Pair production of singly charged scalar singlet via Drell–Yan process at future Hadron Colliders

In the framework of the singly charged scalar singlet model, we study the possibility of detecting the singly charged [Formula: see text] singlet scalar S through the Drell–Yan process at the High-Luminosity-Large Hadron Collider (HL-LHC) with the center-of-mass energy [Formula: see text] and the integrated luminosity [Formula: see text], the High-Energy-Large Hadron Collider (HE-LHC) with [Formula: see text] and [Formula: see text] as well as the Future Circular Collider — hadron–hadron (FCC-hh) with [Formula: see text] and [Formula: see text]. Considering the constraints on the free parameters, after performing a detector level simulation for the signals and relevant backgrounds, we find that the scalar S might be detected in a certain range of the parameter space, which is not excluded by the current constraints.