Corrections of O $(alpha-s^{2)}$ to the decay of an intermediate mass Higgs boson into two photons - INSPIRE

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Corrections of O $(alpha-s^{2)}$ to the decay of an intermediate mass Higgs boson into two photons

Matthias Steinhauser
(
- Munich, Max Planck Inst.
)

Dec, 1996

9 pages

Part of The Higgs puzzle - what can we learn from LEP-2, LHC, NLC and FMC? Proceedings, Ringberg Workshop, Tegernsee, Germany, December 8-13, 1996, 177-185

Contribution to:

Ringberg Workshop: The Higgs Puzzle - What can We Learn from LEP2, LHC, NLC, and FMC?, 177-185

e-Print:

hep-ph/9612395 [hep-ph]

Report number:

MPI-PHT-96-130

View in:

ADS Abstract Service

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Abstract:

The QCD correction of

O(\alpha_s~2)

to the decay of the Standard Model Higgs boson into two photons is presented. We consider the contribution coming from diagrams with a heavy top quark as virtual particle. The first three terms of the expansion in the inverse top mass is calculated. Expressing the result through the on-shell top mass M_t, we find large coefficients for the power-suppressed terms whereas in the

\overline{MS}

scheme the coefficients are tiny.

talk: Tegernsee 1996/12/08
Salam-Weinberg model
Higgs particle: radiative decay
Higgs particle: width
quantum chromodynamics: correction
Feynman graph: higher-order
Feynman graph: tadpole
quark: truth
mass: truth
numerical calculations

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