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Flavoured $(g-2)_\mu$ with dark lepton seasoning

Acaroglu, Harun 1; Agrawal, Prateek; Blanke, Monika 1,2
1 Institut für Theoretische Teilchenphysik (TTP), Karlsruher Institut für Technologie (KIT)
2 Institut für Astroteilchenphysik (IAP), Karlsruher Institut für Technologie (KIT)

Abstract:

As a joint explanation for the dark matter (DM) problem and the muon $(g−2)$ anomaly, we propose a simplified model of lepton-flavoured complex scalar DM with couplings to both the left- and right-handed leptons of the Standard Model (SM). Both interactions are governed by the same new flavour-violating coupling matrix $λ$, however we allow for a relative scaling of the coupling strength. The SM is further extended by two fermion representations, transforming as an $SU(2)_L$ doublet and singlet, respectively, and mediating these interactions. The fermions additionally couple to the SM Higgs doublet via a new Yukawa coupling. To study the model's phenomenology we first investigate constraints from collider searches, flavour experiments, precision tests of the SM, the DM relic density, and direct as well as indirect detection experiments individually. We then perform a combined analysis by demanding that all mentioned constraints are satisfied simultaneously. We use the results of this combined analysis and examine if the model is capable of accommodating the $(g−2)_\mu$ anomaly within its viable parameter space without introducing fine-tuned lepton masses. ... mehr


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DOI: 10.5445/IR/1000164337
Veröffentlicht am 14.11.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Forschungsbericht/Preprint
Publikationsmonat/-jahr 10.2023
Sprache Englisch
Identifikator KITopen-ID: 1000164337
HGF-Programm 51.11.01 (POF IV, LK 01) Teilchenphysik
Umfang 55 S.
Vorab online veröffentlicht am 24.10.2023
Nachgewiesen in arXiv
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