Accommodating the CDF $W$-boson mass measurement in the beautiful mirror model

The W-boson mass measurement recently reported by the CDF-II experiment exhibits a significant deviation from both the Standard Model prediction and previous measurements. There is also a long-standing deviation between the Standard Model prediction of the forward-backward asymmetry of the bottom quark $(A_{FB}^{0,b})$ and its measurement at the LEP experiment. The beautiful mirror model, proposed to resolve the $A_{FB}^{0,b}$ discrepancy, introduces vectorlike quarks that modify the W-boson mass at the one-loop level. In this study, we find an interesting region in the model parameter space that could potentially explain both discrepancies, which puts the new quarks in the multi-TeV region. This region is mostly consistent with current LHC bounds from direct searches and Higgs coupling measurements, but will be thoroughly probed at the high-luminosity LHC. As such, the beautiful mirror model as an explanation of the $m_W$ and $A_{FB}^{0,b}$ discrepancies could be confirmed or falsified in the near future.