Big-bang nucleosynthesis and the baryon density of the universe

  title={Big-bang nucleosynthesis and the baryon density of the universe},
  author={Craig J Copi and David N. Schramm and Michael S. Turner},
  pages={192 - 199}
For almost 30 years, the predictions of big-bang nucleosynthesis have been used to test the big-bang model to within a fraction of a second of the bang. The agreement between the predicted and observed abundances of deuterium, helium-3, helium-4, and lithium-7 confirms the standard cosmology model and allows accurate determination of the baryon density, between 1.7 x 10(-31) and 4.1 x 10(-31) grams per cubic centimeter (corresponding to about 1 to 15 percent of the critical density). This… Expand

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