Abstract
The growth and development of "charged particle jets" produced in proton-antiproton collisions
at 1.8 TeV are studied. In addition, a number of "global" observables are examined, where to
fit the observable the QCD Monte-Carlo models have to describe correctly the entire
proton-antiproton event structure. In particular, we study carefully the growth and structure
of the "underlying event" in hard scattering processes. None of the models
(with their default parameters) describe correctly all the properties of the
underlying event.
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