RADIATIVE-CORRECTIONS FOR H-]W+W-(GAMMA) IN THE STANDARD MODEL

被引：75

作者：

KNIEHL, BA

机构：

[1] Department of Physics, University of Wisconsin, Madison

来源：

NUCLEAR PHYSICS B | 1991年 / 357卷 / 2-3期

关键词：

D O I：

10.1016/0550-3213(91)90476-E

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：

The HW+W- three-point function with all external particles being off-mass-shell is calculated in the one-loop approximation of the minimal standard model of electroweak interactions. The effect of radiative corrections on the Higgs-boson decay mode H --> W+W- (gamma) is examined. The soft-photon bremsstrahlung is resummed using Yennie-Frautschi-Suura exponentiation and the hard-photon spectrum is integrated analytically. The impact of a fourth generation of heavy fermions is investigated. Approximation formulae are presented for the light-fermion contribution and for the case that the Higgs boson is heavy as compared to the weak vector bosons. In the modified on-mass-shell scheme the partial decay width may be enhanced by up to 15% if the masses of both the Higgs boson and the top quark assume values close to their theoretical upper bounds.

引用

页码：439 / 466

页数：28

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