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OBSERVATION OF JET PRODUCTION IN DEEP-INELASTIC SCATTERING WITH A LARGE RAPIDITY GAP AT HERA

DERRICK, M; KRAKAUER, D; MAGILL, S; MUSGRAVE, B; REPOND, J; SCHLERETH, J; ... IGA, Y; + view all (1994) OBSERVATION OF JET PRODUCTION IN DEEP-INELASTIC SCATTERING WITH A LARGE RAPIDITY GAP AT HERA. PHYS LETT B , 332 (1-2) 228 - 243.

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Abstract

Events with a large rapidity gap in deep inelastic scattering with Q2 greater-than-or-equal-to 10 GeV2 have been studied in the ZEUS detector. The properties of these events with W > 140 GeV are consistent with a leading twist diffractive production mechanism. In the laboratory frame, with E(T)jet greater-than-or-equal-to 4 GeV, 15% of the events are of the 1-jet type with negligible 2-jet production. The single jet is back-to-back in azimuth with the scattered electron. No energy flow is observed between the jet and the proton direction. With a lower jet transverse energy cut 2-jet production is observed both in the laboratory and the gamma*p centre-of-mass systems, demonstrating the presence of hard scattering in the virtual photon proton interactions that give rise to large rapidity gap events.

Type:Article
Title:OBSERVATION OF JET PRODUCTION IN DEEP-INELASTIC SCATTERING WITH A LARGE RAPIDITY GAP AT HERA
Keywords:LUND MONTE-CARLO, DIFFRACTION DISSOCIATION, POMERON STRUCTURE, E+E-PHYSICS, ZEUS, VERSION, FRAGMENTATION, CALORIMETER, DETECTOR, EVENTS
UCL classification:UCL > School of Arts and Social Sciences > Faculty of Arts and Humanities > Philosophy
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy

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