Results for Precision Observables in the Electroweak Standard Model at Two-Loop Order and Beyond

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dc.creatorWeiglein, G.
dc.date1998-07-02
dc.date.accessioned2026-07-07T04:04:13Z
dc.date.available2026-07-07T04:04:13Z
dc.descriptionHigher-order contributions to the precision observables Δr, \sin^2θ_eff and Γ_l are discussed. The Higgs-mass dependence of the observables is investigated at the two-loop level, and exact results are derived for the Higgs-dependent two-loop corrections associated with fermions. The top-quark corrections are compared with the results obtained by an expansion in the top-quark mass up to next-to-leading order. For the pure fermion-loop contributions to Δr results up to four-loop order are derived. They allow to investigate the validity of the commonly used resummation of the leading fermionic contributions to Δr.
dc.description8 pages, 2 figures, presented at the Zeuthen Workshop on Elementary Particle Physics, "Loops and Legs in Gauge Theories", Rheinsberg, April 19-24, 1998, to appear in Acta Phys Pol
dc.identifierhttps://arxiv.org/abs/hep-ph/9807222
dc.identifierhttp://arxiv.org/abs/hep-ph/9807222
dc.identifierActa Phys.Polon. B29 (1998) 2735-2741
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/47998
dc.subjectHigh Energy Physics - Phenomenology
dc.titleResults for Precision Observables in the Electroweak Standard Model at Two-Loop Order and Beyond
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