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Title: Big bang nucleosynthesis: An update

An update on the standard model of big bang nucleosynthesis (BBN) is presented. With the value of the baryon-tophoton ratio determined to high precision by WMAP, standard BBN is a parameter-free theory. In this context, the theoretical prediction for the abundances of D, {sup 4}He, and {sup 7}Li is discussed and compared to their observational determination. While concordance for D and {sup 4}He is satisfactory, the prediction for {sup 7}Li exceeds the observational determination by a factor of about four. Possible solutions to this problem are discussed.
Authors:
 [1]
  1. William I. Fine Theoretical Physics Institute, School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455 (United States)
Publication Date:
OSTI Identifier:
22218288
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1548; Journal Issue: 1; Conference: 9. Mexican school on gravitation and mathematical physics: Cosmology for the 21. century, Puerto Vallarta, Jalisco (Mexico), 3-7 Dec 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASTROPHYSICS; BARYONS; COMPARATIVE EVALUATIONS; COSMOLOGICAL MODELS; COSMOLOGY; DEUTERIUM; HELIUM 4; LITHIUM 7; MASS NUMBER; MATHEMATICAL SOLUTIONS; NUCLEOSYNTHESIS; PHOTONS; STANDARD MODEL; WEAK INTERACTIONS