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 (${\mathit{E}}_{\mathit{T}}$) jets is measured as a function of the pseudorapidity separation between the jet edges (Δ${\mathrm{\eta }}_{\mathit{c}}$). An upper limit at the 95% confidence level of 1.1×${10}^{\mathrm{-}2}$ is obtained on the fraction of events with non particles between the jets, for events with Δ${\mathrm{\eta }}_{\mathit{c}}$>3 and jet ${\mathit{E}}_{\mathit{T}}$ greater than 30 GeV.