2001/12/02 by Satoru Watanabe, Watanabe, Satoru, Hiromoto Shibahashi +1
Physics and Astronomy · #Astronomy and Astrophysical Research #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Solar and Space Plasma Dynamics #Stellar, planetary, and galactic studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0112012
11 pages, 4 figures, submitted to PLB
arxiv created 2001/12/02 · openalex publication_date 2001/12/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We reexamine the theoretical limit on the axion coupling to two photons, gaγγ, in the light of a new solar model (seismic solar model) and the latest solar neutrino observations, the Super-Kamiokande and the Sudbury Neutrino Observatory (SNO). From the comparison of the theoretically expected and the measured neutrino fluxes, we set a limit gaγγ < 4.0× 10-10 ~GeV -1. This limit based on a new procedure is about a factor of 3 improvement over the previous theoretical limit and a more severe limit than the solar axion experiments. Therefore this limit is the most stringent limit on solar axions.