Analysis of multijet events produced at high energy hadron colliders

We define and discuss a set of (4N-4) parameters that can be used to analyze events in which N jets have been produced in high-energy hadron-hadron collisions. These multijet variables are the multijet mass and (4N-5) independent dimensionless parameters. To illustrate the use of the variables QCD predictions are presented for events with up to five jets produced at the Fermilab Tevatron proton-antiproton collider. These QCD predictions are compared with the predictions of a model in which multijet events uniformly populate the N-body phase space.