DOI 10.1007/s100520000344
Investigation of power corrections to event shape variables measured in deep-inelastic scattering
The H1 Collaboration
C. Adloff33 - et al.
33 Fachbereich Physik, Bergische Universität Gesamthochschule
Wuppertal, Wuppertal, Germany
Received: 22 December 1999 / Published online: 25 February 2000 - © Springer-Verlag 2000
Abstract
Deep-inelastic ep scattering data, taken with the H1 detector at
HERA, are used to study the event shape variables thrust, jet
broadening, jet mass, C parameter and two kinds of differential
two-jet rate. The data cover a large range of the four-momentum
transfer Q, which is considered to be the relevant energy scale,
between
and
.
The Q dependences of the mean
values are compared with second order calculations of perturbative
QCD applying power law corrections proportional to 1/Qp to
account for hadronization effects. The concept of power corrections
is investigated by fitting simultaneously a non-perturbative
parameter
and the strong coupling constant
.
Copyright Società Italiana di Fisica, Springer-Verlag 2000