Matches in SemOpenAlex for { <https://semopenalex.org/work/W4385877545> ?p ?o ?g. }
- W4385877545 abstract "The combination of precise determinations of ${V}_{us}$ and ${V}_{ud}$ hints toward a violation of the Cabibbo-Kobayashi-Maskawa matrix first row unitarity at about $3ensuremath{sigma}$ level. Conversely, the recent measurement of the $W$-boson mass by the CDF Collaboration exhibits significant tension with the Standard Model prediction, intensifying the conflict that may arise in models addressing the unitarity violation. We demonstrate that one vectorlike $SU(2{)}_{L}$ doublet with mass of a few TeV mixing with light quarks and the top quark can simultaneously account for the two anomalies, without conflicting with flavor-changing phenomena and electroweak observables. Moreover, another tension in the value of the Cabibbo angle is also reported at the $3ensuremath{sigma}$ level, between two determinations of ${V}_{us}$ obtained from semileptonic $Kensuremath{ell}3$ and leptonic $Kensuremath{mu}2$ kaon decays. We show that the vectorlike doublet can be at the origin of this discrepancy and the substantial positive shift in the $W$-boson mass. This unique feature of the vectorlike quark doublet may render it a crucial puzzle piece in new physics scenarios addressing the Cabibbo-Kobayashi-Maskawa matrix unitarity problem. The model can be potentially probed in future colliders." @default.
- W4385877545 created "2023-08-17" @default.
- W4385877545 creator A5016489681 @default.
- W4385877545 creator A5031440314 @default.
- W4385877545 date "2023-08-16" @default.
- W4385877545 modified "2023-09-30" @default.
- W4385877545 title "Cabibbo angle anomalies and oblique corrections: The remarkable role of the vectorlike quark doublet" @default.
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