Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-11-29
Phys.Lett. B498 (2001) 156-162
Physics
High Energy Physics
High Energy Physics - Phenomenology
10 pages, 2 figures, Latex. v2: two minor corrections in the references. Accepted for publication in Phys. lett. B. The comple
Scientific paper
10.1016/S0370-2693(01)00002-8
We present analytical results for the leading contributions of the top quark to the electroweak rho parameter at order GF^3 Mt^6 and GF^2 Mt^4 alpha_s. The Higgs boson and the gauge bosons are taken to be massless in this limit. The correction of order GF^3 Mt^6 is found to be sizeable in comparison to the the leading two-loop GF^2 Mt^4 correction, however it is much smaller than the subleading GF^2 Mt^2 MZ^2 correction.
Chetyrkin K. G.
der Bij J. van J.
Faisst M.
Jikia George
Seidensticker Th.
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