Three-jet production in diffractive deep inelastic scattering at HERA.
Three-jet production in the reaction ep to eXp has been studied with the ZEUS detector at HERA using an integrated luminosity of 42.74 pb/sup -1/. The data were measured in the kinematic region 5 lt Q/sup 2/ lt 100 GeV/sup 2/, 200 lt W lt 250 GeV and 23 lt M/sub X/ lt 40 GeV. The diffractive signal was selected by requiring a large rapidity gap in the outgoing proton direction. Jets were reconstructed in the centre-of-mass system of X using the exclusive k/sub T/-algorithm. A sample of three-jet events in diffraction has been identified. Differential cross sections were measured as a function of the jet pseudorapidity and jet transverse momentum with respect to the virtual photon-pomeron axis. The jets going in the pomeron direction are broader than those going in the virtual-photon direction. This is consistent with models predicting that gluons are predominantly produced in the pomeron direction and quarks in the virtual-photon direction.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 949339
- Report Number(s):
- ANL-HEP-PR-01-72
- Journal Information:
- Phys. Lett. B, Journal Name: Phys. Lett. B Journal Issue: 3-4 ; Sep. 20, 2001 Vol. 516; ISSN PYLBAJ; ISSN 0370-2693
- Country of Publication:
- United States
- Language:
- ENGLISH
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