Effect of the ηη channel and interference phenomena in the two-pion transitions of charmonia and bottomonia
| Autor: | Yu. S. Surovtsev, R. Kamiński, Miroslav Nagy, Valery E. Lyubovitskij, P. Bydžovský, Th. Gutsche |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
интерференционные явления Particle physics 010308 nuclear & particles physics QC1-999 Nuclear Theory Mechanism based боттомоний Interference (wave propagation) 01 natural sciences High Energy Physics - Phenomenology Pion 0103 physical sciences двухпионные переходы Mass spectrum High Energy Physics::Experiment 010306 general physics Nuclear Experiment чармоний |
| Zdroj: | EPJ Web of Conferences. 2017. Vol. 138. P. 01025 (1-10) EPJ Web of Conferences, Vol 138, p 01025 (2017) |
| Popis: | 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 $\pi\pi$, $K\overline{K}$ and $\eta\eta$ 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. Comment: 8 pages, 4 figures, Talk at the XXIII International Baldin Seminar on High Energy Physics Problems "Relativistic Nuclear Physics \& Quantum Chromodynamics" (Dubna, Russia, 19--24 September 2016). arXiv admin note: text overlap with arXiv:1610.07898 |
| Databáze: | OpenAIRE |
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