EDP Sciences, The European Physical Journal A, 11(50)
DOI: 10.1140/epja/i2014-14170-2
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In this paper, we point out that a measurement of the charge radius of Boron-8 provides indirect access to the S-factor for radiative proton capture on Beryllium-7 at low energies. We use leading-order halo effective field theory to explore this correlation and we give a relation between the charge radius and the S-factor. Furthermore, we present important technical aspects relevant to the renormalization of pointlike P-wave interactions in the presence of a repulsive Coulomb interaction. ; Comment: Accepted for publication in European Physical Journal A. 29 pages, 9 figures