Be7(p,γ)8B cross section and the properties ofBe7

We study the nonresonant part of the ${}_{}{}^7{}_{}{}^{}\mathrm{Be}$(p,γ${)}^8$B reaction using a three-cluster resonating group model that is variationally converged and virtually complete in ${}_{}{}^4{}_{}{}^{}\mathrm{He}$ ${+}^3$He+p model space. The importance of using adequate nucleon-nucleon interaction is demonstrated. We find that the low-energy astrophysical S factor is linearly correlated with the quadrupole moment of ${}_{}{}^7{}_{}{}^{}\mathrm{Be}$. A range of parameters is found where the most important ${}_{}{}^8{}_{}{}^{}\mathrm{B}$, ${}_{}{}^7{}_{}{}^{}\mathrm{Be}$, and ${}_{}{}^7{}_{}{}^{}\mathrm{Li}$ properties are reproduced simultaneously; the corresponding S factor at ${\mathit{E}}_{\mathrm{c}.\mathrm{m}.\mathrm{}}$=20 keV is 24.6–26.1 eV b.