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
        }
}
  • Massó, Toldr
  • 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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