https://doi.org/10.1140/epjp/s13360-023-03992-5
Regular Article
A model explaining the new CDF II W boson mass linking to muon 
and dark matter
1
Faculty of Science, Department of Applied Physics, Okayama University of Science, Ridaicho 1-1, 700-0005, Okayama, Japan
2
College of Physics, Sichuan University, 610065, Chengdu, China
3
Asia Pacific Center for Theoretical Physics, 37673, Pohang, Republic of Korea
4
Department of Physics, Pohang University of Science and Technology, 37673, Pohang, Republic of Korea
Received:
14
May
2021
Accepted:
14
April
2023
Published online:
28
April
2023
We propose a model to explain the W boson mass anomaly reported by CDFII collaboration that would suggest new physics (NP). We introduce exotic fermions; one isospin doublet vector-like lepton, one isospin singlet singly-charged vector-like lepton, and an isospin doublet inert scalar. The proposed model provides sizable muon anomalous magnetic moment (muon ) due to no chiral suppression and nonzero mass difference between the real and imaginary parts of neutral inert scalar bosons. The inert scalar mass squared difference and vector-like exotic leptons (
in the main text) affect oblique parameters. Especially, T-parameter shift from zero explains the W boson mass anomaly. We search for the allowed parameter region to explain both muon and W boson mass anomaly at the same time. We also discuss a dark matter (DM) candidate assuming the real part of the inert scalar field to be the one. We find that lighter DM mass is favored to be consistent with experimental constraints.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
