Photon Contribution to the ``Super-hard" Pomeron

Abstract

It is shown that direct photons provide a leading twist mechanism for diffractive jet production in which the jets carry away all of the momentum lost by the proton. Two-photon processes are thus expected to asymptotically dominate "super-hard" pomeron events in $ep$ collisions. We report the expected rates from these events for the recent ZEUS and H1 data cuts. We also estimate the direct photon contribution to the "super-hard" pomeron events observed by the CERN UA8 group for $p\bar{p}$ collisions.

RevTeX, 21 pages, 4 figures. Corrected errors regarding the proton's E.M. form factor: direct photons now found to yield an appreciable fraction (~15%) of the events seen at UA8

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