====== TTP99-01 Expansion Techniques in Massive Quark Production: Results and Applications ======
 
 
   <hidden TTP99-01  Expansion Techniques in Massive Quark Production: Results and Applications > Recent progress in the calculation of multi-loop, multi-scale diagrams
 is reviewed. Expansion techniques combined with new developments in
 Computer algebra allow to evaluate the R ratio for massive quarks
 up to order $\alpha_s^2$ and, partly, even $\alpha_s^3$. Similar
 techniques can be applied to Higgs- or Z-boson decays and mixed QCD
 and electroweak interactions.
 </hidden>
|**J.H. Kuehn**  | 
|**      Radiative corrections: Application of quantum field theory to phenomenology, Proceedings of the 4th international symposium, Barcelona, 1998, edited by Joan Sola (World Scientific, Singapore, 1999), 202-222 **  |
| {{preprints:1999:ttp99-01.pdf|PDF}} {{preprints:1999:ttp99-01.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9901330|arXiv]]   |
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