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Constraint on solar axions from seismic solar models

Satoru Watanabe·Hiromoto Shibahashi
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Abstract

We reexamine the theoretical limit on the axion coupling to two photons, $g_{aγγ}$, 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 $g_{aγγ} < 4.0\times 10^{-10} ~\mathrm{GeV} ^{-1}$. 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.

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Satoru Watanabe, Hiromoto Shibahashi. 2001-12-02. Constraint on solar axions from seismic solar models. https://arxiv.org/abs/hep-ph/0112012

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