2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/207384We have measured the dijet angular distribution in $\sqrt{s}$=1.8 TeV $p\bar{p}$ collisions using the D0 detector. Order $α^{3}_{s}$ QCD predictions are in good agreement with the data. At 95% confidence the data exclude models of quark compositeness in which the contact interaction scale is below 2 TeV.11 pages, Latex, 3 postscript figuresHigh Energy Physics - Experimenttext