Qcd Corrections to Higgs Boson Decays
نویسنده
چکیده
The two–loopO(αsGFmt ) corrections to the bb̄ decay rate of the Standard Model Higgs boson as well as its production via ee → ZH will be presented. These QCD corrections are obtained by using a low-energy theorem for light Higgs bosons compared to the top quark mass. The results yield strong screening effects of the O(GFmt ) contributions. After that the two-loop QCD corrections to the γγ and gluonic decays of the Higgs bosons of the Standard Model and its minimal supersymmetric extension are discussed. While the corrections to the γγ decays remain small of O(αs) they are huge ∼ 50 – 70 % in the case of the gluonic decays.
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تاریخ انتشار 1995