Electroweak Parameters in the $\bar{MS}$-Scheme

Details Electroweak Parameters in the $\bar{MS}$-Scheme Electroweak Parameters in the $\bar{MS}$-Scheme

1996-07-04

arxiv.org/abs/hep-ph/9607240v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages of Latex + 6 Postscript files of figures

Scientific paper

We study electroweak parameters sensitive to the radiative corrections, such as $\rho$-ratio and $\hff$ decay rates in the $\ms$-scheme in the heavy $t$-quark mass limit $m_{t} \gg m_{w}$. In $\ms$-scheme the two-loop electroweak corrections $\sim m_{t}^{4}$ dominate over the QCD corrections $\sim \as m_{t}^{2}$ in the $\rho$-ratio. The relation between the on-shell coupling constants and $\ms$-parameters is found to be rather sensitive to the Higgs boson mass.

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