Singlet structure function at small x: Unitarization of gluon ladders

L. V. Gribov*, E. M. Levin, M. G. Ryskin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The singlet structure function of a deep inelastic process, D(x, q2, is studied in the double log approximation of perturbative QCD at small x and large q2. It is shown, how the increase of D at small x is screened by multiladder diagrams, so that the unitarity is not violated. The equation that sums such diagrams is written and solved, the screening effects being reduced to a specific boundary condition for the ladder equation.

Original languageEnglish
Pages (from-to)555-576
Number of pages22
JournalNuclear Physics, Section B
Issue number3
StatePublished - 5 Oct 1981
Externally publishedYes


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