Events with a Rapidity Gap between Jets in p̅p Collisions at √s = 630 GeV

Authors

F. Abe, National Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki 305, Japan
Kenneth A. Bloom, University of Nebraska-LincolnFollow
Collider Detector at Fermilab Collaboration

Date of this Version

12-14-1998

Comments

Published by American Physical Society. Phys. Rev. Lett. 81, 5278 (1998). http://prl.aps.org. Copyright © 1998 American Physical Society. Permission to use.

Abstract

We report a measurement of the fraction of dijet events with a rapidity gap between jets produced by color-singlet exchange in p̅p collisions at √s =630 GeV at the Fermilab Tevatron. In events with two jets of transverse energy E_T^jet > 8 GeV, pseudorapidity in the range 1.8 <|η^jet | < 3.5 and η₁ η₂ < 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 =1800 GeV and with theoretical expectations.