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Perturbative generation of a strange-quark asymmetry in the nucleon
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Perturbative generation of a strange-quark asymmetry in the nucleon
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We point out that perturbative evolution in QCD at three loops generates a strange-antistrange asymmetry s(x)-sbar(x) in the nucleon's sea just from the fact that the nucleon has non-vanishing up and down quark valence densities. The recently computed three-loop splitting functions allow for an estimate of this effect. We find that a fairly sizable asymmetry may be generated. Results for analogous asymmetries in the heavy-quark sector are also presented.
Forward citations
Cited by 1 Pith paper
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Impact of parity-violating deep-inelastic scattering on the weak mixing angle and high-$x$ parton distributions
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