====== TTP00-26 Three-Loop Leading Top Mass Contributions to the rho Parameter ======
 
 
   <hidden TTP00-26  Three-Loop Leading Top Mass Contributions to the rho Parameter > 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. 
 </hidden>
|**J.J. van der Bij, K.G. Chetyrkin, M. Faisst,  G. Jikia and T. Seidensticker**  | 
|**  Phys.Lett.  B498 156-162 2001  **  |
| {{preprints:2000:ttp00-26.pdf|PDF}} {{preprints:2000:ttp00-26.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0011373|arXiv]]   |
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