The production of dijets in diffractive deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 61 pb(-1). The dijet cross section has been measured for virtualities of the exchanged virtual photon, 5 < Q(2) < 100 GeV(2), and gamma* p centre-of-mass energies, 100 < W < 250 GeV. The jets, identifed using the inclusive k(T) algorithm in the gamma*p frame, were required to have a transverse energy E(T)(*),(jet) > 4GeV and the jet with the highest transverse energy was required to have E(T)(*),jet > 5 GeV. All jets were required to be in the pseudorapidity range -3.5 < eta(*)(jet) < 0. The differential cross sections are compared to leading-order predictions and next-to-leading-order QCD calculations based on recent diffractive parton densities extracted from inclusive diffractive deep inelastic scattering data.
Dijet production in diffractive deep inelastic scattering at HERA
BRUGNERA, RICCARDO;CARLIN, ROBERTO;GARFAGNINI, ALBERTO;A. Longhin;
2007
Abstract
The production of dijets in diffractive deep inelastic scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 61 pb(-1). The dijet cross section has been measured for virtualities of the exchanged virtual photon, 5 < Q(2) < 100 GeV(2), and gamma* p centre-of-mass energies, 100 < W < 250 GeV. The jets, identifed using the inclusive k(T) algorithm in the gamma*p frame, were required to have a transverse energy E(T)(*),(jet) > 4GeV and the jet with the highest transverse energy was required to have E(T)(*),jet > 5 GeV. All jets were required to be in the pseudorapidity range -3.5 < eta(*)(jet) < 0. The differential cross sections are compared to leading-order predictions and next-to-leading-order QCD calculations based on recent diffractive parton densities extracted from inclusive diffractive deep inelastic scattering data.Pubblicazioni consigliate
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