Dijet angular distributions from p»p collisions at s=1.8 TeV

We have measured dijet angular distributions at ..sqrt../ital s/ =1.8 TeV with the Collider Detector at Fermilab and the Tevatron /ital p/bar /p/ Collider and find agreement with leading-order QCD. By comparing the distribution for the highest dijet invariant masses with the prediction of a model of quark compositeness, we set a lower limit on the associated scale parameter ..lambda../sub /ital c// at 330 GeV (95% C.L.).