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arXiv · 2204.11570

Corrections to electroweak precision observables from mixings of an exotic vector boson in light of the CDF $W$-mass anomaly

Chengfeng Cai·Dayun Qiu·Yi-Lei Tang·Zhao-Huan Yu·Hong-Hao Zhang
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Abstract

We enumerate various effective couplings that contribute to the mixings between an exotic vector boson $Z^{\prime}$ and the neutral electroweak vector bosons. The miscellaneous mixing patterns can be evaluated perturbatively. The effective oblique parameters $S^{\prime}$, $T^{\prime}$, and $U^{\prime}$ are calculated to compare with the electroweak precision test results. With the contributions to the non-negligible $U^{\prime}$ parameter from the $ε_{B,W}$ parameters and the aid of some other parameters to cancel the negative $T^{\prime}$, the recent CDF $W$-mass anomaly can therefore be explained.

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Chengfeng Cai, Dayun Qiu, Yi-Lei Tang, Zhao-Huan Yu, Hong-Hao Zhang. 2022-06-23. Corrections to electroweak precision observables from mixings of an exotic vector boson in light of the CDF $W$-mass anomaly. https://doi.org/10.1103/physrevd.106.095003

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