Search for axioelectric effect of solar axions using BGO scintillating bolometer

Abstract

A search for axioelectric absorption of solar axions produced in the $ p + d \rightarrow {^3\rm{He}}+γ~(5.5~ \rm{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: $| g_{Ae}\times g_{AN}^3|< 1.9\times 10^{-10}$ 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: $|g_{Ae}| \leq (0.96 - 8.2)\times 10^{-8}$.

5 pages, 3 figures