Effective QCD coupling and power corrections to photon-photon scattering
High Energy Physics - Phenomenology
2009-10-30 v1
Abstract
The scattering of two off-shell photons is an infrared-safe process in QCD. For photon virtualities in the range of a few GeV, accessible at LEPII, power-behaved contributions to the total cross section may become non-negligible. Based on a dispersion relation for the running coupling, we discuss these contributions and calculate the coefficients of the leading power correction for transversely polarized and longitudinally polarized virtual photons.
Cite
@article{arxiv.hep-ph/9710256,
title = {Effective QCD coupling and power corrections to photon-photon scattering},
author = {F. Hautmann},
journal= {arXiv preprint arXiv:hep-ph/9710256},
year = {2009}
}
Comments
9 pages, 2 figures, Latex