Dependence of Electroweak Parameters on the Definition of the Top-Quark Mass

Details Dependence of Electroweak Parameters on the Definition of the Top-Quark Mass Dependence of Electroweak Parameters on the Definition of the Top-Quark Mass

1994-03-29

arxiv.org/abs/hep-ph/9403386v2

Z.Phys. C72 (1996) 437-447

Physics

High Energy Physics

High Energy Physics - Phenomenology

27 pages (Latex), 6 figures (uuencoded compressed tarred Postscript). Extended and updated version, which incorporates the rec

Scientific paper

The QCD corrections to electroweak parameters depend on the renormalization scheme and scales used to define the top-quark mass. We analyze these dependences for the W-boson mass predicted via Delta r to O(alpha alpha_s) and O(alpha alpha_s^2) in the on-shell and MS-bar schemes. These variations provide us with a hint on the magnitude of the unknown higher-order QCD effects and contribute to the theoretical error of the prediction.

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