Neutrino-lifetime constraints from neutral hydrogen in the Galactic halo

Details Neutrino-lifetime constraints from neutral hydrogen in the Galactic halo Neutrino-lifetime constraints from neutral hydrogen in the Galactic halo

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981phrvl..46.1369m&link_type=abstract

Physical Review Letters, vol. 46, May 25, 1981, p. 1369-1372. Research supported by the University of Texas

Physics

39

Hydrogen Clouds, Intergalactic Media, Neutral Gases, Neutrinos, Photoionization, Radiative Lifetime, Gas Density, Halos, Milky Way Galaxy, Particle Mass, Recombination Coefficient

Scientific paper

Massive neutrinos may dominate the universe's rest mass and compose galactic halos. By requiring that the photoionization of the high-velocity clouds of neutral hydrogen near the Galaxy not exceed observational limits, it is found that the radiative decay lifetime for ionizing photon production by neutrinos (neutrino mass greater than 27.2 eV) composing the Galactic halo must exceed 10 to the 24th sec.

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