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

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

1994-03-13

arxiv.org/abs/hep-ph/9403281v1

Phys.Lett. B332 (1994) 177-183

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 4 figures on request from kph154@zam001.zam.kfa-juelich.de, Juelich preprint KFA-IKP(Th)-1994-16, 10 March 1994

Scientific paper

10.1016/0370-2693(94)90876-1

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 $\gamma^{*}\Pom \rightarrow q\bar{q}$. 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, $M^{2}\gg Q^{2}$, 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 $\partial G(x,q^{2})/\partial \log q^{2}$ at the virtuality $q^{2}\sim k^{2}$. We present estimates for the jet production cross section, which show the process is easily measurable at HERA.

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