Observation of hard scattering in photoproduction at HERA
Journal
Physics Letters
Journal Volume
B297
Pages
404-416
Date Issued
1992-10
Author(s)
Derrick, M. et al.(ZEUS Collaboration)
Abstract
We report a study of electron proton collisions at very low Q2, corresponding to virtual photoproduction at centre of mass energies in the range 100-295 GeV. The distribution in transverse energy of the observed hadrons is much harder than can be explained by soft processes. Some of the events show back-to-back two-jet production at the rate and with the characteristics expected from hard two-body scattering. A subset of the two-jet events have energy in the electron direction consistent with that expected from the photon remnant in resolved photon processes. © 1992.
SDGs
Type
journal article