Journal
EUROPEAN PHYSICAL JOURNAL C
Volume 24, Issue 2, Pages 245-260Publisher
SPRINGER-VERLAG
DOI: 10.1007/s100520200921
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We discuss the production of pion pairs with a large invariant mass in hadronic collisions. We present a study based on a perturbative QCD calculation at full next-to-leading order accuracy, implemented in the computer programme DIPHOX. We provide a comparison of various predictions with the corresponding observables measured by the E706 fixed target experiment. Discrepancies between data and next-to-leading order calculation are carefully analysed. We classify the theoretical next-to-leading order distributions with respect to their infrared sensitivity, and explain which distributions need improvements. Further, we comment on the energy scale dependences of non pertubative effects.
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