Big-Bang Nucleosynthesis Predictions for Precision Cosmology

Details Big-Bang Nucleosynthesis Predictions for Precision Cosmology Big-Bang Nucleosynthesis Predictions for Precision Cosmology

2000-10-09

arxiv.org/abs/astro-ph/0010171v4

Astrophys.J. 552 (2001) L1-L6

Astronomy and Astrophysics

Astrophysics

5 pages, 3 figures, ApJL, in press

Scientific paper

10.1086/320251

The determination of the primeval deuterium abundance has opened a precision era in big-bang nucleosynthesis (BBN), making accurate predictions more important than ever before. We present in analytic form new, more precise predictions for the light-element abundances and their error matrix. Using our predictions and the primeval deuterium abundance we infer a baryon density of Omega_B h^2 = 0.020 pm 0.002 (95% cl) and find no evidence for stellar production (or destruction) of 3He beyond burning D to 3He. Conclusions about 4He and 7Li currently hinge upon possible systematic error in their measurements.

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