Recent Advances in Hadron Production in $e^{+}{e}^{-}$ Annihilation at BESIII

This talk presents recent experimental findings at BESIII experiment, including three distinct studies. Firstly, it reports the measurements of the Born cross-sections of $e^{+}{e}^{-}\to {\mathrm{\Sigma }}^{+}{\bar{\mathrm{\Sigma }}}^{-}$, ${\mathrm{\Xi }}^{-}{\bar{\mathrm{\Xi }}}^{+}$, $K_S^0{K}_L^0$ and $K^{-}{\bar{\mathrm{\Xi }}}^{+}\mathrm{\Lambda }\mathrm{/}{\mathrm{\Sigma }}^0+c\mathrm{.}c\mathrm{.}$ at center-of-mass energies between 3.5 and 4.9 GeV. Secondly, it delves into the observation of significant flavor-SU(3) breaking in the kaon wave function at 12 GeV${}^2$$<Q^2<$25 GeV${}^2$, the discovery of $\psi (3770)\to K_S^0{K}_L^0$ and the evidence of $\psi (4160)\to K^{-}{\bar{\mathrm{\Xi }}}^{+}\mathrm{\Lambda }+c\mathrm{.}c\mathrm{.}$. Thirdly, it discusses the search for the production of deuterons in $e^{+}{e}^{-}$ annihilation at center-of-mass energies between 4.1 and 4.7 GeV in the reactions of $e^{+}{e}^{-}\to pp{\pi }^{-}\bar{d}+c\mathrm{.}c\mathrm{.}$ and $pp\bar{p}\bar{n}{\pi }^{-}+c\mathrm{.}c\mathrm{.}$. These results offer new perspectives on hadron production in the baryonic final states and the flavor dynamics within the kaon wave function, and the rare decay processes involving the $\psi (3770)$ resonance, contributing to our understanding of hadron dynamics in this energy regime through baryon final states produced in $e^{+}{e}^{-}$ collisions.