More on bigband nucleosynthesis with nonzero lepton numbers.
Abstract
The calculation of bigbang nucleosynthesis with nonzero lepton numbers is extended to atomic weights less than 12. The observed abundances of D and He4 place only a lower limit on the present mean baryon density of the Universe: not less than 5 x 10 to the 31st g/cu cm for primordial D/H equals .000014 by number (assuming no astration), and not less than 3.5 x 10 to the 31st g/cu cm if the primordial abundance was twice as high, and half of it has been destroyed in stars. In the case of astration, primordial Li7 can account at most for only about 25 percent of the observed abundance (15 percent for zero lepton numbers).
 Publication:

The Astrophysical Journal
 Pub Date:
 November 1977
 DOI:
 10.1086/155678
 Bibcode:
 1977ApJ...218..253B
 Keywords:

 Abundance;
 Big Bang Cosmology;
 Leptons;
 Nuclear Fusion;
 Deuterium;
 Helium Isotopes;
 Lithium Isotopes;
 Universe;
 Astrophysics