Constraints on the dark photon from parity violation and the $W$ mass

Abstract

We present an analysis of the experimental data for parity-violating electron scattering (PVES) and atomic parity-violation, including the effects of a dark photon. We derive the favored region of dark photon parameter space, which provides a good description of the experimental data from the Qweak Collaboration and the Jefferson Lab PVDIS Collaboration and simultaneously relieves the tension between the neutron skin thickness determined in the PREX-II experiment and nuclear-model predictions. In addition, we extract the parameter region required to explain the latest W-boson mass anomaly. Our results indicate that a heavy dark photon with mass above the Z boson mass is favored, while other sources of new physics beyond the Standard Model in addition to the dark photon would also be expected.

6 pages, 1 table, 1 figure. The fit result is updated. More references are added

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Cited by in corpus (11)

• Searching for new physics effects in future $W$ mass and ${\sin }^2{\theta }_W(Q^2)$ determinations
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• Constraints on the dark sector from electroweak precision observables
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• WIMP Dark Matter within the dark photon portal
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• Constraints on the $U(1{)}_{B-L}$ model from global QCD analysis
• Oblique corrections in general dark $U(1)$ models