Two--loop heavy Higgs corrections to the Higgs fermionic width

Details Two--loop heavy Higgs corrections to the Higgs fermionic width Two--loop heavy Higgs corrections to the Higgs fermionic width

1994-05-27

arxiv.org/abs/hep-ph/9405394v1

Phys.Lett. B337 (1994) 137-140; Erratum-ibid. B346 (1995) 426

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, Freiburg--THEP 94/08

Scientific paper

10.1016/0370-2693(94)91457-5

We calculate the two--loop electroweak corrections to the fermionic decay width of the Higgs boson at leading order in $m_{H}$. The sum of one--loop and two--loop radiative corrections turns out to be at 6% level over the whole range of $m_{H}$ where the perturbation theory is supposed to be a sensible approximation. We show that the perturbative approach breaks down at $m_{H} \sim$ 1.4 TeV, and address the question of its relevance beyond this limit.

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