TTP03-35 QCD Corrections to Hadronic Z and tau Decays

TTP03-35 QCD Corrections to Hadronic Z and tau Decays

TTP03-35 QCD Corrections to Hadronic Z and tau Decays

We present a brief (mainly bibliographical) report on recently performed calculations of terms of order O(\alpha_s^4 n_f^2) and O(\alpha_s^4 n_f^2 m_q^2) for hadronic Z and \tau decay rates. A few details about the analytical evaluation of the masters integrals appearing in the course of calculations are presented.

P. A. Baikov (Moscow State Univ.), K. G. Chetyrkin and J. H. Kuehn (Karlsruhe Univ.)
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