Search for solar axions produced by Compton process and bremsstrahlung using axioelectric effect

Abstract

The axio-electric effect in silicon atoms is sought for solar axions appearing owing to bremsstrahlung and the Compton process. Axions are detected using a Si(Li) detector placed in a low-background setup. As a result, a model-independent constraint on the axion-electron coupling constant $|g_{Ae}|\le 2.2\times 10^{-10}$ has been obtained, which leads to the bounds $m_A\le$ 7.9 eV and $m_A\le$ 1.4 keV for the mass of the axion in the DFSZ and KSVZ models, respectively (90% C.L.).

Comments: 6 pages, 6 figures, corrected typo in fig.1