Splitting the pomeron into two jets: a novel process at HERA

1994/03/13 by N. N. Nikolaev, B. G. Zakharov, Б. Г. Захаров · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/0370-2693(94)90876-1

published as Phys.Lett. B332 (1994) 177-183 · 11 pages, 4 figures on request from [email protected], Juelich preprint KFA-IKP(Th)-1994-16, 10 March 1994

arxiv created 1994/03/13 · openalex publication_date 1994/07/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study a novel property of large rapidity-gap events in deep inelastic scattering at HERA: splitting the pomeron into two jets in the photon-pomeron fusion reaction γ^*\Pom → qq. It gives rise to the diffraction dissociation of virtual photons into the back-to-back jets. We find that at large invariant mass M of two jets, M²≫ Q², the transverse momentum of jets comes from the intrinsic transverse momentum of gluons in the pomeron, and the photon-pomeron fusion direcly probes the diffrential gluon structure function of the proton ∂ G(x,q²)/∂ log q² at the virtuality q²∼ k². We present estimates for the jet production cross section, which show the process is easily measurable at HERA.

Cited by

• Coherent production of hard dijets on nuclei in QCD
• High-density QCD and saturation of nuclear partons
• Exclusive diffractive electroproduction of dijets in collinear factorization
• Diffractive dijet photoproduction as a probe of the off-diagonal gluon distribution