Evidence for Factorization Breaking in Diffractive Low-Q^2 Dijet Production

Abstract

We calculate diffractive dijet production in deep-inelastic scattering at next-to-leading order of perturbative QCD, including contributions from direct and resolved photons, and compare our predictions to preliminary data from the H1 collaboration at HERA. In contrast to recent experimental claims, evidence for factorization breaking is found only for resolved, and not direct, photon contributions. No evidence is found for large normalization uncertainties in diffractive parton densities. The results confirm theoretical expectations for the (non-)cancellation of soft singularities in diffractive scattering as well as previous results for (almost) real photoproduction.

4 pages, 3 figures

References in corpus (1)

• A QCD analysis of diffractive deep-inelastic scattering data

Cited by in corpus (10)

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• Factorization scheme and scale dependence in diffractive dijet production at low Q^2
• A fresh look at factorization breaking in diffractive photoproduction of dijets at HERA at next-to-leading order QCD
• Factorization Breaking in Dijet Photoproduction with a Leading Neutron
• Leading twist nuclear shadowing and suppression of hard coherent diffraction in proton-nucleus scattering
• Factorization breaking in single-diffractive dijet production at the Tevatron