The Hbb vertex at four loops and hard matching coefficients in SCET for various currents

2022/04/05 by Amlan Chakraborty, Chakraborty, Amlan, Tobias Huber +13
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.2204.02422

openalex publication_date 2022/04/05 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28

Abstract

We compute the four-loop corrections to the Higgs-bottom vertex within massless QCD and present analytic results for all color structures. The infrared poles of the renormalized form factor agree with the predicted four-loop pattern. Furthermore, we use the results for the Higgs-bottom, photon-quark, and Higgs-gluon form factors to provide hard matching coefficients in soft-collinear effective theory up to four-loop accuracy.

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