Heavy top renormalon contribution to fermion propagators
D. Bettinelli, J. J. van der Bij
TL;DR
This paper investigates the impact of heavy top-quark renormalon contributions on fermion propagators, providing estimates of non-perturbative uncertainties and their negligible effects at the physical top-quark mass.
Contribution
It offers a detailed analysis of heavy top-quark renormalon effects on fermion propagators and evaluates their influence on the ho-parameter with different Landau-pole schemes.
Findings
Top-quark width results are provided.
Non-perturbative uncertainties are estimated.
Effects are negligible at the physical top-quark mass.
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.
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