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• W3149292089 abstract "The Fermilab Muon $g-2$ experiment recently reported its first measurement of the anomalous magnetic moment $a_mu^{textrm{FNAL}}$, which is in full agreement with the previous BNL measurement and pushes the world average deviation $Delta a_mu^{2021}$ from the Standard Model to a significance of $4.2sigma$. Here we provide an extensive survey of its impact on beyond the Standard Model physics. We use state-of-the-art calculations and a sophisticated set of tools to make predictions for $a_mu$, dark matter and LHC searches in a wide range of simple models with up to three new fields, that represent some of the few ways that large $Delta a_mu$ can be explained. In addition for the particularly well motivated Minimal Supersymmetric Standard Model, we exhaustively cover the scenarios where large $Delta a_mu$ can be explained while simultaneously satisfying all relevant data from other experiments. Generally, the $Delta a_mu$ result can only be explained by rather small masses and/or large couplings and enhanced chirality flips, which can lead to conflicts with limits from LHC and dark matter experiments. Our results show that the new measurement excludes a large number of models and provides crucial constraints on others. Two-Higgs doublet and leptoquark models provide viable explanations of $a_mu$ only in specific versions and in specific parameter ranges. Among all models with up to three fields, only models with chirality enhancements can accommodate $a_mu$ and dark matter simultaneously. The MSSM can simultaneously explain $a_mu$ and dark matter for Bino-like LSP in several coannihilation regions. Allowing under abundance of the dark matter relic density, the Higgsino- and particularly Wino-like LSP scenarios become promising explanations of the $a_mu$ result." @default.
• W3149292089 created "2021-04-13" @default.
• W3149292089 creator A5051838821 @default.
• W3149292089 creator A5060842815 @default.
• W3149292089 creator A5064343490 @default.
• W3149292089 creator A5064500476 @default.
• W3149292089 creator A5075009432 @default.
• W3149292089 creator A5091350479 @default.
• W3149292089 date "2021-04-08" @default.
• W3149292089 modified "2023-09-27" @default.
• W3149292089 title "New physics explanations of $a_mu$ in light of the FNAL muon $g-2$ measurement" @default.
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