Big Bad Nucleosynthesis: A Review

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dc.creatorKrauss, Lawrence M.
dc.date1995-01-27
dc.date.accessioned2026-07-07T12:01:01Z
dc.date.available2026-07-07T12:01:01Z
dc.descriptionBig 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 $Ω_B \le 0.16$ 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 $2σ$ observational upper limit on the primordial $^4He$ fraction is $23.8\%$.
dc.descriptionuuencoded 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
dc.identifierhttps://arxiv.org/abs/astro-ph/9501101
dc.identifierhttp://arxiv.org/abs/astro-ph/9501101
dc.identifierNucl.Phys.Proc.Suppl.43:208-220,1995
dc.identifierdoi:10.1016/0920-5632(95)00477-Q
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206973
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleBig Bad Nucleosynthesis: A Review
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