Hard colour singlet exchange and gaps between jets at the Tevatron

Details Hard colour singlet exchange and gaps between jets at the Tevatron Hard colour singlet exchange and gaps between jets at the Tevatron

2001-11-08

arxiv.org/abs/hep-ph/0111090v1

Phys.Lett.B524:273-282,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 11 eps figures

Scientific paper

10.1016/S0370-2693(01)01379-X

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.

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