# Differences

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 — preprints:1995:ttp95-03 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP95-03 QCD Corrections to the rho Parameter ====== + + + 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 + $\drho=\frac{3G_F M_t^2}{8\sqrt{2}\pi^2}(1- 2.8599\, \api + - 14.594\, (\api)^2 )$. + + |**K.G. Chetyrkin, J.H. Kuehn, M. Steinhauser**  | + |** Phys. Lett. B351 331--338 1995  **  | + | {{preprints:1995:ttp95-03.pdf|PDF}} {{preprints:1995:ttp95-03.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9502291|arXiv]]   | + | |