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Gluon versus sea quark shadowing

1998/11/04 by N. Hammon, H. Stöcker, Walter Greiner +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0370-2693(99)00059-3

published as Phys.Lett. B448 (1999) 290-294 · 9 pages, 3 eps figures

arxiv created 1998/11/04 · openalex publication_date 1999/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We calculate the shadowing of sea quarks and gluons and show that the shadowing of gluons is \it 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 40Ca and 207Pb shows good agreement.

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