Title
High energy behavior of quark elastic form factors within the Wilson integral approach: perturbative and nonperturbative contributionsHigh energy behavior of quark elastic form factors within the Wilson integral approach: perturbative and nonperturbative contributions
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Subject
Physics
Source (journal)
arXiv
Volume/pages
(2004), p. 1-4
1
Carrier
E-only publicatie
Target language
English (eng)
Abstract
The Wilson contour integral approach is applied to resum the soft gluon radiative correctins to the quark form factors in the Sudakov regime. The one-loop order results for the quark-photon (color singlet form factor) and quark-gluon (color non-singlet form factor) vertices are presented. The explicit expressions for the vacuum averaged contour integrals in g2 accuracy are derived for an arbitrary gauge field. The corresponding one-loop cusp anomalous dimensions are found in the case of perturbative gluon field in arbitrary covariant gauge. It is shown that the gauge dependence drops out from the leading high energy behavior.
E-info
https://repository.uantwerpen.be/docman/iruaauth/f766c2/0b79f4acbb8.pdf