Search for QCD-instanton induced events in deep inelastic ep scattering at HERA Academic Article

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 GeV 2, 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 8.9pb.

authors

• Nguyen, Cam Van

published proceedings

• European Physical Journal C

author list (cited authors)

• The ZEUS Collaboration.

citation count

• 15

complete list of authors

publication date

• May 2004

publisher

• Springer Nature  Publisher

published in

• European Physical Journal C  Journal

Digital Object Identifier (DOI)

• 10.1140/epjc/s2004-01735-3

start page

• 255

end page

• 265

volume

• 34

issue

• 3

URL

• http://dx.doi.org/10.1140/epjc/s2004-01735-3