Electroweak two-loop corrections to the Mw-Mz mass correlation in the Standard Model

被引：112

作者：

Freitas, A

Hollik, W

Walter, W

Weiglein, G

机构：

[1] DESY, D-22603 Hamburg, Germany

[2] Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany

[3] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany

[4] Univ Durham, IPPP, Durham DH1 3LE, England

来源：

NUCLEAR PHYSICS B | 2002年 / 632卷 / 1-3期

关键词：

D O I：

10.1016/S0550-3213(02)00243-2

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Recently exact results for the complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model have been published [Phys. Lett. B 495 (2000) 338; Nucl. Phys. (Proc. Suppl.) 89 (2000) 82]. This paper illustrates the techniques that have been applied for this calculation, in particular, the renormalisation procedure and the treatment of IR-divergent QED contributions. Numerical results are presented in terms of simple parametrisation formulae and compared in detail with a previous result of an expansion up to next-to-leading order in the top-quark mass. An estimate of the remaining theoretical uncertainties of the M-W-prediction from unknown higher-order corrections is given. For the bosonic two-loop corrections a partial result is presented, yielding the Higgs-mass dependence of these contributions. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：189 / 218

页数：30

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