Probing Hard Color-Singlet Exchange in $p\bar{p}$ Collisions at $\sqrt{s} = 630$ GeV and 1800 GeV
Phys.Lett.B 440 (1998) 189-202, 1998.
The collaboration

Abstract (data abstract)
FERMILAB-COLLIDER. Measurement of the fraction of colour-singlet exchange events in dijet production in PBAR P collisions at centre-of-mass energies of 1800 and 630 GeV. Data come from the 1994-96 Tevatron run primarily at 1800 GeV butwith a short 630 GeV run during this period. Jets are identified using a cone a lgorithm.