The $φ\toηπ^0γ$ decay

Details The $φ\toηπ^0γ$ decay The $φ\toηπ^0γ$ decay

2000-03-27

arxiv.org/abs/hep-ex/0003031v1

Phys.Lett.B479:53-58,2000

Physics

High Energy Physics

High Energy Physics - Experiment

12 pages, 6 figures

Scientific paper

10.1016/S0370-2693(00)00334-8

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.

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