Splitting the pomeron into two jets: a novel process at HERA
نویسنده
چکیده
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 γIP → qq̄. 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 ≫ Q, 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, q)/∂ log q at the virtuality q ∼ k. We present estimates for the jet production cross section, which show the process is easily measurable at HERA. E-mail: [email protected]
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