Updated measurement of the $e^+e^- \to \omega \pi^0 \to \pi^0\pi^0\gamma$ cross section with the SND detector

We analyze a 37 pb-1 data sample collected with the SND detector at the VEPP-2000 e+e- collider in the center-of-mass energy range 1.05–2.00 GeV and present an updated measurement of the e+e-→ωπ0→π0π0γ cross section. In particular, we correct the mistake in radiative correction calculation made in our previous measurement based on a part of the data. The measured cross section is fitted with the vector meson dominance model with three ρ-like states and used to test the conserved vector current hypothesis in the τ-→ωπ-ντ decay.

Note:

7 pages, 3 figures, 3 tables

electron positron: annihilation
electron positron: colliding beams
channel cross section: measured
model: meson dominance
omega(783): radiative decay
SND
Novosibirsk VEPP-2000
radiative correction
vector meson
CVC model

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