1 research outputs found
Determinations of alpha_s using JADE data of e^+e^- Annihilations at sqrt{s} = 22 to 44 GeV
Data recorded by the JADE experiment at the PETRA e^+e^- collider were used
to measure distributions of new event shape observables. The distributions were
compared with resummed QCD calulations (O(alpha_s^2)+NLLA), and the strong
coupling constant alpha_s was determined at \sqrt{s}= 22, 35 and 44 GeV. The
results are in agreement with previous combined results of PETRA but have
smaller uncertainties. Together with corresponding data from LEP, the energy
dependence of alpha_s is significantly tested and is found to be in good
agreement with the QCD expectation.Comment: 6 pages, uses espcrc2.sty (included) and epsfig.sty, LaTeX2e, 8
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