Precision muon-related observables as a tool to constrain new physics models

We propose a set of precision muon-related observables that serve as a tool to constrain new physics models. Using LEP's precision measurements on the Z-boson pole, we derive bounds on the new physics quantum contributions to the decay Z→μ+μ−. We show that the new precision observables have a r...

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Bibliographic Details
Published in:Nuclear physics. B 2024-07, Vol.1004, p.116540, Article 116540
Main Authors: Lourenço, Gabriel, Milagre, André, Santos, Rui, Silva, João P.
Format: Article
Language:English
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Summary:We propose a set of precision muon-related observables that serve as a tool to constrain new physics models. Using LEP's precision measurements on the Z-boson pole, we derive bounds on the new physics quantum contributions to the decay Z→μ+μ−. We show that the new precision observables have a real impact on two specific models that solve the g−2 anomaly and provide a sound dark matter candidate.
ISSN:0550-3213
1873-1562
DOI:10.1016/j.nuclphysb.2024.116540