2021/11/30 by Ze Long Liu, Matthias Neubert, Marvin Schnubel +1
Physics and Astronomy · #Black Holes and Theoretical Physics #Factorization #Gluon #Higgs boson #Jet (fluid) #Momentum (technical analysis) #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quark #Radiative transfer #hep-ph #hep-th
paper · pdf · doi:10.1007/jhep02(2022)075
16 pages, 4 figures
arxiv created 2021/11/30 · openalex publication_date 2022/02/01 · arxiv updated 2022/03/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
Factorization theorems in soft-collinear effective theory at subleading order in power counting involve ``radiative jet functions'', defined in terms of matrix elements of collinear fields with a soft momentum emitted from inside the jet. Of particular importance are the radiative quark jet functions with an external photon or gluon, which arise e.g. in the factorization theorems for the Higgs-boson amplitudes h→γγ, h→ gg and gg→ h induced by light-quark loops. While the photon case has been studied extensively in previous work, we present here a detailed study of the radiative jet function with an external gluon. We calculate this jet function at one- and two-loop order, derive its one-loop anomalous dimension and study its renormalization-group evolution.