Charmonium production in e+e- to + X(c c) and e+e- to D*DJ
Abstract
The dominance of chi0 in the data for e+e- to psi + chiJ(cc) is shown to violate OZI factorization. Single gluon exchange gives a non-factorizing effective S.L interaction that generates a large scalar production amplitude. This also has observable effects near threshold in e+e- to D*DJ, where enhancements of D*D0 and DD1 channels are predicted. Further tests and implications are discussed.
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