Measurement of isolated photon production in deep inelastic ep scattering

201058 citationsJournal Articlehybrid Open Access

Authors

S. Chekanov · United States Department of Energy

M. Derrick · United States Department of Energy

S. Magill · United States Department of Energy

B. Musgrave · United States Department of Energy

D. Nicholass · United States Department of Energy

J. Repond · United States Department of Energy

R. Yoshida

Abstract

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 < 15 GeV and -0.7 < < 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 and . Leadinglogarithm parton-shower Monte Carlo simulations and perturbative QCD predictions give a reasonable description of the data over most of the kinematic range.

Topics & Keywords

Particle physics theoretical and experimental studies High-Energy Particle Collisions Research Quantum Chromodynamics and Particle Interactions

UN Sustainable Development Goals

Affordable and clean energy

Publication Details

Published in: Physics Letters B

Volume 687, Issue 1, pp. 16-25

DOI: 10.1016/j.physletb.2010.02.045

Field-Weighted Citation Impact: 5.77