Prospects for searches of b→ sνν decays at FCC-ee

We investigate the physics reach and potential for the study of various decays involving a b→ sνν transition at the Future Circular Collider running electron-positron collisions at the Z -pole (FCC-ee). Signal and background candidates, which involve inclusive Z contributions from bb , cc and uds final states, are simulated for a proposed multi-purpose detector. Signal candidates are selected using two Boosted Decision Tree algorithms. We determine expected relative sensitivities of 0 . 53