Pair production of the vector-like top partner at the 3 TeV CLIC in fully hadronic final states

Within a model-independent framework that includes an SU (2) singlet vector-like top quark (VLQ- T ), we investigate the prospects for detecting pair production of the VLQ- T in e⁺e⁻ e + e - collisions at the 3 TeV Compact Linear Collider (CLIC). We focus on signal final states from the T → Wb T → W b decay channel, with the resulting W bosons decaying hadronically. We show that the TeV-scale mass of the VLQ- T leads to highly boosted W bosons, which manifest as collimated fat jets. These serve as distinctive experimental signatures for signal identification. By performing a full simulation of the signal processes and the relevant Standard Model backgrounds, we respectively derive the 2σ 2 σ exclusion limits on the VLQ- T mass and the 5σ 5 σ discovery prospects for the T → Wb T → W b branching ratio.