  Axionlike particles (ALPs) emerge from spontaneously broken global symmetries
in high energy extensions of the Standard Model (SM). This causes ALPs to be
among the objectives of future experiments which intend to search for new
physics beyond the SM. We discuss the reach of future pp collider FCC-hh in
probing the ALP model parameters through top quark pair production associated
with ALP ($t\bar{t}+\text{ALP}$) in a model-independent approach. The search is
performed in the semileptonic decay mode of $t\bar{t}$ and the analysis is
performed using a parametric simulation of the detector response for a
projected integrated luminosity of $\rm 30~ab^{-1}$. It is shown that
$t\bar{t}+\text{ALP}$ production at the FCC-hh is a promising channel with
significant sensitivity to probe the ALP coupling with gluons. The ALP coupling
with gluons obtained from HL-LHC and other experiments are presented for
comparison.
