The Quark Form Factor at Higher Orders

Details The Quark Form Factor at Higher Orders The Quark Form Factor at Higher Orders

2005-07-04

arxiv.org/abs/hep-ph/0507039v1

JHEP 0508 (2005) 049

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 1 figure, Latex

Scientific paper

10.1088/1126-6708/2005/08/049

We study the electromagnetic on-shell form factor of quarks in massless perturbative QCD. We derive the complete pole part in dimensional regularization at three loops, and extend the resummation of the form factor to the next-to-next-to-leading contributions. These results are employed to evaluate the infrared finite absolute ratio of the time-like and space-like form factors up to the fourth order in the strong coupling constant. Besides for the pole structure of higher-loop QCD amplitudes, our new contributions to the form factor are also relevant for the high-energy limit of massive gauge theories like QED. The highest-transcendentality component of our results confirms a result recently obtained in N=4 Super-Yang-Mills theory.

Affiliated with

Also associated with

No associations

Rating

The Quark Form Factor at Higher Orders does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Quark Form Factor at Higher Orders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Quark Form Factor at Higher Orders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-467463