Limits on neutrino degeneracy from nucleosynthesis

Calculations of the present He-4 and H2 abundances in the universe are shown to match with observations and predictions that neutrinos dominate the mass density of the universe. The baryon density is considered to have had a significant effect during earliest nucleosynthesis, and the allowed regions of He-4 and H2 abundances are calculated in terms of the baryon density and neutrino degeneracy parameter, and are demonstrated to not depend on the expansion rate. Isoabundance curves are generated for the expansions, and a fit is made within observed bounds for the universe baryon density. The universe baryon density is found to reside in the range 4.5 x 10 to the -31st to 5.7 x 10 to the -30th g/cu cm.