Rapidity gaps between jets inpp¯collisions at √s=1.8 TeV

First experimental results are presented from a search for events with a rapidity gap between jets. The D0 detector was used to examine events produced by the Fermilab Tevatron pp{} collider at {}s =1.8 TeV. The fraction of events with an observed rapidity gap between the two highest transverse energy (ET) jets is measured as a function of the pseudorapidity separation between the jet edges ({Δ}ηc). An upper limit at the 95% confidence level of 1.1×{}10^-2 is obtained on the fraction of events with non particles between the jets, for events with {Δ}ηc>3 and jet ET greater than 30 GeV.