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You will find all these QCD effects in the deep inelastic scattering results:
- there is a so-called scaling limit of DIS recovered by tree-level QCD which corresponds to free = non-interacting partons;
- there is a systematic way to calculate higher loops which results in scaling viaolation (confirmed experimentally);
- and there are the so-called nucleon structure functions Fn(x,Q²) which contain the non-perturbative QCD effects including sea quarks;
I think you should try to understand these structure functions plus certain sum rules which can be derived by integrating over the scaling variable x.
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