Abstract:
We report results from a study of events with a double-
Pomeron exchange topology produced in p-barp
collisions at sqrt[s]=1800 GeV. The events are
characterized by a leading antiproton and a large rapidity
gap on the outgoing proton side. We find that the
differential production cross section agrees in shape with
predictions based on Regge theory and factorization, and
that the ratio of double-Pomeron exchange to single
diffractive production rates is relatively unsuppressed as
compared to the O(10) suppression factor previously
measured in single diffractive production.
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