| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1849448 | Nuclear Physics B - Proceedings Supplements | 2008 | 5 Pages |
Abstract
Recent results for the cross section of electron-positron annihilation into hadrons and for the decay rates of the Z-boson and the τ-lepton into hadrons including corrections of order are reviewed. The consistency between two values of αs measured at vastly different energies constitutes a striking test of asymptotic freedom. Combining the results from Z and τ decays we find αs(MZ)=0.1198±0.0015 as one of the most precise and presently only NNNLO result for the strong coupling constant.
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Nuclear and High Energy Physics
