Abstract
We calculate the shadowing of sea quarks and gluons and show that the shadowing of gluons is not simply given by the sea quark shadowing, especially at small x. The calculations are done in the lab frame approach by using the generalized vector meson dominance model. Here the virtual photon turns into a hadronic fluctuation long before the nucleus. The subsequent coherent interaction with more than one nucleon in the nucleus leads to the depletion σ(γ ∗A)<Aσ(γ ∗N) known as shadowing. A comparison of the shadowing of quarks to E665 data for 40 Ca and 207 Pb shows good agreement.
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