αs at Zinnowitz 2004

/ Authors

/ Abstract

A review of measurements of α s is given, representing the status of April 2004. The results prove the energy dependence of α s and are in excellent agreement with the expectations of Quantum Chromodynamics, QCD. Evolving all results to the rest energy of the Z 0 boson, the world average of α s( M Z 0) is determined from mea- surements which are based on QCD calculations in complete NNLO perturbation theory, giving α s ( M Z 0 ) = 0.1182 ± 0.0027 .

DOI: 10.1016/j.nuclphysbps.2004.09.020