Axion-like particle searches with sub-THz photons

Authors :: Capparelli, L.
Cavoto, G.
Ferretti, J.
Giazotto, F.
Polosa, A. D.
Spagnolo, P.
Publication Year :: 2015
Abstract: We propose a variation, based on very low energy and extremely intense photon sources, on the well established technique of Light-Shining-through-Wall (LSW) experiments for axion-like particle searches. With radiation sources at 30 GHz, we compute that present laboratory exclusion limits on axion-like particles might be improved by at least four orders of magnitude, for masses m_a <~ 0.01~meV. This could motivate research and development programs on dedicated single-photon sub-THz detectors.<br />Comment: 10 pages, 5 figures, comments added, 1 figure added, to appear in Phys. Dark. Univ