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arXiv · astro-ph/9508029

Assessing Big-Bang Nucleosynthesis

Craig J. Copi·David N. Schramm·Michael S. Turner
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Abstract

Systematic uncertainties in the light-element abundances and their evolution make a rigorous statistical assessment difficult. However, using Bayesian methods we show that the following statement is robust: the predicted and measured abundances are consistent with 95\% credibility only if the baryon-to-photon ratio is between $2\times 10^{-10}$ and $6.5\times 10^{-10}$ and the number of light neutrino species is less than 3.9. Our analysis suggests that the $^4$He abundance may have been systematically underestimated.

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Craig J. Copi, David N. Schramm, Michael S. Turner. 1995-08-07. Assessing Big-Bang Nucleosynthesis. https://doi.org/10.1103/physrevlett.75.3981

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