Observation of hard scattering in photoproduction at HERA
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.
- Publication:
-
Physics Letters B
- Pub Date:
- December 1992
- DOI:
- 10.1016/0370-2693(92)91280-M
- Bibcode:
- 1992PhLB..297..404D