EPJ

2024 Impact factor 4.8
EPJ C - Particles and Fields
Particles and Fields
Eur. Phys. J. C 14, 255-269
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 $7\,{\rm GeV}$ and $100\,{\rm GeV}$. 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 $\overline{\alpha}_{p-1}$ and the strong coupling constant $\alpha_s$.

Copyright Società Italiana di Fisica, Springer-Verlag 2000

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