A review summarizing experimental evidence, theoretical models of nuclear shadowing, model-agnostic nuclear PDF extractions, and prospects for LHC and EIC studies.
Perturbative Gluon Shadowing in Heavy Nuclei
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abstract
We study how much gluon shadowing can be perturbatively generated through the modified QCD evolution in heavy nuclei. The evolution of small-$x$ gluons is investigated within the semiclassical approximation. The method of characteristics is used to evaluate the shadowed distributions in low-$Q$ and small-$x$ region. In solving the modified evolution equation, we model in simultaneously fusions from independent constituents and from the same constituent, both in a proton and in a large loosely bound nucleus of $A\sim 200$. In addition to the actual distributions at small $x$, we study the ratios of the distributions at an initial scale $Q_0 = 2$ GeV, and show that a strong nuclear shadowing can follow from the modified QCD evolution.
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2026 1verdicts
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Nuclear parton distributions and nuclear shadowing
A review summarizing experimental evidence, theoretical models of nuclear shadowing, model-agnostic nuclear PDF extractions, and prospects for LHC and EIC studies.