Testing factorization of charmonium production

  • Gerhard A. Schuler
Theoretical physics


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 \(\rm p\bar{p}\), ep, and \(\rm e^+e^-\) colliders, and in \(\rm Z^0\), \(\Upsilon\), and B decays.


Matrix Element Heavy Quarkonia Charmonium Production NRQCD Factorization NRQCD Matrix Element 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Gerhard A. Schuler
    • 1
  1. 1. Theory Division, CERN, CH-1211 Geneva 23, Switzerland (e-mail: CH

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