Q**2 dependence of nuclear shadowing
作者： W. Melnitchouk , A. W. Thomas
关键词: Momentum transfer 、 Proton 、 Nuclear physics 、 Scattering 、 Physics 、 Particle physics 、 Deep inelastic scattering 、 Twist 、 Deuterium 、 Pomeron 、 Vector meson dominance
摘要: We reexamine the predictions of a two-phase model shadowing in nuclear deep-inelastic scattering light new NMC data on x, A, and ${\mathit{Q}}^{2}$ dependence ratios structure functions. The model, which combines vector meson dominance at low with diffractive Pomeron exchange for large ${\mathit{Q}}^{2}$, agrees observed small, but nonzero, slopes log${\mathit{Q}}^{2}$, indicate importance higher twist effects transition region, 0.1\ensuremath{\lesssim}${\mathit{Q}}^{2}$\ensuremath{\lesssim}1 ${\mathrm{GeV}}^{2}$. note also that latest E665 deuteron to proton ratio suggests presence small amount deuteron.
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128.84.21.199参考文章(44)
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