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Abstract
We present results obtained from a study of the structure of hadronic events recorded by the L3 detector at a centre-of-mass energy of 183 GeV. The data sample corresponds to an integrated luminosity of 55.3 pb −1. The distributions of event shape variables and the energy dependence of their mean values are measured. From a comparison with resummed O ( α s 2) QCD calculations, we determine the strong coupling constant α s (183 GeV)=0.1086 ± 0.0026 (exp) ± 0.0054 (th) . The charged particle multiplicity distribution and momentum spectrum are studied and the energy dependence of the peak position of the ξ(=−ln x p ) distribution is compared with lower energy measurements and QCD expectations.
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