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.

Observation of Jet Production In Deep-inelastic Scattering With A Large Rapidity Gap At Hera

CIRIO, Roberto;COSTA, Marco;PERONI, Cristiana;SACCHI, Roberto;SOLANO, Ada Maria;
1994-01-01

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.
1994
332
228
243
http://dx.doi.org/10.1016/0370-2693(94)90883-4
LUND MONTE-CARLO; DIFFRACTION DISSOCIATION; POMERON STRUCTURE; E+E-PHYSICS; ZEUS; VERSION; FRAGMENTATION; CALORIMETER; DETECTOR; EVENTS
M. DERRICK;D. KRAKAUER;S. MAGILL;B. MUSGRAVE;J. REPOND;J. SCHLERETH;R. STANEK;R. L. TALAGA;J. THRON;F. ARZARELLO;R. AYAD;G. BARI;M. BASIL...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/109296
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