1998/06/30 by B. K. Jennings, B.K. Jennings, S. Karataglidis +1 · 4 citations
Physics and Astronomy · #Neutrino Physics Research #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #astro-ph #nucl-th
paper · pdf · doi:10.1103/physrevc.58.3711
published as Phys.Rev.C58:3711-3721,1998 · 30 pages, 12 figures, 6 tables
arxiv created 1998/08/07 · openalex publication_date 1998/12/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate the energy dependence of the astrophysical S factor for the reaction 7Be(p,\ensuremathγ)8B, the primary source of high-energy solar neutrinos in the solar pp chain. Using simple models we explore the model dependence in the extrapolation of the experimental data to the region of astrophysical interest near 20 keV. We find that below approximately 400 keV the energy dependence is very well understood and constrained by the data for the elastic scattering of low-energy neutrons from 7Li. Above 400 keV nuclear distortion of the wave function of the incident proton introduces a significant model dependence. This is particularly important for the s-wave contribution to the S factor. The extracted value of S(0) is 19.0\ifmmode±\else\textpm\fi1.0\ifmmode±\else\textpm\fi0.2 eV b. The first error is experimental while the second is an estimate of the theoretical error in the extrapolation.