Measurement of event shapes in deep inelastic scattering at HERA

Details Measurement of event shapes in deep inelastic scattering at HERA Measurement of event shapes in deep inelastic scattering at HERA

2002-11-15

arxiv.org/abs/hep-ex/0211040v2

Eur.Phys.J.C27:531-545,2003

Physics

High Energy Physics

High Energy Physics - Experiment

7+25 pages, 6 figures

Scientific paper

10.1140/epjc/s2003-01148-x

Inclusive event-shape variables have been measured in the current region of the Breit frame for neutral current deep inelastic ep scattering using an integrated luminosity of 45.0 pb^-1 collected with the ZEUS detector at HERA. The variables studied included thrust, jet broadening and invariant jet mass. The kinematic range covered was 10 < Q^2 < 20,480 GeV^2 and 6.10^-4 < x < 0.6, where Q^2 is the virtuality of the exchanged boson and x is the Bjorken variable. The Q dependence of the shape variables has been used in conjunction with NLO perturbative calculations and the Dokshitzer-Webber non-perturbative corrections (`power corrections') to investigate the validity of this approach.

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