The $\phi\to\eta\pi^0\gamma$ decay
  Rare radiative decay $\phi\to\eta\pi^0\gamma$ was studied with SND detector at {VEPP-2M} electron-positron collider and its branching ratio was measured: $B(\phi\to\eta\pi^0\gamma)=(0.88\pm0.14\pm0.09)\cdot 10^{-4}$. Significant contribution of the $a_0(980)\gamma$ intermediate state was observed in the decay. The result is based on total integrated luminosity corresponding to $2\cdot10^7$ produced $\phi$ mesons. 
M.N.Achasov, S.E.Baru, K.I.Beloborodov, A.V.Berdyugin, A.V.Bozhenok,   A.D.Bukin, D.A.Bukin, S.V.Burdin, T.V.Dimova, S.I.Dol...