Khuri-Treiman analysis of $J/\psi\to\pi^{+}\pi^{-}\pi^{0}$
| Autor: | JPAC Collaboration, Albaladejo, M., Gonzàlez-Solís, S., Bibrzycki, Ł., Fernández-Ramírez, C., Hammoud, N., Mathieu, V., Mikhasenko, M., Montaña, G., Perry, R. J., Pilloni, A., Rodas, A., Smith, W. A., Szczepaniak, A., Winney, D. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.108.014035 |
| Popis: | We study the decay $J/\psi\to\pi^{+}\pi^{-}\pi^{0}$ within the framework of the Khuri-Treiman equations. We find that the BESIII experimental di-pion mass distribution in the $\rho(770)$-region is well reproduced with a once-subtracted $P$-wave amplitude. Furthermore, we show that $F$-wave contributions to the amplitude improve the description of the data in the $\pi\pi$ mass region around 1.5 GeV. We also present predictions for the $J/\psi\to\pi^{0}\gamma^{*}$ transition form factor. Comment: 20 pages, 9 figures |
| Databáze: | arXiv |
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