  The new measurement of $W$-boson mass by the CDF collaboration revealed a
remarkable $7\sigma$ disagreement with the Standard Model (SM) prediction. If
confirmed by other experiments, then the disagreement strongly indicates the
existence of new physics beyond the SM. In this work, seven vectorlike quark
(VLQ) extensions of the SM are investigated to interpret the anomaly, and it is
found that three can explain the anomaly in broad parameter space. The
explanations are consistent with the constraints from oblique parameters, the
LHC search for VLQs, the measurements of the properties for the top quark,
bottom quark, and Higgs boson, and the perturbativity criterion. The typical
size of the involved Yukawa coupling is around 1, which is comparable to the
top quark Yukawa coupling in the SM. The other extensions, however, either
predict a negative correction to the mass in reasonable parameter space or
explain the anomaly by unnatural theoretical input parameters.

High Energy Physics - Phenomenology