Resummed QCD power corrections to nuclear shadowing.
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, Q2 and A dependence of nuclear shadowing in F2A(x,Q2) and the nuclear modification to FAL(x,Q2), obtained in terms of the QCD factorization approach, are consistent with the existing data. We demonstrate that the low Q2 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.
Qiu
Jianwei
J
Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA.
Vitev
Ivan
I