Journal article
Event Shapes in Deep Inelastic Scattering at HERA
Nuclear physics. B, Particle physics, Vol.767, pp.1-28
04/02/2007
DOI: 10.1016/j.nuclphysb.2006.05.016
Abstract
Mean values and differential distributions of event-shape variables have been studied in neutral current deep inelastic scattering using an integrated luminosity of 82.2 pb-1 collected with the ZEUS detector at HERA. The kinematic range is 80 < Q2 < 20 480 GeV2 and 0.0024 < x < 0.6, where Q2 is the virtuality of the exchanged boson and x is the Bjorken variable. The data are compared with a model based on a combination of next-to-leading-order QCD calculations with next-to-leading-logarithm corrections and the Dokshitzer-Webber non-perturbative power corrections. The power-correction method provides a reasonable description of the data for all event-shape variables studied. Nevertheless, the lack of consistency of the determination of αs and of the non-perturbative parameter of the model, over(α0, -), suggests the importance of higher-order processes that are not yet included in the model.
Details
- Title: Subtitle
- Event Shapes in Deep Inelastic Scattering at HERA
- Creators
- ZEUS CollaborationJose Repond (Contributor) - Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- Nuclear physics. B, Particle physics, Vol.767, pp.1-28
- DOI
- 10.1016/j.nuclphysb.2006.05.016
- ISSN
- 0550-3213
- eISSN
- 1873-1562
- Language
- English
- Date published
- 04/02/2007
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984627207202771
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