Hard colour singlet exchange and gaps between jets at the Tevatron

Abstract

The new kind of events with a rapidity gap between two high-E_T jets, observed in high energy ppbar collisions at the Tevatron, is found to be well described by the exchange of a colour singlet gluon system in the BFKL framework. This requires going beyond the conventional asymptotic Mueller-Tang approximation, which results in qualitatively different features of the basic parton-parton scattering amplitude. Non-leading corrections to the BFKL equation are included by incorporation of the consistency constraint and the running QCD coupling. Hadronisation and other non-perturbative QCD effects are treated through a complete Monte Carlo simulation, providing a gap survival probability that varies event-by-event, facilitating comparison with experimental results.

15 pages, 11 eps figures

References in corpus (2)

• Mueller-Navelet Jets at Hadron Colliders
• Soft Color Interactions and Diffractive Hard Scattering at the Fermilab Tevatron

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