Three-loop leading top mass contributions to the ρ parameter

被引：77

作者：

van der Bij, JJ

Chetyrkin, KG ^{[1
]}

Faisst, M

Jikia, G

Seidensticker, T

机构：

[1] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

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

来源：

PHYSICS LETTERS B | 2001年 / 498卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(01)00002-8

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present analytical results for the leading contributions of the top quark to the electroweak rho parameter at order G(F)(3)M(t)(6) and G(F)(2)M(t)(4)alpha (s). The Higgs boson and the gauge bosons are taken to be massless in this limit. The correction of order G(F)(3)M(t)(6) is found to be sizeable in comparison to the the leading two-loop O(G(F)(2)M(t)(4)) correction, however it is much smaller than the kubleading O(G(F)(2)M(t)(2)M(Z)(2)) correction. (C) 2001 Published by Elsevier Science B.V.

引用

页码：156 / 162

页数：7

共 33 条

[11] 2-LOOP CORRECTIONS TO THE HEAVY TOP LIMIT IN THE RHO-PARAMETER [J].