====== TTP99-39 alpha_s^3 conversion relation between MS-bar and Euclidean quark masses ======
 
 
   <hidden TTP99-39  alpha_s^3 conversion relation between MS-bar and Euclidean quark masses > We report on the analytical calculation of NNNLO (of order alpha_s^3)
 conversion factor between the MS-bar  quark mass and the one defined
 in the so-called Regularization Invariant scheme. The
 NNNLO contribution in the conversion factor turns out to be
 relatively large and comparable to the known NNLO term.
 </hidden>
|**K. G. Chetyrkin and A. R\'etey**  | 
|**  Nucl.Phys.Proc.Suppl.   86 508-511 2000  **  |
| {{preprints:1999:ttp99-39.pdf|PDF}} {{preprints:1999:ttp99-39.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9909565|arXiv]]   |
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