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Motivations and ideas behind hadron--hadron event shapes

Abstract

We summarize the main motivations to study event shapes at hadron colliders. In addition we present classes of event shapes and show their complementary sensitivities to perturbative and non-perturbative effects, namely jet hadronization and underlying event.Comment: 10 pages, 9 figures, talk given at the FRIF Workshop on First Principles Non-Perturbative QCD of Hadron Jets, Paris, January 200

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