eprintid: 10069
rev_number: 27
eprint_status: archive
userid: 599
dir: disk0/00/01/00/69
datestamp: 2008-10-16 10:28:27
lastmod: 2015-07-19 00:49:10
status_changed: 2008-10-16 10:28:27
type: article
metadata_visibility: show
creators_name: ZEUS Collaboration, The
title: Search for QCD-instanton induced events in deep inelastic ep scattering at HERA
ispublished: pub
subjects: 11000
divisions: F60
note: 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.
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.
date: 2004
official_url: http://dx.doi.org/10.1140/epjc/s2004-01735-3
vfaculties: VMPS
rae2008: 19
oa_status: green
language: eng
primo: open
primo_central: open_green
doi: 10.1140/epjc/s2004-01735-3
full_text_status: public
publication: The European Physical Journal C - Particles and Fields
volume: 34
number: 3
pagerange: 255-265
refereed: TRUE
issn: 1434-6044
citation:        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 <https://doi.org/10.1140/epjc%2Fs2004-01735-3>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10069/1/10069.pdf