Radiative transitions between charmonium states offer an insight into the internal structure of heavy quark bound states within QCD. In this work, we performed a systematically investigation of the radiative transitions of ψ(nS) → γχcJ(mP) and ψ(nD) → γχcJ(mP) via intermediate charmed meson loop with a non-relativistic effective field theory. We only focus on the line-shape behavior of the distributions via different intermediate meson loops. Our results show that the coupled-channel effects of these decays are relatively weak, while the coupled channel effects has obvious enhancement when the inial (final) states are closed to the thresholds of charmed-mesons pair.
CITATION STYLE
Qin, W. H., An, C. S., Li, G., Wang, C., & Wang, Y. (2019). Effects of heavy meson loops on higher charmonia radiative transitions. European Physical Journal C, 79(9). https://doi.org/10.1140/epjc/s10052-019-7274-6
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