Heavy top renormalon contribution to fermion propagators
Autor: | Bettinelli, D., van der Bij, J. J. |
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Rok vydání: | 2012 |
Předmět: | |
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 |
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