A next-to-leading order study of pion-pair production and comparison with E706 data

Details A next-to-leading order study of pion-pair production and comparison with E706 data A next-to-leading order study of pion-pair production and comparison with E706 data

2001-11-05

arxiv.org/abs/hep-ph/0111043v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages LaTex, 18 eps figures

Scientific paper

10.1007/s100520200921

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 infra-red sensitivity, and explain which distributions need improvements. Further, we comment on the energy scale dependences of non pertubative effects.

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