Re-evaluation of the Gottfried sum using neural networks
Riccardo Abbate, Stefano Forte
Abstract
We provide a determination of the Gottfried sum from all available data, based on a neural network parametrization of the nonsinglet structure function F2. We find SG=0.244 +- 0.045, closer to the quark model expectation SG=1/3 than previous results. We show that the uncertainty from the small x region is somewhat underestimated in previous determinations.
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