Constraints on New Physics from decays of polarized Lb baryons at the FCC-ee

The Z0 bosons produced in electron-positron collisions at the potential Future Circular Collider (FCC-ee) provide unique opportunities for flavour physics. The non-zero polarization of Lb baryons originating from Z0 decays allows access to many more observables than possible in the currently most precise measurements by the LHCb collaboration limited to unpolarized baryons due to the strong production mechanism in proton-proton collisions. This paper presents a toy angular analysis of Lb -> Lz (-> p pi) mu mu decays using simulation samples of collisions at the FCC-ee reconstructed using the IDEA detector concept. The resulting sensitivity on all 34 angular observables is propagated to a global fit in order to assess the improvement of the knowledge on the Wilson coefficients C9 and C10.