Nuclear shadowing and the EMC effect

Leonid Frankfurt, Mark Strikman, Simonetta Liuti

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Current calculations of nuclear shadowing for parton distributions are reviewed. The analysis of μA data is performed using exact QCD sum rules for the total momentum and baryon charge of nuclei. Evidence is found for an overall enhancement of Ga in nuclei (> 4% for A > 1). Combined with the calculation of nuclear shadowing at small χ ~ our analysis indicates an enhancement of valence quark and gluon fields in nuclei for χ ~ 0.1 of about 10 (20)% for A = 40 (A = ∞), as well as a suppression of the sea, at least for χ < 0.1 and of valence quarks at χ < 0.02. It is also pointed out that due to scaling violations the small shadowing observed in the Drell-Yan data at χ = 0.04 and 〈Q2〉 ~ 25 GeV2 corresponds to much larger shadowing for the sea in the Q2 range probed by NMC. Implications for disentangling the origin of nuclear forces are also discussed.

Original languageEnglish (US)
Pages (from-to)571-574
Number of pages4
JournalNuclear Physics, Section A
Volume527
Issue numberC
DOIs
StatePublished - Jan 1 1991

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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