Splitting the pomeron into two jets: a novel process at HERA
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 ∗IP → q overlineq. 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 differential 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.
- Publication:
-
Physics Letters B
- Pub Date:
- July 1994
- DOI:
- 10.1016/0370-2693(94)90876-1
- arXiv:
- arXiv:hep-ph/9403281
- Bibcode:
- 1994PhLB..332..177N
- Keywords:
-
- High Energy Physics - Phenomenology
- E-Print:
- 11 pages, 4 figures on request from kph154@zam001.zam.kfa-juelich.de, Juelich preprint KFA-IKP(Th)-1994-16, 10 March 1994