Interjet Rapidity Gaps in Perturbative QCD

Abstract

We discuss a formalism in which high-$p_T$ dijet rapidity gaps are identified by energy flow in the interjet region. When the gap energy, $Q_{\mathrm{gap}}$, is sufficiently large, the cross section may be computed from standard factorization theorems. For $p_T\gg Q_T\gg {\Lambda }_{\mathrm{QCD}}$, this is a two-scale perturbative problem, in which we may resum logarithms of $Q_{\mathrm{gap}}/p_T$. The cross section computed as a function of $Q_{\mathrm{gap}}$ reproduces many of the features of the Tevatron dijet gap data. The factorized cross section gives meaning to the color content of the hard scattering.

6 pages, 1 epsi figure. Talk presented at QCD and Multiparticle Production, XXIX International Symposium on Multiparticle Dynamics, Brown University, Aug. 9-13, 1999