Peculiarities of Regge cuts in QCD

TL;DR

This paper discusses the unique features of Regge cuts in QCD, highlighting how Reggeized gluon exchanges differ from classical Reggeons and affect the formation of cuts in the complex angular momentum plane.

Contribution

It provides an analysis of the peculiarities of Regge cuts in QCD, emphasizing the differences from classical Regge theory due to Reggeized gluons.

Findings

Regge cuts in QCD are generated by exchanges of Reggeized gluons.

These cuts exhibit properties that differ significantly from classical Regge poles.

The paper discusses the implications of these differences for the formation of cuts.

Abstract

As is known from the classical theory of complex angular momenta, along with the Regge poles in the complex $j$ - plane should be cuts that are generated by the poles. In QCD, the cuts are generated by exchanges of the Reggeized gluons, whose properties are strikingly different from the properties of Reggeons in classical theory, which leads to peculiarities of the formation of the cuts. The talk is devoted to the discussion of these peculiarities.