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Big-Bang Nucleosynthesis with Nonzero Lepton Numbers
The Astrophysical Journal1976Vol. 206, pp. 26–26
Citations Over TimeTop 10% of 1976 papers
Abstract
Big-bang nucleosynthesis has been calculated for a universe with nonzero and unequal electron and muon lepton numbers. A comparison of the observed abundances of 4He and D with the values obtained in the calculations shows that the introduction of nonzero lepton numbers allows a wide margin of mean mass-energy densities at the present epoch, 10-31 g cm -3 <% Po <% 10-28 g cm -3. Hence the deuterium abundance is not as sensitive a gauge of Po as has been thought. The permissible ranges of all the quantum numbers of the Universe are discussed. Subject headings: abundances - cosmology - elementary particles - nucleosynthesis