Study of η(1405)/η(1475) in $$ J/\psi \to \gamma {K}_S^0{K}_S^0{\pi}^0 $$ decay

Using a sample of $(10.09\pm0.04)\times10^{9}$ $J/\psi$ decays collected with the BESIII detector, partial wave analyses decay $J/\psi\to\gamma K^{0}_{S} K^{0}_{S}\pi^{0}$ are performed within $K^{0}_{S}K^{0}_{S}\pi^{0}$ invariant mass region below $1.6\mathrm{\ Ge\kern -0.1em V}/c^2$. The covariant tensor amplitude method is used in both independent and dependent approaches. Both analysis approaches exhibit dominant pseudoscalar axial vector components, show good consistency for other individual components. Furthermore, reveals that spectrum component can be well described two isoscalar resonant states using relativistic Breit-Wigner model, ${\it i.e.}$, $\eta(1405)$ $1391.7\pm0.7_{-0.3}^{+11.3}\mathrm{\ Me\kern V}/c^2$ width $60.8\pm1.2_{-12.0}^{+5.5}\mathrm{\ V}$, $\eta(1475)$ $1507.6\pm1.6_{-32.2}^{+15.5}\mathrm{\ $115.8\pm2.4_{-10.9}^{+14.8}\mathrm{\ V}$. first second uncertainties statistical systematic, respectively. Alternate models also tested, but description deteriorates significantly.