Charmonium production in e+e- to \psi + X(c\bar c) and e+e- to D*D_J

Abstract

The dominance of chi_0 in the data for e+e- to psi + chi_J(c\bar{c}) 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*D_J, where enhancements of D*D_0 and DD_1 channels are predicted. Further tests and implications are discussed.

Comments: 9 pages 1 figure. Substatial rewrite from previous versions. Conclusions unchanged