Resummed QCD Power Corrections to Nuclear Shadowing

Details Resummed QCD Power Corrections to Nuclear Shadowing Resummed QCD Power Corrections to Nuclear Shadowing

2003-09-09

arxiv.org/abs/hep-ph/0309094v2

Phys.Rev.Lett. 93 (2004) 262301

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 3 figures, uses RevTeX 4. As published in Phys.Rev.Lett

Scientific paper

10.1103/PhysRevLett.93.262301

We calculate and resum a perturbative expansion of nuclear enhanced power corrections to the structure functions measured in deeply inelastic scattering of leptons on a nuclear target. Our results for the Bjorken $x$-, $Q^2$- and $A$-dependence of nuclear shadowing in $F_2^A(x,Q^2)$ and the nuclear modifications to $F_L^A(x,Q^2)$, obtained in terms of the QCD factorization approach, are consistent with the existing data. We demonstrate that the low-$Q^2$ behavior of these data and the measured large longitudinal structure function point to a critical role for the power corrections when compared to other theoretical approaches.

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