Impact of the 7Be( , γ)11C Reaction on the Primordial Abundance of 7Li

We calculate the radiative capture cross section for 7Be( , γ)11C and its reaction rate of relevance for the Big Bang nucleosynthesis (BBN). The impact of this reaction on the primordial 7Li abundance is revised including narrow and broad resonances in the pertinent energy region. Our calculations s...

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Bibliographic Details
Published in:The Astrophysical journal 2018-07, Vol.862 (1)
Main Authors: Hartos, M., Bertulani, C. A., Shubhchintak, Mukhamedzhanov, A. M., Hou, S.
Format: Article
Language:English
Subjects:
Absorption cross sections
ASTRONOMY AND ASTROPHYSICS
Astrophysics
BBN
Beryllium
Beryllium 7
Big bang cosmology
Lithium
Lithium isotopes
Lithium puzzle
Nuclear fusion
nuclear reactions, nucleosynthesis, abundances
Nuclei (nuclear physics)
radiative capture
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Summary:We calculate the radiative capture cross section for 7Be( , γ)11C and its reaction rate of relevance for the Big Bang nucleosynthesis (BBN). The impact of this reaction on the primordial 7Li abundance is revised including narrow and broad resonances in the pertinent energy region. Our calculations show that it is unlikely that very low energy resonances in 11C of relevance for the BBN would emerge within a two-body potential model. Based on our results and a comparison with previous theoretical and experimental analyses, we conclude that the impact of this reaction on the so-called "cosmological lithium puzzle" is completely irrelevant.
ISSN:0004-637X
1538-4357
1538-4357
DOI:10.3847/1538-4357/aac9c1