Analyticity, renormalization, and evolution of the soft-quark function

We compute the renormalization and evolution of the soft-quark function that appears in the factorization theorem for Higgs-boson decays to two photons through a \(b\)-quark loop. Our computation confirms a conjecture by Liu, Mecaj, Neubert, Wang, and Fleming for the form of the renormalization and...

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Bibliographic Details
Published inarXiv.org
Main Authors Bodwin, Geoffrey T, June-Haak Ee, Lee, Jungil, Xiang-Peng, Wang
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 07.05.2021
Subjects
Evolution
Higgs bosons
Perturbation theory
Physics - High Energy Physics - Phenomenology
Quarks
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Summary:We compute the renormalization and evolution of the soft-quark function that appears in the factorization theorem for Higgs-boson decays to two photons through a \(b\)-quark loop. Our computation confirms a conjecture by Liu, Mecaj, Neubert, Wang, and Fleming for the form of the renormalization and evolution of the soft-quark function in order \(\alpha_s\). We also work out the analyticity structure of the soft-quark function by making use of light-cone perturbation theory.
ISSN:2331-8422
DOI:10.48550/arxiv.2101.04872