What is the BBN prediction for the baryon density and how reliable is it?
Sep, 2000
7 pages
Published in:
- Phys.Rev.D 63 (2001) 063512
e-Print:
- astro-ph/0008495 [astro-ph]
Report number:
- FERMILAB-PUB-00-239-A
Citations per year
Abstract: (arXiv)
Together, the standard theory of big-bang nucleosynthesis (BBN) and the primeval deuterium abundance very precisely peg the baryon density, Omega_B h^2 = 0.0190\pm 0.0018 (95% cl). The uncertainty is due to that in the deuterium abundance and input nuclear data, in the ratio of about 2 to 1. We discuss critically the reliability of the BBN baryon density, and conclude that within the standard cosmology and standard theory of BBN a baryon density Omega_B h^2 = 0.030 (the central value implied by recent CMB anisotropy measurements) simply cannot be accommodated.- cosmological model
- baryon: density
- light nucleus: production
- deuterium: density
- cosmic background radiation: anisotropy
- numerical calculations: interpretation of experiments
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