A search for solar axion induced signals with COSINE-100

Abstract

We present results from a search for solar axions with the COSINE-100 experiment. We find no evidence of solar axion events from a data-set of 6,303.9 kg$\cdot$days exposure and set a 90\,\% confidence level upper limit on the axion-electron coupling, $g_{ae}$, at 1.70~$\times$~$10^{-11}$ for an axion mass less than 1\,keV/c${}^2$. This limit excludes QCD axions heavier than 0.59\,eV/c${}^2$ in the DFSZ model and 168.1\,eV/c${}^2$ in the KSVZ model.

7 pages, 8 figures

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