A New Look at the KLOE Data on the Decay φ → ηπ~0γ

摘要

We present an analysis of recent high-statistical KLOE data on φ → ηπ~0γ decay. This decay mainly goes through the a_0γ intermediate state, which makes it possible to investigate properties of the a0. It is shown that KLOE data prefer a higher a0 mass and a considerably larger a0 coupling to the KK-bar than those obtained in the analysis of the KLOE group.