Updated S-factors for the 7Be(p,gamma)8B reaction

We present revised ⁷Be(p,gamma)⁸B S-factors based on our previously published measurements, using a more detailed target analysis and improved stopping powers.
Extrapolating our data below the 1⁺ resonance to solar energies using the latest cluster model calculations of Descouvemont, we find that S{17}(0) = 21.5 pm 0.6(expt) pm 0.6(theor) eV b. Fitting all modern, low-energy (p,$\gamma$) data with the same theory, we find a ``best" value S{17}(0) = 20.9 pm 0.6(expt) pm 0.6(theor) eV b.