Higgs-mass dependence of two-loop corrections to Δr

被引：23
|
作者：
Bauberger, S
Weiglein, G
机构：
[1] Univ Wurzburg, Inst Theoret Phys, D-97074 Wurzburg, Germany
[2] Univ Karlsruhe, Inst Theoret Phys, D-76128 Karlsruhe, Germany
来源：
PHYSICS LETTERS B | 1998年 / 419卷 / 1-4期
关键词：
D O I：
10.1016/S0370-2693(97)01458-5
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Higgs-mass dependence of the Standard Model contributions to the correlation between the gauge-boson masses is studied at the two-loop level. Exact results are given for the Higgs-dependent two-loop corrections associated with the fermions, i.e. no expansion in the top-quark and the Higgs-boson mass is made. The results for the top quark are compared with results of an expansion up to next-to-leading order in the top-quark mass. Agreement is found within 30% of the two-loop result. The remaining theoretical uncertainties in the Higgs-mass dependence of Delta r are discussed. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：333 / 339
页数：7
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