Abstract
Three-jet production in the reaction ep → eXp has been studied with the ZEUS detector at HERA using an integrated luminosity of 42.74 pb-1.The data were measured in the kinematic region 5 <Q2 <100 GeV2, 200 <W <250 GeV and 23 <MX <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 kT-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. © 2001 Elsevier Science B.V. All rights reserved.
| Original language | English |
|---|---|
| Pages (from-to) | 273-292 |
| Number of pages | 19 |
| Journal | Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 516 |
| Issue number | 3-4 |
| DOIs | |
| Publication status | Published - 20 Sept 2001 |