Study ofY1*(1660)±→Σ0π±(andΛπ±)

Abstract

Large samples of $Y_1^{}{}_{}{}^{*}{\mathrm{}\left(1660\right)\mathrm{}}^{\pm }\to {\Sigma }^0{\pi }^{\pm }$ have been analyzed. Little $\Lambda \pi$ decay is observed, but $\Sigma \pi$ and $Y_0^{}{}_{}{}^{*}\mathrm{}\left(1405\right)\mathrm{}\pi$ modes are comparable. The spin and parity conclusion from ${\Sigma }^0\pi$ study is ${\frac{3}{2}}^{-}$.