Nuclei in the Cosmos - IX

Session

4 Big-bang nucleosynthesis

26 Jun 2006, 17:10

CERN, Geneva

Conveners

4 Big-bang nucleosynthesis

• Carmen Angulo (Université catholique de Louvain)

263. Recent results in Big-Bang Nucleosynthesis

Alain Coc (CSNSM,CNRS/IN2P3 and Universite Paris Sud)

26/06/2006, 17:10

Cosmology and big bang nucleosynthesis

Invited

Primordial nucleosynthesis (BBN) has been used for the determination of the baryonic density of the universe. It has now been superseded, for this purpose, by the more precise determination provided by the analysis of the CMB anisotropies by WMAP. Nevertheless, BBN is still very interesting as when we look back into the history of the universe, this is the last era for which, in...

178. Is Deuterium Cosmological?

Donald Lubowich (Hofstra University, Hempstead, New York)

26/06/2006, 17:40

Oral contribution

All the astronomical observations of deuterium are consistent with a cosmological origin of D. Deuterium has been extensively studied because it is not produced via stellar nucleosynthesis and is thought to be primarily produced via the big-bang so its abundance will only decrease with time unless there are additional sources of D. The D/H ratio is an important prediction of standard...

35. New measurement of the cross section of the Big Bang nucleosynthesis reaction D(a,g)6Li and its astrophysical impact

Fairouz Hammache (IPN-Orsay)

26/06/2006, 18:00

Cosmology and big bang nucleosynthesis

Oral contribution

The recent observations of non-negligible amounts of 6Li in old halo stars [1] have renewed interest in the Big-Bang Nucleosynthesis (BBN) of 6Li. The deduced primordial 6Li abundance was found to be unexpectedly large compared to the BBN predictions. One important ingredient in the BBN predictions is the low-energy D(a,g)6Li cross section. Up to now, the only available experimental...