Measurement of the branching fraction of $D_s^{+}\to {\tau }^{+}{\nu }_{\tau }$ via ${\tau }^{+}\to {\mu }^{+}{\nu }_{\mu }\overline{{\nu }_{\tau }}$

BESIII Collaboration, M. Ablikim, M. N. Achasov +592

Utilizing $7.33{\mathrm{fb}}^{-1}$ of $e^{+}{e}^{-}$ collision data taken at the center-of-mass energies of 4.128, 4.157, 4.178, 4.189, 4.199, 4.209, 4.219, and 4.226 GeV with the BESIII…