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Direct Detection Constraints on Dark Photon Dark Matter
Haipeng An, Maxim Pospelov, Josef Pradler +1
Dark matter detectors built primarily to probe elastic scattering of WIMPs on nuclei are also precise probes of light, weakly coupled particles that may be absorbed by the detector…
Leptogenesis and the Higgs Portal
Matthias Le Dall, Adam Ritz
We study the impact on leptogenesis of Higgs portal couplings to a new scalar singlet. These couplings open up additional -violating decay channels for the higher mass singlet…
Cosmological Constraints on Very Dark Photons
Anthony Fradette, Maxim Pospelov, Josef Pradler +1
We explore the cosmological consequences of kinetically mixed dark photons with a mass between 1 MeV and 10 GeV, and an effective electromagnetic fine structure constant as small a…
Leptophobic Dark Matter at Neutrino Factories
Brian Batell, Patrick deNiverville, David McKeen +2
High-luminosity fixed-target neutrino experiments present a new opportunity to search for light sub-GeV dark matter and associated new forces. We analyze the physics reach of these…
Kerr-AdS Black Holes and Force-Free Magnetospheres
Xun Wang, Adam Ritz
We obtain analogs of the Blandford-Znajek split monopole solution for force-free magnetospheres around a slowly rotating Kerr-AdS black hole. For small black holes, we find an anal…