Anomalous dimension of the twist four gluon operator and pomeron cuts in deep inelastic scattering

E. M. Levin*, M. G. Ryskin, A. G. Shuvaev

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

The anomalous dimension of the twist four gluonic operator (γ4) in deep inelastic scattering is calculated in the double log approximation (DLA) of perturbative QCD. It turns out that at N → 1 γ4(N - 1) is close to 2γ2((N - 1)/2) where γ2 is the anomalous dimension of the leading twist operator. It means that at N → 1 the contribution of the twist four operator to the deep inelastic structure function becomes very important and gives rise to the screening correction to the deep inelastic structure function as was taken into account in the nonlinear GLR evolution equation.

Original languageEnglish
Pages (from-to)589-616
Number of pages28
JournalNuclear Physics, Section B
Volume387
Issue number3
DOIs
StatePublished - 7 Dec 1992
Externally publishedYes

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