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The experimental landscape for the 7Be+p radiative capture reaction israpidly changing as new high precision data become available. We present anevaluation of existing data, detailing the treatment of systematic errors anddiscrepancies, and show how they constrain the astrophysical S factor (S17),independent of any nuclear structure model. With theoretical models robustlydetermining the behavior of the sub-threshold pole, the extrapolation error canbe reduced and a constraint placed on the slope of S17. Using only radiativecapture data, we find S17(0) = 20.7 +/- 0.6 (stat) +/- 1.0 (syst) eV b if datasets are completely independent, while if data sets are completely correlatedwe find S17(0) = 21.4 +/- 0.5 (stat) +/- 1.4 (syst) eV b. The truth likely liessomewhere in between these two limits. Although we employ a formalism capableof treating discrepant data, we note that the central value of the S factor isdominated by the recent high precision data of Junghans et al., which imply asubstantially higher value than other radiative capture and indirectmeasurements. Therefore we conclude that further progress will require new highprecision data with a detailed error budget.Comment: 10 pages, 1 figure published versio

physical review. c. nuclear physics/physical review. c, nuclear physics

Determination of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi>S</mml:mi><mml:mrow><mml:mn>17</mml:mn></mml:mrow></mml:msub><mml:mrow><mml:mo>(</mml:mo><mml:mn>0</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math>from published data

Determination ofS17(0)from published data