In light of recent experimental results, we revisit the dispersive analysis of the ω→ 3 π decay amplitude and of the ωπ transition form factor. Within the framework of the Khuri–Treiman equations, we show that the ω→ 3 π 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→ 3 π amplitude is consistent with the data from MAMI and NA60 experiments.
ω→ 3 π and ωπ0 transition form factor revisited
Pilloni A.;
2020-01-01
Abstract
In light of recent experimental results, we revisit the dispersive analysis of the ω→ 3 π decay amplitude and of the ωπ transition form factor. Within the framework of the Khuri–Treiman equations, we show that the ω→ 3 π 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→ 3 π amplitude is consistent with the data from MAMI and NA60 experiments.File in questo prodotto:
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