New determination of the 7Be ground state spectroscopic factor and the 6Li(p, ${\rm{\gamma }}$)7 Be astrophysical ${S}({E})$ factors

The 'lithium problem' in Big Bang nucleosynthesis (BBN) has recently focused on reactions involving Be-7. The Li-6(p,gamma)Be-7 reaction can provide us not only with information about Li-6 destruction but also with information about Be-7 production. In the present work, the proton spectroscopic factor in Be-7 is extracted to be 0.70 +/- 0.17 from the angular distribution of Be-7(d, He-3)Li-6 at E-c.m. = 6.7 MeV. This value is then used to compute the direct component of the astrophysical Li-6(p,gamma)Be-7(g.s). S(E) factors and determine the resonance parameters from the total S(E) factors.