NLO jet vertex from Lipatov's QCD effective action
Martin Hentschinski, Agustin Sabio Vera
TL;DR
This paper computes the quark-initiated forward jet vertex at next-to-leading order in QCD using Lipatov's effective action, providing a regularization method for longitudinal divergencies and validating previous results.
Contribution
It introduces a regularization scheme for longitudinal divergencies in NLO jet vertex calculations within Lipatov's effective action framework.
Findings
Agreement with previous literature results
Valid in high energy multi-Regge limit
Provides a new regularization method
Abstract
Real and virtual contributions to the quark-initiated forward jet vertex in QCD are calculated at next-to-leading logarithmic accuracy using Lipatov's effective action, valid in the high energy multi-Regge limit. A regularization of longitudinal divergencies is proposed which allows for the determination of jet observables. Agreement with previous results in the literature is found.
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