2012

The cosmological 7Li problem from a nuclear physics perspective

Broggini, C., Canton, L., Fiorentini, G. et al.

Understand

The primordial abundance of 7Li as predicted by Big Bang Nucleosynthesis (BBN) is more than a factor 2 larger than what has been observed in metal-poor halo stars.

Herein, we analyze the possibility that this discrepancy originates from incorrect assumptions about the nuclear reaction cross sections relevant for BBN.
To do this, we introduce an efficient method to calculate the changes in the 7Li abundance produced by arbitrary (temperature dependent) modifications of the nuclear reaction rates.
Then, considering that 7Li is mainly produced from 7Be via the electron capture process 7Be + e -> 7Li + nu_e, we assess the impact of the various channels of 7Be destruction.

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J. P. Svenne, K. Amos, S. Karataglidis, D. van der Knijff, L. Canton and G. Pisent, Low-energy neutron- C 12 {}^{12}C analyzing powers: Results from a multichannel algebraic scattering theory , Phys. Rev. C 73
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Closest in time.
K. Amos, L. Canton, P. Fraser, S. Karataglidis, J. Svenne and D. van der Knijff, Linking the exotic structure of 17
2012
Closest in time.

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