NLO corrections to the gluon induced forward jet vertex from the high energy effective action

TL;DR

This paper calculates next-to-leading order corrections to the gluon-induced forward jet vertex using Lipatov's high energy effective action, confirming previous results and advancing precision in high-energy QCD predictions.

Contribution

It provides the first complete NLO correction calculation for the gluon-induced forward jet vertex within Lipatov's framework, using a consistent regularization and subtraction scheme.

Findings

Agreement with previous literature results

Validated the regularization and subtraction formalism

Enhanced the precision of forward jet vertex calculations

Abstract

We determine both real and virtual next-to-leading order corrections to the gluon induced forward jet vertex, from the high energy effective action proposed by Lipatov. For these calculations we employ the same regularization and subtraction formalism developed in our previous work on the quark-initiated vertex. We find agreement with previous results in the literature.