Big-Bang Nucleosynthesis Predictions for Precision Cosmology

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  • 18 January 2001
Abstract
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 these results we infer: baryon density Omega_Bh^2 = 0.020 pm 0.002; apparent ``underabundance'' of 7Li in old halo stars, f_7 = 0.20 - 0.55 (both 95% cl), and no evidence for net stellar production of 3He beyond burning of D to 3He.

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