Abstract
The standard-model Higgs boson with a mass decays almost exclusively to pairs of and bosons. We calculate the dominant two-loop corrections, of , to the partial widths of these decays. In the on-mass-shell renormalization scheme, the correction factor is found to be , where the second term is the one-loop correction. We give full analytic results for all divergent two-loop Feynman diagrams. A subset of finite two-loop vertex diagrams is computed to high precision using numerical techniques. We find agreement with a previous numerical analysis. The above correction factor is also in line with a recent lattice calculation.
- Received 24 May 1996
DOI:https://doi.org/10.1103/PhysRevD.54.4548
©1996 American Physical Society