Abstract
Background: The reaction is of critical importance in determining the flux of solar neutrinos through the -II and -III chains. For this reason and others, the description of the cross section and its extrapolation towards low-energy has always been a matter of intense debate. While large systematic differences have been present in the past, several recent measurements are all in excellent statistical agreement.
Purpose: The convergence of the recent individual experimental measurements of the reaction prompts a global analysis of the reaction data. From the combined data, a more precise estimate of the low-energy cross section can be determined.
Results: A global -matrix fit is used to describe the data as well as scattering data over a similar energy range. The -matrix fit is then subjected to a Monte Carlo analysis to extract the uncertainties on the cross section and corresponding reaction rate.
Conclusion: By combining several recent measurements of the reaction, the combined data yield a zero energy factor of keV b. This gives a total uncertainty in of keV b.
3 More- Received 11 March 2014
- Revised 8 August 2014
DOI:https://doi.org/10.1103/PhysRevC.90.035804
©2014 American Physical Society