Constraints on the dark sector from electroweak precision observables
arXiv:2506.20080
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.
8 pages, 2 figures. Contribution to the XVIth Quark Confinement and the Hadron Spectrum Conference (QCHSC24), 19-24 August 2024, Cairns, Australia