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Measurement of event shapes in deep inelastic scattering at HERA

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Publisher
Springer
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Keywords
  • Qc Physics

Abstract

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/sup -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 lt Q/sup 2/ lt 20 480 GeV/sup 2/ and 6 * 10/sup -4/ lt * lt 0.6, where Q/sup 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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