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. RI De Pasquale, Salvatore/B-9165-2008; Lancaster, Mark/C-1693-2008; Chen, L/G-3338-2010; Doyle, Anthony/C-5889-2009; Golubkov, Yury/E-1643-2012

OBSERVATION OF HARD SCATTERING IN PHOTOPRODUCTION AT HERA

SCHIOPPA, Marco;
1992-01-01

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. RI De Pasquale, Salvatore/B-9165-2008; Lancaster, Mark/C-1693-2008; Chen, L/G-3338-2010; Doyle, Anthony/C-5889-2009; Golubkov, Yury/E-1643-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/147161
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