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arXiv · 2204.08440

Beta-decay implications for the W-boson mass anomaly

Vincenzo Cirigliano·Wouter Dekens·Jordy de Vries·Emanuele Mereghetti·Tom Tong
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Abstract

We point out the necessity to consider $\beta$-decay observables in resolutions of the $W$-boson anomaly in the Standard Model Effective Field Theory that go beyond pure oblique corrections. We demonstrate that present global analyses that explain the $W$-boson mass anomaly predict a large, percent-level, violation of first-row CKM unitarity. We investigate what solutions to the $W$-boson mass anomaly survive after including $\beta$-decay constraints.

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Vincenzo Cirigliano, Wouter Dekens, Jordy de Vries, Emanuele Mereghetti, Tom Tong. 2022-04-18. Beta-decay implications for the W-boson mass anomaly. https://doi.org/10.1103/physrevd.106.075001

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