Effective vertex of quark production in collision of Reggeized quark and gluon

TL;DR

This paper calculates the NLO effective vertex for quark production in Reggeized quark-gluon collisions, advancing the bootstrap approach to quark Reggeization proof within the next-to-leading logarithmic approximation.

Contribution

It introduces the missing NLO effective vertex for quark production, enabling progress in the bootstrap proof of quark Reggeization.

Findings

Derived the NLO effective vertex for quark production.

Facilitated the bootstrap approach to quark Reggeization.

Enhanced understanding of multi-Regge amplitudes in QCD.

Abstract

We calculated the effective vertex of the quark production in the collision of Reggeized quark and Reggeized gluon in the next-to-leading order (NLO). The vertex in question is the missing component of the multi-Regge NLO amplitudes with the quark and gluon exchanges in $t_i$ channels. The calculation allows us to develop the bootstrap approach to the quark Reggeization proof within next-to-leading logarithmic approximation.