TY - JOUR
T1 - Region analysis of QED massive fermion form factor
AU - ter Hoeve, Jaco
AU - Laenen, Eric
AU - Marinissen, Coenraad
AU - Vernazza, Leonardo
AU - Wang, Guoxing
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/2
Y1 - 2024/2
N2 - 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.
AB - 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.
KW - Factorization
KW - Higher-Order Perturbative Calculations
KW - Renormalization Group
UR - http://www.scopus.com/inward/record.url?scp=85184405171&partnerID=8YFLogxK
U2 - 10.1007/JHEP02(2024)024
DO - 10.1007/JHEP02(2024)024
M3 - Article
AN - SCOPUS:85184405171
SN - 1126-6708
VL - 2024
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 2
M1 - 24
ER -