1 v 1 1 6 A ug 1 99 5 ADP - 95 - 31 / T 185 TUM / T 39 - 95 - 8 Q 2 Dependence of Nuclear Shadowing
نویسندگان
چکیده
We reexamine 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.
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