%0 Journal Article %T Limits on Quark Compositeness from High Energy Jets in PbarP Collisions at 1.8 TeV %A D0 collaboration %A B. Abbott %J Physics %D 1999 %I arXiv %R 10.1103/PhysRevD.62.031101 %X Events in PbarP collisions at sqrt(s)=1.8 TeV with total transverse energy exceeding 500 GeV are used to set limits on quark substructure. The data are consistent with next-to-leading order QCD calculations. We set a lower limit of 2.0 TeV at 95% confidence on the energy scale Lambda_LL for compositeness in quarks, assuming a model with a left-left isoscalar contact interaction term. The limits on Lambda_LL are found to be insensitive to the sign of the interference term in the Lagrangian. %U http://arxiv.org/abs/hep-ex/9912023v3