Power corrections to event shapes in deep inelastic scattering
M. Dasgupta - B.R. Webber
Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.
Received: 11 April 1997
Abstract
We investigate the power-suppressed corrections to the mean
values of various quantities that characterise the shapes
of final states in deep inelastic lepton scattering. Our method
is based on an analysis of one-loop Feynman graphs containing a
massive gluon, which is equivalent to the evaluation of leading
infrared renormalon contributions. As in 
annihilation,
we find that the leading corrections are proportional to 1/Q.
We give quantitative estimates based on the hypothesis
of a universal low-energy effective coupling.
Copyright Springer-Verlag
