Two-loop electroweak correction of O(GFMt2) to the Higgs-boson decay into photons

被引：25

作者：

Fugel, F ^{[1
]}

Kniehl, BA ^{[1
]}

Steinhauser, M ^{[1
]}

机构：

[1] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg, Germany

来源：

NUCLEAR PHYSICS B | 2004年 / 702卷 / 1-2期

关键词：

D O I：

10.1016/j.nuclphysb.2004.09.018

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：

We compute the dominant two-loop electroweak correction, of O(G(F)M(t)(2)), to the partial width of the decay of an intermediate-mass Higgs boson into a pair of photons. We use the asymptotic-expansion technique in order to extract the leading dependence on the top-quark mass plus four expansion terms that describe the dependence on the W- and Higgs-boson masses. This correction reduces the Born result by approximately 2.5%. As a by-product of our analysis, we also recover the O(G(F)M(t)(2)) correction to the partial width of the Higgs-boson decay to two gluon jets. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：333 / 345

页数：13

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