Observation of hard scattering in photoproduction events with a large rapidity gap at HERA
Journal
Physics Letters
Journal Volume
B346
Pages
399-414
Date Issued
1994-11
Author(s)
Derrick, M. et al.(ZEUS Collaboration)
Abstract
Events with a large rapidity gap and total transverse energy greater than 5 GeV have been observed in quasi-real photoproduction at HERA with the ZEUS detector. The distribution of these events as a function of the γp centre of mass energy is consistent with diffractive scattering. For total transverse energies above 12 GeV, the hadronic final states show predominantly a two-jet structure with each jet having a transverse energy greater than 4 GeV. For the two-jet events, little energy flow is found outside the jets. This observation is consistent with the hard scattering of a quasi-real photon with a colourless object in the proton. © 1995.
SDGs
Type
journal article