Heavy Quark Current Correlators to O(\alpha_s^2)
High Energy Physics - Phenomenology
2010-04-06 v1
Abstract
In this paper the three-loop polarization functions \Pi(q^2) are calculated for the cases of an external vector, axial-vector, scalar or pseudo-scalar current. Results are presented for the imaginary part which directly leads to the cross section and to the Higgs decay rates, respectively.
Cite
@article{arxiv.hep-ph/9705254,
title = {Heavy Quark Current Correlators to O(\alpha_s^2)},
author = {K. G. Chetyrkin and J. H. Kühn and M. Steinhauser},
journal= {arXiv preprint arXiv:hep-ph/9705254},
year = {2010}
}
Comments
Latex, 38 pages, 44 ps-figures. The complete paper, including figures, is also available via anonymous ftp at ftp://ttpux2.physik.uni-karlsruhe.de/ , or via www at http://www-ttp.physik.uni-karlsruhe.de/cgi-bin/preprints/