Generating heavy quarkonia in a perturbative QCD cascade

Details Generating heavy quarkonia in a perturbative QCD cascade Generating heavy quarkonia in a perturbative QCD cascade

1996-06-28

arxiv.org/abs/hep-ph/9606472v2

Z.Phys. C75 (1997) 51-56

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, LaTeX, uses the cite and graphics packages. Version 2, accepted for publication in Z. Phys. C, contains a new paragr

Scientific paper

We present an implementation of heavy quarkonium production within a perturbative QCD cascade based on the Colour Dipole Cascade model. We consider the processes most relevant in the context of the psi' surplus at the Tevatron; g -> psi' and c -> psi' in the colour-singlet model and g -> psi' through the colour-octet mechanism. Our implementation is, however, easily extendible to other quarkonia and other production mechanisms. Where comparison is possible we find good agreement with analytical calculations. We present some suggestions for measurements at the Tevatron that would be sensitive to the shape of the fragmentation functions. Our calculations indicate that such measurements could be used to test the colour-octet mechanism solution to the psi' surplus at the Tevatron.

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