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New Bounds on Omega Baryons from Observational Big Bang Nucleosynthesis

Dimitar D. Sasselov·Dalia Goldwirth
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Abstract

We re-examine the systematic errors in the determination of the primordial helium abundance, $Y_{\rm P}$. We find that the systematics are significantly larger than the statistical errors. The uncertainty in (the determination of) $Y_{\rm P}$, is thus, larger than is currently claimed. Furthermore, most of the systematics lead to underestimate of $Y_{\rm P}$. The new upper bound allows cosmological models with no non-baryonic dark matter in which $Ω_{baryons} = Ω_{BBN} = Ω_{dyn}$.

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BibTeXRIS

Dimitar D. Sasselov, Dalia Goldwirth. 1994-07-07. New Bounds on Omega Baryons from Observational Big Bang Nucleosynthesis. https://arxiv.org/abs/astro-ph/9407019

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