Single-spin measurements and heavy new physics in the $e^{+}{e}^{-}\to t\bar{t}$ process at an FCC-ee

Haotian Cao, Frank Petriello

We investigate the potential of single-spin components of the spin-density matrix in the $e^{+}{e}^{-}\to t\bar{t}$ process at a future FCC-ee for probing heavy new physics parametrize…