The Dijet Mass Spectrum and a Search for Quark Compositeness in barpp Collisions at sqrts = 1.8 TeV
D0 Collaboration, B. Abbott
Abstract
Using the DZero detector at the 1.8 TeV pbarp Fermilab Tevatron collider, we have measured the inclusive dijet mass spectrum in the central pseudorapidity region |etajet| < 1.0 for dijet masses greater than 200 Gev/c2. We have also measured the ratio of spectra sigma(|etajet| < 0.5)/sigma(0.5 < |etajet| < 1.0). The order alphas3 QCD predictions are in good agreement with the data and we rule out models of quark compositeness with a contact interaction scale < 2.4 TeV at the 95% confidence level.
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