Heavy top renormalon contribution to fermion propagators
High Energy Physics - Phenomenology
2012-08-29 v2 High Energy Physics - Theory
Abstract
We study resummed perturbative contributions due to a heavy top-quark. These renormalon contributions are evaluated for fermion propagators. Results for the top-quark width are given. Estimates of non-perturbative uncertainties are made on the \rho-parameter using different schemes of dealing with the Landau-pole. For the physical top-quark mass the effects are negligible.
Cite
@article{arxiv.1206.0176,
title = {Heavy top renormalon contribution to fermion propagators},
author = {D. Bettinelli and J. J. van der Bij},
journal= {arXiv preprint arXiv:1206.0176},
year = {2012}
}
Comments
30 pages, 14 figures, 1 table; v2: Ref.19 added, typos corrected, final version published in PRD