Feasibility Study of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ Decay and Test of Lepton Flavor Universality with Leptonic $D_s^{+}$ Decays at STCF

Huijing Li, Tao Luo, Xiaodong Shi +1

We report a sensitive study of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ decay via ${\tau }^{+}\to e^{+}{\nu }_e{\bar{\nu }}_{\tau }$ with an integrated luminosity of 1 ab${}^{-1}$ at the center-of-mass energy of $4.009$ GeV at a…