Hard colour singlet exchange at the Tevatron from the BFKL equation

Abstract

We study rapidity gaps between jets in ppbar collisions at the Tevatron by a novel solution of the nonforward BFKL equation including nonleading effects through the consistency constraint and running coupling. Results differ from earlier calculations based on the asymptotic Mueller-Tang formula, but agree with D0 data when including full event simulation using PYTHIA to model the gap survival probability.

4 pages, 2 figures. To appear in the proceedings of 9th International Workshop on Deep Inelastic Scattering (DIS 2001), Bologna, April 2001. V2: corrected the normalisation of fig. 1; final results unchanged