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

Authors :
Albaladejo, M.
Danilkin, I.
Gonzalez-Solis, S.
Winney, D.
Fernandez-Ramirez, C.
Blin, A. N. Hiller
Mathieu, V.
Mikhasenko, M.
Pilloni, A.
Szczepaniak, A.
Publication Year :
2020

Abstract

In light of recent experimental results, we revisit the dispersive analysis of the $\omega \to 3\pi$ decay amplitude and of the $\omega\pi^0$ transition form factor. Within the framework of the Khuri-Treiman equations, we show that the $\omega \to 3\pi$ 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 $\omega\pi^0$ transition form factor obtained from our determination of the $\omega \to 3\pi$ amplitude is consistent with the data from MAMI and NA60 experiments.

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2006.01058
Document Type :
Working Paper