We report a measurement of the fraction of dijet events with a rapidity gap between jets produced by color-singlet exchange in pp collisions at √s=630GeV at the Fermilab Tevatron. In events with two jets of transverse energy Ejet T > 8GeV, pseudorapidity in the range 1.8 <|ηjet|< 3.5 and η1η2<0, the color-singlet exchange fraction is found to be R=[2.7 ±0.7(stat)±0.6(syst)]%. Comparisons are made with results obtained at √s=1800GeV and with theoretical expectations.
ASJC Scopus subject areas
- Physics and Astronomy(all)