Heavy top renormalon contribution to fermion propagators

Autor:	Bettinelli, D., van der Bij, J. J.
Rok vydání:	2012
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Theory
Zdroj:	Phys.Rev. D86 (2012) 045018
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.86.045018
Popis:	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. Comment: 30 pages, 14 figures, 1 table; v2: Ref.19 added, typos corrected, final version published in PRD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1206.0176 Zobrazit plný text záznamu View this record from Arxiv