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arXiv · 1611.07818

Effect of the $ηη$ channel and interference phenomena in the two-pion transitions of charmonia and bottomonia

Yu. S. Surovtsev·P. Bydžovský·T. Gutsche·R. Kamiński·V. E. Lyubovitskij·M. Nagy
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Abstract

The basic shape of di-pion mass spectra in the two-pion transitions of both charmonia and bottomonia states is explained by an unified mechanism based on contributions of the $ππ$, $K\overline{K}$ and $ηη$ coupled channels including their interference. The role of the individual $f_0$ resonances in shaping the di-pion mass distributions in the charmonia and bottomonia decays is considered.

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Yu. S. Surovtsev, P. Bydžovský, T. Gutsche, R. Kamiński, V. E. Lyubovitskij, M. Nagy. 2016-11-23. Effect of the $ηη$ channel and interference phenomena in the two-pion transitions of charmonia and bottomonia. https://doi.org/10.1051/epjconf%2F201713801025

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