Charmonium production in e+e- to ψ+ X(c\bar c) and e+e- to D*D_J
arXiv:0809.3419 · doi:10.1103/PhysRevD.79.014027
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.
9 pages 1 figure. Substatial rewrite from previous versions. Conclusions unchanged