Event shapes in deep inelastic ep → eX scattering at HERA ZEUS

5-0290 Session: QCD Hard Interactions Event shapes in deep inelastic ep → eX scattering at HERA Abstract Means and differential distributions of event-shape variables have been studied in neutral current deep inelastic scattering using an integrated luminosity of 82.2pb −1 collected with the ZEUS detector at HERA. The kinematic range used was 80 < Q 2 < 20480 GeV 2 and 0.0024 < x < 0.6, where Q 2 is the virtuality of the exchanged boson and x is the Bjorken variable. The Q-dependence of the means and distributions of the shape variables are compared with a model based on fixed order plus next-to-leading-logarithm perturbative calculations and the Dokshitzer-Webber non-perturbative corrections ('power corrections').