A gauged U(1)_{Lμ−Lτ} dark sector with kinetic mixing can simultaneously accommodate the muon anomalous magnetic moment excess and the observed dark matter relic density.
Abelian Hidden Sectors at a GeV
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abstract
We discuss mechanisms for naturally generating GeV-scale hidden sectors in the context of weak-scale supersymmetry. Such low mass scales can arise when hidden sectors are more weakly coupled to supersymmetry breaking than the visible sector, as happens when supersymmetry breaking is communicated to the visible sector by gauge interactions under which the hidden sector is uncharged, or if the hidden sector is sequestered from gravity-mediated supersymmetry breaking. We study these mechanisms in detail in the context of gauge and gaugino mediation, and present specific models of Abelian GeV-scale hidden sectors. In particular, we discuss kinetic mixing of a U(1)_x gauge force with hypercharge, singlets or bi-fundamentals which couple to both sectors, and additional loop effects. Finally, we investigate the possible relevance of such sectors for dark matter phenomenology, as well as for low- and high-energy collider searches.
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hep-ph 1years
2019 1verdicts
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Dark Sectors from the Hidden Photon Perspective
A gauged U(1)_{Lμ−Lτ} dark sector with kinetic mixing can simultaneously accommodate the muon anomalous magnetic moment excess and the observed dark matter relic density.