Study of the radiative decay $\varphi \to \eta \gamma$ with CMD-2 detector

Abstract

Using the $1.9p{b}^{-1}$ of data collected with the CMD-2 detector at VEPP-2M the decay mode $\varphi \to \eta \gamma$, $\eta \to {\pi }^{+}{\pi }^{-}{\pi }^0$ has been studied. The obtained branching ratio is B($\varphi \to \eta \gamma )=(1.18\pm 0.03\pm 0.06)$.

13 pages, 5 figures, LaTex2e, to be published in Phys. Lett. B

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