Testing factorization of charmonium production

Abstract

Within the NRQCD factorization approach the production of heavy quarkonia can be calculated in perturbative QCD in terms of a few production-process-independent NRQCD matrix elements. We test the universality of these long-distance matrix elements by comparing their values as determined from charmonium production at p pbar, e p, and e+ e- colliders, and in Z^0, Upsilon, and B decays.

19 pages, latex, 4 figures

Cited by in corpus (15)

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• Measurement of $J/\psi$ production in continuum $e^{+}{e}^{-}$ annihilations near $\sqrt{s}=10.6$ GeV
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