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arXiv:astro-ph/0008495 (astro-ph)
[Submitted on 30 Aug 2000 (v1), last revised 19 Dec 2000 (this version, v4)]

Title:What Is The BBN Prediction for the Baryon Density and How Reliable Is It?

Authors:Scott Burles, Kenneth M. Nollett, Michael S. Turner
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Abstract: Together, the standard theory of big-bang nucleosynthesis (BBN) and the primeval deuterium abundance now very precisely peg the baryon density. Based upon our analysis of the deuterium data and the theoretical uncertainties associated with the BBN predictions, we determine Omega_B h^2 = 0.020\pm 0.002 (95% C.L.), with the uncertainty from the measured deuterium abundance about twice that from the predicted abundance. We discuss critically the reliability of the BBN baryon density, and in light of possible systematic uncertainties also derive a very conservative range. We conclude that within the standard cosmology and standard theory of BBN a baryon density Omega_B h^2=0.032 (the central value implied by recent CMB anisotropy measurements) simply cannot be accommodated.
Comments: 7 pages, 4 figures, Phys. Rev. D, in press New figure and updated numbers
Subjects: Astrophysics (astro-ph)
Report number: FERMILAB-Pub-00-239-A
Cite as: arXiv:astro-ph/0008495
  (or arXiv:astro-ph/0008495v4 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/0008495
Journal reference: Phys.Rev. D63 (2001) 063512
Related DOI: https://doi.org/10.1103/PhysRevD.63.063512

Submission history

From: Scott Burles [view email]
[v1] Wed, 30 Aug 2000 22:37:07 UTC (37 KB)
[v2] Fri, 8 Sep 2000 22:41:59 UTC (37 KB)
[v3] Mon, 23 Oct 2000 21:42:59 UTC (37 KB)
[v4] Tue, 19 Dec 2000 22:36:46 UTC (101 KB)
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