25th International Workshop on Deep Inelastic Scattering and Related Topics

Violation of a simple factorized form of QCD amplitudes and Regge cuts

5 Apr 2017, 16:20

20m

Small Lecture Theatre, Poynting Building

WG2) Low x and Diffraction WG2 Low x and Diffraction

Speaker

Prof. Victor Fadin

Description

A simple factorized form of high energy QCD amplitudes with gluon quantum numbers in the cross channels and negative signature is known to be broken in the next-to-next-to-leading logarithmic approximation (NNLLA). It is argued that the violation is caused by contributions of three-Reggeon cuts. The consequent need to change the scheme of derivation of the BFKL equation in the NNLLA is discussed.

Presentation materials

victor_fadin.pdf