Diffractive Phenomena at Tevatron
A. Santoro
Abstract
Preliminary results from the D0 experiment on jet production with rapidity gaps in pp collisions are presented. A class of dijet events with a forward rapidity gap is observed at center-of-mass energies s = 1800 GeV and 630 GeV. The number of events with rapidity gaps at both center-of-mass energies is significantly greater than the expectation from multiplicity fluctuations and is consistent with a hard single diffractive process. A class of events with two forward gaps and central dijets are also observed at 1800 GeV. This topology is consistent with hard double pomeron exchange. We also present proposed plans for extending these analysis into Run II through the use of a forward proton detector.
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