====== TTP93-09 Mass Corrections to the Tau Decay Rate ======
 
 
   <hidden TTP93-09  Mass Corrections to the Tau Decay Rate > In this note radiative corrections to the total hadronic decay rate of
 the $\tau$-lepton are studied employing perturbative QCD and the
 operator product expansion.  We calculate quadratic quark mass
 corrections to the decay rate ration $R_{\tau}$ to the order ${\cal
 O}(\alpha_s^2 m^2)$ and find that they contribute appreciably to the
 Cabbibo supressed decay modes of the $\tau$-lepton.  We also discuss
 corrections of mass dimension $D=4$, where we emphasize the need of a
 suitable choice of the renormalization scale of the quark and gluon
 condensates.
 </hidden>
|**K.G. Chetyrkin and A. Kwiatkowski**  | 
|** Z. Phys. C59 525-532 1993  **  |
| {{preprints:1993:ttp93-09.pdf|PDF}} {{preprints:1993:ttp93-09.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9805232|arXiv]]   |
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