Lepton polarization asymmetries in rare semi-tauonic $b\to s$ exclusive decays at FCC-$ee$

J. F. Kamenik, S. Monteil, A. Semkiv +1

We consider measurements of exclusive rare semi-tauonic $b$-hadron decays, mediated by the $b\to s{\tau }^{+}{\tau }^{-}$ transition, at a future high energy circular electron-positron…