Mathematics – Logic
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990svjnp..52...65b&link_type=abstract
Sov. J. Nucl. Phys., Vol. 52, No. 1, p. 65 - 68
Mathematics
Logic
2
Universe: Background Radiation, Universe: Neutrinos
Scientific paper
The authors analyze the cosmological effects of axion decays a→2γ in a low-energy model of broken gauge SU(3)H family symmetry with associated global U(1)H Peccei-Quinn symmetry, in which the main source of axions in the Universe is the early neutrino decay ντ→νμa with subsequent νμ→νea decay. The authors show that in this model for ma ≍ 3 eV the electromagnetic background due to axion decay is in good agreement with the observed backgrounds in the optical, ultraviolet, and infrared regions. For z ≡ 1000 the decay photons may ionize a significant fraction of matter, lowering thereby the anisotropy of the thermal electromagnetic background.
Berezhiani Zurab G.
Khlopov Maxim Yu.
Khomeriki Ramaz
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