Freeze-in dark matter produced by kaons in low-reheating cosmologies requires larger couplings at lower reheating temperatures, directly linking the relic density to observable rates in rare kaon decay experiments.
Non-thermal Dark Matter and the Moduli Problem in String Frameworks
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abstract
We address the cosmological moduli/gravitino problems and the issue of too little thermal but excessive non-thermal dark matter from the decays of moduli. The main examples we study are the G2-MSSM models arising from M theory compactifications, which allow for a precise calculation of moduli decay rates and widths. We find that the late decaying moduli satisfy both BBN constraints and avoid the gravitino problem. The non-thermal production of wino LSPs, which is a prediction of G2-MSSM models, gives a relic density of about the right order of magnitude.
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Long-baseline atom interferometers can probe supersymmetric hidden sectors by mapping ultralight moduli and dilatons to derivatives of gauge kinetic functions, Kähler metrics, and other SUSY parameters.
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Kaon Portal to Freeze-in Dark Matter
Freeze-in dark matter produced by kaons in low-reheating cosmologies requires larger couplings at lower reheating temperatures, directly linking the relic density to observable rates in rare kaon decay experiments.
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Testing Supersymmetric Hidden Sectors with Long-Baseline Atom Interferometers
Long-baseline atom interferometers can probe supersymmetric hidden sectors by mapping ultralight moduli and dilatons to derivatives of gauge kinetic functions, Kähler metrics, and other SUSY parameters.