A next-to-leading order study of pion-pair production and comparison with E706 data |
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Authors: | T Binoth JPh Guillet E Pilon M Werlen |
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Institution: | (1) Laboratoire d'Annecy-Le-Vieux de Physique Théorique LAPTH, Chemin de Bellevue, B.P. 110, 74941 Annecy-le-Vieux, France , FR;(2) Department of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, UK , GB |
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Abstract: | 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.
Received: 8 November 2001 / Published online: 5 April 2002 |
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