Soft gluon resummation in the quark-vector boson vertex at high energy: On-mass-shell case
High Energy Physics - Phenomenology
2007-05-23 v3 High Energy Physics - Theory
Nuclear Theory
Abstract
Resummation of the soft gluon radiative corrections for the quark-vector boson vertex is performed within the path-integral (world-line) approach. The leading order expression for the vacuum averaged Wilson integral for an arbitrary gauge field is found in n-dimensional space-time. The cusp anomalous dimension of the color non-singlet Sudakov form factor of on-mass-shell quark is calculated in an arbitrary covariant gauge in the one-loop order, and the leading double-logarithmic asymptotical behavior is obtained from the corresponding evolution equation.
Keywords
Cite
@article{arxiv.hep-ph/0312258,
title = {Soft gluon resummation in the quark-vector boson vertex at high energy: On-mass-shell case},
author = {Igor O. Cherednikov},
journal= {arXiv preprint arXiv:hep-ph/0312258},
year = {2007}
}
Comments
Many changes and additions in the text, the main results unchanged. Accepted to EPJA; title changed in the journal version. 6pp, EPJA style