Fig. 1: The Feynman diagrams for e+e− → hadrons in the vicinity of the J/ψ. | Nature Communications

Fig. 1: The Feynman diagrams for e+e− → hadrons in the vicinity of the J/ψ.

From: Extracting the femtometer structure of strange baryons using the vacuum polarization effect

Fig. 1

a strong process with intermediate J/ψ mediated by gluons (ggg), (b) the mixed strong-electromagnetic process of J/ψ decay mediated by γgg, (c) electromagnetic process through the vacuum polarization of one virtual photon (γ*) to J/ψ, (d) continuum process without the J/ψ intermediate state but only one virtual photon.

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