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- Title
Region analysis of QED massive fermion form factor.
- Authors
ter Hoeve, Jaco; Laenen, Eric; Marinissen, Coenraad; Vernazza, Leonardo; Wang, Guoxing
- Abstract
We perform an analysis of the one- and two-loop massive quark form factor in QED in a region expansion, up to next-to-leading power in the quark mass. This yields an extensive set of regional integrals, categorized into three topologies, against which factorization theorems at next-to-leading power could be tested. Our analysis reveals a number of subtle aspects involving rapidity regulators, as well as additional regions that manifest themselves only beyond one loop, at the level of single diagrams, but which cancel in the form factor.
- Subjects
QUARKS; RENORMALIZATION group; FACTORIZATION; FERMIONS
- Publication
Journal of High Energy Physics, 2024, Vol 2024, Issue 2, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP02(2024)024