Q**2 Dependence of Nuclear Shadowing
High Energy Physics - Phenomenology
2008-11-26 v1 Nuclear Theory
Abstract
We re-examine the predictions of a two-phase model of shadowing in nuclear deep-inelastic scattering in light of new NMC data on the x, A and Q**2 dependence of the ratios of structure functions. The model, which combines vector meson dominance at low Q**2 with diffractive Pomeron exchange for large Q**2, agrees with the observed small, but non-zero, slopes in log Q**2, which indicate the importance of higher twist shadowing effects in the transition region, 0.1 < Q**2 < 1 GeV**2. We note also that the latest E665 data on the deuteron to proton ratio suggests the presence of a small amount of shadowing in the deuteron.
Cite
@article{arxiv.hep-ph/9508311,
title = {Q**2 Dependence of Nuclear Shadowing},
author = {W. Melnitchouk and A. W. Thomas},
journal= {arXiv preprint arXiv:hep-ph/9508311},
year = {2008}
}
Comments
17 pages REVTeX, 5 uuencoded figures, accepted for publication in Phys. Rev. C