Higgs Decay to Top Quarks at O(α_s^2)

Details Higgs Decay to Top Quarks at O(α_s^2) Higgs Decay to Top Quarks at O(α_s^2)

1997-04-29

arxiv.org/abs/hep-ph/9704436v1

Phys.Rev. D56 (1997) 3980-3990

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 20 pages, 14 ps-figures. The complete paper, including figures, is also available via anonymous ftp at ftp://ttpux2.p

Scientific paper

10.1103/PhysRevD.56.3980

Three-loop corrections to the scalar and pseudo-scalar current correlator are calculated. By applying the large momentum expansion mass terms up to order (m^2/q^2)^4 are evaluated analytically. As an application O(\alpha_s^2) corrections to the decay of a scalar and pseudo-scalar Higgs boson into top quarks are considered. It is shown that for a Higgs mass not far above the $t\bar{t}$ threshold these higher order mass corrections are necessary to get reliable results.

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