Calculation of Power Corrections to Hadronic Event Shapes

Abstract

We compute power corrections to hadronic event shapes in $e^{+}{e}^{-}$ annihilation, assuming an infrared regular behaviour of the effective coupling ${\alpha }_s$. With the integral of ${\alpha }_s$ over the infrared region as the only non-perturbative parameter, also measured in heavy quark physics, we can account for the empirical features of $1/Q$ corrections to the mean values of various event shapes.

8 pages (LaTeX) + 1 uuencoded postscript figure (after text)

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