Study of $^7$Be+d reactions for Standard Big Bang Nucleosynthesis

Abstract : The recent WMAP results tightly constrain the baryon density in the universe, which in turn constrains the light element abundance predicted in Standard Big Bang Nucleosynthesis (SBBN). There is a discrepance in the $^7$Li abundance which cannot be explained by uncertainties in the main reactions included in the SBBN. Up to now, the influence of the reaction $^7Be(d,p)2\alpha$ has been neglected. We have investigated this reaction at SBBN energies using a radioactive $^7$Be beam and a $(CD_2)_n$ self-supporting target at the CYCLONE RIB facility at Louvain-la-Neuve. The experimental method is briefly described. Preliminary results and consequences for primordial nucleosynthesis are discussed.
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Contributeur : Dominique Girod <>
Soumis le : lundi 27 juin 2005 - 15:09:59
Dernière modification le : mardi 2 avril 2019 - 01:35:51

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C. Angulo, E. Casarejos, A. Coc, T. Davinson, N.L. Achouri, et al.. Study of $^7$Be+d reactions for Standard Big Bang Nucleosynthesis. 8th International Symposium on Nuclei in the Cosmos, Jul 2004, Vancouver, Canada. pp.775-778, ⟨10.1016/j.nuclphysa.2005.05.192⟩. ⟨in2p3-00024303⟩

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