Role of spectroscopic factors in the potential-model description of the Be7(p,gamma)B8 reaction

Abstract

In standard potential-model descriptions of the Be7(p,gamma)B8 reaction the Be7+p spectroscopic factors S appear in the cross section. We argue that the microscopic substructure effects which are represented by S are short-ranged and cannot affect the asymptotic normalization of the wave function. We believe that the standard way of describing reactions in a potential model may be incorrect and the low-energy cross section should not depend on S in the case of external capture reactions, like Be7(p,gamma)B8

Comments: 4 pages with 2 figures. The postscript file and more information are available at http://nova.elte.hu/~csoto