Measurement of the E(T,jet)/ 2 /Q 2 dependence of forward-jet production at HERA

Zeus Collaboration

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The forward-jet cross section in deep inelastic e + p scattering has been measured using the ZEUS detector at HERA with an integrated luminosity of 6.36 pb -1 . The jet cross section is presented as a function of jet transverse energy squared, E(T,jet)/ 2 , and Q 2 in the kinematic ranges 10 -2 < E(T,jet)/ 2 /Q 2 < 10 2 and 2.5 · 10 -4 < x < 8.0 · 10 -2 . Since the perturbative QCD predictions for this cross section are sensitive to the treatment of the log(E(T,jet)/ 2 /Q2) terms, this measurement provides an important test. The measured cross section is compared to the predictions of a next-to-leading order pQCD calculation as well as to various leading-order Monte Carlo models. Whereas the predictions of all models agree with the measured cross section in the region of small E(T,jet/ 2 /Q 2 only one model, which includes a resolved photon component, describes the data over the whole kinematic range. (C) 2000 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)223-233
Number of pages11
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume474
Issue number1-2
DOIs
Publication statusPublished - 2000 Feb 10

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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