Diffractive photoproduction of dijets in ep collisions at HERA - INSPIRE

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Diffractive photoproduction of dijets in ep collisions at HERA

ZEUS

Collaboration

Sep, 2007

31 pages

Published in:

Eur.Phys.J.C 55 (2008) 177-191

e-Print:

0710.1498 [hep-ex]

DOI:

10.1140/epjc/s10052-008-0598-2

Report number:

DESY-07-161

Experiments:

DESY-HERA-ZEUS

View in:

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Abstract: (arXiv)

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.

Note:

31 pages, 6 figures, 5 tables, submitted to European Physical Journal C

positron p: colliding beams
electron p: colliding beams
jet: hadroproduction
jet: pair production
diffraction: structure function
jet: transverse energy
jet: rapidity
differential cross section: momentum transfer dependence
x-dependence
rapidity dependence

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Figures(0)

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