αs at Zinnowitz 2004
Siegfried Bethke
Abstract
A review of measurements of αs is given, representing the status of April 2004. The results prove the energy dependence of αs and are in excellent agreement with the expectations of Quantum Chromodynamics, QCD. Evolving all results to the rest energy of the Z0 boson, the world average of αs(MZ) is determined from measurements which are based on QCD calculations in complete NNLO perturbation theory, giving αs(MZ) = 0.1182 0.0027 .
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