Complete fermionic two-loop results for the Mw-MZ interdependence

被引：117

作者：

Freitas, A

Hollik, W

Walter, W

Weiglein, G ^{[1
]}

机构：

[1] CERN, Div TH, CH-1211 Geneva 23, Switzerland

[2] DESY, D-22603 Hamburg, Germany

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

来源：

PHYSICS LETTERS B | 2000年 / 495卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(00)01263-6

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The complete fermionic two-loop contributions to the prediction for the W-boson mass from muon decay in the electroweak Standard Model are evaluated exactly, i.e., no expansion in the top-quark and the Higgs-boson mass is made. The result for the W-boson mass is compared with the previous result of an expansion up to next-to-leading order in the top-quark mass. The predictions are found to agree with each other within about 4 MeV. A simple parametrization of the new result is presented, approximating the full result to better than 0.4 MeV for M-H less than or equal to 1 TeV. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：338 / 346

页数：9

共 79 条

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