New determination of proton spectroscopic factors and reduced widths for $^{8}$Be states in the $16.5-18.0$ MeV excitation energy region via the study of the $^{7}$Li($^{3}$He,d)$^{8}$Be transfer reaction at E$_{lab}$ $=\ 20$ MeV

A. Belhout, S. Ouichaoui, H. Beaumevieille +11