Abstract
We have reexamined the nuclear inputs to big-bang nucleosynthesis using Monte Carlo realization of the cross-section data to directly estimate theoretical uncertainties for the yields of , , and . Our results indicate that previous estimates of the uncertainties were too large by a factor of 2. Using the Burles–Tytler deuterium measurement, we infer a baryon density , predict a primeval mass fraction , and obtain a limit to the equivalent number of neutrino species (all at C.L.). We also identify key reactions and the energies, where improved data would allow further progress.
- Received 14 January 1999
DOI:https://doi.org/10.1103/PhysRevLett.82.4176
©1999 American Physical Society