Testing factorization of charmonium production
نویسنده
چکیده
Within the NRQCD factorization approach the production of heavy quarkonia can be calculated in perturbative QCD in terms of a few production-processindependent NRQCD matrix elements. We test the universality of these longdistance matrix elements by comparing their values as determined from charmonium production at pp, ep, and ee colliders, and in Z, Υ, and B decays. a Heisenberg Fellow. CERN–TH/98–132 April 1998
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تاریخ انتشار 1998