Big-Bang Nucleosynthesis Predictions for Precision Cosmology

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  • 10 October 2000
Abstract
The determinination of the primeval deuterium abundance has opened the precision era in big-bang nucleosynthesis (BBN), and accurate predictions are a key to fully exploiting BBN. We present new, more precise predictions for the light-element abundance yields, errors, and correlations in analytic form. Using these results we infer: baryon density Omega_B h^2 = 0.0189 +/- 0.0019, depletion of 7Li in old halo stars d_7 = 0.28 - 0.53, and stellar depletion of 3He d_23 = 0.54 -1.4 (all at 95% confidence). Consistency of the BBN predictions and light-element abundances hinges on some depletion of 7Li in old halo stars.

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