Regge cuts and NNLLA BFKL

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In the leading and next-to-leading logarithmic approximations, QCD amplitudes with gluon quantum numbers in cross-channels and negative signature have the pole form corresponding to a reggeized gluon. The famous BFKL equation was derived using this form. In the next-tonext- to-leading approximation (NNLLA), the pole form is violated by contributions of Regge cuts. We discuss these contributions and their impact on the derivation of the BFKL equation in the NNLLA.

Original languageEnglish
Pages (from-to)678-682
Number of pages5
JournalUkrainian Journal of Physics
Issue number8
Publication statusPublished - 1 Jan 2019


  • BFKL equation
  • Gluon reggeization
  • Regge cuts

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