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

Abstract

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 $e^{+}{e}^{-}\to \omega {\pi }^0\to {\pi }^0{\pi }^0\gamma$ 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 $\rho$-like states and used to test the conserved vector current hypothesis in the ${\tau }^{-}\to \omega {\pi }^{-}{\nu }_{\tau }$ decay.

7 pages, 3 figures, 3 tables

References in corpus (2)

• Precision study of the $\eta \to {\mu }^{+}{\mu }^{-}\gamma$ and $\omega \to {\mu }^{+}{\mu }^{-}{\pi }^0$ electromagnetic transition form-factors and of the $\rho \to {\mu }^{+}{\mu }^{-}$ line shape in NA60
• Study of the process e+e- -> omega pi0 in the phi-meson mass region with the KLOE detector

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