Study of the $e^{+}{e}^{-}\to \hat{I}\cdot {\hat{I}}^3$ process with SND detector at the VEPP-2M $e^{+}{e}^{-}$ collider

Abstract

In experiment with the SND detector at VEPP-2M $e^{+}{e}^{-}$ collider the $e^{+}{e}^{-}\to \hat{I}\cdot {\hat{I}}^3$ cross section was measured in the energy range $E$=0.60--1.38 GeV with the integrated luminosity of 27.8 pb${}^{-1}$. The measured cross section is well described by the vector meson dominance model with contributions from the $\ddot{I}(770)$, $\ddot{I}‰(783)$, $\ddot{I}•(1020)$, $\ddot{I}{}^{\prime }(1465)$ resonances and agrees with results of previous measurements. The decay probabilities $\BR(ϕ\toηγ)$, $\BR(ω\toηγ)$ and $\BR(ρ\toηγ)$ were measured with the accuracies better than or comparable to the world averages.

13 pages, 6 figures, 5 tables