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arXiv · 2506.20080

Constraints on the dark sector from electroweak precision observables

B. M. Loizos·X. G. Wang·A. W. Thomas·M. J. White·A. G. Williams
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Abstract

We revisit the Standard Model fit to electroweak precision observables in using the latest data and the Particle Data Group (PDG) measurement of the W boson mass. The analysis is then repeated in light of the new W boson mass measurement from the Collider Detector at Fermilab (CDF) collaboration. We then introduce a dark photon to the model, placing constraints on the parameter space arising from these electroweak precision observables, both for the PDG and CDF values for the W boson mass. We also extend previous work by placing the first electroweak precision observable constraints on the coupling of dark photons to the fermionic dark matter sector.

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B. M. Loizos, X. G. Wang, A. W. Thomas, M. J. White, A. G. Williams. 2025-06-25. Constraints on the dark sector from electroweak precision observables. https://arxiv.org/abs/2506.20080

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