# Light spinless particle coupled to photons.

@article{Mass1995LightSP,
title={Light spinless particle coupled to photons.},
author={Mass{\'o} and Toldr},
journal={Physical review. D, Particles and fields},
year={1995},
volume={52 4},
pages={
1755-1763
}
}
• Published 1995
• Physics, Medicine
• Physical review. D, Particles and fields
• A pseudoscalar or scalar particle $\phi$ that couples to two photons but not to leptons, quarks and nucleons would have effects in most of the experiments searching for axions, since these are based on the $a \gamma \gamma$ coupling. We examine the laboratory, astrophysical and cosmological constraints on $\phi$ and study whether it may constitute a substantial part of the dark matter. We also generalize the $\phi$ interactions to possess $SU(2) \times U(1)$ gauge invariance, and analyze the… CONTINUE READING
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