Constraints on leptonic asymmetry and cosmological constant from neutrino rest mass

Details Constraints on leptonic asymmetry and cosmological constant from neutrino rest mass Constraints on leptonic asymmetry and cosmological constant from neutrino rest mass

May 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....98..412l&link_type=abstract

Astronomy and Astrophysics, vol. 98, no. 2, May 1981, p. 412-414.

Astronomy and Astrophysics

Astrophysics

5

Cosmology, Leptons, Neutrinos, Particle Mass, Abundance, Astronomical Models, Asymmetry, Constraints

Scientific paper

Using values of the e-type neutrino rest mass (between 14 and 46 eV) claimed by Lyoubimov et al. (1980), constraints on leptonic asymmetry via the degeneracy parameter (xi) and on the cosmological constant are presented. Limits obtained on xi (less than 3.5) are more stringent than those previously obtained from helium or deuterium abundance (xi less than 20). It is also shown that, regardless of the value of xi, high neutrino masses favor spatially closed models of the universe in the infinite expansion with positive cosmological constant.

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