Multijet structure of high E{sub T} hadronic collisions

Multijet events at large transverse energy ({summation}E{sub T}{gt}420 GeV) and large multijet invariant mass (m{sub jets}{gt}600 GeV) have been studied by the CDF Collaboration at the Fermilab Tevatron. The observed jet multiplicity distribution can be understood in a QCD-inspired exponentiation model, in regions of phase space which require going beyond fixed order perturbation theory. {copyright} {ital 1997} {ital The American Physical Society}