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Volume 297 - XXV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2017) - WG2 Low x and Diffraction
Violation of a simple factorized form of QCD amplitudes and Regge cuts
V. Fadin
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Pre-published on: 2017 September 22
Published on: 2018 January 16
A simple factorized form of high energy QCD amplitudes with gluon quantum numbers in the cross channels and negative signature is known to be violated in the next-to-next-to-leading logarithmic approximation (NNLLA). The violation is explained by contributions of three-Reggeon cuts. The contributions of the cuts to the elastic amplitudes and the consequent need to change the scheme of derivation of the BFKL equation in the NNLLA is discussed.
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