Summary
A meson-exchange model, based on effective Lagrangians including anomalous parity interactions, is used to calculate the cross section for the dissociation of J/ψ by pions. Off-shell effects at the vertices are included with QCD sum rule estimates for the coupling constants and form factors. The total J/ψ–π cross section was found to be 10–11 mb for 4.2 ≤ √{s} ≤ 5 GeV.
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Azevedo, R., Navarra, F. & Nielsen, M. Hadronic Form Factors and J/ψ Dissociation. Acta Physica Hungarica 24, 253–258 (2005). https://doi.org/10.1556/APH.24.2005.1-4.35
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DOI: https://doi.org/10.1556/APH.24.2005.1-4.35