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.
Cite
@article{arxiv.hep-ph/0111090,
title = {Hard colour singlet exchange and gaps between jets at the Tevatron},
author = {R. Enberg and G. Ingelman and L. Motyka},
journal= {arXiv preprint arXiv:hep-ph/0111090},
year = {2011}
}
Comments
15 pages, 11 eps figures