Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
| <mark>Journal publication date</mark> | 5/04/2010 |
|---|---|
| <mark>Journal</mark> | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Issue number | 1 |
| Volume | 687 |
| Number of pages | 10 |
| Pages (from-to) | 16-25 |
| Publication Status | Published |
| <mark>Original language</mark> | English |
Isolated photon production in deep inelastic ep scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 320 pb - 1. Measurements were made in the isolated-photon transverse-energy and pseudorapidity ranges 4 < E T γ < 15 GeV and - 0.7 < η γ < 0.9 for exchanged photon virtualities, Q 2, in the range 10 < Q 2 < 350 GeV 2 and for invariant masses of the hadronic system W X > 5 GeV. Differential cross sections are presented for inclusive isolated photon production as functions of Q 2, x, E T γ and η γ. Leading-logarithm parton-shower Monte Carlo simulations and perturbative QCD predictions give a reasonable description of the data over most of the kinematic range.