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https://arxiv.org/pdf/2204.05296.pdf
Speculations on the W-Mass Measurement at CDF
The W Mass determination at the Tevatron CDF experiment reported a
deviation from the SM expectation at 7σ level. We discuss a few possible interpretations and their collider implications. We perform electroweak global fits under various frameworks and assumptions. We consider three types of electroweak global fits in the effective-field-theory framework: the S-T , the S-T -δGF , and the eight-parameter flavor-universal one. We discuss the amounts of tensions between different mW measurements reflected in these fits and the corresponding shifts in central values of these parameters. With these electroweak fit pictures in hand, we present a few different classes of models and discuss their compatibility with these results … Overall, more theory and experimental developments are highly in demand to reveal the physics behind this discrepancy.