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arXiv:astro-ph/9501101 (astro-ph)
[Submitted on 27 Jan 1995]

Title:Big Bad Nucleosynthesis: A Review

Authors:Lawrence M. Krauss (Case Western Reserve University)
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Abstract: Big Bang Nucleosynthesis represents perhaps the first, and still perhaps the most powerful particle-astrophysics connection. As such, it should provide an example for other work in this area. I discuss the current status of standard model BBN predictions and constraints, and then argue that the issue of observational systematic uncertainties is the key feature limiting our ability to constrain theory with observation. Nevertheless, several very important constraints are currently obtainable. For example, assuming maximal systematic uncertainties in $^4$He, D, and $^7$Li we find a conservative upper limit of $\Omega_B \le 0.16$ in order for BBN predictions to agree with observations. Equally significant, we find that BBN predictions are inconsistent unless $^4He$ abundance by mass is greater than $23.9\%$, or D +$^3$He estimates are incorrect. By contrast, unless systematic uncertainties are taken into account, the quoted $2\sigma$ observational upper limit on the primordial $^4He$ fraction is $23.8\%$.
Comments: uuencoded compressed postscript file. To appear in Nucl. Phys. B., Proceedings and Supplements. Based on invited lectures at Trends in Astroparticle Physics, Stockholm, Sweden Sept 1994 and From the Weak Scale to the Planck Scale, Warsaw, Poland Sept 1994
Subjects: Astrophysics (astro-ph); High Energy Physics - Phenomenology (hep-ph)
Report number: CWRU-P1-95
Cite as: arXiv:astro-ph/9501101
  (or arXiv:astro-ph/9501101v1 for this version)
  https://doi.org/10.48550/arXiv.astro-ph/9501101
Journal reference: Nucl.Phys.Proc.Suppl.43:208-220,1995
Related DOI: https://doi.org/10.1016/0920-5632%2895%2900477-Q

Submission history

From: Lawrence M. Krauss [view email]
[v1] Fri, 27 Jan 1995 22:59:32 UTC (94 KB)
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