A simplified expression for the one-loop soft-gluon current with massive fermions

2018/04/05 by M. Czakon, Czakon, Michal, Alexander Mitov +1 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.1804.02069

openalex publication_date 2018/04/05 · openalex created_date 2018/04/13 · openalex updated_date 2026/07/28

Abstract

We present a much simpler analytic expression for the UV un-renormalized one-loop soft-gluon current which controls the infra-red behavior of one-loop QCD amplitudes with massive fermions when an external gluon becomes soft. The result is given entirely in terms of standard polylogarithms, is of uniform transcendentality and is well-suited for computer implementation.

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