The 13th International Workshop on e+e- collisions from Phi to Psi

The proposed STCF is a symmetric electron-positron beam collider designed to provide $e^+e^-$ interactions at a centerof-mass energy from 2.0 to $7.0~\rm GeV$. The peaking luminosity is expected to be $0.5\times 10^{35} cm^{-2}s^{-1}$. The energy region of STCF covers the pair production thresholds for $\tau$-leptons, charmed meson & baryons, and all of the strange hyperons. STCF is expected to deliver more than $1~ab^{-1}$ of integrated luminosity per year. Huge samples of XYZ, $J/\psi$ , $D^{+(0)}$, $D_s^+$ and $\Lambda_c$ decays could be used to make precision measurements of the properties of XYZ particles, search for new ones, and study their rare decays; map out the spectroscopies of QCD hybrids and glueballs; search for new sources of CP violation in the strange-hyperon and $\tau$−lepton sectors with unprecedented sensitivity; make precise independent measurements of the Cabibbo angle ($\theta_c$) to test the unitarity of the CKM flavor-mixing matrix and address the Cabibbo Angle Anomaly; search for anomalous decays with sensitivities extending down to the level of SM-model expectations; qualify Lattice QCD calculations; and provide precise inputs that are essential for the interpretation of results from other experiments.