Partonic picture of nuclear shadowing at small x

Zheng Huang, Hung Jung Lu, Ina Sarcevic

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

We investigate the nuclear shadowing mechanism in the context of perturbative QCD and the Glauber-Gribov multiple scattering model. Using recent HERA data on nucleon structure function at small x, we put stringent constrains on the nucleon gluon density in the double-logarithm approximation. We suggest that the scaling violation of the nucleon structure function in the region of small-x and semihard scale Q2 can be reliably described by perturbative QCD which is a central key to the understanding of the scale dependence of the nuclear shadowing effect. Our results indicate that while the shadowing of the quark density arises from an interplay between "soft" and semihard QCD processes, while gluon shadowing is largely driven by a perturbative shadowing mechanism. We demonstrate that the gluon shadowing is a robust phenomenon at large Q2 and can be unambiguously predicted by perturbative QCD.

Original languageEnglish (US)
Pages (from-to)79-106
Number of pages28
JournalNuclear Physics A
Volume637
Issue number1
DOIs
StatePublished - Jul 13 1998

Keywords

  • Nuclei
  • Partons

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Fingerprint Dive into the research topics of 'Partonic picture of nuclear shadowing at small x'. Together they form a unique fingerprint.

  • Cite this