# $$\omega \rightarrow 3\pi$$ and $$\omega \pi ^{0}$$ transition form factor revisited

### Impacto

Albaladejo, M. and Danilkin, I. and Gonzàlez Solís, S. and Winney, D. and Fernández Ramírez, C. and Blin, A. N. Hiller and Mathieu, V. and Mikhasenko, M. and Pilloni, A. and Szczepaniak, A. (2020) $$\omega \rightarrow 3\pi$$ and $$\omega \pi ^{0}$$ transition form factor revisited. The European Physical Journal C, 80 (12). ISSN 1434-6044

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Official URL: https://doi.org/10.1140/epjc%2Fs10052-020-08576-6

## Abstract

In light of recent experimental results, we revisit the dispersive analysis of the ω→3π decay amplitude and of the ωπ0 transition form factor. Within the framework of the Khuri–Treiman equations, we show that the ω→3π Dalitz-plot parameters obtained with a once-subtracted amplitude are in agreement with the latest experimental determination by BESIII. Furthermore, we show that at low energies the ωπ0 transition form factor obtained from our determination of the ω→3π amplitude is consistent with the data from MAMI and NA60 experiments.

Item Type: Article Sciences > Physics > Physics-Mathematical modelsSciences > Physics > Mathematical physics 74457 22 Sep 2022 13:38 23 Sep 2022 07:27