Measurement of Dijet Angular Distributions and Search for Quark Compositeness

Abstract

We have measured the dijet angular distribution in $\sqrt{s}$=1.8 TeV $p\bar{p}$ collisions using the D0 detector. Order ${\alpha }_s^3$ 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 figures

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