The interference effects of multi-channel pion-pion scattering contributions to the final states of Psi- and Upsilon-meson family decays
classification
✦ hep-ph
keywords
interferencestatesbasicbottomoniachannelscharmoniacontributioncontributions
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It is shown that the basic shape of dipion mass distributions in the two-pion transitions of both charmonia and bottomonia states are explained by an unified mechanism based on the contribution of the $\pi\pi$, $K\overline{K}$ and $\eta\eta$ coupled channels including their interference.
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