H1 and ZEUS

Precision measurements of alphas at HERA (H1 and ZEUS)

Reference Preliminary result shown in EPS07, Summer 2007
Document Conference paper or talk
Figures  (1)  (2)  (3)  (3_woLEP)
Contact Thomas Kluge
Abstract The precision measurements of the strong coupling, alphas, and its energy-scale dependence performed at HERA by the H1 and ZEUS Collaborations are presented. A new HERA average value is also presented using recent inclusive-jet cross-section measurements in neutral current deep inelastic scattering at high Q^2. The combined HERA determinations of alphas at various energy scales clearly show the running of the coupling from these jet data alone and are in agreement with the prediction of perturbative QCD.
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