BFKL Equation and Regge Cuts

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The BFKL equation is based on the gluon yReggeization. In the leading and next-to-leading logarithmic approximations it is derived using the pole Regge form of QCD amplitudes with gluon quantum numbers in cross-channels and negative signature. This form is violated in the next-to-next-to-leading approximation. In two and three loops the observed violation can be explained by the presence of the three-Reggeon cut. Contributions of this cut to elastic scattering amplitudes up to four loops is discussed.

Original languageEnglish
Pages (from-to)409-413
Number of pages5
JournalPhysics of Particles and Nuclei Letters
Issue number5
Publication statusPublished - 1 Sep 2019


  • BFKL equation
  • gluon Reggeization
  • Regge cuts

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