The $J/ψ-K^*$ dissociation cross section in a meson exchange model

Physics – Nuclear Physics – Nuclear Theory

Scientific paper

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15 pages, 5 figures

Scientific paper

In this work we study the energy dependence of the $J/\psi-K^*$ dissociation cross section, using a meson exchange model based on effective hadronic Lagrangian that includes couplings between pseudoscalar and vector mesons. We also consider anomalous parity terms. Off-shell effects at the vertices were handled with QCD sum rule estimates for the running coupling constants, and we compare the results with and without form factors. We also study the $J/\psi-\rho$ cross section with form factors. The total $J/\psi-K^*$ cross section was found to be $1.6 \sim1.9$ mb for $4.2\leq\sqrt{s}\leq5~\GeV$.

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