Amplitude analysis and branching fraction measurement of the decay $$ {D}_s^{+} $$ ? ?+?0?0

Using a data set corresponding to an integrated luminosity of 6.32~$\rm fb^{-1}$ recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226~GeV, amplitude analysis decay $D_{s}^{+} \to \pi^{+}\pi^{0}\pi^{0}$ is performed, relative fractions phases different intermediate processes are determined. The absolute branching fraction measured be $(0.50\pm 0.04_{\text{stat}}\pm 0.02_{\text{syst}})\%$. process f_0(980)\pi^{+}, f_0(980)\to\pi^{0}\pi^{0}$ determined $(0.21\pm 0.03_{\text{stat}}\pm 0.03_{\text{syst}})\%$.