Partial Wave Analysis of $J/\psi \to \gamma (K^{\pm }{K}_S^0{\pi }^{\mp })$

J. Z. Bai

BES data on $J/\psi \to \gamma (K^{\pm }{K}_S^0{\pi }^{\mp })$ are presented. There is a strong peak due to $\eta (1440)/\iota$, which is fitted with a Breit-Wigner amplitude with $s$-dependent widths for…