Nuclear modification in the structure function F₃

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Nuclear shadowing in the structure function F₃ is investigated as a possible test of shadowing models. The F₃ shadowing is studied in two different theoretical models: a parton-recombination model with Q² rescaling and an aligned-jet model. We find that predictions in these models differ completely in the small x region. It suggests that the F₃ shadowing could be used for discriminating among different models, which produce similar shadowing behavior in the structure function F₂.