====== TTP06-27 Four-loop $\beta$ function and anomalous mass dimension in Dimensional Reduction ======
 
 
   <hidden TTP06-27  Four-loop $\beta$ function and anomalous mass dimension in Dimensional Reduction > Within the framework of QCD we compute renormalization constants for the
 strong coupling and the quark masses to four-loop order. We apply the
 DR-bar scheme and put special emphasis on the additional couplings which
 have to be taken into account. This concerns the epsilon-scalar--quark
 Yukawa coupling as well as the vertex containing four epsilon-scalars.
 For a supersymmetric Yang Mills theory, we find, in contrast to a
 previous claim, that the evanescent Yukawa coupling equals the strong
 coupling constant through three loops as required by supersymmetry.
 </hidden>
|**R. Harlander, D.R.T. Jones, P. Kant, L. Mihaila, M. Steinhauser**  | 
|**  JHEP  0612 024 2006  **  |
| {{preprints:2006:ttp06-27.pdf|PDF}} {{preprints:2006:ttp06-27.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/0610206|arXiv]]   |
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