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arXiv · 0710.1498

Diffractive photoproduction of dijets in ep collisions at HERA

ZEUS Collaboration·S. Chekanov
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Abstract

Diffractive photoproduction of dijets was measured with the ZEUS detector at the ep collider HERA using an integrated luminosity of 77.2 pb-1. The measurements were made in the kinematic range Q^2 < 1 GeV^2, 0.20 < y < 0.85 and x_pom < 0.025, where Q^2 is the photon virtuality, y is the inelasticity and x_pom is the fraction of the proton momentum taken by the diffractive exchange. The two jets with the highest transverse energy, E_T^jet, were required to satisfy E_T^jet > 7.5 and 6.5 GeV, respectively, and to lie in the pseudorapidity range -1.5 < eta^jet < 1.5. Differential cross sections were compared to perturbative QCD calculations using available parameterisations of diffractive parton distributions of the proton.

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ZEUS Collaboration, S. Chekanov. 2008-03-26. Diffractive photoproduction of dijets in ep collisions at HERA. https://doi.org/10.1140/epjc%2Fs10052-008-0598-2

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