The measurement of s from event shapes with theDELPHI detector at LEP
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چکیده
Event shape distributions are determined from the data taken between 183 and 207 GeV. From these the strong coupling s is extracted in O(2 s), NLLA and matched O(2 s)+NLLA theory. Hadronisation corrections evaluated with fragmentation model generators as well as an analytical power ansatz are applied. Comparing these measurements to those obtained at and around M Z allows a combined measurement of s from all DELPHI data and a test of the energy dependence of the strong coupling.
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تاریخ انتشار 2002