Nuclear uncertainties of element yields in the big bang

Details Nuclear uncertainties of element yields in the big bang Nuclear uncertainties of element yields in the big bang

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...134..240b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 134, no. 2, May 1984, p. 240-243. Research supported by the National Research

Astronomy and Astrophysics

Astrophysics

11

Big Bang Cosmology, Elementary Particles, Light Elements, Nuclear Fusion, Abundance, Cross Sections, Deuterium, Helium Isotopes, Lithium Isotopes, Protostars

Scientific paper

The abundances of the light elements in the big bang are examined in the context of the uncertainties in the nuclear cross-sections and the number of neutrino pairs. In view of the nuclear uncertainties, the deuterium yield is uncertain by 25%, the helium 3 by 40%, the lithium 7 by a factor of two and the helium 4 abundance by less than 2%. The observed abundances of deuterium, lithium 7 and helium 4 are compatible with a universe with a density between 3 and 7×10-31 g cm-3 and with two or three low mass neutrino pairs.

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