Further studies of isolated photon production with a jet in deep inelastic scattering at HERA

The ZEUS collaboration

研究成果: Article査読

4 被引用数 (Scopus)

抄録

Isolated photons with high transverse energy have been studied in deep inelastic ep scattering with the ZEUS detector at HERA, using an integrated luminosity of 326 pb−1 in the range of exchanged-photon virtuality 10-350 GeV2. Outgoing isolated photons with transverse energy 4 < ET γ < 15 GeV and pseudorapidity − 0.7 < ηγ < 0.9 were measured with accompanying jets having transverse energy and pseudorapidity 2.5 < ET jet < 35 GeV and −1.5 < ηjet< 1.8, respectively. Differential cross sections are presented for the following variables: the fraction of the incoming photon energy and momentum that is transferred to the outgoing photon and the leading jet; the fraction of the incoming proton energy transferred to the photon and leading jet; the differences in azimuthal angle and pseudorapidity between the outgoing photon and the leading jet and between the outgoing photon and the scattered electron. Comparisons are made with theoretical predictions: a leading-logarithm Monte Carlo simulation, a next-to-leading-order QCD prediction, and a prediction using the kT -factorisation approach.

本文言語English
論文番号32
ジャーナルJournal of High Energy Physics
2018
1
DOI
出版ステータスPublished - 1 1月 2018

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