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arXiv · 1108.4689

WIMPless Dark Matter in Anomaly-Mediated Supersymmetry Breaking with Hidden QED

Jonathan L. Feng·Vikram Rentala·Ze'ev Surujon
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Abstract

In anomaly-mediated supersymmetry breaking, superpartners in a hidden sector have masses that are proportional to couplings squared, and so naturally freeze out with the desired dark matter relic density for a large range of masses. We present an extremely simple realization of this possibility, with WIMPless dark matter arising from a hidden sector that is supersymmetric QED with N_F flavors. Dark matter is multi-component, composed of hidden leptons and sleptons with masses anywhere from 10 GeV to 10 TeV, and hidden photons provide the thermal bath. The dark matter self-interacts through hidden sector Coulomb scatterings that are potentially observable. In addition, the hidden photon contribution to the number of relativistic degrees of freedom is in the range \Delta N_eff ~ 0 - 2, and, if the hidden and visible sectors were initially in thermal contact, the model predicts \Delta N_eff ~ 0.2 - 0.4. Data already taken by Planck may provide evidence of such deviations.

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Jonathan L. Feng, Vikram Rentala, Ze'ev Surujon. 2011-08-23. WIMPless Dark Matter in Anomaly-Mediated Supersymmetry Breaking with Hidden QED. https://doi.org/10.1103/physrevd.84.095033

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