Precision Measurements of alphas at HERA

Abstract

The precision measurements of the strong coupling constant, alphas, and its energy-scale dependence carried out at HERA by the H1 and ZEUS Collaborations are reviewed. An average value of alphas(Mz) = 0.1186 +- 0.0011 (exp.) +- 0.0050 (th.) is obtained from these measurements. The combined HERA determinations of the energy-scale dependence of alphas clearly show the running of alphas from jet data alone and are in agreement with the running of the coupling as predicted by QCD.

4 pages, 2 figures. Talk given in the XIII International Workshop on Deep Inelastic Scattering, April 27 - May 1, 2005, Madison, Wisconsin USA

Cited by in corpus (10)

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• Experimental Tests of Asymptotic Freedom
• Deep Inelastic Electron-Nucleon Scattering at the LHC
• Collider Physics at HERA
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• Inclusive-jet photoproduction at HERA and determination of alphas
• Jets in ep and gammap Scattering at HERA
• The determination of alpha_s(M_z) from perturbative analyses of short-distance-sensitive lattice QCD observables revisited
• Implications of HERA measurements for LHC
• Jet Cross-Sections and alphas in DIS at HERA