Dijet angular distribution inpp¯collisions at √s=1.8 TeV

The dijet angular distribution is measured in the Collider Detector at Fermilab. This measurement covers higher mass ranges and larger scattering angles than previously possible. Good agreement is observed between the data and both leading-order [O(${\mathrm{\ensuremath{\alpha}}}_{\mathit{s}}^{2}$)] and next-to-leading order [O(${\mathrm{\ensuremath{\alpha}}}_{\mathit{s}}^{3}$)] QCD calculations. A limit on quark compositeness of ${\mathrm{\ensuremath{\Lambda}}}_{\mathit{c}}$g1.0 TeV is obtained.