Constraints on unstable heavy neutrinos from cosmology

Details Constraints on unstable heavy neutrinos from cosmology Constraints on unstable heavy neutrinos from cosmology

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986japa....7...59v&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 7, June 1986, p. 59-70.

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1

Constraints, Cosmology, Heavy Nuclei, Motion Stability, Neutrinos, Computational Astrophysics, Particle Mass, Radioactive Decay

Scientific paper

Cosmological scenarios with massive unstable neutrinos are discussed. Restrictions on the mass and the lifetime of the unstable neutrino are derived from age and mass density of the universe and the growth of primordial fluctuations. It will not be possible to accommodate unstable neutrinos with masses above about 1 keV in standard cosmology unless they have exceedingly small lifetime: tau less than 5 x 10 to the 8th s.

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