Second Order QCD Corrections to the Top Decay Rate
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We report on a recent calculation of the top decay rate up to order \alpha_s^2. It is based on asymptotic expansions of the off-shell top propagator, followed by a Pad\'e approximation in order to reach the physically relevant point q^2=Mt^2.
Cite
@article{arxiv.hep-ph/9910339,
title = {Second Order QCD Corrections to the Top Decay Rate},
author = {K. G. Chetyrkin and R. Harlander and T. Seidensticker and M. Steinhauser},
journal= {arXiv preprint arXiv:hep-ph/9910339},
year = {2007}
}
Comments
Latex, 3+2 pages, 4 figures included as ps-files. Talk presented by R.H. at the International Europhysics Conference on High Energy Physics (EPS-HEP99), Tampere, Finland, July 15-21, 1999. The paper, with figures, is also available via anonymous ftp at ftp://ttpux2.physik.uni-karlsruhe.de/ttp99/ttp99-41/ or via www at http://www-ttp.physik.uni-karlsruhe.de/Preprints/