Acta Physica Polonica B, cilt.53, sa.11, 2022 (SCI-Expanded)
Recently proposed Future Circular Collider-based muon-proton colliders will allow for investigating lepton-hadron interactions at the highest center-of-mass energy. In this study, we investigate the potential of these colliders for a four-fermion contact interactions search. Regarding the constructive and destructive interferences of contact interactions, we estimated discovery, observation, and exclusion limits on the compositeness scale for the left-left, right-right, left-right, and right-left helicity structures. In this regard, we obtained compositeness scales for the left-left helicity structure at √ s = 63.2 TeV FCC-based μp collider with the 100 fb-1 integrated luminosity as 225.7±1.9% TeV (discovery), 269.0±2.0% TeV (observation), and 311.3 ± 2.1% TeV (exclusion). This study's findings show that the FCC-based μp colliders have great potential for investigating four-fermion contact interactions.