ZEUS Collaboration, The;
(2004)
Search for QCD-instanton induced events in deep inelastic ep scattering at HERA.
The European Physical Journal C - Particles and Fields
, 34
(3)
pp. 255-265.
10.1140/epjc/s2004-01735-3.
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Abstract
A search for QCD-instanton-induced events in deep inelastic ep scattering has been performed with the ZEUS detector at the HERA collider, using data corresponding to an integrated luminosity of 38 pb-1. A kinematic range defined by cuts on the photon virtuality, Q2 > 120 GeV2, and on the Bjorken scaling variable, x > 10-3, has been investigated. The QCD-instanton induced events were modelled by the Monte Carlo generator QCDINS. A background-independent, conservative 95% confidence level upper limit for the instanton cross section of 26 pb is obtained, to be compared with the theoretically expected value of 8.9 pb.
| Type: | Article |
|---|---|
| Title: | Search for QCD-instanton induced events in deep inelastic ep scattering at HERA |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1140/epjc/s2004-01735-3 |
| Publisher version: | http://dx.doi.org/10.1140/epjc/s2004-01735-3 |
| Language: | English |
| Additional information: | The ZEUS Collaboration includes the following UCL authors: S. Boutle, J.M. Butterworth, C. Gwenlan, R. Hall-Wilton, T.W. Jones, J.H. Loizides, D. Nicholass, M.R. Sutton, C. Targett-Adams and M. Wing. |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10069 |
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