Corrections of order ${\cal O}(G_F M_t^2 \as^2)$ to the $ρ$ parameter

Details Corrections of order ${\cal O}(G_F M_t^2 \as^2)$ to the $ρ$ parameter Corrections of order ${\cal O}(G_F M_t^2 \as^2)$ to the $ρ$ parameter

1995-02-13

arxiv.org/abs/hep-ph/9502291v2

Phys.Lett. B351 (1995) 331-338

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Latex, 1 figure contained in a separate file The complete paper, including figures, is also available at (129.13.102

Scientific paper

10.1016/0370-2693(95)00380-4

The three-loop QCD corrections to the $\rho$ parameter from top and bottom
quark loops are calculated. The result differs from the one recently calculated
by Avdeev et al. As function of the pole mass the numerical value is given by
$\drho=\frac{3G_F M_t^2}{8\sqrt{2}\pi^2}(1- 2.8599 \api - 14.594 (\api)^2 )$.

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