Search for axioelectric effect of 5.5 MeV solar axions using BGO detectors

Abstract

A search for axioelectric absorption of solar axions produced in the $p+d\to {}^3\mathrm{He}+\gamma (5.5\mathrm{MeV})$ reactions has been performed with a BGO detector placed in a low-background setup. A model-independent limit on an axion-nucleon and axion-electron coupling constant has been obtained: $|g_{Ae}\times g_{AN}^3|<2.9\times 10^{-9}$ for 90% confidence level. The constrains of the axion-electron coupling have been obtained for hadronic axion with masses in (0.1 - 1) MeV range: $|g_{Ae}|\le (1.4-9.7)\times 10^{-7}$.

6 pages, 4 figures, to be published in EPJ C. arXiv admin note: substantial text overlap with arXiv:1007.3387

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