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

The three-loop QCD corrections to the $ρ$ 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 $\drho = \frac{3 G_{F} M_{t}^{2}}{8 \sqrt{2} π^{2}} (1 - 2.8599 \api - 14.594 (\api)^{2})$ .

Corrections of order $O (G_{F} M_{t}^{2} \as^{2})$ to the $ρ$ parameter

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Corrections of order $O (G_{F} M_{t}^{2} \as^{2})$ to the $ρ$ parameter

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Corrections of order O(GFMt2\as2)O(GF​Mt2​\as2) to the ρρ parameter

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Corrections of order O(GFMt2\as2)O(GF​Mt2​\as2) to the ρρ parameter

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Corrections of order $O (G_{F} M_{t}^{2} \as^{2})$ to the $ρ$ parameter

讲解博客

AI智能校验

Corrections of order $O (G_{F} M_{t}^{2} \as^{2})$ to the $ρ$ parameter

讲解博客

AI智能校验