====== TTP03-08 Three Loop Top Quark Contributions to the rho Parameter ======
 
 
      <hidden TTP03-08  Three Loop Top Quark Contributions to the rho Parameter > We present results for the three-loop top quark contributions to the
 rho parameter in the limit of large top quark mass. The simultaneous
 dependence on the mass of the Higgs boson M_H and the mass of the top
 quark m_t is obtained from expansions in the range of M_H around
 m_t and in the limit M_H >> m_t. In combination with the previous
 result for M_H = 0 the dependence of the rho parameter on the
 leading Yukawa contributions, i.e. on m_t and M_H, is well under
 control for all mass values of practical importance. 
 The effects lead to a shift in the W mass in the order of 5 MeV and 
 are relevant for precision measurements at TESLA.
 </hidden>
|**M. Faisst, J. Kuhn, T. Seidensticker, and O. Veretin**  | 
|**  Nucl.Phys.B  665 649-662 2003  **  |
| {{preprints:2003:ttp03-08.pdf|PDF}} {{preprints:2003:ttp03-08.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0302275|arXiv]] [[http://ttp.kit.edu/Progdata/ttp03/ttp03-08|Programs and Data]]   |
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