Determination of the asymptotic normalization coefficient (nuclear vertex constant) for α+d→6Liα+d→6Li from the new direct measured d(α,γ)6Lid(α,γ)6Li data and its implication for extrapolating the d(α,γ)6Lid(α,γ)6Li astrophysical SS factor at Big Bang energies
Abstract
The results of the analysis of the new experimental astrophysical S factors Sexp24(E)Sexp24(E) [D. Trezzi et al., Astropart. Phys. 89, 57 (2017)] and those measured earlier [R. G. Robertson et al., Phys. Rev. Lett. 47, 1867 (1981)] for the nuclear-astrophysical d(α,γ)6Lid(α,γ)6Li reaction directly measured at extremely low energies EE, which is derived within the modified two-body potential method, are presented. New estimates and their uncertainties have been obtained for values of the asymptotic normalization coefficient for α+d→6Liα+d→6Li and for the direct astrophysical SS factors at Big Bang energies.