QCD Corrections to Hadronic Z and tau Decays
P. A. Baikov, K. G. Chetyrkin, J. H. Kuehn
Abstract
We present a brief (mainly bibliographical) report on recently performed calculations of terms of order O(αs4 nf2) and O(αs4 nf2 mq2) for hadronic Z and τdecay rates. A few details about the analytical evaluation of the masters integrals appearing in the course of calculations are presented.
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