total 8B neutrino flux that is 17.2% larger than that measured in the salt phase of the SNO detector (and if it is significant, it will indicate oscillation to sterile neutrinos). Hence, it is important to examine in detail the uncertainties (and values) of inputs to the BP04. Currently, the largest fractional uncertainty is due to the new evaluation of the surface composition of the Sun. We examine the nuclear input on the formation of solar 8B [S 17(0)] and demonstrate that it is still quite uncertain due to the ill-known slope of the measured astrophysical cross section factor and thus illdefined extrapolation to zero energy. This yields an additional reasonable uncertainty due to extrapolation of −3.0 +0.0 eV b ( −14% +0% ). Since a large discrepancy exists between measured as well as predicted slopes, the value of S 17(0) is dependent on the choice of data and theory used to extrapolate S 17(0). This situation must be alleviated by new measurement(s). The “world average” is driven by the Seattle result owing to the very small quoted uncertainty, which we, however, demonstrate to be an overestimated accuracy. We propose more realistic error bars for the Seattle results based on the published Seattle data.