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New measurements of the 7 Be(n, α ) 4 He and 7 Be(n,p) 7 Li reaction cross sections from thermal to keV neutron energies have been recently performed at CERN/n_TOF. Based on the new experimental results, astrophysical reaction rates have been derived for both reactions, including a proper evaluation of their uncertainties in the thermal energy range of interest for big bang nucleosynthesis studies. The new estimate of the 7 Be destruction rate, based on these new results, yields a decrease of the predicted cosmological 7 Li abundance insufficient to provide a viable solution to the cosmological lithium problem.

epj web of conferences

New reaction rates for the destruction of<sup>7</sup>Be during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem

New reaction rates for the destruction of7Be during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem

New reaction rates for the destruction of⁷Be during big bang nucleosynthesis measured at CERN/n_TOF and their implications on the cosmological lithium problem