| Issue |
EPJ Web Conf.
Volume 138, 2017
XXIII International Baldin Seminar on High Energy Physics Problems Relativistic Nuclear Physics and Quantum Chromodynamics (Baldin ISHEPP XXIII)
|
|
|---|---|---|
| Article Number | 01025 | |
| Number of page(s) | 10 | |
| Section | Plenary Session | |
| DOI | https://doi.org/10.1051/epjconf/201713801025 | |
| Published online | 27 March 2017 | |
https://doi.org/10.1051/epjconf/201713801025
Effect of the ηη channel and interference phenomena in the two-pion transitions of charmonia and bottomonia
1 Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980 Dubna, Russia
2 Nuclear Physics Institute of the CAS, 25068 Řež, Czech Republic
3 Institut für Theoretische Physik, Universität Tübingen, Kepler Center for Astro and Particle Physics, Auf der Morgenstelle 14, D-72076 Tübingen, Germany
4 Institute of Nuclear Physics of the PAN, Cracow 31342, Poland
5 Department of Physics, Tomsk State University, 634050 Tomsk, Russia
6 Mathematical Physics Department, Tomsk Polytechnic University, Lenin Avenue 30,, 634050 Tomsk, Russia
7 Institute of Physics, SAS, Bratislava 84511, Slovak Republic
* e-mail: surovcev@theor.jinr.ru
Published online: 27 March 2017
The basic shape of di-pion mass spectra in the two-pion transitions of both charmonia and bottomonia states is explained by a unified mechanism based on contributions of the ππ, KK̅, and ηη coupled channels including their interference. The role of the individual f0 resonances in shaping the di-pion mass distributions in the charmonia and bottomonia decays is considered.
© The Authors, published by EDP Sciences, 2017
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