Measurements of αs from event shapes and the four-jet rate
G. Dissertori
Abstract
New results from measurements of the strong coupling constant αs(MZ) at LEP are presented. In particular, a new LEP combination of results based on event-shape variables has become available, where a new method for the estimation of the theoretical uncertainty has been implemented. Furthermore, two other analyses are quoted, based on power corrections and the four-jet rate.
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