This article is cited in 1 paper

FIELDS, PARTICLES, AND NUCLEI

Higher-order contributions to qcd amplitudes in regge kinematics (scientific summary)

V. S. Fadin<sup>ab

a</sup> Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
^b Novosibirsk State University, Novosibirsk, 630090 Russia

Abstract: The famous Balitsky-Fadin-Kuraev-Lipatov (BFKL) equation was derived using the hypothesis that amplitudes of non-abelian gauge theories with the adjoint representation of the gauge group in cross-channels are given by the Reggeized gauge boson contributions. The hypothesis is true in the leading logarithmic approximation, wherein the equation was originally derived, and in the next-to-leading one. However, in the next-to-next-to-leading logarithmic approximation this is not so, since in this approximation the Regge cuts begin to contribute. Calculations of their contributions to elastic scattering amplitudes in quantum chromodynamics and their role in derivation of the BFKL equation are discussed.

Received: 13.11.2019
Revised: 13.11.2019
Accepted: 14.11.2019

DOI: 10.31857/S0370274X20010014

 English version: Journal of Experimental and Theoretical Physics Letters, 2020, 111:1, 1–7

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