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Measurement of event shapes in deep inelastic scattering at HERA
Journal article   Open access   Peer reviewed

Measurement of event shapes in deep inelastic scattering at HERA

ZEUS Collaboration and J Repond
The European physical journal. C, Particles and fields, Vol.27(4), pp.531-545
04/01/2003
DOI: 10.1140/epjc/s2003-01148-x

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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(-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 GeV2 and 6 x 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.
Physical Sciences Physics Physics, Particles & Fields Science & Technology

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