Electron and muon magnetic moments and implications for dark matter and model characterisation in non-universal $U(1{)}^{\prime }$ supersymmetric models

Abstract

We attribute deviations of the muon and electron magnetic moments from the theoretical predictions to the presence of an additional $U(1{)}^{\prime }$ supersymmetric model. We interpret the discrepancies between the muon and electron anomalous magnetic moments to be due to the presence of non-universal $U(1{)}^{\prime }$ charges. In a minimally extended model, we show that requiring both deviations to be satisfied imposes constraints on the spectrum of the model, in particular on dark matter candidates and slepton masses and ordering. Choosing three benchmarks with distinct dark matter features, we study implications of the model at colliders, concentrating on variables that can distinguish our non-universal scenario from other $U(1{)}^{\prime }$ implementations.

30 pages, 17 figures, to be published in JHEP

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