Nuclear enhanced power corrections to DIS structure functions

Details Nuclear enhanced power corrections to DIS structure functions Nuclear enhanced power corrections to DIS structure functions

2001-10-03

arxiv.org/abs/hep-ph/0110038v1

Phys.Lett. B523 (2001) 88

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 10 pages including 3 figures

Scientific paper

10.1016/S0370-2693(01)01338-7

We calculate nuclear enhanced power corrections to structure functions measured in deeply inelastic lepton-nucleus scattering in Quantum Chromodynamics (QCD). We find that the nuclear medium enhanced power corrections at order of $O(\alpha_s/Q^2)$ enhance the longitudinal structure function $F_L$, and suppress the transverse structure function $F_1$. We demonstrate that strong nuclear effects in $\sigma_A/\sigma_D$ and $R_A/R_D$, recently observed by HERMES Collaboration, can be explained in terms of the nuclear enhanced power corrections.

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