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Photoproduction of events with rapidity gaps between jets at HERA

Chekanov, S.; Derrick, M.; Magill, S.; Miglioranzi, S.; Musgrave, B.; Nicholass, D.; Repond, J.; ... Zeus Collaboration, The; + view all (2007) Photoproduction of events with rapidity gaps between jets at HERA. The European Physical Journal C , 50 (2) pp. 283-297. 10.1140/epjc/s10052-007-0241-7. Green open access

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Abstract

The photoproduction of dijet events, where the two jets with the highest transverse energy are separated by a large gap in pseudorapidity, have been studied with the ZEUS detector using an integrated luminosity of 39 pb-1. Rapidity-gap events are defined in terms of the energy flow between the jets, such that the total summed transverse energy in this region is less than some value ET CUT. The data show a clear excess over the predictions of standard photoproduction models. This is interpreted as evidence for a strongly interacting exchange of a color-singlet object. Monte Carlo models which include such a color-singlet exchange are able to describe the data.

Type: Article
Title: Photoproduction of events with rapidity gaps between jets at HERA
Open access status: An open access version is available from UCL Discovery
DOI: 10.1140/epjc/s10052-007-0241-7
Publisher version: http://dx.doi.org/10.1140/epjc/s10052-007-0241-7
Language: English
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/9553
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